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SFO - DEN

£40 Find cheap flights from San Francisco to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Denver departing on 3/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Thu 13/6
Thu 20/6

Search hundreds of travel sites at once for deals on flights to Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Denver, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Denver, as well as popular online travel agencies
In the last 7 days, travellers have searched 42,566,405 times on KAYAK, and here's why:

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Cheap flight deals from San Francisco to Denver (SFO-DEN)

 
These are the cheapest deals for flights from San Francisco to Denver currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent return flight deals from San Francisco to Denver

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from San Francisco to Denver.

Recent one-way flight deals from San Francisco to Denver

Only flying one-way? Below are some of the best one-way flight deals from San Francisco to Denver found on KAYAK recently.

Recent last-minute flight deals from San Francisco to Denver

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from San Francisco to Denver.

Recent direct flight deals from San Francisco to Denver

The latest deals for direct flights from San Francisco to Denver so you can sit back and relax without the need for a layover.

Cheap bus & train deals from San Francisco to Denver

Find recent round-trip train or bus tickets from San Francisco to Denver.

All round-trip flight deals to Denver

The cheapest plane tickets to Denver found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
00:58 - 04:30SFO-DEN
2h 32mdirect
22:16 - 23:58DEN-SFO
2h 42mdirect
£76Frontier
Find Deal
Wed, 7 Aug - Tue, 13 Aug
08:32 - 12:09SFO-DEN
2h 37mdirect
22:16 - 23:58DEN-SFO
2h 42mdirect
£124Frontier
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Thu, 8 Aug - Tue, 13 Aug
00:22 - 10:41SFO-DEN
9h 19m1 stop
22:16 - 23:58DEN-SFO
2h 42mdirect
£136Frontier
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Wed, 7 Aug - Tue, 13 Aug
17:15 - 22:54SFO-DEN
4h 39m1 stop
05:40 - 09:00DEN-SFO
4h 20m1 stop
£156Delta
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Sat, 27 Jul - Tue, 30 Jul
10:55 - 18:39SFO-DEN
6h 44m1 stop
05:30 - 09:00DEN-SFO
4h 30m1 stop
£164Delta
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Tue, 4 Jun - Wed, 12 Jun
14:40 - 23:09SFO-DEN
7h 29m1 stop
05:40 - 09:00DEN-SFO
4h 20m1 stop
£172Delta
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Tue, 23 Jul - Thu, 1 Aug
08:00 - 16:37SFO-DEN
7h 37m1 stop
06:00 - 22:42DEN-SFO
17h 42m2 stops
£195Alaska Airlines
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Tue, 4 Jun - Wed, 5 Jun
14:47 - 23:58SFO-DEN
8h 11m1 stop
06:00 - 11:30DEN-SFO
6h 30m1 stop
£198Alaska Airlines
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Tue, 13 Aug - Wed, 21 Aug
06:30 - 10:17SFO-DEN
2h 47mdirect
06:05 - 07:48DEN-SFO
2h 43mdirect
£205United Airlines
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Tue, 18 Jun - Sun, 23 Jun
16:50 - 23:59SFO-DEN
6h 09m1 stop
06:00 - 09:45DEN-SFO
4h 45m1 stop
£220United Airlines
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Sat, 6 Jul - Sun, 14 Jul
00:58 - 04:30SFO-DEN
2h 32mdirect
£40Frontier
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Tue, 3 Sep
00:58 - 04:30SFO-DEN
2h 32mdirect
£47Frontier
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Tue, 3 Sep
14:40 - 23:28SFO-DEN
7h 48m1 stop
£78Delta
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Tue, 2 Jul
09:15 - 16:34SFO-DEN
6h 19m1 stop
£79American Airlines
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Wed, 4 Sep
17:25 - 23:19SFO-DEN
4h 54m1 stop
£86Delta
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Tue, 11 Jun
06:30 - 10:17SFO-DEN
2h 47mdirect
£95United Airlines
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Sat, 22 Jun
19:59 - 09:44SFO-DEN
12h 45m1 stop
£99Alaska Airlines
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Fri, 5 Jul
06:00 - 16:37SFO-DEN
9h 37m2 stops
£116Alaska Airlines
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Thu, 30 May
06:30 - 10:12SFO-DEN
2h 42mdirect
£125United Airlines
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Thu, 4 Jul
00:54 - 11:28SFO-DEN
9h 34m1 stop
£350American Airlines
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Tue, 3 Sep
11:05 - 08:52SFO-DEN
20h 47m1 stop
11:40 - 13:28DEN-SFO
2h 48mdirect
£277United Airlines
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Sat, 18 May - Sun, 19 May
17:24 - 09:56SFO-DEN
15h 32m2 stops
12:58 - 17:56DEN-SFO
5h 58m1 stop
£434Alaska Airlines
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Sun, 19 May - Wed, 22 May
08:00 - 18:00SFO-DEN
9h 00m2 stops
10:53 - 17:56DEN-SFO
8h 03m1 stop
£450Alaska Airlines
Find Deal
Sat, 18 May - Tue, 21 May
06:00 - 15:07SFO-DEN
8h 07m1 stop
12:58 - 22:42DEN-SFO
10h 44m2 stops
£482Alaska Airlines
Find Deal
Sat, 18 May - Tue, 21 May
08:00 - 23:58SFO-DEN
14h 58m2 stops
12:58 - 22:42DEN-SFO
10h 44m2 stops
£496Alaska Airlines
Find Deal
Sat, 18 May - Tue, 21 May
17:24 - 09:56SFO-DEN
15h 32m2 stops
10:53 - 18:53DEN-SFO
9h 00m2 stops
£500Alaska Airlines
Find Deal
Sun, 19 May - Tue, 21 May
08:00 - 18:00SFO-DEN
9h 00m2 stops
17:37 - 07:29DEN-SFO
14h 52m2 stops
£509Alaska Airlines
Find Deal
Fri, 17 May - Mon, 20 May
13:55 - 23:58SFO-DEN
9h 03m2 stops
10:53 - 18:53DEN-SFO
9h 00m2 stops
£516Alaska Airlines
Find Deal
Sat, 18 May - Tue, 21 May
08:00 - 15:07SFO-DEN
6h 07m1 stop
12:58 - 22:42DEN-SFO
10h 44m2 stops
£517Alaska Airlines
Find Deal
Sat, 18 May - Wed, 22 May
19:06 - 22:47SFO-DEN
2h 41mdirect
21:05 - 10:56DEN-SFO
14h 51m1 stop
£570United Airlines
Find Deal
Fri, 17 May - Mon, 20 May
00:58 - 04:30SFO-DEN
2h 32mdirect
22:16 - 23:58DEN-SFO
2h 42mdirect
£76Frontier
Find Deal
Wed, 7 Aug - Tue, 13 Aug
08:32 - 12:09SFO-DEN
2h 37mdirect
22:16 - 23:58DEN-SFO
2h 42mdirect
£124Frontier
Find Deal
Thu, 8 Aug - Tue, 13 Aug
20:18 - 23:59SFO-DEN
2h 41mdirect
06:00 - 07:43DEN-SFO
2h 43mdirect
£202United Airlines
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Mon, 17 Jun - Wed, 19 Jun
05:00 - 08:37SFO-DEN
2h 37mdirect
07:45 - 09:27DEN-SFO
2h 42mdirect
£205United Airlines
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Tue, 18 Jun - Sun, 23 Jun
20:23 - 23:59SFO-DEN
2h 36mdirect
06:00 - 07:41DEN-SFO
2h 41mdirect
£235United Airlines
Find Deal
Fri, 28 Jun - Sun, 30 Jun
06:35 - 10:10SFO-DEN
2h 35mdirect
10:00 - 11:42DEN-SFO
2h 42mdirect
£240United Airlines
Find Deal
Wed, 28 Aug - Tue, 3 Sep
16:02 - 19:40SFO-DEN
2h 38mdirect
06:00 - 07:42DEN-SFO
2h 42mdirect
£273United Airlines
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Wed, 28 Aug - Mon, 2 Sep
06:30 - 10:12SFO-DEN
2h 42mdirect
21:20 - 23:00DEN-SFO
2h 40mdirect
£336United Airlines
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Sat, 3 Aug - Tue, 6 Aug
20:23 - 23:59SFO-DEN
2h 36mdirect
08:00 - 09:39DEN-SFO
2h 39mdirect
£352United Airlines
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Fri, 26 Jul - Tue, 30 Jul
20:18 - 23:59SFO-DEN
2h 41mdirect
21:25 - 23:05DEN-SFO
2h 40mdirect
£547United Airlines
Find Deal
Mon, 3 Jun - Thu, 6 Jun
08:25 - 18:27Emeryville-
Denver Union
33h 02mdirect
08:46 - 16:57Denver Union-
Emeryville
33h 11mdirect
£165Amtrak
Find Deal
Sat, 1 Jun - Tue, 4 Jun
08:25 - 18:27Emeryville-
Denver Union
33h 02mdirect
08:46 - 16:57Denver Union-
Emeryville
33h 11mdirect
£172Amtrak
Find Deal
Wed, 29 May - Tue, 4 Jun
08:25 - 18:27Emeryville-
Denver Union
33h 02mdirect
08:46 - 16:57Denver Union-
Emeryville
33h 11mdirect
£172Amtrak
Find Deal
Wed, 29 May - Tue, 4 Jun
08:25 - 18:27Emeryville-
Denver Union
33h 02mdirect
08:46 - 16:57Denver Union-
Emeryville
33h 11mdirect
£182Amtrak
Find Deal
Sat, 1 Jun - Wed, 5 Jun
08:25 - 18:27Emeryville-
Denver Union
33h 02mdirect
08:46 - 16:57Denver Union-
Emeryville
33h 11mdirect
£182Amtrak
Find Deal
Sun, 2 Jun - Sat, 8 Jun
08:25 - 18:27Emeryville-
Denver Union
33h 02mdirect
08:46 - 16:57Denver Union-
Emeryville
33h 11mdirect
£182Amtrak
Find Deal
Thu, 6 Jun - Mon, 10 Jun
08:25 - 18:27Emeryville-
Denver Union
33h 02mdirect
08:46 - 16:57Denver Union-
Emeryville
33h 11mdirect
£182Amtrak
Find Deal
Sat, 1 Jun - Mon, 3 Jun
08:25 - 18:27Emeryville-
Denver Union
33h 02mdirect
08:46 - 16:57Denver Union-
Emeryville
33h 11mdirect
£189Amtrak
Find Deal
Sat, 25 May - Sat, 1 Jun
08:25 - 18:27Emeryville-
Denver Union
33h 02mdirect
08:46 - 16:57Denver Union-
Emeryville
33h 11mdirect
£189Amtrak
Find Deal
Fri, 31 May - Sun, 2 Jun
08:25 - 18:27Emeryville-
Denver Union
33h 02mdirect
08:46 - 16:57Denver Union-
Emeryville
33h 11mdirect
£189Amtrak
Find Deal
Fri, 31 May - Mon, 3 Jun

Flights from San Francisco to Denver - Travel Insights & Trends

Get data-powered insights and trends into flights from San Francisco to Denver to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from San Francisco to Denver?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from San Francisco to Denver, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from San Francisco to Denver is January, where tickets cost £138 on average. On the other hand, the most expensive months are June and December, where the average cost of tickets is £215 and £186 respectively.

How far in advance should I book a flight from San Francisco to Denver?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from San Francisco to Denver, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from San Francisco to Denver, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 59 days before departure.

Which airlines provide the cheapest flights from San Francisco to Denver?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting San Francisco to Denver were found on Frontier (£76) and Delta (£156). Frontier proposed the cheapest one-way flight at £40.

Which airlines fly most frequently between San Francisco and Denver?

United Airlines (15 flights per day), Southwest (8 flights per day), and Frontier (2 flights per day) are the most frequent flyers of this route.

Which airlines fly direct between San Francisco and Denver?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from San Francisco to Denver.
There are 3 airlines that fly direct from San Francisco to Denver. They are: Frontier, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with Frontier at £51 for a one-way flight. On average, the best prices for this route can be found at Frontier.

How many flights are there between San Francisco and Denver per day?

Each day, there are between 20 and 30 nonstop flights that take off from San Francisco and land in Denver, with an average flight time of 2h 39m. The most common departure time is 06:00 and most flights take off in the morning. Each week, there are 186 flights. The most frequent day of departure is Wednesday, when 16% of all weekly flights depart. The fewest flights depart on a Saturday.

Which cabin class options are there for flights between San Francisco and Denver?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from San Francisco to Denver take?

The average direct flight takes 2h 32m, covering a distance of 964 miles.

What’s the earliest departure time from San Francisco to Denver?

Early birds can take the earliest flight from San Francisco at 00:59 and will be landing in Denver at 04:35.

What’s the latest departure time from San Francisco to Denver?

If you prefer to fly at night, the latest flight from San Francisco to Denver jets off at 20:55 and lands at 00:20.

Good to know - Cheap tickets from San Francisco to Denver

Low season

January

High season

July

Cheapest flight

£40
Best time to beat the crowds (15% less expensive on average)
Most popular time to fly (11% more expensive on average)
Flight from San Francisco to Denver

When to book flights from San Francisco to Denver

Are your dates flexible? Find out the best times to travel from San Francisco to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Francisco to Denver

  • How do I get from Denver Airport to downtown Denver?

    The RTD bus service connects Denver Airport with the city and departs every 15m from the airport. The bus stop is located at the DEN Transit Center at the south end of Jeppesen Terminal. There is also an information counter in the arrivals hall if you have any questions about routes, fares, or directions. Day passes can be purchased for approximately $9 in cash (no change given) at the bus driver or with credit cards at the ticket machines.

  • Where can I eat at Denver airport after I’ve landed?

    If you land at Jeppesen Terminal and fancy authentic American cuisine, opt for the Boulder Beer Tap House at level 5 on the west side of the terminal. Here you can consume scrumptious snacks, warm dishes, and craft beer. For Mexican food, the Cantina Grill at level 6 is also a good option to get something hearty to eat.

  • Where can I find the car rental center at Denver airport?

    Explore the city and its surroundings conveniently with your own four wheels and rent a car directly from one of the companies located at the airport. The airport has its own car rental center which can be reached with a courtesy shuttle departing from Jeppesen Terminal at level 5, island 4. Companies operating at the airport include Avis, Thrifty, and Enterprise, which are at your service 24/7.

  • Is there a hotel at Denver airport?

    The Westin Denver International Airport Hotel is just a few steps from the terminal building and provides transit flyers, late arrivals, or early departing passengers with a nearby bed. Apart from its over 500 rooms, the hotel boasts a conference center, pool, and gym, as well as various restaurants.

  • What is the cheapest flight from San Francisco to Denver?

    In the last 3 days, the lowest price for a flight from San Francisco to Denver was £50 for a one-way ticket and £95 for a return.

  • Which airlines offer Wi-Fi service onboard planes from San Francisco to Denver?

    Alaska Airlines, Delta, American Airlines, and JetBlue offer inflight Wi-Fi service on the San Francisco to Denver flight route.

  • Which aircraft models fly most regularly from San Francisco to Denver?

    The Boeing 737-900 is the aircraft model that flies most regularly on the San Francisco to Denver flight route.

  • Which airline alliances offer flights from San Francisco to Denver?

    Star Alliance is the only airline alliance operating flights between San Francisco and Denver.

  • On which days can I fly direct from San Francisco to Denver?

    There are direct flights from San Francisco to Denver on a daily basis.

  • Which is the best airline for flights from San Francisco to Denver, United Airlines or Frontier?

    The two airlines most popular with KAYAK users for flights from San Francisco to Denver are United Airlines and Frontier. With an average price for the route of £326 and an overall rating of 7.4, United Airlines is the most popular choice. Frontier is also a great choice for the route, with an average price of £95 and an overall rating of 6.2.

  • How does KAYAK find such low prices on flights from San Francisco to Denver?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to Denver.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to Denver?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to Denver?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Denver with an airline and back to San Francisco with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to Denver?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Denver from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from San Francisco to Denver

  • Looking for a cheap flight from San Francisco to Denver? 25% of our users found flights on this route for £133 or less one-way and £112 or less round-trip.
  • If you’d like to fly cheap and nonstop from San Francisco to the Denver International Airport (DEN), you can book with Frontier Airlines. This low-cost airline offers regular flights from San Francisco to Denver and allows you to save some money on your journey for your time away.
  • For anyone who has extra time on their hands before their departure from San Francisco International Airport (SFO) and who are interested in everything connected to airports and airplanes, a visit at the Aviation Museum & Library is right up the sleeve. You can find it in the main hall of the international terminal building and get access between 10:30 am and 4:30 pm.
  • Let your children use up their energy before boarding your flight from San Francisco to Denver and check out the Kids’ Spots at Terminal 3, Area F, and Area E. Tubes, toys, and interactive activities keep the little ones entertained until it is time to board.
  • Roaming through the San Francisco airport allows you to spot all the exhibited art from regional artists. The SFO Museum and Art Collection welcome and see off travelers in style with various art installations, pictures, and sculptures.
  • Pigs and dogs are usually not a common sight at airports, but at San Francisco airport they belong to the crew. The Wag Brigade consists of various specially trained dogs and a pig who give travelers a joyful (and sometimes wet) welcome and goodbye. They can be detected by their "Pet Me" vests and wagging tails while wandering through the terminals.
See more tips

Prefer to fly direct from San Francisco to Denver?

Find which airlines fly direct from San Francisco to Denver Intl, which days they fly and book direct flights.

Direct departures

San Francisco to Denver Intl

Monday

ANA, Air Canada, Air New Zealand, +8 more

ANA, Air Canada, +9 more

Tuesday

ANA, Air Canada, Air New Zealand, +7 more

ANA, Air Canada, +8 more

Wednesday

ANA, Air Canada, Air China, +9 more

ANA, Air Canada, +10 more

Thursday

ANA, Air Canada, Air New Zealand, +7 more

ANA, Air Canada, +8 more

Friday

ANA, Air Canada, Air New Zealand, +8 more

ANA, Air Canada, +9 more

Saturday

ANA, Air Canada, Air China, +8 more

ANA, Air Canada, +9 more

Sunday

ANA, Air Canada, Air New Zealand, +8 more

ANA, Air Canada, +9 more

See more direct flights

Direct returns

Denver Intl to San Francisco

Monday

ANA, Air Canada, Air New Zealand, +8 more

ANA, Air Canada, +9 more

Tuesday

ANA, Air Canada, Air New Zealand, +7 more

ANA, Air Canada, +8 more

Wednesday

ANA, Air Canada, Air China, +9 more

ANA, Air Canada, +10 more

Thursday

ANA, Air Canada, Air New Zealand, +7 more

ANA, Air Canada, +8 more

Friday

ANA, Air Canada, Air New Zealand, +8 more

ANA, Air Canada, +9 more

Saturday

ANA, Air Canada, Air China, +8 more

ANA, Air Canada, +9 more

Sunday

ANA, Air Canada, Air New Zealand, +8 more

ANA, Air Canada, +9 more

See more direct flights
See more direct flights

Top airlines flying from San Francisco to Denver

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Francisco to Denver? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10959 reviews
6.7Food
7.7Boarding
7.1Entertainment
8.1Crew
7.2Comfort
Airline reviews

We ended up with seats in the very back. So they did not recline. Have no idea why, we reserved and checked in very early. The isles were very narrow and the seats had very little leg room. But they did give us water, and a snack.

4.0 OkayAnonymous, May 2024IAD - DEN
Read more about United Airlines reviews

We ended up with seats in the very back. So they did not recline. Have no idea why, we reserved and checked in very early. The isles were very narrow and the seats had very little leg room. But they did give us water, and a snack.

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Positive: Entertainment via phone on the short was great and my first time. Good food and wine and head phones for free. Negative: Seat hardly reclined on the long flight. Breakfast was an egg with a bun. No egg choices and rather have something sweet like bun/jam and Youghurt.

They did get us booked on a later flight, but it made us miss our connecting flight. So, we had to stay and another state overnight with no luggage or clothes. Because they kept our luggage at airport for next flight on the next day.

Flight was on time. Staff were friendly. I paid for Economy Plus but was required to check my standard carry-on luggage due to lack of space on the aircraft. This cost me 30 minutes, unexpectedly, in waiting at the baggage claim. This experience did not meet my expectations.

Crew is way too many times on the intercom re explaining the same thing

Amazing comfortable chairs great snacks super friendly staff pilots did excellent job. Smooth sailing all the way. Definitely be flying United more.

We waited too long to get water while the plane was on the Tarmac awaiting de-icing.

The plane was delayed coming in and on the tarmac. I was coming from another flight so it made for a very long day. The stewardess kept trying to slam the overhead bins closed and I was worried that she had damaged my new luggage. They ran out of snacks and lccdsddd me a hummus box which was nice. It took them a very long time to pick up the garbage so I could not go to the washroom and had little time. To prepare for disbarment. The TV system was hard to control from the armrest and picture wasn’t clear. The crew did apologize several times for the lateness. It took the Denver airport an unusually long time to de-ice the plane.

Didn't like anything!! Horrible flight. Small seating area and hard seats. Butt was sore after 2 hour flight to Seattle No entertainment or free refreshments No wifi or USB charging receptacles to charge phone entoute like other airliners Luggage rates were 3 times as much as competitors. Difficult to navigate online luggue process to pre pay before flight Overall bad experience WILL NEVER RIDE OR RECOMMEND FRONTIER TO FRIENDS OR FAMILY MEMBERS!!! THIS IS A SHAME!! MOST MESERIBLE FLIGHT OF MY LIFE!! AND I THOUGHT SPIRIT WAS 👎 YOU GOT THEM BEAD HANDS DOWN!!

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Not have to pay for every single item to take a flight. Seating and delays sucked.

Terrible. Seats are bad and the baggage policy is inconsistent

Everything was good, and most importantly on time. They have been extremely tardy in some of my flights

They lost my baggage on my connection flight, it’s been 24 hours since I put my claim in and still no update on my bags.

It’s a cheap airline. I wish they had better seats.

The only issues had were outside of Frontier’s control or weren’t expected. It was a two hour flight they completed fast. We landed almost an hour ahead of schedule. The issues with no entertainment or food weren’t issues since there was no expectations. The issue of the loud or crying babies was outside of frontiers control.

Seats are cramped and very uncomfortable. You have to pay for everything and it is too expensive.

Smooth process and flight. My favorite kind. Uneventful and on-time!

Book cheap flights from San Francisco to Denver

Cheapest flights to Denver from San Francisco found in 2024

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from San Francisco to Denver found on KAYAK in the last 72 hours.
3/9Tue
directFrontier
2h 32mSFO-DEN
£40
3/9Tue
directFrontier
2h 32mSFO-DEN
£47
2/7Tue
1 stopDelta
7h 48mSFO-DEN
£78
4/9Wed
1 stopAmerican Airlines
6h 19mSFO-DEN
£79
11/6Tue
1 stopDelta
4h 54mSFO-DEN
£86
22/6Sat
directUnited Airlines
2h 47mSFO-DEN
£95
5/7Fri
1 stopAlaska Airlines
12h 45mSFO-DEN
£99
30/5Thu
2 stopsAlaska Airlines
9h 37mSFO-DEN
£116
4/7Thu
directUnited Airlines
2h 42mSFO-DEN
£125
3/9Tue
1 stopAmerican Airlines
9h 34mSFO-DEN
£350

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Last minute flights from San Francisco to Denver

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from San Francisco to Denver that are departing in the next 10 days.
18/5Sat
multi-stopUnited Airlines
20h 47mSFO-DEN
19/5Sun
directUnited Airlines
2h 48mDEN-SFO
£277
19/5Sun
multi-stopAlaska Airlines
15h 32mSFO-DEN
22/5Wed
multi-stopAlaska Airlines
5h 58mDEN-SFO
£434
18/5Sat
multi-stopAlaska Airlines
9h 00mSFO-DEN
21/5Tue
multi-stopAlaska Airlines
8h 03mDEN-SFO
£450
18/5Sat
multi-stopAlaska Airlines
8h 07mSFO-DEN
21/5Tue
multi-stopAlaska Airlines
10h 44mDEN-SFO
£482
18/5Sat
multi-stopAlaska Airlines
14h 58mSFO-DEN
21/5Tue
multi-stopAlaska Airlines
10h 44mDEN-SFO
£496
19/5Sun
multi-stopAlaska Airlines
15h 32mSFO-DEN
21/5Tue
multi-stopAlaska Airlines
9h 00mDEN-SFO
£500
17/5Fri
multi-stopAlaska Airlines
9h 00mSFO-DEN
20/5Mon
multi-stopAlaska Airlines
14h 52mDEN-SFO
£509
18/5Sat
multi-stopAlaska Airlines
9h 03mSFO-DEN
21/5Tue
multi-stopAlaska Airlines
9h 00mDEN-SFO
£516
18/5Sat
multi-stopAlaska Airlines
6h 07mSFO-DEN
22/5Wed
multi-stopAlaska Airlines
10h 44mDEN-SFO
£517
17/5Fri
directUnited Airlines
2h 41mSFO-DEN
20/5Mon
multi-stopUnited Airlines
14h 51mDEN-SFO
£570

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San Francisco - Denver Flights

Departure:

San Francisco (undefined)United States

Destination:

Denver (DEN)United States

Return flight deals:

Denver - San Francisco

Cabin classes:

£112

Browse origins:

  • Flights » 
  • San Francisco

Browse destinations:

  • Flights » 
  • Worldwide » 
  • Denver

Compare transportation modes for San Francisco to Denver

Average priceAverage duration
Flights£1982h 32m
Trains£1940h 00m