DEN - SAN

£74 Find Cheap Flights from Denver to San Diego

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to San Diego departing on 11/10. 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.
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KAYAK searches hundreds of travel sites at once for deals on flights to San Diego

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to San Diego, 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 Denver to San Diego, as well as popular online travel agencies
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Cheap Flight Deals from Denver to San Diego (DEN-SAN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Denver to San Diego that are departing in the next months. 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 Denver to San Diego

KAYAK's recommended return flight deals from the most popular airlines that fly from Denver to San Diego.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Hawaiian Airlines Logo
18:43 - 20:08DEN-SAN
2h 25mdirect
Hawaiian Airlines Logo
20:29 - 23:47SAN-DEN
2h 18mdirect
£148Hawaiian Airlines
Find Deal
Sat, 11 Oct - Fri, 17 Oct
United Airlines Logo
20:00 - 00:23DEN-SAN
5h 23m1 stop
United Airlines Logo
18:34 - 22:00SAN-DEN
2h 26mdirect
£156United Airlines
Find Deal
Fri, 16 May - Sun, 18 May
Alaska Airlines Logo
19:05 - 23:59DEN-SAN
5h 54m1 stop
Alaska Airlines Logo
07:00 - 18:09SAN-DEN
10h 09m1 stop
£163Alaska Airlines
Find Deal
Wed, 28 May - Tue, 3 Jun
Delta Logo
19:17 - 23:11DEN-SAN
4h 54m1 stop
Delta Logo
17:02 - 22:30SAN-DEN
4h 28m1 stop
£163Delta
Find Deal
Wed, 14 May - Fri, 16 May
United Airlines Logo
06:00 - 10:24DEN-SAN
5h 24m1 stop
United Airlines Logo
18:28 - 21:56SAN-DEN
2h 28mdirect
£166United Airlines
Find Deal
Thu, 22 May - Sun, 25 May
Alaska Airlines Logo
19:05 - 23:59DEN-SAN
5h 54m1 stop
Alaska Airlines Logo
14:32 - 00:05SAN-DEN
8h 33m2 stops
£169Alaska Airlines
Find Deal
Wed, 28 May - Tue, 3 Jun
Southwest Logo
20:05 - 23:05DEN-SAN
4h 00m1 stop
Southwest Logo
19:05 - 22:25SAN-DEN
2h 20mdirect
£171Southwest
Find Deal
Fri, 11 Jul - Sat, 12 Jul
Delta Logo
19:17 - 23:11DEN-SAN
4h 54m1 stop
Delta Logo
10:01 - 18:19SAN-DEN
7h 18m1 stop
£173Delta
Find Deal
Sat, 24 May - Sun, 25 May
Alaska Airlines Logo
19:05 - 23:59DEN-SAN
5h 54m1 stop
Alaska Airlines Logo
14:32 - 00:05SAN-DEN
8h 33m2 stops
£176Alaska Airlines
Find Deal
Wed, 28 May - Tue, 3 Jun
Southwest Logo
07:25 - 08:50DEN-SAN
2h 25mdirect
Southwest Logo
17:30 - 20:50SAN-DEN
2h 20mdirect
£189Southwest
Find Deal
Thu, 14 Aug - Wed, 20 Aug

KAYAK's insights & trends for Denver to San Diego flights

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

What’s the cheapest day of the week to fly from Denver to San Diego?

The average price of all round-trip flights from Denver to San Diego clicked on KAYAK for each day over the last 12 months.
When flying from Denver to San Diego, you should consider leaving on a Tuesday and avoid Fridays if you are looking for the best rates. For your return to Denver, you’ll find the best rates on Tuesdays and the most expensive ones on Thursdays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to San Diego, 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 Denver to San Diego is May, where tickets cost £104 (return) on average. On the other hand, the most expensive months are March and November, where the average cost of round-trip tickets is £175 and £164 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to San Diego, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from Denver to San Diego, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know - Cheap tickets from Denver to San Diego

Low season

January

High season

July

Cheapest flight

£74
Best time to beat the crowds (4% less expensive on average)
Most popular time to fly and prices are also 1% lower on average.
Flight from Denver to San Diego

When to book flights from Denver to San Diego

Are your dates flexible? Find out the best times to travel from Denver to San Diego 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 Denver to San Diego

  • Does San Diego International Airport have lactation rooms?

    You can use three lactation rooms located post-security at Terminal 1 West Rotunda, second level, near the elevator. There’s also a room at Terminal 1 East Rotunda on the ground level after the security checkpoint. In Terminal 2, the lactation room is on the second level close to Gate 34-35. The rooms are fitted with a hand washing station, comfortable seating, artwork, electrical outlets, soft lighting, and a children’s seat.

  • Are there nonstop flights from Denver to San Diego?

    Different airlines, including United Airlines and Frontier, fly nonstop from Denver International Airport to San Diego International Airport. Frontier also flies through the McCarran International Airport (LAS), but the flight could take longer. Book through KAYAK for details on different flights if you want to find the shortest route.

  • Can I travel with my pet through Denver International Airport?

    Yes, the Denver International Airport allows pets. To help you manage your pet, the airport offers a pet relief area in each concourse. There’s also one at the Jeppesen Terminal. The relief rooms are located post-security in the cores of A, B, and C Gates. All pet relief rooms have artificial turf flooring and a drainage system. There are disposal containers and bags.

  • Does San Diego International Airport offer services for disabled passengers?

    Travelers who need special assistance can contact their airlines prior to the trip to request assistance. At the San Diego International Airport, all terminals are wheelchair accessible. You can find an accessible shuttle, and if you need help, there are telephones at the airport’s reservation boards.

  • Is there complimentary Wi-Fi at San Diego International Airport?

    Wi-Fi at the San Diego International Airport is available in 2h sessions. If you want to connect quickly, enable your device's wireless connection and search for #SANfreewifi, then connect. To use the service longer, you just need to log back in when the session expires.

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

    In the last 3 days, the lowest price for a flight from Denver to San Diego was £99 for a one-way ticket and £197 for a return.

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

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

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

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Denver to San Diego flight route.

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

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

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

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

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

    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 Denver to San Diego.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Diego from Denver 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 Denver to San Diego?

    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 San Diego with an airline and back to Denver with another airline.

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

    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 San Diego from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Denver to San Diego

  • Looking for a cheap flight from San Diego to Denver? 25% of our users found flights on this route for £47 or less round-trip.
  • If you’re in the Front Range Urban Corridor or metropolitan Denver, you can use the Denver International Airport (DEN) to fly to San Diego, California.
  • At Denver International Airport, you can visit several restaurants, including Chick-fil-A at the B Gates Center Core, Ben & Jerry’s Ice Cream at A Gates Center Core, and Dazbog Coffee at C Gates near C47.
  • You can use free Wi-Fi at Denver International Airport. To connect, enable your wireless and locate “DEN Airport Free WiFi.”
  • There’s an Interfaith Chapel and Prayer Hall at the Denver International Airport in the Jeppesen Terminal, Level 6. It’s open 24h a day. You can join a Catholic Mass on Sundays at 1pm.
  • Fights from the Denver International Airport to San Diego land at the San Diego International Airport (SAN), which offers access to downtown San Diego and nearby areas.
  • For quick snacks, the San Diego International Airport offers vending machines located at Terminal 1 in the parking lot under the pedestrian bridge. Others are in Terminal 2 at the Parking Plaza in the lower level near the elevator cores.
  • For shoeshine services at San Diego International Airport, you can access the service at Terminal 2 East near Gate 23 or Terminal 2 West at the North Concourse. The shoeshine service is also available at Terminal 1 above the rotunda escalator.
  • Passengers can use luggage carts provided by Smarte Carte, which cost about $5 per cart. If you’re arriving in the International Arrivals area, the carts are free.
See more tips

Prefer to fly direct from Denver to San Diego?

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

Direct departures

Denver Intl to San Diego

Monday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Tuesday

Air Canada, Frontier, Lufthansa, +2 more

Air Canada, Frontier, +3 more

Wednesday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Thursday

Air Canada, Copa Airlines, Frontier, +3 more

Air Canada, Copa Airlines, +4 more

Friday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Saturday

Air Canada, Copa Airlines, Frontier, +3 more

Air Canada, Copa Airlines, +4 more

Sunday

Air Canada, Frontier, Lufthansa, +4 more

Air Canada, Frontier, +5 more

See more direct flights

Direct returns

San Diego to Denver Intl

Monday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Tuesday

Air Canada, Frontier, Lufthansa, +2 more

Air Canada, Frontier, +3 more

Wednesday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Thursday

Air Canada, Copa Airlines, Frontier, +3 more

Air Canada, Copa Airlines, +4 more

Friday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Saturday

Air Canada, Copa Airlines, Frontier, +3 more

Air Canada, Copa Airlines, +4 more

Sunday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

See more direct flights
See more direct flights

Top airline flying from Denver to San Diego

 
See real verified KAYAK customer reviews for airlines flying from Denver to San Diego. 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 Denver to San Diego? 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.
5.9
FrontierOverall score based on 3283 reviews
4.8Food
6.8Crew
5.6Comfort
6.2Boarding
4.6Entertainment
Airline reviews

Everything went as planned. Crew was great. Seats were still not that comfortable.

8.0 ExcellentMatthew, Mar 2025DEN - SNA
Read more Frontier reviews

Everything went as planned. Crew was great. Seats were still not that comfortable.

they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation

The seats were extremely hard and uncomfortable, even for a budget airline.

Boarding was very well executed. Got my bag right away.

Overall experience good. There was no food and seats were not terribly comfortable.

There was nothing to like, flight delayed had to move to different departure areas, disorganized to say the leasr

I went to the Frontier counter in San Jose at 1030am or so on Sunday 10/13/24 to see if I could get an earlier flight to San Diego in lieu of my reserved 630pm flight. One thing led to another, and I was able to obtain an open seat for about $ 56. on the earlier flight. Fine. Then the agent asked if I "was checking a bag". Not knowing that carry-ons cost extra per Frontier policy, I thought that she meant a regular checked bag. Therefore, I said no. Once I got to the gate, the same gate agent who sold me a ticket told me that I had to pay $99 for a carry-on, and that all bags were extra on Frontier. Having never flown on Frontier, I was not aware of this. Part of the issue was that she was not a native English speaker, so there was a miscommunication as to what "bag" meant. I would have preferred for her to have clearly let me know at the front counter that any bag including a carry-on cost $99. It would have had the same outcome, as I had to take my carry-on. But it got hectic at the last minute at the gate itself. The baggage policy should have mentioned "including carry-ons" when we first spoke.

There were a lot of issues every step of the process. Check in, security, boarding, and dealing with luggage. Plus the money you think you are saving you end up using in hidden fees.

The flight attendant was arguing with a passenger before takeoff. The passenger was frustrated but the flight attendant should have handled it with grace, but instead she was nasty and rude. The seats were comfortable and the flight was uneventful. I wish we didn’t have to pay for drinks or snacks but that’s what you get with a budget airline.

Literally everything could have been better. Why are the planes always late?

Everything you need to know for your flight from Denver to San Diego

Information on your arrival and departure airports

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