SFO - BOS

£90 Find Cheap Flights from San Francisco to Boston

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 Boston departing on 24/5. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Boston

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from San Francisco to Boston 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 San Francisco to Boston

KAYAK's recommended return flight deals from the most popular airlines that fly from San Francisco to Boston.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Alaska Airlines Logo
20:47 - 05:40SFO-BOS
5h 53mdirect
Alaska Airlines Logo
07:00 - 10:49BOS-SFO
6h 49mdirect
£174Alaska Airlines
Find Deal
Tue, 10 Jun - Wed, 11 Jun
JetBlue Logo
08:00 - 16:49SFO-BOS
5h 49mdirect
JetBlue Logo
20:35 - 00:17BOS-SFO
6h 42mdirect
£175JetBlue
Find Deal
Wed, 28 May - Wed, 28 May
JetBlue Logo
08:00 - 16:49SFO-BOS
5h 49mdirect
JetBlue Logo
20:35 - 00:17BOS-SFO
6h 42mdirect
£178JetBlue
Find Deal
Tue, 20 May - Tue, 27 May
Alaska Airlines Logo
06:00 - 17:52SFO-BOS
8h 52m1 stop
Alaska Airlines Logo
19:59 - 23:44BOS-SFO
6h 45mdirect
£181Alaska Airlines
Find Deal
Tue, 3 Jun - Tue, 3 Jun
Hawaiian Airlines Logo
20:47 - 05:40SFO-BOS
5h 53mdirect
Hawaiian Airlines Logo
20:19 - 23:59BOS-SFO
6h 40mdirect
£187Hawaiian Airlines
Find Deal
Tue, 10 Jun - Wed, 18 Jun
Hawaiian Airlines Logo
11:30 - 00:06SFO-BOS
9h 36m1 stop
Hawaiian Airlines Logo
20:19 - 23:59BOS-SFO
6h 40mdirect
£194Hawaiian Airlines
Find Deal
Tue, 10 Jun - Mon, 16 Jun
Delta Logo
07:00 - 15:45SFO-BOS
5h 45mdirect
Delta Logo
20:30 - 00:16BOS-SFO
6h 46mdirect
£195Delta
Find Deal
Sun, 18 May - Fri, 30 May
Delta Logo
07:00 - 15:45SFO-BOS
5h 45mdirect
Delta Logo
17:00 - 20:50BOS-SFO
6h 50mdirect
£205Delta
Find Deal
Sat, 10 May - Tue, 10 Jun
United Airlines Logo
21:15 - 08:11SFO-BOS
7h 56m1 stop
United Airlines Logo
06:00 - 09:28BOS-SFO
6h 28mdirect
£235United Airlines
Find Deal
Fri, 11 Jul - Sat, 19 Jul
United Airlines Logo
00:10 - 10:38SFO-BOS
7h 28m1 stop
United Airlines Logo
06:00 - 09:28BOS-SFO
6h 28mdirect
£261United Airlines
Find Deal
Mon, 19 May - Sat, 31 May

Expert advice for your flight from San Francisco to Boston

 
Snippets provided in this section are AI-generated based on a summarisation of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are specific to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
SFO

For a smooth departure, use SFO's kerbside check-in with United, Delta, or Southwest for a tip. It's especially handy for families.

Read more about SFOby Blane Bachelor
BOS

Use the free Silver Line bus from BOS to South Station. It's convenient and budget-friendly, taking 20-30 minutes depending on traffic.

Read more about BOSby Blane Bachelor
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on BOS and SFO

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specialising in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favourite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history.

Read more

KAYAK's insights & trends for San Francisco to Boston flights

Get data-powered insights and trends into flights from San Francisco to Boston 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 San Francisco to Boston?

The average price of all round-trip flights from San Francisco to Boston clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to Boston on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from San Francisco to Boston. For your return ticket, we recommend flying on a Wednesday and avoiding Mondays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Boston, 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 Boston is January, where tickets cost £235 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is £353 and £336 respectively.

Can I save money by flying with a stopover from San Francisco to Boston?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.
No, with an average price for the route of £469, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Francisco to Boston, 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 San Francisco to Boston, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know - Cheap tickets from San Francisco to Boston

Low season

January

High season

July

Cheapest flight

£90
Best time to beat the crowds (18% less expensive on average)
Most popular time to fly (14% more expensive on average)
Flight from San Francisco to Boston

When to book flights from San Francisco to Boston

Are your dates flexible? Find out the best times to travel from San Francisco to Boston 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 Boston

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

    In the last 3 days, the lowest price for a flight from San Francisco to Boston was £119 for a one-way ticket and £231 for a return.

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

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

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

    The Airbus A321neo is the aircraft model that flies most regularly on the San Francisco to Boston flight route.

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

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between San Francisco and Boston, with oneworld being the most commonly used for this route.

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

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

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

    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 Boston.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston 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 Boston?

    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 Boston 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 Boston?

    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 Boston 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

KAYAK’s top tips for finding a cheap flight from San Francisco to Boston

  • Looking for a cheap flight from Boston to San Francisco? 25% of our users found flights on this route for £101 or less one-way.

Prefer to fly direct from San Francisco to Boston?

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

Direct departures

San Francisco to Boston Logan Intl

Monday

ANA, Air New Zealand, Alaska Airlines, +22 more

ANA, Air New Zealand, +23 more

Tuesday

ANA, Air New Zealand, Alaska Airlines, +21 more

ANA, Air New Zealand, +22 more

Wednesday

ANA, Air China, Air New Zealand, +21 more

ANA, Air China, +22 more

Thursday

ANA, Air New Zealand, Alaska Airlines, +22 more

ANA, Air New Zealand, +23 more

Friday

ANA, Air New Zealand, Alaska Airlines, +20 more

ANA, Air New Zealand, +21 more

Saturday

ANA, Air China, Air New Zealand, +23 more

ANA, Air China, +24 more

Sunday

ANA, Air New Zealand, Alaska Airlines, +21 more

ANA, Air New Zealand, +22 more

See more direct flights

Direct returns

Boston Logan Intl to San Francisco

Monday

ANA, Air New Zealand, Alaska Airlines, +20 more

ANA, Air New Zealand, +21 more

Tuesday

ANA, Air New Zealand, Alaska Airlines, +19 more

ANA, Air New Zealand, +20 more

Wednesday

ANA, Air China, Air New Zealand, +20 more

ANA, Air China, +21 more

Thursday

ANA, Air New Zealand, Alaska Airlines, +20 more

ANA, Air New Zealand, +21 more

Friday

ANA, Air New Zealand, Alaska Airlines, +20 more

ANA, Air New Zealand, +21 more

Saturday

ANA, Air China, Air New Zealand, +20 more

ANA, Air China, +21 more

Sunday

ANA, Air New Zealand, Alaska Airlines, +21 more

ANA, Air New Zealand, +22 more

See more direct flights
See more direct flights

Top airline flying from San Francisco to Boston

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Boston. 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 Boston? 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.
7.3
JetBlueOverall score based on 2924 reviews
7.3Entertainment
7.6Comfort
8.0Crew
7.5Boarding
6.7Food
Airline reviews

Excellent. Although they used to greet me as a mosaic member and provide a free drink, early boarding helps me to keep coming back to JetBlue.

10.0 ExcellentAnonymous, Apr 2025LGA - FLL
Read more JetBlue reviews

Excellent. Although they used to greet me as a mosaic member and provide a free drink, early boarding helps me to keep coming back to JetBlue.

Great flight. Departed early, arrived early. However they were out of meals for sale. Also, we arrived early and the gate was not available so we sat on the taxiway for quite a while (not JetBlue’s fault).

Cancelled flight with no specific instructions to get a boarding pass for another flight. The whole flight of people were in line for an hour because there was only 1 person to help at the desk. This was unusual for JetBlue.

It was too hot in the cabin. The AC did not help.

Except for the 28 minute delay leaving and the earlier reschedule to a later takeoff time the flight was good.

Loved the leg room and tvs screens on the seats and free WiFi. Wish the price was lower and could save by rebooking

Love the mosaic program, being able to move to an extra space seat for free is awesome

Smooth boarding and friendly crew. Unfortunately as soon as we boarded the unit that provides air circulation failed. The pilot informed us and requested maintenance technicians to check it out. The plane became uncomfortably warm without any fresh air coming in. Plus the repair delayed our departure. I am glad the maintenance crew were able to fix the problem. I also was without use of my tv monitor for the first 1/3rd of the trip.

I paid for the service of having the right to choose my seat and it was not like that, they put me where they wanted and I explained to one of the staff that they were before boarding and they were very rude. I am traveling with the family and they put us in separate seats.

Little snafu at boarding. Staff communicated with gate poorly. Flight attendant was rude making disembark early. This was an older mint class. Needs an overhaul for sure. Food was good. The male flight attendant was really nice.

Everything you need to know for your flight from San Francisco to Boston

Information on your arrival and departure airports

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