SFO - BOS

£119 Find Cheap Flights from San Francisco to Boston – Compare and Save

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 22/9. 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
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return fare
£217
Typical prices: £203-£432
JetBlue
Sat 14/11Tue 17/11
SFO - BOS • 1 stop
Cheapest direct flights
£234
Typical prices: £203-£437
JetBlue
Tue 3/11Wed 4/11
SFO - BOS • Direct
Top airlines
Cheapest • from £217 (return)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Direct flights
You can fly direct with Delta, JetBlue, and United Airlines. Average duration is 5h 48m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
Most punctual • 84% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 33% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 21% price drop
Most popular
Good to know
Good to know
+1
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Good to know
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Flight Deals

Cheap Flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from San Francisco to Boston

Sat, 14 Nov - Tue, 17 Nov
JetBlue Logo
06:00 - 16:47
SFO
-
BOS
7h 47m
1 stop
JetBlue Logo
16:00 - 23:58
BOS
-
SFO
10h 58m
1 stop
£217JetBlue
Sat, 14 Nov - Tue, 17 Nov
JetBlue Logo
06:00 - 16:47
SFO
-
BOS
7h 47m
1 stop
JetBlue Logo
13:00 - 19:35
BOS
-
SFO
9h 35m
1 stop
£217JetBlue
Sat, 23 Jan - Tue, 2 Feb
JetBlue Logo
07:00 - 18:48
SFO
-
BOS
8h 48m
1 stop
JetBlue Logo
17:07 - 00:22
BOS
-
SFO
10h 15m
1 stop
£217JetBlue
Sat, 14 Nov - Wed, 18 Nov
JetBlue Logo
06:00 - 16:47
SFO
-
BOS
7h 47m
1 stop
JetBlue Logo
09:45 - 19:35
BOS
-
SFO
12h 50m
1 stop
£217JetBlue
Sat, 7 Nov - Wed, 11 Nov
JetBlue Logo
12:30 - 23:48
SFO
-
BOS
8h 18m
1 stop
JetBlue Logo
13:00 - 21:39
BOS
-
SFO
11h 39m
1 stop
£217JetBlue
Wed, 9 Sep - Sat, 12 Sep
Delta Logo
07:10 - 15:57
SFO
-
BOS
5h 47mdirect
Delta Logo
07:35 - 11:04
BOS
-
SFO
6h 29mdirect
£238Delta
Sat, 12 Sep - Tue, 15 Sep
Delta Logo
15:00 - 23:46
SFO
-
BOS
5h 46mdirect
Delta Logo
07:35 - 11:04
BOS
-
SFO
6h 29mdirect
£238Delta
Wed, 30 Sep - Sat, 3 Oct
Delta Logo
15:00 - 23:46
SFO
-
BOS
5h 46mdirect
Delta Logo
07:35 - 11:04
BOS
-
SFO
6h 29mdirect
£238Delta
Wed, 14 Oct - Sat, 17 Oct
Delta Logo
15:00 - 23:39
SFO
-
BOS
5h 39mdirect
Delta Logo
07:45 - 11:25
BOS
-
SFO
6h 40mdirect
£238Delta
Tue, 13 Oct - Sat, 17 Oct
Delta Logo
15:00 - 23:39
SFO
-
BOS
5h 39mdirect
Delta Logo
07:45 - 11:25
BOS
-
SFO
6h 40mdirect
£238Delta
Booking Insights

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.

How much is a return flight from San Francisco to Boston?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from San Francisco to Boston departing in November.

Flight prices are below average for this route right now.

Flights to Boston from San Francisco usually cost between £251 and £409 in November.
The lowest price found in the past 5 days was £217 on JetBlue (14 Nov–17 Nov).

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 Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Wednesday is the most expensive day to fly from San Francisco to Boston. For your return ticket, we recommend flying on a Friday and avoiding Saturdays 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 £251 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is £376 and £366 respectively.

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, which saves you about 33% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Expert advice

Expert advice for your flight from San Francisco to Boston

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on BOS and SFO

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.

Good to know - Cheap tickets from San Francisco to Boston

Low season

January

Cheapest flight

£119
Best time to beat the crowds (21% less expensive on average)
Most popular time to fly (19% 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 5 days, the lowest price for a flight from San Francisco to Boston was £119 for a one-way ticket and £217 for a return.

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

    All the following airlines offer inflight Wi-Fi service on the San Francisco to Boston flight route: JetBlue, Delta, Iberia, British Airways, Finnair, Alaska Airlines, and Aer Lingus.

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

    The Airbus A318/A319/A320/A321 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?

    SkyTeam is the only airline alliance operating flights between San Francisco and Boston.

  • 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.

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

  • Looking for a cheap flight from San Francisco to Boston? 25% of our users found flights on this route for £216 or less one-way and £231 or less round-trip.

Prefer to fly direct from San Francisco to Boston?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from San Francisco to Boston Logan Intl.
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

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Tuesday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Wednesday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Thursday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Friday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Saturday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Sunday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

See more direct flights

Direct returns

Boston Logan Intl to San Francisco

Monday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Tuesday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Wednesday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Thursday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Friday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Saturday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Sunday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

See more direct flights

Reviews of the 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.
7.8
DeltaOverall score based on 8482 reviews
7.2Food
7.8Entertainment
8.5Crew
7.8Comfort
8.1Boarding
Airline reviews

Flight was delayed multiple time and for more than 1 hr. My onward flight from BOS to MCI was also delayed. These delays have caused me so much inconvenience and Delta does nothing to ensure flights take off on time. No one knew why the inbound flight was delayed and what was the issue.

2.0 MediocrePreeti, Jul 2026
MCI - BOS
Read more Delta reviews

Flight was delayed multiple time and for more than 1 hr. My onward flight from BOS to MCI was also delayed. These delays have caused me so much inconvenience and Delta does nothing to ensure flights take off on time. No one knew why the inbound flight was delayed and what was the issue.

This flight was originally delayed by ~45 minutes; which is fine. However, there were additional delays due to late offboarding of the prior flight, unclear issues with the boarding process, delays on the tarmac, and exceptionally long taxiing. None of these issues were communicated proactively. Additionally, the flight had exceptionally rough turbulence, which led to a very uncomfortable flight and no traditional beverage service. Again, this is understandable, but it was not communicated up-front by the flight team.

My flight was delayed by 4 hours in 30 minute increments. The gate agents were amazing but the communication was not. We were told that there was a maintenance issue but they didn't know what it was. That didn't inspire confidence. Then they said they found it and it was fixed and the pilot just needed to sign off. Then the pilot needed to talk to the other pilot from the arriving flight and we'd be fine. Then we were waiting for the pilot to call back. Then the maintenance issue wasn't fixed. Then they decided we were getting a new plane (why didn't they decide this earlier??). Fine. But then they announced we were changing gates AND terminals. And we were boarding in 20 minutes. So we all had to run to the new terminal gate. We could have taken off at that time, but we then had to wait for all the people who rebooked on a different flight to book this flight again. That took 30+ minutes because there was only one gate agent. When everyone ditched this flight, I saw it as an opportunity to upgrade to comfort. Delta, the greedy jerks they are, charged me $121. After their delay, their fault, their issues, couldn't even discount an upgrade. They only handed out $12 meal vouchers for the delay. I can't even get a snack from starbucks for that.

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

My flight yesterday evening was delayed 3.5 hours with no water or food service. Poor experience

The tray table was broken and the food was terrible.

Flight delayed. Air broken. Cabin was hot enough to pass out. Delta shuttle’s becoming worse and worse.

It was terrible, if they ran flights on time it would make a big difference.

Delta flight was great from the check in all the way to arrival. However, I had a very bad experience. I requested a wheelchair and the wheelchair employee that went to pick me up from the plane in Boston to bring me to the baggage claims told me I have to pay him. I was under the impression that it was a free service and I usually give tips but the person forced me to pay and since I said no because I was upset with his demand when my daughter walked in to pick me up he demanded payment from my daughter who paid him thinking maybe now it is a charged service.

Everything was great but the difference in paying for comfort + did not seem worth it.

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

Information on your arrival and departure airports