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Cheap flights from Boston to San Francisco from £97

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to San Francisco departing on 19/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Alaska Airlines Logo
16:24 - 23:48BOS-SFO
10h 24m1 stop
Alaska Airlines Logo
07:00 - 17:52SFO-BOS
7h 52m1 stop
£157Alaska Airlines
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to, 11 joulu - ma, 15 joulu
Alaska Airlines Logo
16:20 - 22:47BOS-SFO
9h 27m1 stop
Alaska Airlines Logo
07:00 - 17:44SFO-BOS
7h 44m1 stop
£164Alaska Airlines
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ti, 20 tammi - ti, 27 tammi
JetBlue Logo
13:40 - 20:10BOS-SFO
9h 30m1 stop
JetBlue Logo
07:00 - 20:07SFO-BOS
10h 07m1 stop
£165JetBlue
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pe, 12 joulu - ti, 16 joulu
JetBlue Logo
21:25 - 01:09BOS-SFO
6h 44mdirect
JetBlue Logo
21:16 - 05:50SFO-BOS
5h 34mdirect
£169JetBlue
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ke, 26 marras - ke, 3 joulu
United Airlines Logo
08:00 - 11:54BOS-SFO
6h 54mdirect
United Airlines Logo
22:55 - 07:36SFO-BOS
5h 41mdirect
£174United Airlines
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to, 27 marras - ke, 3 joulu
Delta Logo
20:05 - 23:59BOS-SFO
6h 54mdirect
Delta Logo
07:10 - 15:51SFO-BOS
5h 41mdirect
£177Delta
Find Deal
la, 13 joulu - ke, 28 tammi
United Airlines Logo
06:00 - 09:45BOS-SFO
6h 45mdirect
United Airlines Logo
13:05 - 21:43SFO-BOS
5h 38mdirect
£180United Airlines
Find Deal
to, 4 joulu - ma, 8 joulu
Delta Logo
20:05 - 23:59BOS-SFO
6h 54mdirect
Delta Logo
21:41 - 06:24SFO-BOS
5h 43mdirect
£181Delta
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to, 4 joulu - ke, 10 joulu
Southwest Logo
06:50 - 14:55BOS-SFO
11h 05m1 stop
Southwest Logo
21:30 - 08:50SFO-BOS
8h 20m1 stop
£199Southwest
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ke, 7 tammi - su, 11 tammi
Southwest Logo
17:00 - 22:30BOS-SFO
8h 30m1 stop
Southwest Logo
10:50 - 21:40SFO-BOS
7h 50m1 stop
£207Southwest
Find Deal
ke, 3 joulu - to, 4 joulu

Delta flights from Boston to San Francisco

Our best Delta deals on Boston to San Francisco flight tickets
Delta
13 Dec
BOS20:05Boston Logan Intl
6h 54m
SFO23:59San Francisco
28 Jan
SFO07:10San Francisco
5h 41m
BOS15:51Boston Logan Intl
£177
Find similar
Delta
17 Nov
BOS20:05Boston Logan Intl
6h 54m
SFO23:59San Francisco
18 Nov
SFO21:48San Francisco
5h 37m
BOS06:25Boston Logan Intl
£180
Find similar
Delta
4 Dec
BOS20:05Boston Logan Intl
6h 54m
SFO23:59San Francisco
10 Dec
SFO21:41San Francisco
5h 43m
BOS06:24Boston Logan Intl
£181
Find similar

Southwest flights from Boston to San Francisco

Our best Southwest deals on Boston to San Francisco flight tickets
Southwest
7 Jan
BOS06:50Boston Logan Intl
11h 05m
1 stop
SFO14:55San Francisco
11 Jan
SFO21:30San Francisco
8h 20m
1 stop
BOS08:50Boston Logan Intl
£199
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Southwest
3 Dec
BOS17:00Boston Logan Intl
8h 30m
1 stop
SFO22:30San Francisco
4 Dec
SFO10:50San Francisco
7h 50m
1 stop
BOS21:40Boston Logan Intl
£207
Find similar
Southwest
15 Nov
BOS05:20Boston Logan Intl
8h 40m
1 stop
SFO11:00San Francisco
18 Nov
SFO05:50San Francisco
10h 30m
2 stops
BOS19:20Boston Logan Intl
£241
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momondo Fare Finder

 
Customise your flight search to find flights from Boston to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 4 marraskuu 2025.
Use the filters below to find and compare flights from Boston to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

to 11/12

16:24-23:48

1 stop10h 24m

San Francisco

ma 15/12

07:00-17:52

1 stop7h 52m

£157

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

ti 20/1

16:20-22:47

1 stop9h 27m

San Francisco

ti 27/1

07:00-17:44

1 stop7h 44m

£164

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

pe 12/12

13:40-20:10

1 stop9h 30m

San Francisco

ti 16/12

07:00-20:07

1 stop10h 07m

£165

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

ke 26/11

21:25-01:09

Nonstop6h 44m

San Francisco

ke 3/12

21:16-05:50

Nonstop5h 34m

£169

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

to 27/11

08:00-11:54

Nonstop6h 54m

San Francisco

ke 3/12

22:55-07:36

Nonstop5h 41m

£174

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

la 13/12

20:05-23:59

Nonstop6h 54m

San Francisco

ke 28/1

07:10-15:51

Nonstop5h 41m

£177

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

to 4/12

06:00-09:45

Nonstop6h 45m

San Francisco

ma 8/12

13:05-21:43

Nonstop5h 38m

£180

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

to 4/12

20:05-23:59

Nonstop6h 54m

San Francisco

ke 10/12

21:41-06:24

Nonstop5h 43m

£181

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

ke 7/1

06:50-14:55

1 stop11h 05m

San Francisco

su 11/1

21:30-08:50

1 stop8h 20m

£199

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

ke 3/12

17:00-22:30

1 stop8h 30m

San Francisco

to 4/12

10:50-21:40

1 stop7h 50m

£207

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to San Francisco from

How to get the cheapest flight ticket from Boston to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Francisco?

The month of January is, on average, the cheapest month to fly to San Francisco from Boston, with most prices found around £252. If you are unable to visit San Francisco during the month of January, then departing from Boston during the month September is also very affordable. Most momondo users find prices during this month for around £253.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart on your flight to San Francisco is on a Wednesday when prices can be found for as low as £218. This is often the case because there is less demand to fly during this day of the week. Flights from Boston to San Francisco on a Saturday will generally be more expensive and average around £1,682. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to San Francisco?

Our most recent data shows that the best time of day to fly to San Francisco is in the evening. Flights from Boston to San Francisco during this time can be as low as £348. Try not to purchase tickets at midday because they tend to be around £731. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Boston Logan Intl to San Francisco flight route?

Fly from Boston Logan Intl to San Francisco for the best Boston Logan Intl - San Francisco flight prices

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

You are more likely to see cheaper flights to San Francisco from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around £278 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Boston for as low as £249 on momondo.

What cabin class options are available on Boston Logan Intl to San Francisco flights?

There are 3 cabin classes available to choose from on Boston Logan Intl to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Boston to San Francisco flight prices changed over time?

As of November 2025, prices for Boston to San Francisco flights are approximately 1% more expensive when compared to flights at the same time last year.

When to book flights from Boston to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to San Francisco according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Boston to San Francisco (BOS to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to San Francisco

Best price found

£235

Fastest flight time

6h 44m

Direct flights

Every day

Airports in San Francisco

1 airport
The best one-way flight to San Francisco from Boston in the past 72 hours is £235. The best return flight deal from Boston to San Francisco found on momondo in the last 72 hours is £428.
The fastest flight from Boston to San Francisco takes 6h 44m
Direct flights go from Boston to San Francisco every day.
There is 1 airport near San Francisco: San Francisco (SFO)
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  • How far is Boston Logan Intl to San Francisco by plane?

    The distance between Boston Logan Intl and San Francisco is about 2690.2 mi. 6h 44m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to San Francisco Airport?

    Prices for flights from Boston Logan Intl Airport to San Francisco Airport are updated daily.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to San Francisco Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to San Francisco Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to San Francisco Airport.

  • What documentation or ID do you need to fly to San Francisco Airport?

    The required travel and health documents for your San Francisco Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Francisco Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Boston to San Francisco?

  • What is the most popular airline from Boston to San Francisco?

Best airlines flying from Boston to San Francisco

Compare and see reviews for airlines that fly from Boston to San Francisco with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom £150Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights

  • JetBlue Flights From Boston to San Francisco

    JetBlue flight deals from Boston to San Francisco start from £150 round-trip. Over the 22 JetBlue flights for this route in a normal week, average airfare is usually £345 round-trip - but some users have found much cheaper deals with momondo.

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Carmel-by-the-Sea
Santa Clara
Seaside
Big Sur
Rohnert Park
Sunnyvale
San Ramon
South San Francisco
Capitola
Campbell
Palo Alto
Sausalito
San Bruno
Woodland
Santa Cruz
Redwood City
Burlingame
Modesto
Aptos
Fremont

Why use momondo?

Why should I use momondo to find a flight deal from Boston to San Francisco?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Francisco from Boston.

Can I find flights from Boston to San Francisco with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Boston to San Francisco flights to just show those with flexible booking policies.

How can momondo help me find flights from Boston to San Francisco?

Once all potential Boston to San Francisco flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Boston to San Francisco right now. Can momondo alert me if prices change?

If you are simply researching potential flights to San Francisco, momondo offers a useful price alert feature which will track prices for flights to San Francisco from Boston and alert you when they change.

An easier way to manage your San Francisco trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
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