Cheap flights from Boston to San Francisco from $128

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 12/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Hawaiian Airlines Logo
6:52 pm - 10:48 pmBOS-SFO
6h 56mnonstop
Hawaiian Airlines Logo
7:00 am - 3:37 pmSFO-BOS
5h 37mnonstop
$207Hawaiian Airlines
Find Deal
Sat, Dec 6 - Sat, Dec 13
Alaska Airlines Logo
6:52 pm - 10:48 pmBOS-SFO
6h 56mnonstop
Alaska Airlines Logo
7:00 am - 3:37 pmSFO-BOS
5h 37mnonstop
$217Alaska Airlines
Find Deal
Sat, Dec 6 - Tue, Dec 9
Delta Logo
6:10 am - 12:21 pmBOS-SFO
9h 11m1 stop
Delta Logo
2:00 pm - 1:27 amSFO-BOS
8h 27m1 stop
$220Delta
Find Deal
Wed, Dec 3 - Mon, Dec 8
Delta Logo
5:40 am - 12:36 pmBOS-SFO
9h 56m1 stop
Delta Logo
5:55 am - 5:18 pmSFO-BOS
8h 23m1 stop
$223Delta
Find Deal
Thu, Dec 4 - Thu, Dec 11
American Airlines Logo
1:28 pm - 8:27 pmBOS-SFO
9h 59m1 stop
American Airlines Logo
11:15 pm - 9:35 amSFO-BOS
7h 20m1 stop
$225American Airlines
Find Deal
Fri, Dec 5 - Wed, Dec 10
United Airlines Logo
8:30 am - 3:08 pmBOS-SFO
9h 38m1 stop
United Airlines Logo
10:45 am - 7:24 pmSFO-BOS
5h 39mnonstop
$227United Airlines
Find Deal
Sat, Dec 6 - Tue, Dec 9
American Airlines Logo
5:25 am - 12:31 pmBOS-SFO
10h 06m1 stop
American Airlines Logo
8:20 am - 8:32 pmSFO-BOS
9h 12m1 stop
$228American Airlines
Find Deal
Thu, Dec 4 - Fri, Dec 12
United Airlines Logo
5:58 pm - 9:50 pmBOS-SFO
6h 52mnonstop
United Airlines Logo
8:25 am - 5:06 pmSFO-BOS
5h 41mnonstop
$232United Airlines
Find Deal
Wed, Dec 3 - Thu, Dec 4
JetBlue Logo
6:45 am - 10:33 amBOS-SFO
6h 48mnonstop
JetBlue Logo
3:20 pm - 11:51 pmSFO-BOS
5h 31mnonstop
$237JetBlue
Find Deal
Thu, Dec 4 - Thu, Dec 4
JetBlue Logo
9:25 pm - 1:09 amBOS-SFO
6h 44mnonstop
JetBlue Logo
8:15 am - 4:47 pmSFO-BOS
5h 32mnonstop
$249JetBlue
Find Deal
Sun, Nov 23 - Tue, Dec 9

Alaska Airlines flights from Boston to San Francisco

Our best Alaska Airlines deals on Boston to San Francisco flight tickets
Alaska Airlines
Dec 6
BOS6:52 pmBoston Logan Intl
6h 56m
SFO10:48 pmSan Francisco
Dec 9
SFO7:00 amSan Francisco
5h 37m
BOS3:37 pmBoston Logan Intl
Alaska Airlines
Nov 19
BOS6:59 pmBoston Logan Intl
6h 51m
SFO10:50 pmSan Francisco
Dec 3
SFO7:00 amSan Francisco
5h 37m
BOS3:37 pmBoston Logan Intl
Alaska Airlines
Dec 11
BOS6:52 pmBoston Logan Intl
6h 56m
SFO10:48 pmSan Francisco
Dec 13
SFO7:00 amSan Francisco
5h 37m
BOS3:37 pmBoston Logan Intl

United Airlines flights from Boston to San Francisco

Our best United Airlines deals on Boston to San Francisco flight tickets
United Airlines
Dec 6
BOS8:30 amBoston Logan Intl
9h 38m
1 stop
SFO3:08 pmSan Francisco
Dec 9
SFO10:45 amSan Francisco
5h 39m
BOS7:24 pmBoston Logan Intl
United Airlines
Dec 3
BOS5:58 pmBoston Logan Intl
6h 52m
SFO9:50 pmSan Francisco
Dec 4
SFO8:25 amSan Francisco
5h 41m
BOS5:06 pmBoston Logan Intl
United Airlines
Nov 18
BOS5:57 pmBoston Logan Intl
6h 53m
SFO9:50 pmSan Francisco
Nov 27
SFO6:45 amSan Francisco
9h 13m
1 stop
BOS6:58 pmBoston Logan Intl

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated November 6, 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

Sat 12/6

6:52 pm-10:48 pm

Nonstop6h 56m

San Francisco

Sat 12/13

7:00 am-3:37 pm

Nonstop5h 37m

$207

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Sat 12/6

6:52 pm-10:48 pm

Nonstop6h 56m

San Francisco

Tue 12/9

7:00 am-3:37 pm

Nonstop5h 37m

$217

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 12/3

6:10 am-12:21 pm

1 stop9h 11m

San Francisco

Mon 12/8

2:00 pm-1:27 am

1 stop8h 27m

$220

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Thu 12/4

5:40 am-12:36 pm

1 stop9h 56m

San Francisco

Thu 12/11

5:55 am-5:18 pm

1 stop8h 23m

$223

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Fri 12/5

1:28 pm-8:27 pm

1 stop9h 59m

San Francisco

Wed 12/10

11:15 pm-9:35 am

1 stop7h 20m

$225

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Sat 12/6

8:30 am-3:08 pm

1 stop9h 38m

San Francisco

Tue 12/9

10:45 am-7:24 pm

Nonstop5h 39m

$227

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Thu 12/4

5:25 am-12:31 pm

1 stop10h 06m

San Francisco

Fri 12/12

8:20 am-8:32 pm

1 stop9h 12m

$228

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 12/3

5:58 pm-9:50 pm

Nonstop6h 52m

San Francisco

Thu 12/4

8:25 am-5:06 pm

Nonstop5h 41m

$232

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Thu 12/4

6:45 am-10:33 am

Nonstop6h 48m

San Francisco

Thu 12/4

3:20 pm-11:51 pm

Nonstop5h 31m

$237

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Sun 11/23

9:25 pm-1:09 am

Nonstop6h 44m

San Francisco

Tue 12/9

8:15 am-4:47 pm

Nonstop5h 32m

$249

Flights are sorted by cheapest round-trip flights first.

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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?

If you aren’t able to travel to San Francisco during the month of January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $332.

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

The cheapest day to depart from Boston to San Francisco is on a Wednesday when prices can be found for as low as $382. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $556.

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

Our data shows that the cheapest Boston to San Francisco flights are usually those with departure times in the evening. Our users have found flights to San Francisco in the evening for as low as $339. Flights at noon are often more expensive with an average ticket price of $547.

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 $365 when searching weeks out. 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 $327 on momondo.

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

There are 4 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.

Can stopping save me money on Boston to San Francisco flights?

No. A direct flight is the cheapest option for a flight between Boston to San Francisco.

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 round-trip 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

$185

Fastest flight time

6h 43m

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 $185. The best round-trip flight deal from Boston to San Francisco found on momondo in the last 72 hours is $297.
The fastest flight from Boston to San Francisco takes 6h 43m
Direct flights go from Boston to San Francisco every day.
There is 1 airport near San Francisco: San Francisco (SFO)
  • How far is Boston Logan Intl to San Francisco by plane?

    The straight-line distance from Boston Logan Intl to San Francisco is 2690.2 mi. In terms of flight time, this usually takes a little over 6h 44m.

  • 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 for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to San Francisco Airport.

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

    The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted 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
FrontierPriceFrom $84Free CancellationRating
5.8
3,116 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $129Free CancellationRating
7.8
2,804 reviews
Search Hawaiian Airlines flights
Sun Country AirPriceFrom $141Free CancellationRating
6.9
335 reviews
Search Sun Country Air flights
SouthwestPriceFrom $153Free CancellationRating
8.0
4,241 reviews
Search Southwest flights
DeltaPriceFrom $191Free CancellationRating
7.9
8,001 reviews
Search Delta flights
JetBluePriceFrom $198Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
Alaska AirlinesPriceFrom $228Free CancellationRating
8.0
11,246 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $228Free CancellationRating
7.4
9,007 reviews
Search United Airlines flights
American AirlinesPriceFrom $253Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
  • Alaska Airlines Flights From Boston to San Francisco

    The lowest priced Alaska Airlines flight from Boston to San Francisco from the last 72 hours was $228. Generally, Alaska Airlines has 2 flights on this route every week with an average price of $367. Alaska Airlines is rated 8.0/10 by our users.

  • Delta Flights From Boston to San Francisco

    The best Delta deal for Boston to San Francisco flight tickets found on momondo in the last 72 hours was $191, round-trip. It should be noted that an average Delta flight deal for this route in this time was higher, at $367 round-trip. Delta operates 3 flights out of Boston into San Francisco in an average week, so prices vary by time and availability. 8,001 Delta reviews by users on momondo have scored the airline at 7.9/10.

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Carmel-by-the-Sea
Modesto
Sonoma
Bodega Bay
Roseville
Calistoga
Hayward
Big Sur
Santa Clara
Daly City
Fremont
Berkeley
Vallejo
Walnut Creek
Half Moon Bay
Salinas
Livermore
Turlock
South San Francisco

Why use momondo?

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

Finding the right flight to San Francisco from Boston is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Francisco quick and easy, saving you time and money.

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

All flight searches from Boston to San Francisco on momondo can be filtered to show those which offer 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 not ready to book a flight from Boston to San Francisco now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Francisco and let you know when they change.

An easier way to manage your San Francisco trip

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

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1 adult
Sat 12/6
Sat 12/13

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