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Cheap flights from San Francisco to Boston from $131

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Boston departing on 10/2. 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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Find the cheapest flights from San Francisco to Boston

Cheap round-trip flights

Frontier Logo
10:23 pm - 10:48 amSFO-BOS
9h 25m1 stop
Frontier Logo
9:55 am - 9:11 pmBOS-SFO
14h 16m1 stop
$221Frontier
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Fri, Nov 7 - Mon, Nov 10
Frontier Logo
10:23 pm - 8:55 amSFO-BOS
31h 32m1 stop
Frontier Logo
11:43 am - 9:11 pmBOS-SFO
12h 28m1 stop
$222Frontier
Find Deal
Sat, Oct 25 - Sat, Nov 1
Frontier Logo
8:09 pm - 10:48 amSFO-BOS
11h 39m2 stops
Frontier Logo
12:20 pm - 12:14 amBOS-SFO
14h 54m2 stops
$234Frontier
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Fri, Oct 31 - Mon, Nov 3
Alaska Airlines Logo
7:11 am - 4:00 pmSFO-BOS
5h 49mnonstop
Alaska Airlines Logo
8:25 pm - 12:05 amBOS-SFO
6h 40mnonstop
$261Alaska Airlines
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Mon, Oct 20 - Thu, Oct 23
Alaska Airlines Logo
7:11 am - 4:00 pmSFO-BOS
5h 49mnonstop
Alaska Airlines Logo
8:25 pm - 12:05 amBOS-SFO
6h 40mnonstop
$263Alaska Airlines
Find Deal
Tue, Oct 21 - Wed, Oct 22
JetBlue Logo
7:10 am - 3:57 pmSFO-BOS
5h 47mnonstop
JetBlue Logo
6:45 pm - 10:24 amBOS-SFO
18h 39m1 stop
$264JetBlue
Find Deal
Tue, Oct 7 - Tue, Oct 7
JetBlue Logo
7:10 am - 3:57 pmSFO-BOS
5h 47mnonstop
JetBlue Logo
8:15 pm - 12:15 amBOS-SFO
7h 00mnonstop
$275JetBlue
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Sun, Oct 12 - Tue, Oct 21
United Airlines Logo
11:56 pm - 10:31 amSFO-BOS
7h 35m1 stop
United Airlines Logo
8:00 am - 11:54 amBOS-SFO
6h 54mnonstop
$289United Airlines
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Wed, Oct 22 - Sat, Nov 1
Delta Logo
9:47 pm - 6:25 amSFO-BOS
5h 38mnonstop
Delta Logo
8:05 pm - 11:58 pmBOS-SFO
6h 53mnonstop
$293Delta
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Wed, Nov 26 - Wed, Dec 3
Delta Logo
7:00 am - 3:42 pmSFO-BOS
5h 42mnonstop
Delta Logo
6:15 am - 10:12 pmBOS-SFO
18h 57m1 stop
$296Delta
Find Deal
Mon, Oct 20 - Wed, Oct 29

Delta flights from San Francisco to Boston

Our best Delta deals on San Francisco to Boston flight tickets
Delta
Nov 26
SFO9:47 pmSan Francisco
5h 38m
BOS6:25 amBoston Logan Intl
Dec 3
BOS8:05 pmBoston Logan Intl
6h 53m
SFO11:58 pmSan Francisco
$293
Find similar
Delta
Oct 20
SFO7:00 amSan Francisco
5h 42m
BOS3:42 pmBoston Logan Intl
Oct 29
BOS6:15 amBoston Logan Intl
18h 57m
1 stop
SFO10:12 pmSan Francisco
$296
Find similar
Delta
Oct 12
SFO7:00 amSan Francisco
5h 42m
BOS3:42 pmBoston Logan Intl
Oct 21
BOS8:55 pmBoston Logan Intl
13h 30m
1 stop
SFO7:25 amSan Francisco
$297
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JetBlue flights from San Francisco to Boston

Our best JetBlue deals on San Francisco to Boston flight tickets
JetBlue
Oct 7
SFO7:10 amSan Francisco
5h 47m
BOS3:57 pmBoston Logan Intl
Oct 7
BOS6:45 pmBoston Logan Intl
18h 39m
1 stop
SFO10:24 amSan Francisco
$264
Find similar
JetBlue
Oct 12
SFO7:10 amSan Francisco
5h 47m
BOS3:57 pmBoston Logan Intl
Oct 21
BOS8:15 pmBoston Logan Intl
7h 00m
SFO12:15 amSan Francisco
$275
Find similar
JetBlue
Nov 15
SFO10:35 amSan Francisco
27h 50m
1 stop
BOS5:25 pmBoston Logan Intl
Nov 16
BOS8:07 pmBoston Logan Intl
6h 47m
SFO11:54 pmSan Francisco
$278
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momondo Fare Finder

 
Customize your flight search to find flights from San Francisco to Boston 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 September 17, 2025.
Use the filters below to find and compare flights from San Francisco to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Fri 11/7

10:23 pm-10:48 am

1 stop9h 25m

Boston Logan Intl

Mon 11/10

9:55 am-9:11 pm

1 stop14h 16m

$221

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sat 10/25

10:23 pm-8:55 am

1 stop31h 32m

Boston Logan Intl

Sat 11/1

11:43 am-9:11 pm

1 stop12h 28m

$222

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Fri 10/31

8:09 pm-10:48 am

2 stops11h 39m

Boston Logan Intl

Mon 11/3

12:20 pm-12:14 am

2 stops14h 54m

$234

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Mon 10/20

7:11 am-4:00 pm

Nonstop5h 49m

Boston Logan Intl

Thu 10/23

8:25 pm-12:05 am

Nonstop6h 40m

$261

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 10/21

7:11 am-4:00 pm

Nonstop5h 49m

Boston Logan Intl

Wed 10/22

8:25 pm-12:05 am

Nonstop6h 40m

$263

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 10/7

7:10 am-3:57 pm

Nonstop5h 47m

Boston Logan Intl

Tue 10/7

6:45 pm-10:24 am

1 stop18h 39m

$264

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sun 10/12

7:10 am-3:57 pm

Nonstop5h 47m

Boston Logan Intl

Tue 10/21

8:15 pm-12:15 am

Nonstop7h 00m

$275

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 10/22

11:56 pm-10:31 am

1 stop7h 35m

Boston Logan Intl

Sat 11/1

8:00 am-11:54 am

Nonstop6h 54m

$289

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 11/26

9:47 pm-6:25 am

Nonstop5h 38m

Boston Logan Intl

Wed 12/3

8:05 pm-11:58 pm

Nonstop6h 53m

$293

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Mon 10/20

7:00 am-3:42 pm

Nonstop5h 42m

Boston Logan Intl

Wed 10/29

6:15 am-10:12 pm

1 stop18h 57m

$296

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Boston from

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

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 Boston?

In general, January is the cheapest month to fly from San Francisco to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $316. If you aren’t able to travel during the month of January, then book flights to Boston from San Francisco during February instead. Flights to Boston in February, while not as cheap as those in January, still average around $317.

What is the cheapest day to depart on your flight to Boston?

The cheapest day to depart from San Francisco to Boston is on a Tuesday when prices can be found for as low as $374. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Sunday is $479.

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

According to our data, the cheapest time of day to fly to Boston is in the afternoon. momondo users have found flights departing from San Francisco to Boston in the afternoon for as low as $364. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Boston, so prices are often more expensive at around $434 per ticket.

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

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

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

You are more likely to see cheaper flights to Boston from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $378 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from San Francisco for as low as $344 on momondo.

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

There are 4 cabin classes available to choose from on San Francisco to Boston Logan Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of September 2025, prices for San Francisco to Boston flights are approximately 5% more expensive when compared to flights at the same time last year.

When to book flights from San Francisco to Boston

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

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

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

Best Price Found

$165

Fastest flight time

5h 31m

Direct flights

Every day

Airports in Boston

1 airport
The best one-way flight to Boston from San Francisco in the past 72 hours is $165. The best round-trip flight deal from San Francisco to Boston found on momondo in the last 72 hours is $268.
The fastest flight from San Francisco to Boston takes 5h 31m
Direct flights go from San Francisco to Boston every day.
There is 1 airport near Boston: Boston Logan Intl (BOS)
Search flight deals

  • How far is San Francisco to Boston Logan Intl by plane?

    San Francisco and Boston Logan Intl are 2690.2 mi apart from one another. Flights usually cover this in 5h 38m, depending on flying conditions and air traffic around both airports.

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

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

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

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

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The travel and health documents required for your trip to Boston Logan Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Boston Logan Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

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

Best airlines flying from San Francisco to Boston

Compare and see reviews for airlines that fly from San Francisco to Boston with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $104Free CancellationRating
5.8
3,173 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $144Free CancellationRating
7.8
2,729 reviews
Search Hawaiian Airlines flights
Sun Country AirPriceFrom $160Free CancellationRating
6.9
330 reviews
Search Sun Country Air flights
DeltaPriceFrom $176Free CancellationRating
7.9
7,961 reviews
Search Delta flights
JetBluePriceFrom $198Free CancellationRating
7.2
2,914 reviews
Search JetBlue flights
SouthwestPriceFrom $205Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
United AirlinesPriceFrom $227Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $233Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $246Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

  • Alaska Airlines Flights From San Francisco to Boston

    Alaska Airlines operates around 6 flights from San Francisco to Boston every week. The average price of these flights found in the last 72 hours has been $412, but momondo users have found Alaska Airlines deals from San Francisco to Boston from as low as $233 round-trip. Alaska Airlines has been scored 8.0/10 in 10,000 reviews.

  • Delta Flights From San Francisco to Boston

    Across 7,961 Delta reviews on momondo, the average score is 7.9/10. Delta flies from San Francisco to Boston about 13 times each week, with ticket deals ranging from $176 to $375. Price data is based on momondo searches in the last 72 hours.

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Hampton Beach
Salem
Ogunquit
Old Orchard Beach
Hampton
York Beach
Plymouth
Kennebunkport
Cambridge
South Yarmouth
Narragansett
Nashua
Gloucester
Brockton
Laconia
Falmouth
Concord
Everett
Wells
Chatham

Why use momondo?

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

It is quick and easy to find San Francisco to Boston flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Boston that suits you.

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

momondo does allow users to show only those flights to Boston from San Francisco which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between San Francisco and Boston by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

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

An easier way to manage your Boston 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.
Start using Trips
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