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Cheap flights from San Francisco to Boston from $87

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 9/23. 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 (SFO-BOS)

Cheap round-trip flights

Southwest Logo
9:25 pm - 8:15 amSFO-BOS
7h 50m1 stop
Southwest Logo
7:20 am - 1:55 pmBOS-SFO
9h 35m1 stop
$174Southwest
Find Deal
Tue, Nov 4 - Tue, Nov 11
Southwest Logo
6:00 am - 9:35 pmSFO-BOS
12h 35m1 stop
Southwest Logo
5:30 am - 1:30 pmBOS-SFO
11h 00m1 stop
$180Southwest
Find Deal
Sat, Oct 25 - Wed, Oct 29
Southwest Logo
9:05 pm - 10:30 amSFO-BOS
10h 25m1 stop
Southwest Logo
4:45 pm - 10:25 pmBOS-SFO
8h 40m1 stop
$181Southwest
Find Deal
Mon, Aug 25 - Tue, Aug 26
JetBlue Logo
10:00 pm - 6:39 amSFO-BOS
5h 39mnonstop
JetBlue Logo
8:10 pm - 11:59 pmBOS-SFO
6h 49mnonstop
$231JetBlue
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Sat, Sep 6 - Sat, Sep 13
American Airlines Logo
12:47 am - 3:06 pmSFO-BOS
11h 19m1 stop
American Airlines Logo
3:55 pm - 9:52 pmBOS-SFO
8h 57m1 stop
$234American Airlines
Find Deal
Tue, Sep 2 - Wed, Sep 10
Delta Logo
7:05 am - 3:55 pmSFO-BOS
5h 50mnonstop
Delta Logo
6:40 pm - 10:17 pmBOS-SFO
6h 37mnonstop
$241Delta
Find Deal
Sat, Sep 6 - Sat, Sep 13
Alaska Airlines Logo
6:10 am - 3:00 pmSFO-BOS
5h 50mnonstop
Alaska Airlines Logo
7:20 am - 1:44 pmBOS-SFO
9h 24m1 stop
$243Alaska Airlines
Find Deal
Wed, Sep 17 - Wed, Sep 24
American Airlines Logo
8:00 am - 10:40 pmSFO-BOS
11h 40m1 stop
American Airlines Logo
2:45 pm - 9:51 pmBOS-SFO
10h 06m1 stop
$244American Airlines
Find Deal
Sat, Oct 4 - Mon, Oct 6
Alaska Airlines Logo
7:45 am - 4:28 pmSFO-BOS
5h 43mnonstop
Alaska Airlines Logo
6:20 pm - 10:12 pmBOS-SFO
6h 52mnonstop
$249Alaska Airlines
Find Deal
Mon, Dec 1 - Wed, Dec 10
JetBlue Logo
9:00 am - 5:48 pmSFO-BOS
5h 48mnonstop
JetBlue Logo
8:15 pm - 11:50 pmBOS-SFO
6h 35mnonstop
$254JetBlue
Find Deal
Fri, Sep 5 - Fri, Sep 5

Southwest flights from San Francisco to Boston

Our best Southwest deals on San Francisco to Boston flight tickets
Southwest
Nov 4
SFO9:25 pmSan Francisco
7h 50m
1 stop
BOS8:15 amBoston Logan Intl
Nov 11
BOS7:20 amBoston Logan Intl
9h 35m
1 stop
SFO1:55 pmSan Francisco
$174
Find similar
Southwest
Oct 25
SFO6:00 amSan Francisco
12h 35m
1 stop
BOS9:35 pmBoston Logan Intl
Oct 29
BOS5:30 amBoston Logan Intl
11h 00m
1 stop
SFO1:30 pmSan Francisco
$180
Find similar
Southwest
Aug 25
SFO9:05 pmSan Francisco
10h 25m
1 stop
BOS10:30 amBoston Logan Intl
Aug 26
BOS4:45 pmBoston Logan Intl
8h 40m
1 stop
SFO10:25 pmSan Francisco
$181
Find similar

American Airlines flights from San Francisco to Boston

Our best American Airlines deals on San Francisco to Boston flight tickets
American Airlines
Sep 2
SFO12:47 amSan Francisco
11h 19m
1 stop
BOS3:06 pmBoston Logan Intl
Sep 10
BOS3:55 pmBoston Logan Intl
8h 57m
1 stop
SFO9:52 pmSan Francisco
$234
Find similar
American Airlines
Oct 4
SFO8:00 amSan Francisco
11h 40m
1 stop
BOS10:40 pmBoston Logan Intl
Oct 6
BOS2:45 pmBoston Logan Intl
10h 06m
1 stop
SFO9:51 pmSan Francisco
$244
Find similar
American Airlines
Sep 6
SFO11:25 pmSan Francisco
8h 04m
1 stop
BOS10:29 amBoston Logan Intl
Sep 13
BOS5:54 pmBoston Logan Intl
8h 21m
1 stop
SFO11:15 pmSan Francisco
$260
Find similar

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 August 5, 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

Tue 11/4

9:25 pm-8:15 am

1 stop7h 50m

Boston Logan Intl

Tue 11/11

7:20 am-1:55 pm

1 stop9h 35m

$174

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sat 10/25

6:00 am-9:35 pm

1 stop12h 35m

Boston Logan Intl

Wed 10/29

5:30 am-1:30 pm

1 stop11h 00m

$180

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Mon 8/25

9:05 pm-10:30 am

1 stop10h 25m

Boston Logan Intl

Tue 8/26

4:45 pm-10:25 pm

1 stop8h 40m

$181

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sat 9/6

10:00 pm-6:39 am

Nonstop5h 39m

Boston Logan Intl

Sat 9/13

8:10 pm-11:59 pm

Nonstop6h 49m

$231

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 9/2

12:47 am-3:06 pm

1 stop11h 19m

Boston Logan Intl

Wed 9/10

3:55 pm-9:52 pm

1 stop8h 57m

$234

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sat 9/6

7:05 am-3:55 pm

Nonstop5h 50m

Boston Logan Intl

Sat 9/13

6:40 pm-10:17 pm

Nonstop6h 37m

$241

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 9/17

6:10 am-3:00 pm

Nonstop5h 50m

Boston Logan Intl

Wed 9/24

7:20 am-1:44 pm

1 stop9h 24m

$243

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sat 10/4

8:00 am-10:40 pm

1 stop11h 40m

Boston Logan Intl

Mon 10/6

2:45 pm-9:51 pm

1 stop10h 06m

$244

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Mon 12/1

7:45 am-4:28 pm

Nonstop5h 43m

Boston Logan Intl

Wed 12/10

6:20 pm-10:12 pm

Nonstop6h 52m

$249

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Fri 9/5

9:00 am-5:48 pm

Nonstop5h 48m

Boston Logan Intl

Fri 9/5

8:15 pm-11:50 pm

Nonstop6h 35m

$254

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 $315. 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 $367. 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 $468.

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 $327. 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 $429 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 $373 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 $337 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.

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

You could potentially save up to 8% on your flight if you consider stops on a San Francisco to Boston flight.

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

As of August 2025, prices for San Francisco to Boston flights are approximately 9% cheaper 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

$87

Fastest flight time

5h 33m

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 $87. The best round-trip flight deal from San Francisco to Boston found on momondo in the last 72 hours is $174.
The fastest flight from San Francisco to Boston takes 5h 33m
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 39m, 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 $110Free CancellationRating
5.8
3,232 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $144Free CancellationRating
7.8
2,623 reviews
Search Hawaiian Airlines flights
Sun Country AirPriceFrom $160Free CancellationRating
6.9
334 reviews
Search Sun Country Air flights
DeltaPriceFrom $169Free CancellationRating
8.0
7,987 reviews
Search Delta flights
JetBluePriceFrom $196Free CancellationRating
7.2
2,914 reviews
Search JetBlue flights
American AirlinesPriceFrom $197Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $205Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
United AirlinesPriceFrom $227Free CancellationRating
7.4
8,915 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $229Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

  • Delta Flights From San Francisco to Boston

    Delta operates around 9 flights from San Francisco to Boston every week. The average price of these flights found in the last 72 hours has been $372, but momondo users have found Delta deals from San Francisco to Boston from as low as $169 round-trip. Delta has been scored 8.0/10 in 7,987 reviews.

  • Alaska Airlines Flights From San Francisco to Boston

    Across 10,000 Alaska Airlines reviews on momondo, the average score is 8.0/10. Alaska Airlines flies from San Francisco to Boston about 14 times each week, with ticket deals ranging from $229 to $417. 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
Hampton
Old Orchard Beach
York Beach
Plymouth
Kennebunkport
Nashua
Cambridge
Narragansett
Laconia
Brockton
South Yarmouth
Gloucester
Concord
Everett
Wells
Falmouth
Sturbridge

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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