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Cheap flights from San Francisco to Boston from $129

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

JetBlue Logo
7:10 am - 3:57 pmSFO-BOS
5h 47mnonstop
JetBlue Logo
5:59 pm - 9:43 pmBOS-SFO
6h 44mnonstop
$232JetBlue
Find Deal
Tue, Sep 23 - Tue, Sep 23
Hawaiian Airlines Logo
6:10 am - 3:00 pmSFO-BOS
5h 50mnonstop
Hawaiian Airlines Logo
8:23 pm - 11:52 pmBOS-SFO
6h 29mnonstop
$234Hawaiian Airlines
Find Deal
Sat, Sep 20 - Fri, Sep 26
JetBlue Logo
9:10 pm - 5:44 amSFO-BOS
5h 34mnonstop
JetBlue Logo
8:23 pm - 12:10 amBOS-SFO
6h 47mnonstop
$235JetBlue
Find Deal
Fri, Oct 31 - Sat, Nov 8
Alaska Airlines Logo
6:10 am - 3:00 pmSFO-BOS
5h 50mnonstop
Alaska Airlines Logo
8:23 pm - 11:52 pmBOS-SFO
6h 29mnonstop
$237Alaska Airlines
Find Deal
Sat, Sep 20 - Wed, Sep 24
Delta Logo
7:05 am - 3:47 pmSFO-BOS
5h 42mnonstop
Delta Logo
8:45 pm - 12:21 amBOS-SFO
6h 36mnonstop
$238Delta
Find Deal
Sat, Sep 20 - Fri, Sep 26
Alaska Airlines Logo
6:10 am - 3:00 pmSFO-BOS
5h 50mnonstop
Alaska Airlines Logo
8:23 pm - 11:52 pmBOS-SFO
6h 29mnonstop
$248Alaska Airlines
Find Deal
Wed, Sep 17 - Thu, Sep 25
American Airlines Logo
11:25 pm - 10:29 amSFO-BOS
8h 04m1 stop
American Airlines Logo
5:36 pm - 11:09 pmBOS-SFO
8h 33m1 stop
$256American Airlines
Find Deal
Sat, Sep 20 - Fri, Sep 26
Delta Logo
9:51 pm - 6:35 amSFO-BOS
5h 44mnonstop
Delta Logo
7:55 am - 11:33 amBOS-SFO
6h 38mnonstop
$259Delta
Find Deal
Fri, Sep 19 - Tue, Sep 23
United Airlines Logo
12:55 pm - 11:54 pmSFO-BOS
7h 59m1 stop
United Airlines Logo
6:00 am - 9:45 amBOS-SFO
6h 45mnonstop
$265United Airlines
Find Deal
Thu, Feb 12 - Sun, Feb 15
United Airlines Logo
9:15 pm - 6:01 amSFO-BOS
5h 46mnonstop
United Airlines Logo
7:12 pm - 12:59 amBOS-SFO
8h 47m1 stop
$267United Airlines
Find Deal
Mon, Sep 15 - Fri, Sep 19

Hawaiian Airlines flights from San Francisco to Boston

Our best Hawaiian Airlines deals on San Francisco to Boston flight tickets
Hawaiian Airlines
Sep 20
SFO6:10 amSan Francisco
5h 50m
BOS3:00 pmBoston Logan Intl
Sep 26
BOS8:23 pmBoston Logan Intl
6h 29m
SFO11:52 pmSan Francisco
$234
Find similar
Hawaiian Airlines
Sep 20
SFO6:10 amSan Francisco
5h 50m
BOS3:00 pmBoston Logan Intl
Sep 26
BOS8:23 pmBoston Logan Intl
6h 29m
SFO11:52 pmSan Francisco
$246
Find similar
Hawaiian Airlines
Sep 23
SFO6:10 amSan Francisco
5h 50m
BOS3:00 pmBoston Logan Intl
Sep 30
BOS7:45 amBoston Logan Intl
8h 27m
1 stop
SFO1:12 pmSan Francisco
$247
Find similar

JetBlue flights from San Francisco to Boston

Our best JetBlue deals on San Francisco to Boston flight tickets
JetBlue
Sep 23
SFO7:10 amSan Francisco
5h 47m
BOS3:57 pmBoston Logan Intl
Sep 23
BOS5:59 pmBoston Logan Intl
6h 44m
SFO9:43 pmSan Francisco
$232
Find similar
JetBlue
Oct 31
SFO9:10 pmSan Francisco
5h 34m
BOS5:44 amBoston Logan Intl
Nov 8
BOS8:23 pmBoston Logan Intl
6h 47m
SFO12:10 amSan Francisco
$235
Find similar
JetBlue
Sep 29
SFO1:55 pmSan Francisco
6h 03m
BOS10:58 pmBoston Logan Intl
Oct 2
BOS8:10 pmBoston Logan Intl
6h 49m
SFO11:59 pmSan Francisco
$236
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 28, 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 9/23

7:10 am-3:57 pm

Nonstop5h 47m

Boston Logan Intl

Tue 9/23

5:59 pm-9:43 pm

Nonstop6h 44m

$232

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sat 9/20

6:10 am-3:00 pm

Nonstop5h 50m

Boston Logan Intl

Fri 9/26

8:23 pm-11:52 pm

Nonstop6h 29m

$234

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Fri 10/31

9:10 pm-5:44 am

Nonstop5h 34m

Boston Logan Intl

Sat 11/8

8:23 pm-12:10 am

Nonstop6h 47m

$235

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sat 9/20

6:10 am-3:00 pm

Nonstop5h 50m

Boston Logan Intl

Wed 9/24

8:23 pm-11:52 pm

Nonstop6h 29m

$237

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sat 9/20

7:05 am-3:47 pm

Nonstop5h 42m

Boston Logan Intl

Fri 9/26

8:45 pm-12:21 am

Nonstop6h 36m

$238

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 9/17

6:10 am-3:00 pm

Nonstop5h 50m

Boston Logan Intl

Thu 9/25

8:23 pm-11:52 pm

Nonstop6h 29m

$248

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sat 9/20

11:25 pm-10:29 am

1 stop8h 04m

Boston Logan Intl

Fri 9/26

5:36 pm-11:09 pm

1 stop8h 33m

$256

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Fri 9/19

9:51 pm-6:35 am

Nonstop5h 44m

Boston Logan Intl

Tue 9/23

7:55 am-11:33 am

Nonstop6h 38m

$259

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Thu 2/12

12:55 pm-11:54 pm

1 stop7h 59m

Boston Logan Intl

Sun 2/15

6:00 am-9:45 am

Nonstop6h 45m

$265

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Mon 9/15

9:15 pm-6:01 am

Nonstop5h 46m

Boston Logan Intl

Fri 9/19

7:12 pm-12:59 am

1 stop8h 47m

$267

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 $373. 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 $478.

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 $352. 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 $375 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 $336 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 August 2025, prices for San Francisco to Boston flights are approximately 0% 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

$181

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 $181. The best round-trip flight deal from San Francisco to Boston found on momondo in the last 72 hours is $279.
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 34m, 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
3,204 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $144Free CancellationRating
7.8
2,688 reviews
Search Hawaiian Airlines flights
Sun Country AirPriceFrom $160Free CancellationRating
6.9
331 reviews
Search Sun Country Air flights
DeltaPriceFrom $170Free CancellationRating
7.9
7,977 reviews
Search Delta flights
JetBluePriceFrom $197Free CancellationRating
7.2
2,920 reviews
Search JetBlue flights
SouthwestPriceFrom $205Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
United AirlinesPriceFrom $228Free CancellationRating
7.4
8,944 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $232Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $245Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

  • Alaska Airlines Flights From San Francisco to Boston

    Alaska Airlines operates around 7 flights from San Francisco to Boston every week. The average price of these flights found in the last 72 hours has been $415, but momondo users have found Alaska Airlines deals from San Francisco to Boston from as low as $232 round-trip. Alaska Airlines has been scored 8.0/10 in 10,000 reviews.

  • Delta Flights From San Francisco to Boston

    Across 7,977 Delta reviews on momondo, the average score is 7.9/10. Delta flies from San Francisco to Boston about 6 times each week, with ticket deals ranging from $170 to $373. 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
Narragansett
Nashua
South Yarmouth
Gloucester
Brockton
Laconia
Concord
Falmouth
Everett
Wells
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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