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Cheap flights from San Francisco to Boston from $127

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 2/23. 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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0 bags

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Find the cheapest flights from San Francisco to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
10:55 pm - 1:13 am
SFO
-
BOS
23h 18m
1 stop
Frontier Logo
6:00 am - 9:39 pm
BOS
-
SFO
18h 39m
1 stop
$206Frontier
Tue, Feb 17 - Tue, Feb 24
United Airlines Logo
1:00 pm - 9:42 pm
SFO
-
BOS
5h 42mnonstop
United Airlines Logo
7:55 am - 11:48 am
BOS
-
SFO
6h 53mnonstop
$207United Airlines
Fri, Feb 6 - Sun, Feb 8
Frontier Logo
10:38 pm - 11:41 am
SFO
-
BOS
10h 03m
1 stop
Frontier Logo
5:45 am - 7:14 pm
BOS
-
SFO
16h 29m
1 stop
$210Frontier
Wed, Mar 25 - Wed, Apr 1
Delta Logo
7:10 am - 3:51 pm
SFO
-
BOS
5h 41mnonstop
Delta Logo
7:45 am - 11:47 am
BOS
-
SFO
7h 02mnonstop
$212Delta
Thu, Feb 5 - Wed, Feb 25
JetBlue Logo
8:40 pm - 5:11 am
SFO
-
BOS
5h 31mnonstop
JetBlue Logo
8:33 pm - 12:25 am
BOS
-
SFO
6h 52mnonstop
$214JetBlue
Sat, Feb 14 - Fri, Feb 20
Delta Logo
7:10 am - 3:49 pm
SFO
-
BOS
5h 39mnonstop
Delta Logo
7:45 am - 11:47 am
BOS
-
SFO
7h 02mnonstop
$217Delta
Thu, Feb 12 - Wed, Feb 18
JetBlue Logo
3:25 pm - 11:58 pm
SFO
-
BOS
5h 33mnonstop
JetBlue Logo
8:33 pm - 12:25 am
BOS
-
SFO
6h 52mnonstop
$218JetBlue
Sun, Feb 15 - Thu, Feb 19
Frontier Logo
10:55 pm - 1:13 am
SFO
-
BOS
23h 18m
1 stop
Frontier Logo
12:35 pm - 12:28 am
BOS
-
SFO
14h 53m
2 stops
$219Frontier
Tue, Feb 17 - Sat, Feb 28
Multiple Airlines Logo
10:55 pm - 4:45 pm
SFO
-
BOS
14h 50m
2 stops
Multiple Airlines Logo
6:00 am - 9:39 pm
BOS
-
SFO
18h 39m
1 stop
$220Multiple Airlines
Tue, Feb 17 - Tue, Feb 24
JetBlue Logo
8:30 pm - 5:01 am
SFO
-
BOS
5h 31mnonstop
JetBlue Logo
7:11 am - 11:10 am
BOS
-
SFO
6h 59mnonstop
$222JetBlue
Sat, Feb 7 - Sun, Feb 8

Frontier flights from San Francisco to Boston

Our best Frontier deals on San Francisco to Boston flight tickets
Frontier
Feb 17
SFO10:55 pmSan Francisco
23h 18m
1 stop
BOS1:13 amBoston Logan Intl
Feb 24
BOS6:00 amBoston Logan Intl
18h 39m
1 stop
SFO9:39 pmSan Francisco
$206
Frontier
Mar 25
SFO10:38 pmSan Francisco
10h 03m
1 stop
BOS11:41 amBoston Logan Intl
Apr 1
BOS5:45 amBoston Logan Intl
16h 29m
1 stop
SFO7:14 pmSan Francisco
$210
Frontier
Feb 17
SFO10:55 pmSan Francisco
23h 18m
1 stop
BOS1:13 amBoston Logan Intl
Feb 28
BOS12:35 pmBoston Logan Intl
14h 53m
2 stops
SFO12:28 amSan Francisco
$219

JetBlue flights from San Francisco to Boston

Our best JetBlue deals on San Francisco to Boston flight tickets
JetBlue
Feb 14
SFO8:40 pmSan Francisco
5h 31m
BOS5:11 amBoston Logan Intl
Feb 20
BOS8:33 pmBoston Logan Intl
6h 52m
SFO12:25 amSan Francisco
$214
JetBlue
Feb 15
SFO3:25 pmSan Francisco
5h 33m
BOS11:58 pmBoston Logan Intl
Feb 19
BOS8:33 pmBoston Logan Intl
6h 52m
SFO12:25 amSan Francisco
$218
JetBlue
Feb 7
SFO8:30 pmSan Francisco
5h 31m
BOS5:01 amBoston Logan Intl
Feb 8
BOS7:11 amBoston Logan Intl
6h 59m
SFO11:10 amSan Francisco
$222

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 January 16, 2026.
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 2/17

10:55 pm-1:13 am

1 stop23h 18m

Boston Logan Intl

Tue 2/24

6:00 am-9:39 pm

1 stop18h 39m

$206

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Fri 2/6

1:00 pm-9:42 pm

Nonstop5h 42m

Boston Logan Intl

Sun 2/8

7:55 am-11:48 am

Nonstop6h 53m

$207

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 3/25

10:38 pm-11:41 am

1 stop10h 03m

Boston Logan Intl

Wed 4/1

5:45 am-7:14 pm

1 stop16h 29m

$210

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Thu 2/5

7:10 am-3:51 pm

Nonstop5h 41m

Boston Logan Intl

Wed 2/25

7:45 am-11:47 am

Nonstop7h 02m

$212

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sat 2/14

8:40 pm-5:11 am

Nonstop5h 31m

Boston Logan Intl

Fri 2/20

8:33 pm-12:25 am

Nonstop6h 52m

$214

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Thu 2/12

7:10 am-3:49 pm

Nonstop5h 39m

Boston Logan Intl

Wed 2/18

7:45 am-11:47 am

Nonstop7h 02m

$217

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sun 2/15

3:25 pm-11:58 pm

Nonstop5h 33m

Boston Logan Intl

Thu 2/19

8:33 pm-12:25 am

Nonstop6h 52m

$218

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 2/17

10:55 pm-1:13 am

1 stop23h 18m

Boston Logan Intl

Sat 2/28

12:35 pm-12:28 am

2 stops14h 53m

$219

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 2/17

10:55 pm-4:45 pm

2 stops14h 50m

Boston Logan Intl

Tue 2/24

6:00 am-9:39 pm

1 stop18h 39m

$220

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sat 2/7

8:30 pm-5:01 am

Nonstop5h 31m

Boston Logan Intl

Sun 2/8

7:11 am-11:10 am

Nonstop6h 59m

$222

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 $312. 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 $327.

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 Wednesday when prices can be found for as low as $379. 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 $481.

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 $383. 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 $440 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 $380 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 $341 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?

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

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

As of January 2026, prices for San Francisco to Boston flights are approximately 4% 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

$179

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 $179. 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 in Boston. From San Francisco there are direct flights to 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 31m, 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 $93Free CancellationRating
5.7
3,057 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $129Free CancellationRating
7.8
2,828 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $139Free CancellationRating
7.9
8,057 reviews
Search Delta flights
Sun Country AirPriceFrom $159Free CancellationRating
6.9
342 reviews
Search Sun Country Air flights
JetBluePriceFrom $161Free CancellationRating
7.2
2,889 reviews
Search JetBlue flights
SouthwestPriceFrom $186Free CancellationRating
8.0
4,260 reviews
Search Southwest flights
United AirlinesPriceFrom $204Free CancellationRating
7.4
9,165 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $236Free CancellationRating
8.0
11,726 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $256Free CancellationRating
7.2
11,144 reviews
Search American Airlines flights

  • Delta Flights From San Francisco to Boston

    Delta 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 $366, but momondo users have found Delta deals from San Francisco to Boston from as low as $139 round-trip. Delta has been scored 7.9/10 in 8,057 reviews.

  • Hawaiian Airlines Flights From San Francisco to Boston

    Across 2,828 Hawaiian Airlines reviews on momondo, the average score is 7.8/10. Hawaiian Airlines flies from San Francisco to Boston about 28 times each week, with ticket deals ranging from $129 to $338. 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
South Yarmouth
Cambridge
Narragansett
Gloucester
Falmouth
Nashua
Laconia
Brockton
Sturbridge
Everett
Chatham
Concord

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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