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Cheap flights from Boston to San Francisco from $95

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 5/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Boston to San Francisco

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Boston to San Francisco.
Frontier Logo
10:45 am - 9:27 pmBOS-SFO
13h 42m1 stop
Frontier Logo
10:19 pm - 10:20 amSFO-BOS
9h 01m1 stop
$178Frontier
Find Deal
Wed, May 28 - Tue, Jun 3
Frontier Logo
8:00 am - 1:15 pmBOS-SFO
32h 15m1 stop
Frontier Logo
9:59 pm - 1:05 amSFO-BOS
24h 06m1 stop
$180Frontier
Find Deal
Wed, May 14 - Sat, May 17
JetBlue Logo
8:22 pm - 12:08 amBOS-SFO
6h 46mnonstop
JetBlue Logo
1:55 pm - 10:42 pmSFO-BOS
5h 47mnonstop
$237JetBlue
Find Deal
Tue, May 13 - Tue, May 20
Alaska Airlines Logo
7:00 am - 10:49 amBOS-SFO
6h 49mnonstop
Alaska Airlines Logo
6:00 am - 5:52 pmSFO-BOS
8h 52m1 stop
$247Alaska Airlines
Find Deal
Sat, May 24 - Wed, May 28
JetBlue Logo
7:10 am - 10:39 amBOS-SFO
6h 29mnonstop
JetBlue Logo
8:00 am - 4:49 pmSFO-BOS
5h 49mnonstop
$248JetBlue
Find Deal
Thu, May 15 - Wed, May 21
Alaska Airlines Logo
6:00 am - 12:39 pmBOS-SFO
9h 39m1 stop
Alaska Airlines Logo
7:24 am - 7:40 amSFO-BOS
21h 16m1 stop
$256Alaska Airlines
Find Deal
Sat, May 24 - Sat, May 31
United Airlines Logo
8:00 am - 11:44 amBOS-SFO
6h 44mnonstop
United Airlines Logo
8:25 am - 5:05 pmSFO-BOS
5h 40mnonstop
$275United Airlines
Find Deal
Wed, May 21 - Sun, May 25
United Airlines Logo
11:00 am - 2:44 pmBOS-SFO
6h 44mnonstop
United Airlines Logo
11:12 am - 10:00 pmSFO-BOS
7h 48m1 stop
$282United Airlines
Find Deal
Wed, May 7 - Wed, May 14
Delta Logo
8:00 pm - 11:59 pmBOS-SFO
6h 59mnonstop
Delta Logo
1:00 pm - 9:49 pmSFO-BOS
5h 49mnonstop
$283Delta
Find Deal
Mon, Sep 1 - Sat, Sep 13
Delta Logo
7:05 am - 10:54 amBOS-SFO
6h 49mnonstop
Delta Logo
7:00 am - 3:57 pmSFO-BOS
5h 57mnonstop
$318Delta
Find Deal
Sat, Jul 19 - Wed, Jul 23

Frontier flights from Boston to San Francisco

Our best Frontier deals on Boston to San Francisco flight tickets
Frontier
May 28
BOS10:45 amBoston Logan Intl
13h 42m
1 stop
SFO9:27 pmSan Francisco
Jun 3
SFO10:19 pmSan Francisco
9h 01m
1 stop
BOS10:20 amBoston Logan Intl
Frontier
May 14
BOS8:00 amBoston Logan Intl
32h 15m
1 stop
SFO1:15 pmSan Francisco
May 17
SFO9:59 pmSan Francisco
24h 06m
1 stop
BOS1:05 amBoston Logan Intl
Frontier
May 6
BOS8:00 amBoston Logan Intl
32h 15m
1 stop
SFO1:15 pmSan Francisco
May 13
SFO9:59 pmSan Francisco
23h 45m
1 stop
BOS12:44 amBoston Logan Intl

JetBlue flights from Boston to San Francisco

Our best JetBlue deals on Boston to San Francisco flight tickets
JetBlue
May 13
BOS8:22 pmBoston Logan Intl
6h 46m
SFO12:08 amSan Francisco
May 20
SFO1:55 pmSan Francisco
5h 47m
BOS10:42 pmBoston Logan Intl
JetBlue
May 24
BOS5:30 pmBoston Logan Intl
9h 10m
1 stop
SFO11:40 pmSan Francisco
May 31
SFO6:00 amSan Francisco
5h 45m
BOS2:45 pmBoston Logan Intl
JetBlue
May 14
BOS3:10 pmBoston Logan Intl
11h 40m
1 stop
SFO11:50 pmSan Francisco
May 21
SFO8:00 amSan Francisco
5h 49m
BOS4:49 pmBoston Logan Intl

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 September, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $330.

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 $375. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $536.

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 $321. Flights at noon are often more expensive with an average ticket price of $559.

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 23 weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $361 when searching 23 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 $325 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.

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

As of April 2025, prices for Boston to San Francisco flights are approximately 12% cheaper 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

$95

Fastest flight time

6h 28m

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 $95. The best round-trip flight deal from Boston to San Francisco found on momondo in the last 72 hours is $178.
The fastest flight from Boston to San Francisco takes 6h 28m
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 29m.

  • 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
5.9
3,283 reviews
Search Frontier flights
American AirlinesPriceFrom $132Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Hawaiian AirlinesPriceFrom $135Free CancellationRating
7.9
2,393 reviews
Search Hawaiian Airlines flights
Sun Country AirPriceFrom $150Free CancellationRating
6.9
349 reviews
Search Sun Country Air flights
DeltaPriceFrom $161Free CancellationRating
8.0
7,920 reviews
Search Delta flights
JetBluePriceFrom $194Free CancellationRating
7.3
2,924 reviews
Search JetBlue flights
Alaska AirlinesPriceFrom $200Free CancellationRating
8.0
9,911 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $227Free CancellationRating
7.4
8,683 reviews
Search United Airlines flights
SouthwestPriceFrom $288Free CancellationRating
8.0
4,287 reviews
Search Southwest flights
  • Delta Flights From Boston to San Francisco

    The lowest priced Delta flight from Boston to San Francisco from the last 72 hours was $161. Generally, Delta has 7 flights on this route every week with an average price of $364. Delta is rated 8.0/10 by our users.

  • Alaska Airlines Flights From Boston to San Francisco

    The best Alaska Airlines deal for Boston to San Francisco flight tickets found on momondo in the last 72 hours was $200, round-trip. It should be noted that an average Alaska Airlines flight deal for this route in this time was higher, at $388 round-trip. Alaska Airlines operates 3 flights out of Boston into San Francisco in an average week, so prices vary by time and availability. 9,911 Alaska Airlines reviews by users on momondo have scored the airline at 8.0/10.


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
Hayward
Modesto
Calistoga
Sonoma
Roseville
Bodega Bay
Daly City
Santa Clara
Fremont
South San Francisco
Big Sur
Sunnyvale
Redwood City
Berkeley
Walnut Creek
Vallejo
Palo Alto
Fairfield

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.


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1 adult
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Mon 4/28
Mon 5/5

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