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Cheap flights from Boston to San Francisco from $156

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 25/3. 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 Boston to San Francisco

Cheap return flights

These are some of the best return flight deals from Boston to San Francisco that have been recently found on momondo from popular airlines, departing in the coming months.
06:00 - 21:30BOS-SFO
18h 30m1 stop
22:30 - 00:47SFO-BOS
23h 17m1 stop
$208Frontier
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Tue, 1 Apr - Tue, 15 Apr
15:35 - 19:24BOS-SFO
6h 49mdirect
23:20 - 07:50SFO-BOS
5h 30mdirect
$300JetBlue
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Tue, 4 Mar - Tue, 4 Mar
19:59 - 23:57BOS-SFO
6h 58mdirect
07:44 - 16:27SFO-BOS
5h 43mdirect
$310Alaska Airlines
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Thu, 20 Mar - Wed, 26 Mar
11:00 - 14:55BOS-SFO
6h 55mdirect
21:25 - 06:13SFO-BOS
5h 48mdirect
$321United Airlines
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Thu, 27 Mar - Mon, 31 Mar
06:00 - 09:55BOS-SFO
6h 55mdirect
23:20 - 07:50SFO-BOS
5h 30mdirect
$325JetBlue
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Fri, 7 Mar - Tue, 18 Mar
16:41 - 22:51BOS-SFO
9h 10m1 stop
21:25 - 06:13SFO-BOS
5h 48mdirect
$335United Airlines
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Thu, 27 Mar - Mon, 31 Mar
07:00 - 13:47BOS-SFO
9h 47m1 stop
07:00 - 18:59SFO-BOS
8h 59m1 stop
$340Alaska Airlines
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Tue, 11 Mar - Wed, 12 Mar
13:50 - 17:45BOS-SFO
6h 55mdirect
21:30 - 08:43SFO-BOS
8h 13m1 stop
$343United Airlines
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Thu, 20 Mar - Tue, 25 Mar
07:50 - 11:50BOS-SFO
7h 00mdirect
07:05 - 15:40SFO-BOS
5h 35mdirect
$349Delta
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Tue, 25 Mar - Wed, 23 Apr
07:50 - 11:50BOS-SFO
7h 00mdirect
13:00 - 21:33SFO-BOS
5h 33mdirect
$373Delta
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Thu, 20 Mar - Wed, 26 Mar

JetBlue flights from Boston to San Francisco

Our best JetBlue deals on Boston to San Francisco flight tickets
JetBlue
4 Mar
BOS15:35Boston Logan Intl
6h 49m
SFO19:24San Francisco
4 Mar
SFO23:20San Francisco
5h 30m
BOS07:50Boston Logan Intl
JetBlue
7 Mar
BOS06:00Boston Logan Intl
6h 55m
SFO09:55San Francisco
18 Mar
SFO23:20San Francisco
5h 30m
BOS07:50Boston Logan Intl
JetBlue
6 Mar
BOS06:00Boston Logan Intl
6h 55m
SFO09:55San Francisco
18 Mar
SFO06:00San Francisco
11h 00m
1 stop
BOS20:00Boston Logan Intl

Alaska Airlines flights from Boston to San Francisco

Our best Alaska Airlines deals on Boston to San Francisco flight tickets
Alaska Airlines
20 Mar
BOS19:59Boston Logan Intl
6h 58m
SFO23:57San Francisco
26 Mar
SFO07:44San Francisco
5h 43m
BOS16:27Boston Logan Intl
Alaska Airlines
11 Mar
BOS07:00Boston Logan Intl
9h 47m
1 stop
SFO13:47San Francisco
12 Mar
SFO07:00San Francisco
8h 59m
1 stop
BOS18:59Boston Logan Intl
Alaska Airlines
10 Mar
BOS16:23Boston Logan Intl
10h 22m
1 stop
SFO23:45San Francisco
12 Mar
SFO06:00San Francisco
9h 59m
1 stop
BOS18:59Boston 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 during the month of September, then book flights to San Francisco from Boston during January instead. Flights to San Francisco in January, while not as cheap as those in September, still average around $520.

What is the cheapest day to depart on your flight to San Francisco?

According to our data, Monday is the cheapest day to fly to San Francisco from Boston. The lowest ticket price found for a Monday departure recently was $0. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Boston to San Francisco for around $3,125.

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

According to our data, the cheapest time of day to fly to San Francisco is in the evening. momondo users have found flights departing from Boston to San Francisco in the evening for as low as $0. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $2,349 on average. Flights to San Francisco from Boston in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 $569 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 $498 on momondo.

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

There are 3 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 February 2025, prices for Boston to San Francisco flights are approximately 17% more expensive 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 return 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

$156

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 $156. The best return flight deal from Boston to San Francisco found on momondo in the last 72 hours is $208.
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?

    San Francisco is 4329.4 km away from Boston Logan Intl. A reasonable flight in good conditions will take 6h 28m.

  • 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 refresh daily.

  • 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 stopovers. 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 licence 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?


Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Walnut Creek
Carmel-by-the-Sea
Watsonville
Emeryville
San Mateo
Mountain View
Pacifica
Sausalito
Santa Cruz
Salinas
Pebble Beach
Union City
Fremont
San Lorenzo
Brentwood

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Boston to San Francisco . Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Boston to San Francisco with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Boston to San Francisco flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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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