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Cheap flights from Boston to San Francisco from £70

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 18/1. 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.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Boston to San Francisco.

Cheap last-minute flights

Planning a quick getaway from Boston to San Francisco? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to San Francisco, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from Boston to San Francisco

Find recent round-trip train or bus tickets from Boston to San Francisco.

All round-trip flight deals to San Francisco

The cheapest plane tickets to San Francisco found on KAYAK recently.
11:00 - 14:51BOS-SFO
6h 51mdirect
23:10 - 07:53SFO-BOS
5h 43mdirect
£140United Airlines
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Thu, 9 Jan - Sun, 12 Jan
07:40 - 11:49BOS-SFO
7h 09mdirect
07:30 - 16:10SFO-BOS
5h 40mdirect
£155Delta
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Tue, 7 Jan - Thu, 9 Jan
18:00 - 21:50BOS-SFO
6h 50mdirect
13:00 - 21:43SFO-BOS
5h 43mdirect
£159United Airlines
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Mon, 3 Feb - Thu, 6 Feb
13:50 - 19:49BOS-SFO
8h 59m1 stop
23:10 - 07:53SFO-BOS
5h 43mdirect
£167United Airlines
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Thu, 9 Jan - Sun, 12 Jan
06:00 - 09:55BOS-SFO
6h 55mdirect
11:05 - 19:43SFO-BOS
5h 38mdirect
£179JetBlue
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Fri, 24 Jan - Thu, 30 Jan
21:32 - 01:18BOS-SFO
6h 46mdirect
06:00 - 14:35SFO-BOS
5h 35mdirect
£180JetBlue
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Wed, 12 Feb - Sun, 16 Feb
16:30 - 23:38BOS-SFO
10h 08m1 stop
07:40 - 16:55SFO-BOS
30h 15m1 stop
£184Alaska Airlines
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Mon, 13 Jan - Tue, 21 Jan
19:59 - 23:57BOS-SFO
6h 58mdirect
09:20 - 23:59SFO-BOS
11h 39m1 stop
£192Alaska Airlines
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Wed, 19 Mar - Mon, 24 Mar
08:10 - 22:35BOS-SFO
17h 25m2 stops
07:15 - 23:55SFO-BOS
13h 40m1 stop
£230Southwest
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Wed, 8 Jan - Sun, 12 Jan
08:10 - 22:35BOS-SFO
17h 25m2 stops
12:10 - 10:10SFO-BOS
19h 00m3 stops
£244Southwest
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Wed, 8 Jan - Sun, 12 Jan
18:00 - 21:50BOS-SFO
6h 50mdirect
£70United Airlines
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Sat, 18 Jan
17:50 - 21:56BOS-SFO
7h 06mdirect
£78Delta
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Thu, 16 Jan
07:00 - 10:52BOS-SFO
6h 52mdirect
£91Alaska Airlines
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Sun, 25 May
05:01 - 12:07BOS-SFO
10h 06m1 stop
£98JetBlue
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Wed, 19 Feb
07:00 - 13:47BOS-SFO
9h 47m1 stop
£102Alaska Airlines
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Thu, 13 Mar
06:15 - 09:39BOS-SFO
6h 24mdirect
£105JetBlue
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Mon, 12 May
07:00 - 19:40BOS-SFO
15h 40m1 stop
£118Southwest
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Sun, 2 Feb
06:00 - 22:50BOS-SFO
19h 50m2 stops
£125Southwest
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Sun, 2 Feb
11:39 - 08:30BOS-SFO
23h 51m1 stop
£152Sun Country Air
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Sun, 1 Jun
11:34 - 17:26BOS-SFO
8h 52m1 stop
£160Sun Country Air
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Mon, 16 Jun
17:55 - 21:56BOS-SFO
7h 01mdirect
07:30 - 16:10SFO-BOS
5h 40mdirect
£299Delta
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Mon, 23 Dec - Sat, 1 Feb
08:37 - 14:39BOS-SFO
9h 02m1 stop
23:05 - 07:38SFO-BOS
5h 33mdirect
£306JetBlue
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Thu, 19 Dec - Mon, 13 Jan
05:35 - 11:14BOS-SFO
8h 39m1 stop
07:30 - 16:10SFO-BOS
5h 40mdirect
£315Delta
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Mon, 23 Dec - Sun, 2 Feb
16:05 - 22:34BOS-SFO
9h 29m1 stop
19:40 - 16:55SFO-BOS
18h 15m1 stop
£323Alaska Airlines
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Thu, 19 Dec - Mon, 6 Jan
16:05 - 22:34BOS-SFO
9h 29m1 stop
07:00 - 15:44SFO-BOS
5h 44mdirect
£366Alaska Airlines
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Thu, 19 Dec - Mon, 30 Dec
06:00 - 12:12BOS-SFO
9h 12m1 stop
18:35 - 05:57SFO-BOS
8h 22m1 stop
£431United Airlines
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Mon, 23 Dec - Wed, 1 Jan
10:50 - 18:45BOS-SFO
10h 55m2 stops
07:55 - 22:25SFO-BOS
11h 30m2 stops
£432Southwest
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Sun, 22 Dec - Wed, 25 Dec
06:00 - 12:12BOS-SFO
9h 12m1 stop
07:15 - 19:35SFO-BOS
9h 20m1 stop
£451United Airlines
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Mon, 23 Dec - Wed, 25 Dec
06:55 - 16:25BOS-SFO
12h 30m1 stop
05:40 - 17:55SFO-BOS
9h 15m2 stops
£456Southwest
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Mon, 23 Dec - Sat, 28 Dec
06:45 - 22:51BOS-SFO
19h 06m1 stop
11:18 - 10:51SFO-BOS
20h 33m1 stop
£564Sun Country Air
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Fri, 20 Dec - Thu, 2 Jan
13:30 - 17:21BOS-SFO
6h 51mdirect
23:10 - 07:53SFO-BOS
5h 43mdirect
£140United Airlines
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Thu, 9 Jan - Sun, 12 Jan
07:40 - 11:49BOS-SFO
7h 09mdirect
07:30 - 16:10SFO-BOS
5h 40mdirect
£155Delta
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Tue, 7 Jan - Thu, 9 Jan
18:00 - 21:50BOS-SFO
6h 50mdirect
13:00 - 21:43SFO-BOS
5h 43mdirect
£159United Airlines
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Mon, 3 Feb - Thu, 6 Feb
07:50 - 11:59BOS-SFO
7h 09mdirect
07:30 - 16:10SFO-BOS
5h 40mdirect
£168Delta
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Wed, 12 Feb - Mon, 17 Feb
07:50 - 11:59BOS-SFO
7h 09mdirect
07:30 - 16:10SFO-BOS
5h 40mdirect
£177Delta
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Mon, 3 Feb - Thu, 6 Feb
07:50 - 11:59BOS-SFO
7h 09mdirect
07:30 - 16:10SFO-BOS
5h 40mdirect
£179Delta
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Fri, 24 Jan - Sat, 1 Feb
21:32 - 01:18BOS-SFO
6h 46mdirect
23:20 - 07:50SFO-BOS
5h 30mdirect
£180JetBlue
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Wed, 12 Feb - Wed, 26 Feb
20:05 - 23:39BOS-SFO
6h 34mdirect
15:50 - 00:25SFO-BOS
5h 35mdirect
£181JetBlue
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Wed, 30 Apr - Tue, 6 May
19:59 - 23:57BOS-SFO
6h 58mdirect
07:44 - 16:27SFO-BOS
5h 43mdirect
£318Alaska Airlines
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Tue, 25 Mar - Sat, 29 Mar
18:20 - 22:12BOS-SFO
6h 52mdirect
08:25 - 17:06SFO-BOS
5h 41mdirect
£340Alaska Airlines
Find Deal
Fri, 30 May - Sun, 1 Jun

Delta flights from Boston to San Francisco

Our best Delta deals on Boston to San Francisco flight tickets
Delta
7 Jan
BOS07:40Boston Logan Intl
7h 09m
SFO11:49San Francisco
9 Jan
SFO07:30San Francisco
5h 40m
BOS16:10Boston Logan Intl
Delta
12 Feb
BOS07:50Boston Logan Intl
7h 09m
SFO11:59San Francisco
17 Feb
SFO07:30San Francisco
5h 40m
BOS16:10Boston Logan Intl
Delta
8 Jan
BOS07:40Boston Logan Intl
7h 09m
SFO11:49San Francisco
12 Jan
SFO07:30San Francisco
5h 40m
BOS16:10Boston Logan Intl

JetBlue flights from Boston to San Francisco

Our best JetBlue deals on Boston to San Francisco flight tickets
JetBlue
24 Jan
BOS06:00Boston Logan Intl
6h 55m
SFO09:55San Francisco
30 Jan
SFO11:05San Francisco
5h 38m
BOS19:43Boston Logan Intl
JetBlue
12 Feb
BOS21:32Boston Logan Intl
6h 46m
SFO01:18San Francisco
16 Feb
SFO06:00San Francisco
5h 35m
BOS14:35Boston Logan Intl
JetBlue
30 Apr
BOS08:00Boston Logan Intl
6h 34m
SFO11:34San Francisco
6 May
SFO08:05San Francisco
5h 46m
BOS16:51Boston 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?

The month of February is, on average, the cheapest month to fly to San Francisco from Boston, with most prices found around £238. If you are unable to visit San Francisco during the month of February, then departing from Boston during the month September is also very affordable. Most momondo users find prices during this month for around £241.

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

The cheapest day to depart on your flight to San Francisco is on a Monday when prices can be found for as low as £0. This is often the case because there is less demand to fly during this day of the week. Flights from Boston to San Francisco on a Wednesday will generally be more expensive and average around £393. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our most recent data shows that the best time of day to fly to San Francisco is in the evening. Flights from Boston to San Francisco during this time can be as low as £0. Try not to purchase tickets in the morning because they tend to be around £379. Of course, these prices can vary depending on the time of year and what airport you fly to.

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?

In general, most travellers find the cheapest time to book a flight to San Francisco is about 56 days prior to their departure date, when tickets on average are £282. Keep in mind that you might also find cheap flights to San Francisco outside of this time window. In fact, momondo users recently found flights from Boston to San Francisco for £162.

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.

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

You could potentially save up to 38% on your flight if you consider stops on a Boston to San Francisco flight.

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

As of December 2024, prices for Boston to San Francisco flights are approximately 6% 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

£70

Fastest flight time

6h 24m

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 £70. The best return flight deal from Boston to San Francisco found on momondo in the last 72 hours is £140.
The fastest flight from Boston to San Francisco takes 6h 24m
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 distance between Boston Logan Intl and San Francisco is about 2690.2 mi. 6h 24m is a normal flight duration for this route.

  • 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 a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to San Francisco Airport.

  • What documentation or ID do you need to fly to San Francisco Airport?

    The required travel and health documents for your San Francisco Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Francisco Airport. We recommend that you seek guidance from your airline or a reliable 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
Alaska AirlinesPriceFrom £174Free CancellationRating
8.0
9,551 reviews
Search Alaska Airlines flights
  • Alaska Airlines Flights From Boston to San Francisco

    Alaska Airlines flight deals from Boston to San Francisco start from £221 round-trip. Over the 4 Alaska Airlines flights for this route in a normal week, average airfare is usually £424 round-trip - but some users have found much cheaper deals with momondo.


Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Francisco from Boston.

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

Yes. momondo allows you to filter the results for Boston to San Francisco flights to just show those with 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 simply researching potential flights to San Francisco, momondo offers a useful price alert feature which will track prices for flights to San Francisco from Boston and alert you when they change.


An easier way to manage your San Francisco trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

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