S$152 Cheap Flights from Boston to San Francisco

View S$152 flight on Sat, 20 Sep, 2025Opens in a new window

Popular airlines from Logan International Airport (BOS) to San Francisco Intl. Airport (SFO)

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Cheap Flights from Boston to San Francisco (BOS-SFO)

Prices were available within the past 7 days and start at S$152 for one-way flights and S$318 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 18 Nov - Mon, 24 Nov
BOS
Boston
SFO
San Francisco
S$318 Return, found 1 day ago
S$318
Return
found 1 day ago
Select Delta flight, departing Tue, 18 Nov from Boston to San Francisco, returning Mon, 24 Nov, priced at S$318 found 1 day ago
Delta
Sun, 23 Nov - Tue, 2 Dec
BOS
Boston
SFO
San Francisco
S$332 Return, found 1 day ago
S$332
Return
found 1 day ago
Select Delta flight, departing Sun, 23 Nov from Boston to San Francisco, returning Tue, 2 Dec, priced at S$332 found 1 day ago
Delta
Thu, 14 Aug - Sat, 23 Aug
BOS
Boston
SFO
San Francisco
S$383 Return, found 20 hours ago
S$383
Return
found 20 hours ago
Select Delta flight, departing Thu, 14 Aug from Boston to San Francisco, returning Sat, 23 Aug, priced at S$383 found 20 hours ago
Delta
Thu, 14 Aug - Sat, 23 Aug
BOS
Boston
SFO
San Francisco
S$395 Return, found 20 hours ago
S$395
Return
found 20 hours ago
Select Delta flight, departing Thu, 14 Aug from Boston to San Francisco, returning Sat, 23 Aug, priced at S$395 found 20 hours ago
United
Fri, 21 Nov - Mon, 24 Nov
BOS
Boston
SFO
San Francisco
S$397 Return, found 1 day ago
S$397
Return
found 1 day ago
Select United flight, departing Fri, 21 Nov from Boston to San Francisco, returning Mon, 24 Nov, priced at S$397 found 1 day ago
United
Tue, 29 Jul - Thu, 7 Aug
BOS
Boston
SFO
San Francisco
S$399 Return, found 2 days ago
S$399
Return
found 2 days ago
Select United flight, departing Tue, 29 Jul from Boston to San Francisco, returning Thu, 7 Aug, priced at S$399 found 2 days ago
Delta
Thu, 14 Aug - Sat, 23 Aug
BOS
Boston
SFO
San Francisco
S$409 Return, found 20 hours ago
S$409
Return
found 20 hours ago
Select Delta flight, departing Thu, 14 Aug from Boston to San Francisco, returning Sat, 23 Aug, priced at S$409 found 20 hours ago
United
Tue, 29 Jul - Thu, 7 Aug
BOS
Boston
SFO
San Francisco
S$412 Return, found 2 days ago
S$412
Return
found 2 days ago
Select United flight, departing Tue, 29 Jul from Boston to San Francisco, returning Thu, 7 Aug, priced at S$412 found 2 days ago
Delta
Thu, 27 Nov - Tue, 2 Dec
BOS
Boston
SFO
San Francisco
S$434 Return, found 1 day ago
S$434
Return
found 1 day ago
Select Delta flight, departing Thu, 27 Nov from Boston to San Francisco, returning Tue, 2 Dec, priced at S$434 found 1 day ago
American Airlines
Thu, 7 Aug - Wed, 13 Aug
BOS
Boston
SFO
San Francisco
S$435 Return, found 2 days ago
S$435
Return
found 2 days ago
Select American Airlines flight, departing Thu, 7 Aug from Boston to San Francisco, returning Wed, 13 Aug, priced at S$435 found 2 days ago

Find the cheapest month to fly from Boston (BOS) to San Francisco (SFO)

October is typically the cheapest month to fly

From S$202 - S$366 per traveller.

Graph displaying average flight prices per month

Boston to San Francisco route information
Origin airport
Logan Intl.
Destination airport
San Francisco Intl.
Airlines serving
American Airlines, Delta, United
Return price
S$318
Distance
4315 km
Average flight time
3 hours 36 mins

Flights from Boston to San Francisco

There are several airlines that operate frequent flights from Boston (BOS) to San Francisco (SFO) including

The earliest flight leaves Logan Intl. Airport at 06:00 and arrives at San Francisco Intl. Airport at 00:09. The last flight of the day departs Boston at 21:49 and arrives at San Francisco at 23:54.

The flight distance from Boston to San Francisco is about 4364 km, the shortest flight is 06 hours 10 minutes with .

Expedia lets you search across the largest number of airlines and San Francisco flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Boston San Francisco flight!

Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Boston to San Francisco trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your San Francisco flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Boston to San Francisco with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

Frequently asked questions

How much is a flight from Logan Intl. Airport to San Francisco Intl. Airport (SFO)?
Based on airfares available within the last 7 days on Expedia for flights departing within the next year, round-trip flights between Logan Intl. Airport (BOS) and SFO start from S$318. Book today to score the best price for your next big adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from BOS to San Francisco Intl. Airport (SFO)?
Each air carrier has a different set of terms and conditions. If you decide to cancel your trip, visit our Customer Service Portal.
How do I find cheap flights from Logan Intl. Airport (BOS) to San Francisco Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for BOS to San Francisco Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Logan Intl. Airport (BOS) to San Francisco Intl. Airport (SFO)?
The distance is around 4,300 kilometres, so fill your carry-on bag with all the items you need to make the long journey comfortable. Not sure what to take on board your Boston to San Francisco flight? Earplugs, a sleep mask and a travel pillow are a few essentials.
Which airlines fly direct from BOS to San Francisco Intl. Airport (SFO)?
Whether you're after a one-way or return flight, you'll have your pick of airlines that will take you straight from Logan Intl. Airport to SFO. These are some of the most popular ones:

  • JetBlue Airways - (B6) with 143 monthly flights
  • United Airlines - (UA) with 121 monthly flights
  • Delta Air Lines - (DL) with 56 monthly flights
  • Alaska Airlines - (AS) with 30 monthly flights

Are BOS to SFO flight tickets cheaper when they're purchased at the last minute?
It is possible to pick up an awesome last-minute deal from BOS to SFO, but it's also possible to miss out altogether! As many airlines release prices up to a year in advance, it's worth keeping an eye on fares early and being ready to pounce when you spot a good bargain. Expedia compares air carrier prices and updates flight deals all the time, so you can rest assured you're always seeing the latest offers.

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