Cheap Flights from Boston (BOS) to San Francisco (SFO) from HK$776~

View HK$776 flight on Tue, 27 Jan 2026Opens in a new window

Popular airlines from Boston to San Francisco, CA (SFO-San Francisco Intl.)

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

Prices were available within the past 7 days and start at HK$776 for one-way flights and HK$1,541 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 20 Jan - Tue, 3 Feb
BOS
Boston
SFO
San Francisco
HK$1,541 Return, found 6 days ago
HK$1,541
Return
found 6 days ago
Select Delta flight, departing Tue, 20 Jan from Boston to San Francisco, returning Tue, 3 Feb, priced at HK$1,541 found 6 days ago
Delta
Tue, 3 Feb - Wed, 18 Feb
BOS
Boston
SFO
San Francisco
HK$1,616 Return, found 6 days ago
HK$1,616
Return
found 6 days ago
Select Delta flight, departing Tue, 3 Feb from Boston to San Francisco, returning Wed, 18 Feb, priced at HK$1,616 found 6 days ago
Delta
Fri, 16 Jan - Tue, 3 Feb
BOS
Boston
SFO
San Francisco
HK$1,692 Return, found 6 days ago
HK$1,692
Return
found 6 days ago
Select Delta flight, departing Fri, 16 Jan from Boston to San Francisco, returning Tue, 3 Feb, priced at HK$1,692 found 6 days ago
Delta
Thu, 29 Jan - Wed, 18 Feb
BOS
Boston
SFO
San Francisco
HK$1,778 Return, found 6 days ago
HK$1,778
Return
found 6 days ago
Select Delta flight, departing Thu, 29 Jan from Boston to San Francisco, returning Wed, 18 Feb, priced at HK$1,778 found 6 days ago
Delta
Tue, 3 Feb - Tue, 17 Feb
BOS
Boston
SFO
San Francisco
HK$1,831 Return, found 6 days ago
HK$1,831
Return
found 6 days ago
Select Delta flight, departing Tue, 3 Feb from Boston to San Francisco, returning Tue, 17 Feb, priced at HK$1,831 found 6 days ago
Alaska Airlines
Mon, 26 Jan - Tue, 10 Feb
BOS
Boston
SFO
San Francisco
HK$1,844 Return, found 6 days ago
HK$1,844
Return
found 6 days ago
Select Alaska Airlines flight, departing Mon, 26 Jan from Boston to San Francisco, returning Tue, 10 Feb, priced at HK$1,844 found 6 days ago
Delta
Sun, 1 Feb - Sun, 8 Feb
BOS
Boston
SFO
San Francisco
HK$1,853 Return, found 4 days ago
HK$1,853
Return
found 4 days ago
Select Delta flight, departing Sun, 1 Feb from Boston to San Francisco, returning Sun, 8 Feb, priced at HK$1,853 found 4 days ago
Delta
Thu, 19 Feb - Mon, 9 Mar
BOS
Boston
SFO
San Francisco
HK$1,917 Return, found 6 days ago
HK$1,917
Return
found 6 days ago
Select Delta flight, departing Thu, 19 Feb from Boston to San Francisco, returning Mon, 9 Mar, priced at HK$1,917 found 6 days ago
American Airlines
Thu, 12 Feb - Sun, 15 Feb
BOS
Boston
SFO
San Francisco
HK$2,206 Return, found 4 days ago
HK$2,206
Return
found 4 days ago
Select American Airlines flight, departing Thu, 12 Feb from Boston to San Francisco, returning Sun, 15 Feb, priced at HK$2,206 found 4 days ago
United
Tue, 20 Jan - Sun, 25 Jan
BOS
Boston
SFO
San Francisco
HK$2,229 Return, found 6 days ago
HK$2,229
Return
found 6 days ago
Select United flight, departing Tue, 20 Jan from Boston to San Francisco, returning Sun, 25 Jan, priced at HK$2,229 found 6 days ago

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

May is typically the cheapest month to fly

From HK$1,246 - HK$2,306 per traveller.

Alternative airports near San Francisco

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Francisco Intl. SFO. Cheapest and Closest option available. Average driving time to city centre is 19 minutes. Flights from HK$2,165
SFO
San Francisco Intl.
CheapestClosest
Average driving time to city centre19 min
Flights from HK$2,165

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 HK$1,541. 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 kilometers, 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.

Travel information

Origin airport
Logan Intl.
Destination airport
San Francisco Intl.
Return price
HK$1,541
Distance
4315 km
Average flight time
3 hours 51 mins

Book with confidence

Flights from Boston to San Francisco

Book cheap flights from Boston (BOS) to San Francisco (SFO) on Expedia.com.hk. Find the best flight deals to destinations around the world for your next leisure or business travel on Expedia.com.hk.

Search for flights from Boston (BOS) to San Francisco (SFO) to find great flight deals suitable to your travel date and time. Expedia.com.hk flight booking search engine is simple to use and looking for cheap flights is as easy as a click of a mouse or on your mobile devices.

Be 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 (BOS) to San Francisco (SFO) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

Save more when combine your San Francisco flight with a hotel for a package deal! Discover additional savings by booking in advance. Now you can find activities in San Francisco and things to do in San Francisco for your perfect vacation with Expedia Thing to Do.

If you would like to book flights to San Francisco more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to San Francisco is HK$776 now!

 

Flights from Boston to San Francisco

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