Cheap Flights from Boston (BOS) to San Francisco (SFO) from HK$938~

View HK$938 flight on Sat, 13 Sep 2025Opens in a new window

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

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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$938 for one-way flights and HK$1,866 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 16 Sep - Tue, 23 Sep
BOS
Boston
SFO
San Francisco
HK$1,866 Return, found 3 days ago
HK$1,866
Return
found 3 days ago
Select Delta flight, departing Tue, 16 Sep from Boston to San Francisco, returning Tue, 23 Sep, priced at HK$1,866 found 3 days ago
Delta
Tue, 30 Sep - Mon, 20 Oct
BOS
Boston
SFO
San Francisco
HK$2,038 Return, found 2 days ago
HK$2,038
Return
found 2 days ago
Select Delta flight, departing Tue, 30 Sep from Boston to San Francisco, returning Mon, 20 Oct, priced at HK$2,038 found 2 days ago
Delta
Mon, 6 Oct - Mon, 20 Oct
BOS
Boston
SFO
San Francisco
HK$2,263 Return, found 2 days ago
HK$2,263
Return
found 2 days ago
Select Delta flight, departing Mon, 6 Oct from Boston to San Francisco, returning Mon, 20 Oct, priced at HK$2,263 found 2 days ago
Delta
Sat, 30 Aug - Sat, 6 Sep
BOS
Boston
SFO
San Francisco
HK$2,308 Return, found 2 days ago
HK$2,308
Return
found 2 days ago
Select Delta flight, departing Sat, 30 Aug from Boston to San Francisco, returning Sat, 6 Sep, priced at HK$2,308 found 2 days ago
Delta
Tue, 16 Sep - Tue, 23 Sep
BOS
Boston
SFO
San Francisco
HK$2,340 Return, found 3 days ago
HK$2,340
Return
found 3 days ago
Select Delta flight, departing Tue, 16 Sep from Boston to San Francisco, returning Tue, 23 Sep, priced at HK$2,340 found 3 days ago
Delta
Tue, 30 Sep - Thu, 23 Oct
BOS
Boston
SFO
San Francisco
HK$2,425 Return, found 2 days ago
HK$2,425
Return
found 2 days ago
Select Delta flight, departing Tue, 30 Sep from Boston to San Francisco, returning Thu, 23 Oct, priced at HK$2,425 found 2 days ago
American Airlines
Tue, 16 Sep - Tue, 23 Sep
BOS
Boston
SFO
San Francisco
HK$2,426 Return, found 3 days ago
HK$2,426
Return
found 3 days ago
Select American Airlines flight, departing Tue, 16 Sep from Boston to San Francisco, returning Tue, 23 Sep, priced at HK$2,426 found 3 days ago
Delta
Sat, 30 Aug - Sat, 6 Sep
BOS
Boston
SFO
San Francisco
HK$2,435 Return, found 2 days ago
HK$2,435
Return
found 2 days ago
Select Delta flight, departing Sat, 30 Aug from Boston to San Francisco, returning Sat, 6 Sep, priced at HK$2,435 found 2 days ago
United
Tue, 16 Sep - Tue, 23 Sep
BOS
Boston
SFO
San Francisco
HK$2,618 Return, found 3 days ago
HK$2,618
Return
found 3 days ago
Select United flight, departing Tue, 16 Sep from Boston to San Francisco, returning Tue, 23 Sep, priced at HK$2,618 found 3 days ago
JetBlue Airways
Sun, 21 Sep - Fri, 3 Oct
BOS
Boston
SFO
San Francisco
HK$2,747 Return, found 2 days ago
HK$2,747
Return
found 2 days ago
Select JetBlue Airways flight, departing Sun, 21 Sep from Boston to San Francisco, returning Fri, 3 Oct, priced at HK$2,747 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 HK$1,240 - HK$2,163 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
HK$1,866
Distance
4315 km
Average flight time
3 hours 34 mins

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$938 now!

 

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$1,866. 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.

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