Cheap Flights From Logan Intl. (BOS) To San Francisco Intl. (SFO)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Find The Best Dates To Fly

Cheapest Flights from Boston (BOS) to San Francisco (SFO)

The cheapest flights to San Francisco Intl. found within the past 7 days were CA $332 round trip and CA $163 one way. Prices and availability subject to change. Additional terms may apply.

Sat, Aug. 30 - Sat, Sep. 6
BOS
Boston
SFO
San Francisco
CA $332 Roundtrip, found 15 hours ago
CA $332
Roundtrip
found 15 hours ago
Select JetBlue Airways flight, departing Sat, Aug. 30 from Boston to San Francisco, returning Sat, Sep. 6, priced at CA $332 found 15 hours ago
Sat, Aug. 30 - Sat, Sep. 6
BOS
Boston
SFO
San Francisco
CA $333 Roundtrip, found 15 hours ago
CA $333
Roundtrip
found 15 hours ago
Select JetBlue Airways flight, departing Sat, Aug. 30 from Boston to San Francisco, returning Sat, Sep. 6, priced at CA $333 found 15 hours ago
Sat, Aug. 30 - Sat, Sep. 6
BOS
Boston
SFO
San Francisco
CA $333 Roundtrip, found 15 hours ago
CA $333
Roundtrip
found 15 hours ago
Select Alaska Airlines flight, departing Sat, Aug. 30 from Boston to San Francisco, returning Sat, Sep. 6, priced at CA $333 found 15 hours ago
Fri, Jan. 9 - Wed, Jan. 14
BOS
Boston
SFO
San Francisco
CA $340 Roundtrip, found 3 days ago
CA $340
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Fri, Jan. 9 from Boston to San Francisco, returning Wed, Jan. 14, priced at CA $340 found 3 days ago
Sat, Sep. 6 - Sat, Sep. 13
BOS
Boston
SFO
San Francisco
CA $345 Roundtrip, found 21 hours ago
CA $345
Roundtrip
found 21 hours ago
Select Alaska Airlines flight, departing Sat, Sep. 6 from Boston to San Francisco, returning Sat, Sep. 13, priced at CA $345 found 21 hours ago
Sat, Aug. 30 - Sun, Sep. 7
BOS
Boston
SFO
San Francisco
CA $346 Roundtrip, found 2 days ago
CA $346
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Aug. 30 from Boston to San Francisco, returning Sun, Sep. 7, priced at CA $346 found 2 days ago
Sat, Sep. 6 - Sat, Sep. 13
BOS
Boston
SFO
San Francisco
CA $346 Roundtrip, found 21 hours ago
CA $346
Roundtrip
found 21 hours ago
Select Alaska Airlines flight, departing Sat, Sep. 6 from Boston to San Francisco, returning Sat, Sep. 13, priced at CA $346 found 21 hours ago
Tue, Dec. 16 - Wed, Jan. 14
BOS
Boston
SFO
San Francisco
CA $351 Roundtrip, found 5 days ago
CA $351
Roundtrip
found 5 days ago
Select JetBlue Airways flight, departing Tue, Dec. 16 from Boston to San Francisco, returning Wed, Jan. 14, priced at CA $351 found 5 days ago
Tue, Dec. 16 - Wed, Jan. 14
BOS
Boston
SFO
San Francisco
CA $351 Roundtrip, found 5 days ago
CA $351
Roundtrip
found 5 days ago
Select JetBlue Airways flight, departing Tue, Dec. 16 from Boston to San Francisco, returning Wed, Jan. 14, priced at CA $351 found 5 days ago
Sun, Nov. 9 - Tue, Nov. 11
BOS
Boston
SFO
San Francisco
CA $353 Roundtrip, found 3 days ago
CA $353
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sun, Nov. 9 from Boston to San Francisco, returning Tue, Nov. 11, priced at CA $353 found 3 days ago

Frequently asked questions

Are there direct flights from Logan Intl. Airport (BOS) to San Francisco Intl. Airport (SFO)?
JetBlue and United Airlines are a couple of the airlines that have nonstop flights from BOS to San Francisco Airport. If you're keen to get to where you're headed fast, these are the options for you.
What airlines fly from BOS to San Francisco Intl. Airport (SFO)?
If you're searching for direct flights from Logan Intl. Airport to San Francisco Intl. Airport (SFO), you're not short on options. Here are the most popular airlines that advertise nonstop services on this route:

  • JetBlue - (B6) with 130 flights every month
  • United Airlines - (UA) with 86 flights every month
  • Delta - (DL) with 30 flights every month
  • Alaska Airlines - (AS) with 26 flights every month

What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.