starting at $162
starting at $140
starting at $197
starting at $202
Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Boston to San Francisco. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
The minimum one-way ticket price from Boston to San Francisco is $97 (December 2026), while the maximum is $271 (June 2027). On average, a ticket costs $147–$153.
A non-stop flight is the most convenient and comfortable way to fly from Boston to San Francisco, despite the fact that sometimes flights with transfers can cost significantly less.
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Answers to questions about the route that travelers are most interested in.
We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
Flight costs from Boston to San Francisco climb toward the middle of the period, then start to drop. By choosing the right dates, you can save noticeably.
Prices rise from February 2027 to June 2027 (+172%), then decline from November 2026 to February 2027 (32%). The cheapest tickets are in December 2026–February 2027 (averaging $98), while the priciest are in February 2027–June 2027 ($185).
For savings, plan your flight for December 2026–February 2027 — you could save up to 47%. Try to avoid February 2027–June 2027 when possible: prices are at their highest then.
Price spread on this route is 46.1%. Costs depend heavily on the season, so flexibility in choosing your departure month is especially valuable here.
The Boston — San Francisco route is served by a wide range of airlines: 4 in total, including JetBlue Airways, Alaska Airlines, Frontier Airlines, and Southwest Airlines. Competition among carriers gives passengers the opportunity to find tickets at attractive fares — with prices starting from $140. Our service helps compare all available offers within seconds and choose the most convenient option. You can filter flights by price, departure time, or baggage rules to make your trip as comfortable as possible. With so many airlines, there’s always a chance to catch special promotions and save.
starting at $162
starting at $140
starting at $197
starting at $202
Boston — San Francisco
11/13/2026
Departure
Direct flight
B6333
starting at $278
Boston — San Francisco
11/15/2026
Departure
Direct flight
B6333
starting at $287
Boston — San Francisco
11/17/2026
Departure
Direct flight
B6633
starting at $291
Boston — San Francisco
06/19/2027
Departure
Direct flight
B6333
starting at $260
Boston — San Francisco
11/10/2026
Departure
Direct flight
B6733
starting at $328
Boston — San Francisco
12/15/2026
Departure
Direct flight
B6733
starting at $162
Boston — San Francisco
11/11/2026
Departure
Direct flight
B6333
starting at $298
Boston — San Francisco
11/20/2026
Departure
Direct flight
B61633
starting at $201
Boston — San Francisco
11/14/2026
Departure
Direct flight
B6733
starting at $304
Boston — San Francisco
11/19/2026
Departure
Direct flight
B6733
starting at $307
There are most likely no direct flights on the Boston — San Francisco route
The cheapest flight ticket from Boston to San Francisco according to data for the last 48 hours costs $140
Often the best time to buy tickets from Boston to San Francisco is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Boston to San Francisco can be found flying in these months: December, February, November.
The fastest flights from Boston to San Francisco start from 6 hours 30 minutes in the air.
The following airlines operate direct flights on the route Boston — San Francisco: JetBlue Airways
All airports
The cheapest one-way flight from Boston to San Francisco departs on 12/15/2026, is operated by Alaska Airlines and costs $140
The cheapest roundtrip flight from Boston to San Francisco departs on 12/15/2026, is operated by Southwest Airlines and costs $239
Fastest flight from Boston to San Francisco takes 6h 30m
There are direct flights on this route 6 days a week: Su, Tu, We, Th, Fr, and Sa
The distance between Boston and San Francisco is 4333km (2686 miles). The average flight duration is 6h 45m. There are 87 direct flights from Boston to San Francisco. The time difference between Boston and San Francisco is 3h. Flights from Boston begin at 6:00 AM. The latest flight from Boston departs at 8:59 PM
We couldn't find any special offers for flights from Boston to San Francisco