JetBlue Airways
Every day
starting at $258
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.
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.
All airports
JetBlue Airways
Every day
starting at $258
The only airline operating direct flights from Boston to San Francisco is JetBlue Airways. Flights operate every day.
Boston — San Francisco
10/01/2026
Departure
Direct flight
B6733
starting at $305
Boston — San Francisco
09/26/2026
Departure
Direct flight
UA2400
starting at $803
Boston — San Francisco
09/27/2026
Departure
Direct flight
B6733
starting at $785
Boston — San Francisco
09/28/2026
Departure
Direct flight
B6633
starting at $565
Boston — San Francisco
09/29/2026
Departure
Direct flight
UA2400
starting at $403
Boston — San Francisco
11/10/2026
Departure
Direct flight
UA574
starting at $282
Boston — San Francisco
01/06/2027
Departure
Direct flight
UA1367
starting at $236
Boston — San Francisco
06/19/2027
Departure
Direct flight
UA1367
starting at $435
Boston — San Francisco
10/01/2026
Departure
Direct flight
B6413
starting at $450
starting at $305
starting at $236
starting at $113
starting at $174
The Boston — San Francisco route is served by a wide range of airlines: 4 in total, including JetBlue Airways, United Airlines, Alaska Airlines, and Southwest Airlines. Competition among carriers gives passengers the opportunity to find tickets at attractive fares — with prices starting from $113. 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.
The minimum one-way ticket price from Boston to San Francisco is $144 (September 2026), while the maximum is $200 (February 2027). On average, a ticket costs $172–$182.
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 September 2026 to October 2026 (+26%), then decline from October 2026 to November 2026 (12%). The cheapest tickets are in September 2026–October 2026 (averaging $163), while the priciest are in November 2026–February 2027 ($180).
For savings, plan your flight for September 2026–October 2026 — you could save up to 10%. Try to avoid November 2026–February 2027 when possible: prices are at their highest then.
Price spread on this route is 12.2%. Costs depend heavily on the season, so flexibility in choosing your departure month is especially valuable here.
The cheapest flight ticket from Boston to San Francisco according to data for the last 48 hours costs $113
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: September, November, October.
The fastest flights from Boston to San Francisco start from 6 hours 40 minutes in the air.
The following airlines operate direct flights on the route Boston — San Francisco: JetBlue Airways, United Airlines
The cheapest one-way flight from Boston to San Francisco departs on 11/10/2026, is operated by Alaska Airlines and costs $113
The cheapest roundtrip flight from Boston to San Francisco departs on 01/28/2027, is operated by Southwest Airlines and costs $225
Fastest flight from Boston to San Francisco takes 6h 40m
There are direct flights on this route 6 days a week: Su, Mo, Tu, We, Th, and Sa
The distance between Boston and San Francisco is 4333km (2686 miles). The average flight duration is 6h 30m. There are 116 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 8:55 PM
We couldn't find any special offers for flights from Boston to San Francisco