Compare airlines, prices, and flight durations for your trip
Cheapest flights from Boston to San Francisco
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.
Remember that on average the ideal time to book flights is 2 months before departure!
The minimum one-way ticket price from Boston to San Francisco is $119 (September 2026), while the maximum is $137 (November 2026). On average, a ticket costs $127–$263.
Airlines operating on route
Non-stop flights from Boston to San Francisco
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.
Schedule of direct flights from Boston to San Francisco
The only airline operating direct flights from Boston to San Francisco is JetBlue Airways. Flights operate every day.
Boston airports overview
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San Francisco airports overview
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Frequently asked questions (FAQ)
Answers to questions about the route that travelers are most interested in.
Special offers and sales on air tickets from Boston to San Francisco
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.
Alternative routes
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Cheapest one way flight
$127
Frontier Airlines
1 layover
9h 18m
08/27/2026
The cheapest one-way flight from Boston to San Francisco departs on 08/27/2026, is operated by Frontier Airlines and costs $127
Cheapest round trip flight
$241
Frontier Airlines
1 layover
20h 5m
09/04/2026
The cheapest roundtrip flight from Boston to San Francisco departs on 09/04/2026, is operated by Frontier Airlines and costs $241
The fastest flight
6h 35m
Fastest flight from Boston to San Francisco takes 6h 35m
Direct flights
Several times a week
There are direct flights on this route 3 days a week: We, Th, and Fr
Earliest flight
6:00 AM
Latest flight
8:55 PM
Average flight duration
6h 30m
Direct flights count
116
Distance
4333km
Timezone difference
3h
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
September 2026
Lowest price
on average:
$119
November 2026
Highest price
on average:
$137
Avg Price
Price dynamics
On the Boston — San Francisco route, ticket prices are stable. Whichever month you choose, the difference will be minimal.
Cheaper and more expensive periods
There is a slight difference: it's a bit cheaper in August 2026–September 2026 (averaging $123) and slightly more in September 2026–November 2026 ($128). But overall, the difference is small.
Best time to buy
On this route, you don't need to target specific months — prices are stable. The difference between the cheapest and most expensive period is only 4%. Book whenever it's convenient.
Price predictability
Monthly price variation is just 5.7%. Ticket costs on this route are among the most predictable.
The route Boston — San Francisco is served by several airlines: United Airlines, JetBlue Airways, and Frontier Airlines. This gives passengers more freedom in choosing flights. You can consider not only the price but also schedules, baggage policies, and onboard service. Our service compares all offers so you can find tickets from $127 and choose the most convenient option. Thanks to airline competition, you may also find promotional fares or special offers, helping you save even more. Plan your trip in advance and choose the best flights without overpaying.
Boston Logan International (BOS) is the city’s primary international gateway and a full-service hub for several legacy carriers, with frequent transatlantic, transcontinental and regional flights. It’s located on Boston Harbor about 3–5 miles (5–8 km) from downtown, with travel times typically 15–30 minutes by car depending on traffic. Public options include the MBTA Blue Line + free Massport shuttle (roughly 20–30 minutes, low fares) and Logan Express buses from suburbs (30–60 minutes, moderate fares). Taxis and app rides can be convenient but subject to peak surcharges. Pros: broad route network and strong ground-transport links; cons: can be busy and may have higher parking and concession prices compared with smaller airports.
What is the cheapest price for flights from Boston to San Francisco?
The cheapest flight ticket from Boston to San Francisco according to data for the last 48 hours costs $127
When is the best time to buy air tickets on the route Boston — San Francisco?
Often the best time to buy tickets from Boston to San Francisco is 2 months before departure.
When is the cheapest time of year to fly from Boston to San Francisco?
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, August, November.
How long does it take to fly from Boston to San Francisco?
The fastest flights from Boston to San Francisco start from 6 hours 35 minutes in the air.
Which airline can fly direct from Boston to San Francisco?
The following airlines operate direct flights on the route Boston — San Francisco: United Airlines, JetBlue Airways
San Francisco International (SFO) acts as the region’s primary international and transcontinental hub, handling most long-haul, premium and full-service carriers alongside some low-cost operators. Located about 13 miles south of downtown San Francisco, it’s typically reached in 20–35 minutes by BART or 25–45 minutes by taxi/rideshare depending on traffic; BART fares are usually in the mid single-digit range while taxis and shared rides can be noticeably higher. The airport offers extensive lounges and amenities and is generally convenient for connecting flights, though peak-hour traffic and terminal size can add transit time. For short-haul and budget options, Oakland (OAK) and San Jose (SJC) can be cheaper or more convenient alternatives for certain routes.
