Cheap Flights from Boston to San Francisco Starting at $269
Helping travelers to find the best flight offers
Cheapest flights from Boston to San Francisco
Fly from Boston to San Francisco with confidence — our search scans over 700 airlines, 50+ travel agencies, and more than 5 leading booking systems to surface the best fares, schedules, and flexible conditions for your trip. Compare fast nonstops and smart connections in seconds and lock in the option that fits your budget and timetable.
Remember that on average the ideal time to book flights is 2 months before departure!
We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from Boston to San Francisco
Airlines operating on route
Direct Flights from Boston to San Francisco
Fly direct from Boston to San Francisco for the quickest, most convenient way to cross the country—less hassle, no layovers, and more time to enjoy the Bay Area. While connecting flights can sometimes be cheaper, a nonstop saves hours and often delivers a more comfortable, stress-free travel experience—book now to make the most of your trip.
Schedule of direct flights from Boston to San Francisco
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Boston to San Francisco:
Boston airports overview
San Francisco airports overview
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
$269
Alaska Airlines
1 transfer
10h 35m
10/12/2025
The cheapest one-way flight from Boston to San Francisco departs on 10/12/2025, is operated by Alaska Airlines and costs $269
Cheapest round trip flight
$272
Alaska Airlines
Direct flight
12h 21m
10/25/2025
The cheapest roundtrip flight from Boston to San Francisco departs on 10/25/2025, is operated by Alaska Airlines and costs $272
The fastest flight
7 hours
Fastest flight from Boston to San Francisco takes 7 hours
Direct flights
Once a week
There are direct flights on this route 1 day a week: Sa
Earliest flight
6:00 AM
Latest flight
9:19 PM
Average flight duration
6h 46m
Direct flights count
129
Distance
4333km
Timezone difference
3h
The distance between Boston and San Francisco is 4333km (2686 miles). The average flight duration is 6h 46m. There are 129 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 9:19 PM
October 2025
Lowest price
on average:
$242
Avg Price
The route Boston — San Francisco is served by several airlines: Alaska Airlines, JetBlue Airways, and United 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 $269 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.
How much is the cheapest flight ticket from Boston to San Francisco?
The cheapest flight ticket from Boston to San Francisco according to data for the last 48 hours costs $269
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: October.
How long does it take to fly from Boston to San Francisco?
The fastest flights from Boston to San Francisco start from 7 hours 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: Alaska Airlines, JetBlue Airways, United Airlines
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.
