Beginning of main content
Trip Type
Flight 1
Flight 2
Flight 3
Flight 4
Flight 5

Search over 321,000 hotels worldwide and 400 airlines worldwide.

Secure incredible value with Expedia's Price Guarantee.

No Expedia cancellation fee to change or cancel almost any hotel reservation.

Cheap Flights from Boston to San Francisco

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Providence

£320.40

Cheap Flights from Boston to San Francisco

Question : Which airline is least likely to get you to SFO on time?
Answer : If you decide to book your flight with Priester Aviation, keep an eye on your departure time. 100% of flights from Logan International Airport (BOS) to San Francisco International Airport (SFO) are delayed.

Question : On a daily basis, how many different flight times are available from Logan International Airport (BOS) to San Francisco International Airport (SFO)?
Answer : It does differ by the day of the week, but on average, you can expect 27 different choices of flight times when you book. You’ll have more choices on this route than most others departing the United States.

Question : What is the cheapest day to fly in the next four weeks?
Answer : Since low prices are preferred, look at Jan 19th. As of Jan 15th, it's showing the cheapest ticket sales at $196. That is 41% below the average price for this route, so you can spend that extra money on an adventure rather than the flight.

Question : Which airline is giving the best deals for round-trip flights from Logan International Airport (BOS) to San Francisco International Airport (SFO)?
Answer : Flight prices are hitting highs of $1,396 over the next three months when flying to SFO from BOS. Check out United Airlines, as they have been booking customers at just $196.

Question : What price range should you expect when booking from Boston (BOS) to San Francisco (SFO)?
Answer : Prices for this trip tend to change more than other flights in the United States. They can range from $196 to $1,396. Prices tend to be lower the further out you book.

Question : When traveling to San Francisco from Boston, how long will you be in the air?
Answer : The average flight duration between BOS and SFO is six hours and 44 minutes.

Question : Which airline has been the most dependable in getting passengers to their destination on time?
Answer : Delta Air Lines leads the way with a 78% on-time rate. Spend as little time in an airport as necessary by flying with Delta Air Lines. If they are late for some reason though, the average delay is less than half an hour.

Boston to San Francisco Flights

When looking for plane tickets from Boston to San Francisco, the ease and convenience of using Expedia simply can’t be beat. With tons of departure points and flights options from the top airline carriers, Expedia gives you the widest array of cheap flights to San Francisco. Look for BOS to SFO airfare with the assurance that you have the largest online travel agency working for you.

Expedia lets you search across the largest number of airlines and San Francisco flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Boston San Francisco flight!

Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Boston to San Francisco trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your San Francisco flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Boston to San Francisco with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!