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

Search over 1,000,000 properties worldwide and 550 airlines worldwide

Search over a million flights, hotels, packages, and more

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.

Boston to San Francisco route information

Origin Airport Logan Intl.
Destination Airport San Francisco Intl.
Airlines Serving Alaska Airlines, American Airlines, Delta, Frontier Airlines, United
Flight Price £188
Distance 4,315 km

Providence

£259.54

Provincetown

£838.60

Cheap BOS to SFO Flights

  • Question : Which airline has the least delays from Boston to San Francisco?
    Answer : Booking with United Airlines means you will arrive to San Francisco about the time you were supposed to. In fact, this airline has a 74% on-time average. It never hurts to be prepared. If you should choose this airline, be sure to track the flight status to stay on top of the departure time.
  • Question : How long does it take to fly from Boston to San Francisco?
    Answer : The average flight from BOS and SFO takes around six hours and 44 minutes. Remember, there is a three-hour time change.
  • Question : How much is a plane ticket to San Francisco (SFO) from Boston (BOS)?
    Answer : They can vary from £188 to £757. Don't forget, the sooner you book, the better price you tend to get.
  • Question : What is the cheapest day to fly?
    Answer : The cheapest day to fly from Boston to San Francisco is on Wednesday. So, if you are trying to save a little money on your next getaway look for flights on that day.
  • Question : Is there a day that has more departure times to choose from than other days?
    Answer : With 29 total flight time options, Sunday provides the most flexibility from BOS to SFO. However, with 23 flight times, Saturday doesn't offer quite as many options when finding that perfect departure time.
  • Question : Can I change the date of my flight?
    Answer : You sure can and you may save yourself some money by changing it. The lowest-cost day to fly in July is Wednesday. Flexibility is key when booking travel to help keep costs down.
  • Question : How many flights are there per day from Boston to San Francisco?
    Answer : Depending on the day of the week, the number of flight times will change, but on average there are 27. Compared to the average route departing the United States with nine flight times, you'll have more options than most.

San Francisco Flights

When looking for plane tickets 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, Boston gives you the widest array of cheap flights to San Francisco. Look for San Francisco airfare with the assurance that you have one of the world's leading full-service online travel brands 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 San Francisco flight!

Browse through dozens of options at great prices! 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 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 to San Francisco from Boston. Use us as your stop travel destination and have the confidence that you’re getting a bargain!