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Flights from Boston to San Francisco

Airlines Flying from Boston to San Francisco

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.
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Flight deals from Boston to San Francisco

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • Round-trip
  • One way

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Flight Information from Boston to San Francisco

Cheapest one-way flight price AU$153
Cheapest return ticket price AU$301
Off-season travel month April
Peak season for travel June
Flight distance 4,342.96km
Average flight time 6 hours 43 minutes
Popular airline Alaska Airlines

Find the best time to fly from Boston to San Francisco

We monitor flight fares to help you find the best deals effortlessly

Cheapest flights
From price
Search
  • 11 18
  • 18 25

  • Jun

    25 1
  • 1 8
  • 8 15
  • 15 22
  • 22 29

  • Jul

    29 6
  • 6 13
  • 13 20
  • 20 27

  • Aug

    27 3
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

FAQ

How to find a cheap flight from Boston to San Francisco

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Boston to San Francisco. Book your flights at the right time and save more.
1
Be flexible with your travel dates to get the cheapest flight from Boston to San Francisco.
Simply tap "Date" on the flight search bar to browse through the calendar and check out airfare from Boston to San Francisco over the next 6 months in 2025. If you're planning to fly within the next three months, it looks like the most affordable option is on Thu, May 29, with one-way flights priced at just AU$154.
2
Compare cheap flight deals from Boston to San Francisco across hundreds of airlines.
With our extensive search, you can compare prices from over 500 airlines to find the cheapest flight tickets from Boston to San Francisco. The cheapest airline for this route is Hawaiian Airlines.
3
Set up a Price Alert
By setting up a Price Alert for your journey from Boston to San Francisco, you can easily keep an eye on ticket prices without having to check every day.
4
Don't miss out on cheap flight deals and promo codes from Boston to San Francisco.
You can always find the latest offers through Trip.com Deals and Promo Codes for cheap flights. By signing up for a free membership, you'll get access to even more deals for your flights.
5
Book early or wait until the last minute.
It's usually best to book early. Flight tickets are often cheapest when they're first released, typically about a year before the departure date. So, have a look online as soon as the flights you're interested in become available. If you miss the cheapest time, you might still find some good deals as the departure date gets closer.
6
Search for flights on the go.
For the best travel flight booking experience, download the Trip.com app. You can search for cheap flights from Boston to San Francisco and snag some exclusive deals just for you.

More Travel Options

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