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Find cheap one-way flights from Boston to San Francisco starting at US$95.

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

  • One way
  • Round-trip

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

When is the cheapest time to book flights from Boston to San Francisco?

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

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Cheapest airlines flights 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.

Sun Country Airlines
From US$81
Frontier Airlines
From US$100
Spirit Airlines
From US$103
American Airlines
From US$113
Alaska Airlines
From US$117
Southwest Airlines
From US$134
United Airlines
From US$139
Delta Air Lines
From US$236
Jetblue Airways
From US$239
Southern Airways Express
From US$622
ANA airlines

Find more flights and airlines

Find cheap flights from Boston to San Francisco by different airports

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Boston to San Francisco.

  • Cheapest
    Sun Country Airlines
    BOS
    11:30
    15h 28m
    2 transfer
    SFO
    23:58
    General Edward Lawrence Logan International Airport - San Francisco International Airport
    Tue, Apr 23Sun Country Airlines
    US$81
  • Southern Airways Express
    BNH
    15:30
    23h 50m
    1 transfer
    SFO
    12:20
    Hartford Barnes Airport - San Francisco International Airport
    Tue, Apr 16Southern Airways Express
    US$622
  • Southern Airways Express
    BNH
    15:30
    23h 50m
    1 transfer
    SFO
    12:20
    Hartford Barnes Airport - San Francisco International Airport
    Tue, Apr 16Southern Airways Express
    US$622
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from Boston (BOS) to San Francisco (SFO) the cheapest?

    Airlines adjust prices for flights from Boston to San Francisco based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much do flights from Boston (BOS) to San Francisco (SFO) cost?

    According to Trip.com's data, the lowest price is around $424.
  • How long does it take to fly from Boston (BOS) to San Francisco (SFO) and what is the distance?

    It takes around 6 hours 36 minutes to fly from Boston (BOS) to San Francisco (SFO).
  • What is the transportation method from the main airport to downtown in San Francisco?

    • The distance from San Francisco International Airport to downtown is about 17km. It takes about 30 minutes by taxi.
  • What are the most popular airlines that fly from Boston (BOS) to San Francisco (SFO)?

Boston to San Francisco Flight Information

Cheapest nonstop flight price

$95

Cheapest round-trip ticket price

$197

Off-season for travel

November

Peak season for travel

September