Flights from Boston (BOS) to San Francisco (SFO) on Alaska Airlines

Lowest fares from Boston to San Francisco

Oct 2026
From$189*
Seen: 10 hours ago
Flight Type One Way|Saver
Nov 2026
From$164*
Seen: 10 hours ago
Flight Type One Way|Saver
Dec 2026
From$159*
Seen: 10 hours ago
Flight Type One Way|Saver
cmp-daily-histogram-bars-legend-min-price-aria-label $182
cmp-daily-histogram-bars-legend-max-price-aria-label $520
Displaying fares for October-2026
  • BOS–SFO, Oct 10, 2026: From $385
    10

    Sa

    OCT

  • BOS–SFO, Oct 11, 2026: From $465
    11

    Su

  • BOS–SFO, Oct 12, 2026: From $520
    12

    Mo

  • BOS–SFO, Oct 13, 2026: From $359
    13

    Tu

  • BOS–SFO, Oct 14, 2026: From $359
    14

    We

  • BOS–SFO, Oct 15, 2026: From $359
    15

    Th

  • BOS–SFO, Oct 16, 2026: From $385
    16

    Fr

  • BOS–SFO, Oct 17, 2026: From $309
    17

    Sa

  • BOS–SFO, Oct 18, 2026: From $494
    18

    Su

  • BOS–SFO, Oct 19, 2026: From $454
    19

    Mo

  • BOS–SFO, Oct 20, 2026: From $309
    20

    Tu

  • BOS–SFO, Oct 21, 2026: From $309
    21

    We

  • BOS–SFO, Oct 22, 2026: From $309
    22

    Th

  • BOS–SFO, Oct 23, 2026: From $219
    23

    Fr

  • BOS–SFO, Oct 24, 2026: From $189
    24

    Sa

  • BOS–SFO, Oct 25, 2026: From $489
    25

    Su

  • BOS–SFO, Oct 26, 2026: From $443
    26

    Mo

  • BOS–SFO, Oct 27, 2026: From $189
    27

    Tu

  • BOS–SFO, Oct 28, 2026: From $209
    28

    We

  • BOS–SFO, Oct 29, 2026: From $219
    29

    Th

  • BOS–SFO, Oct 30, 2026: From $200
    30

    Fr

  • BOS–SFO, Oct 31, 2026: From $200
    31

    Sa

  • BOS–SFO, Nov 1, 2026: From $336
    01

    Su

    NOV

  • BOS–SFO, Nov 2, 2026: From $263
    02

    Mo

  • BOS–SFO, Nov 3, 2026: From $187
    03

    Tu

  • BOS–SFO, Nov 4, 2026: From $182
    04

    We

  • BOS–SFO, Nov 5, 2026: From $187
    05

    Th

  • BOS–SFO, Nov 6, 2026: From $187
    06

    Fr

  • BOS–SFO, Nov 7, 2026: From $200
    07

    Sa

  • BOS–SFO, Nov 8, 2026: From $357
    08

    Su

  • BOS–SFO, Nov 9, 2026: From $182
    09

    Mo

    • Range$182-$520

    *Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

    One-way low-fare flights Boston to San Francisco.*

    $
    keyboard_arrow_down
    One-way low-fare flights Boston to San Francisco.*
    From
    To
    Fare Type
    Dates
    Price
    Boston (BOS)San Francisco (SFO)One-way
    |
    Saver    		Depart: Dec 10, 2026

    From

    $159

    Seen: 10 hours ago

    Boston (BOS)San Francisco (SFO)One-way
    |
    Saver    		Depart: Dec 4, 2026

    From

    $159

    Seen: 10 hours ago

    Boston (BOS)San Francisco (SFO)One-way
    |
    Saver    		Depart: Dec 9, 2026

    From

    $159

    Seen: 10 hours ago

    Boston (BOS)San Francisco (SFO)One-way
    |
    Saver    		Depart: Dec 8, 2026

    From

    $159

    Seen: 10 hours ago

    Boston (BOS)San Francisco (SFO)One-way
    |
    Saver    		Depart: Dec 5, 2026

    From

    $159

    Seen: 10 hours ago

    Boston (BOS)San Francisco (SFO)One-way
    |
    Saver    		Depart: Dec 15, 2026

    From

    $159

    Seen: 10 hours ago

    Boston (BOS)San Francisco (SFO)One-way
    |
    Saver    		Depart: Nov 11, 2026

    From

    $164

    Seen: 10 hours ago

    Boston (BOS)San Francisco (SFO)One-way
    |
    Saver    		Depart: Nov 10, 2026

    From

    $164

    Seen: 10 hours ago

    *Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

    Frequently Asked Questions on flights from Boston (BOS) to San Francisco (SFO)

    When is the best time to book a flight from Boston to San Francisco?

    Want to find the lowest fares by day and time flying from Boston to San Francisco on Alaska Airlines or Hawaiian Airlines? Check out our flight search widget.

    Can I earn points on my flight to San Francisco?

    Yes, with Atmosâ„¢ Rewards you can earn points on flights to 1000+ destinations worldwide through the growing network of Alaska and Hawaiian Airlines. Not an Atmosâ„¢ Rewards member yet? Learn more and join today.

    Can I rent a car when I arrive at San Francisco International Airport?

    Yes, you can rent a car at San Francisco International Airport. Check availability and book now

    Where can I find the status of my flight to San Francisco?

    You can check the status of your upcoming Alaska Airlines flight on our flight schedule page.

    Where can I find answers to questions about flying with Alaska Airlines?

    Visit the Alaska Airlines Help Center to quickly browse our help pages by category to find the information you need.

    Can I change or cancel my Alaska Airlines flight to San Francisco?

    Yes, you can review, modify, or cancel a reservation from our Manage Your Reservation tool. You can learn more about our policy for changing or cancelling a reservation here. 

    Looking for more? See other routes