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

Lowest fares from San Francisco to Boston

Nov 2026
From$213*
Seen: 18 hours ago
Flight Type One Way|Saver
Dec 2026
From$152*
Seen: 18 hours ago
Flight Type One Way|Saver
Jan 2027
From$144*
Seen: 18 hours ago
Flight Type One Way|Saver
cmp-daily-histogram-bars-legend-min-price-aria-label $152
cmp-daily-histogram-bars-legend-max-price-aria-label $742
Displaying fares for November-2026
  • SFO–BOS, Nov 11, 2026: From $324
    11

    We

    NOV

  • SFO–BOS, Nov 12, 2026: From $324
    12

    Th

  • SFO–BOS, Nov 13, 2026: From $324
    13

    Fr

  • SFO–BOS, Nov 14, 2026: From $324
    14

    Sa

  • SFO–BOS, Nov 15, 2026: From $324
    15

    Su

  • SFO–BOS, Nov 16, 2026: From $274
    16

    Mo

  • SFO–BOS, Nov 17, 2026: From $274
    17

    Tu

  • SFO–BOS, Nov 18, 2026: From $274
    18

    We

  • SFO–BOS, Nov 19, 2026: From $279
    19

    Th

  • SFO–BOS, Nov 20, 2026: From $464
    20

    Fr

  • SFO–BOS, Nov 21, 2026: From $349
    21

    Sa

  • SFO–BOS, Nov 22, 2026: From $304
    22

    Su

  • SFO–BOS, Nov 23, 2026: From $213
    23

    Mo

  • SFO–BOS, Nov 24, 2026: From $593
    24

    Tu

  • SFO–BOS, Nov 25, 2026: From $284
    25

    We

  • SFO–BOS, Nov 26, 2026: From $420
    26

    Th

  • SFO–BOS, Nov 27, 2026: From $389
    27

    Fr

  • SFO–BOS, Nov 28, 2026: From $742
    28

    Sa

  • SFO–BOS, Nov 29, 2026: From $742
    29

    Su

  • SFO–BOS, Nov 30, 2026: From $585
    30

    Mo

  • SFO–BOS, Dec 1, 2026: From $229
    01

    Tu

    DEC

  • SFO–BOS, Dec 2, 2026: From $154
    02

    We

  • SFO–BOS, Dec 3, 2026: From $154
    03

    Th

  • SFO–BOS, Dec 4, 2026: From $154
    04

    Fr

  • SFO–BOS, Dec 5, 2026: From $152
    05

    Sa

  • SFO–BOS, Dec 6, 2026: From $154
    06

    Su

  • SFO–BOS, Dec 7, 2026: From $154
    07

    Mo

  • SFO–BOS, Dec 8, 2026: From $152
    08

    Tu

  • SFO–BOS, Dec 9, 2026: From $152
    09

    We

  • SFO–BOS, Dec 10, 2026: From $154
    10

    Th

    • Range$152-$742

    *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 San Francisco to Boston.*

    $
    keyboard_arrow_down
    One-way low-fare flights San Francisco to Boston.*
    From
    To
    Fare Type
    Dates
    Price
    San Francisco (SFO)Boston (BOS)One-way
    |
    Saver    		Depart: Jan 13, 2027

    From

    $144

    Seen: 18 hours ago

    San Francisco (SFO)Boston (BOS)One-way
    |
    Saver    		Depart: Jan 20, 2027

    From

    $144

    Seen: 18 hours ago

    San Francisco (SFO)Boston (BOS)One-way
    |
    Saver    		Depart: Jan 22, 2027

    From

    $144

    Seen: 18 hours ago

    San Francisco (SFO)Boston (BOS)One-way
    |
    Saver    		Depart: Jan 25, 2027

    From

    $144

    Seen: 18 hours ago

    San Francisco (SFO)Boston (BOS)One-way
    |
    Saver    		Depart: Jan 26, 2027

    From

    $144

    Seen: 18 hours ago

    San Francisco (SFO)Boston (BOS)One-way
    |
    Saver    		Depart: Feb 2, 2027

    From

    $144

    Seen: 18 hours ago

    San Francisco (SFO)Boston (BOS)One-way
    |
    Saver    		Depart: Feb 3, 2027

    From

    $144

    Seen: 18 hours ago

    San Francisco (SFO)Boston (BOS)One-way
    |
    Saver    		Depart: Feb 6, 2027

    From

    $144

    Seen: 18 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 San Francisco (SFO) to Boston (BOS)

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

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

    Can I earn points on my flight to Boston?

    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 Logan International Airport?

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

    Where can I find the status of my flight to Boston?

    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 Boston?

    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. 

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