Flights from Boston (BOS) to Seattle (SEA) on Alaska Airlines

Lowest fares from Boston to Seattle

Oct 2026
From$179*
Seen: 8 hours ago
Flight Type One Way|Saver
Nov 2026
From$179*
Seen: 8 hours ago
Flight Type One Way|Saver
Dec 2026
From$224*
Seen: 8 hours ago
Flight Type One Way|Saver
cmp-daily-histogram-bars-legend-min-price-aria-label $179
cmp-daily-histogram-bars-legend-max-price-aria-label $484
Displaying fares for October-2026
  • BOS–SEA, Oct 9, 2026: From $484
    09

    Fr

    OCT

  • BOS–SEA, Oct 10, 2026: From $366
    10

    Sa

  • BOS–SEA, Oct 11, 2026: From $446
    11

    Su

  • BOS–SEA, Oct 12, 2026: From $394
    12

    Mo

  • BOS–SEA, Oct 13, 2026: From $384
    13

    Tu

  • BOS–SEA, Oct 14, 2026: From $384
    14

    We

  • BOS–SEA, Oct 15, 2026: From $294
    15

    Th

  • BOS–SEA, Oct 16, 2026: From $269
    16

    Fr

  • BOS–SEA, Oct 17, 2026: From $294
    17

    Sa

  • BOS–SEA, Oct 18, 2026: From $379
    18

    Su

  • BOS–SEA, Oct 19, 2026: From $346
    19

    Mo

  • BOS–SEA, Oct 20, 2026: From $294
    20

    Tu

  • BOS–SEA, Oct 21, 2026: From $249
    21

    We

  • BOS–SEA, Oct 22, 2026: From $274
    22

    Th

  • BOS–SEA, Oct 23, 2026: From $274
    23

    Fr

  • BOS–SEA, Oct 24, 2026: From $274
    24

    Sa

  • BOS–SEA, Oct 25, 2026: From $374
    25

    Su

  • BOS–SEA, Oct 26, 2026: From $314
    26

    Mo

  • BOS–SEA, Oct 27, 2026: From $179
    27

    Tu

  • BOS–SEA, Oct 28, 2026: From $179
    28

    We

  • BOS–SEA, Oct 29, 2026: From $179
    29

    Th

  • BOS–SEA, Oct 30, 2026: From $179
    30

    Fr

  • BOS–SEA, Oct 31, 2026: From $179
    31

    Sa

  • BOS–SEA, Nov 1, 2026: From $259
    01

    Su

    NOV

  • BOS–SEA, Nov 2, 2026: From $259
    02

    Mo

  • BOS–SEA, Nov 3, 2026: From $204
    03

    Tu

  • BOS–SEA, Nov 4, 2026: From $204
    04

    We

  • BOS–SEA, Nov 5, 2026: From $204
    05

    Th

  • BOS–SEA, Nov 6, 2026: From $224
    06

    Fr

  • BOS–SEA, Nov 7, 2026: From $204
    07

    Sa

  • BOS–SEA, Nov 8, 2026: From $259
    08

    Su

    • Range$179-$484

    *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 Seattle.*

    $
    keyboard_arrow_down
    One-way low-fare flights Boston to Seattle.*
    From
    To
    Fare Type
    Dates
    Price
    Boston (BOS)Seattle (SEA)One-way
    |
    Saver    		Depart: Jan 30, 2027

    From

    $168

    Seen: 8 hours ago

    Boston (BOS)Seattle (SEA)One-way
    |
    Saver    		Depart: Feb 6, 2027

    From

    $168

    Seen: 8 hours ago

    Boston (BOS)Seattle (SEA)One-way
    |
    Saver    		Depart: Jan 23, 2027

    From

    $168

    Seen: 8 hours ago

    Boston (BOS)Seattle (SEA)One-way
    |
    Saver    		Depart: Nov 12, 2026

    From

    $179

    Seen: 8 hours ago

    Boston (BOS)Seattle (SEA)One-way
    |
    Saver    		Depart: Oct 28, 2026

    From

    $179

    Seen: 8 hours ago

    Boston (BOS)Seattle (SEA)One-way
    |
    Saver    		Depart: Oct 29, 2026

    From

    $179

    Seen: 8 hours ago

    Boston (BOS)Seattle (SEA)One-way
    |
    Saver    		Depart: Feb 1, 2027

    From

    $179

    Seen: 8 hours ago

    Boston (BOS)Seattle (SEA)One-way
    |
    Saver    		Depart: Feb 3, 2027

    From

    $179

    Seen: 8 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 Seattle (SEA)

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

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

    Can I earn points on my flight to Seattle?

    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 Seattle/Tacoma International Airport?

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

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

    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 Seattle?

    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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