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Ultra Low Fare Flights from Boston (BOS) to Seattle (SEA) with Spirit

Fly Boston to Seattle and Save Big

*Fares presented below are available at the beginning of each day, but may sell out. Additional baggage fees and fees for other services may apply. Other terms and conditions may apply.

Ultra Low Fare Flights from Boston (BOS) to Seattle (SEA) with Spirit

Boston to Seattle Flight Deals

*Fares presented below are available at the beginning of each day, but may sell out. Additional baggage fees and fees for other services may apply. Other terms and conditions may apply.

  1. Las Vegas (LAS) to Seattle (SEA)

    One Way

    Departing 04/29/2020

    Fares From
    $43*
  2. Dallas (DFW) to Seattle (SEA)

    One Way

    Departing 04/30/2020

    Fares From
    $81*
  3. Phoenix (PHX) to Seattle (SEA)

    One Way

    Departing 03/03/2020

    Fares From
    $38*
  4. Houston (IAH) to Seattle (SEA)

    One Way

    Departing 05/06/2020

    Fares From
    $67*
  5. Detroit (DTW) to Seattle (SEA)

    One Way

    Departing 05/13/2020

    Fares From
    $108*
  6. Los Angeles (LAX) to Seattle (SEA)

    One Way

    Departing 03/03/2020

    Fares From
    $64*
  7. Baltimore (BWI) to Seattle (SEA)

    One Way

    Departing 03/03/2020

    Fares From
    $119*
  8. Chicago (ORD) to Seattle (SEA)

    One Way

    Departing 03/03/2020

    Fares From
    $84*
  9. Atlanta (ATL) to Seattle (SEA)

    One Way

    Departing 03/03/2020

    Fares From
    $94*
  10. Fort Lauderdale (FLL) to Seattle (SEA)

    One Way

    Departing 04/30/2020

    Fares From
    $151*

Weather in Seattle

Thursday ,sky is clear
46°F 11/21/2019
Friday ,sky is clear
41°F 11/22/2019
Saturday ,light rain
47°F 11/23/2019
Sunday ,light rain
49°F 11/24/2019
Monday ,moderate rain
43°F 11/25/2019
Tuesday ,moderate rain
40°F 11/26/2019
Wednesday ,few clouds
37°F 11/27/2019
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