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

Fly Seattle to Boston 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.

  1. SEA-BOS

    Seattle to Boston

    Departing 04/09/2019

    Fares From
    $94*

    One Way

  2. SEA-BOS

    Seattle to Boston

    Departing 04/10/2019

    Fares From
    $94*

    One Way

  3. SEA-BOS

    Seattle to Boston

    Departing 04/16/2019

    Fares From
    $94*

    One Way

  4. SEA-BOS

    Seattle to Boston

    Departing 04/30/2019

    Fares From
    $94*

    One Way

  5. SEA-BOS

    Seattle to Boston

    Departing 05/07/2019

    Fares From
    $94*

    One Way

  6. SEA-BOS

    Seattle to Boston

    Departing 05/08/2019

    Fares From
    $94*

    One Way

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

Seattle to Boston 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. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 07/31/2019

    Fares From
    $168*
  2. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 07/10/2019

    Fares From
    $206*
  3. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 07/16/2019

    Fares From
    $206*
  4. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 08/13/2019

    Fares From
    $206*
  5. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 08/14/2019

    Fares From
    $206*
  6. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 08/21/2019

    Fares From
    $206*
  7. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 08/27/2019

    Fares From
    $206*
  8. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 08/28/2019

    Fares From
    $206*
  9. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 06/26/2019

    Fares From
    $213*
  10. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 07/17/2019

    Fares From
    $213*

Weather in Boston

Tuesday ,sky is clear
-1°C 03/19/2019
Wednesday ,sky is clear
4°C 03/20/2019
Thursday ,light rain
5°C 03/21/2019
Friday ,light rain
8°C 03/22/2019
Saturday ,light snow
-5°C 03/23/2019
Sunday ,sky is clear
-1°C 03/24/2019
Monday ,light snow
4°C 03/25/2019
Powered by: OpenWeatherMap.org