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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.

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 01/06/2021

    Fares From
    $89*
  2. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 01/07/2021

    Fares From
    $89*
  3. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 01/08/2021

    Fares From
    $89*
  4. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 01/09/2021

    Fares From
    $89*
  5. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 01/10/2021

    Fares From
    $89*
  6. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 01/11/2021

    Fares From
    $89*
  7. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 01/12/2021

    Fares From
    $89*
  8. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 01/20/2021

    Fares From
    $89*
  9. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 01/21/2021

    Fares From
    $89*
  10. Seattle (SEA) to Boston (BOS)

    One Way

    Departing 01/23/2021

    Fares From
    $89*

Weather in Boston

Wednesday ,sky is clear
70°F 09/23/2020
Thursday ,overcast clouds
72°F 09/24/2020
Friday ,sky is clear
74°F 09/25/2020
Saturday ,light rain
74°F 09/26/2020
Sunday ,overcast clouds
72°F 09/27/2020
Monday ,light rain
73°F 09/28/2020
Tuesday ,sky is clear
69°F 09/29/2020
Powered by: OpenWeatherMap.org