Save $100 on flights to Boston from Seattle and Portland (or vice versa). Fares are now available for $247 roundtrip, including tax, on United or Sun Country Airlines. Fare Calendars:

Flights to Boston (roundtrip, including tax) from:

Flights from Boston (roundtrip, including tax) to:

Note: Sun Country charges $20 (in advance) and $25 (at the airport) for the first checked bag. United Airlines charges $25 for the first checked bag. Check our baggage fee chart for more information.


  • $100 OFF regular pricing

Travel Dates:

  • Select dates October 6 – December 9

Sample Screenshots:

Seattle to Boston: Results

Seattle to Boston: Results

Seattle to Boston: CheapOair Booking Page

Seattle to Boston: CheapOair Booking Page Updates

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Featured Image: Boston Public Garden (

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