Cheap Flights from Boston to San Juan Island

View €86 flight on Mon, 22 Sep 2025Opens in a new window

Popular airlines from Boston to San Juan Island

  • Aer Lingus

    Aer Lingus

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  • British Airways

    British Airways

  • Turkish Airlines

    Turkish Airlines

  • American Airlines

    American Airlines

  • Air Serbia

    Air Serbia

  • Swiss International Air Lines

    Swiss International Air Lines

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Cheap flights from Boston to San Juan Island (BOS-SEA)

Prices were available within the past 7 days and start at €86 for one-way flights and €171 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Thu, 25 Sep - Wed, 1 Oct
BOS
Boston
SEA
Seattle
€171 Return, found 1 day ago
€171
Return
found 1 day ago
Select JetBlue Airways flight, departing Thu, 25 Sep from Boston to Seattle, returning Wed, 1 Oct, priced at €171 found 1 day ago
Delta
Sat, 13 Sep - Mon, 22 Sep
BOS
Boston
SEA
Seattle
€171 Return, found 2 days ago
€171
Return
found 2 days ago
Select Delta flight, departing Sat, 13 Sep from Boston to Seattle, returning Mon, 22 Sep, priced at €171 found 2 days ago
Delta
Thu, 25 Sep - Wed, 1 Oct
BOS
Boston
SEA
Seattle
€179 Return, found 1 day ago
€179
Return
found 1 day ago
Select Delta flight, departing Thu, 25 Sep from Boston to Seattle, returning Wed, 1 Oct, priced at €179 found 1 day ago
Delta
Fri, 12 Sep - Fri, 19 Sep
BOS
Boston
SEA
Seattle
€204 Return, found 7 hours ago
€204
Return
found 7 hours ago
Select Delta flight, departing Fri, 12 Sep from Boston to Seattle, returning Fri, 19 Sep, priced at €204 found 7 hours ago
American Airlines
Thu, 25 Sep - Wed, 1 Oct
BOS
Boston
SEA
Seattle
€214 Return, found 1 day ago
€214
Return
found 1 day ago
Select American Airlines flight, departing Thu, 25 Sep from Boston to Seattle, returning Wed, 1 Oct, priced at €214 found 1 day ago
United
Mon, 22 Sep - Mon, 29 Sep
BOS
Boston
SEA
Seattle
€239 Return, found 22 hours ago
€239
Return
found 22 hours ago
Select United flight, departing Mon, 22 Sep from Boston to Seattle, returning Mon, 29 Sep, priced at €239 found 22 hours ago
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