FFL Helper

FFL Helper / Boston / Seattle

BOS → SEA

Boston (BOS) to Seattle (SEA)

Compare one-way fares for flights from Boston to Seattle.

Lowest fare $142
Distance 2,486 mi
Flight time 6h 26m
Airports BOS–SEA
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By month: October 2026 from $250 · November 2026 from $142 · December 2026 from $230

Price calendar

October 2026

From $250

Mon
Tue
Wed
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Sat
Sun
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27 $250
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November 2026

From $142 · up to $231

Mon
Tue
Wed
Thu
Fri
Sat
Sun
1
2 $172 3 $157 4 $157 5 $142 6 $187 7 $187 8 $231
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11
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Upcoming dates

Seattle SEA

$142

Nov 05, 7:13am · 6h 26m · 0 stops

BOS → SEA · Alaska Airlines

Tickets

Seattle SEA

$172

Nov 02, 7:13am · 6h 26m · 0 stops

BOS → SEA · Alaska Airlines

Tickets

Seattle SEA

$230

Dec 13, 4:42pm · 9h 27m · 1 stop

BOS → SEA · American Airlines

Tickets

About this route

This calendar shows dated one-way fares from Boston to Seattle. Use it to see which days are cheaper before you search tickets.

Flight time and airport codes on this page are for the sample itinerary we have on file. Always confirm the live routing when you book Boston to Seattle.