$159 Cheap American Airlines flights Boston (BOS) to Seattle (SEA)

View $159 flight on Tue, Aug 18, 2026Opens in a new window

$159 Cheap American Airlines flights Boston (BOS) to Seattle (SEA)

Prices were available within the past 7 days and start at $159 for one-way flights and $385 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, May 19 - Wed, May 27
BOS
Boston
SEA
Seattle
$385 Roundtrip, found 2 days ago
$385
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, May 19 from Boston to Seattle, returning Wed, May 27, priced at $385 found 2 days ago

Find the cheapest month to fly from Boston (BOS) to Seattle (SEA)

March is typically the cheapest month to fly

From $156 - $307 per traveler.

Travel information

Origin airport
Logan Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, Southwest Airlines, United
Popular airline
Delta
Distance
3980 km
Average flight time
4 hours 51 mins

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