$144 Cheap American Airlines flights Seattle (SEA) to Boston (BOS)

View $144 flight on Wed, Sep 2, 2026Opens in a new window

$144 Cheap American Airlines flights Seattle (SEA) to Boston (BOS)

Prices were available within the past 7 days and start at $144 for one-way flights and $362 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Aug 29 - Mon, Aug 31
SEA
Seattle
BOS
Boston
$362 Roundtrip, found 14 hours ago
$362
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Sat, Aug 29 from Seattle to Boston, returning Mon, Aug 31, priced at $362 found 14 hours ago
American Airlines
Sat, Aug 29 - Mon, Aug 31
SEA
Seattle
BOS
Boston
$387 Roundtrip, found 14 hours ago
$387
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Sat, Aug 29 from Seattle to Boston, returning Mon, Aug 31, priced at $387 found 14 hours ago

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

May is typically the cheapest month to fly

From $197 - $334 per traveler.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Logan Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United
Popular airline
United
Distance
3980 km
Average flight time
8 hours 23 mins

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