$174 Cheap American Airlines flights Boston (BOS) to Seattle (SEA)

View $174 flight on Tue, Oct 13, 2026Opens in a new window

$174 Cheap American Airlines flights Boston (BOS) to Seattle (SEA)

Prices were available within the past 7 days and start at $174 for one-way flights and $349 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Jan 26 - Thu, Jan 29
BOS
Boston
SEA
Seattle
$349 Roundtrip, found 3 days ago
$349
Roundtrip
found 3 days ago
Select American Airlines flight, departing Mon, Jan 26 from Boston to Seattle, returning Thu, Jan 29, priced at $349 found 3 days ago
American Airlines
Mon, Jan 26 - Tue, Jan 27
BOS
Boston
SEA
Seattle
$351 Roundtrip, found 3 days ago
$351
Roundtrip
found 3 days ago
Select American Airlines flight, departing Mon, Jan 26 from Boston to Seattle, returning Tue, Jan 27, priced at $351 found 3 days ago

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

March is typically the cheapest month to fly

From $157 - $307 per traveler.

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $352
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $352
Flights from Boston (BOS) to Seattle (SEA)
Origin airport
Logan Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines
Popular airline
Delta
Distance
3980 km
Average flight time
4 hours 54 mins