Boston to Seattle Flights (BOS-SEA) from $121

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Selected fares from Boston to Seattle

The cheapest prices found with in the last 7 days for return flights were $241 and $121 for one-way flights to Seattle for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Sat, Sep 7 - Sat, Sep 14
BOS
Logan Intl.
SEA
Seattle - Tacoma Intl.
$241 Roundtrip, found 3 hours ago
$241
Roundtrip
found 3 hours ago
Select Spirit Airlines flight, departing Sat, Sep 7 from Logan Intl. to Seattle - Tacoma Intl., returning Sat, Sep 14, priced at $241 found 3 hours ago
Sun Country Airlines
Fri, May 31 - Sun, Jun 2
PVD
T.F. Green
SEA
Seattle - Tacoma Intl.
$298 Roundtrip, just found
$298
Roundtrip
just found
Select Sun Country Airlines flight, departing Fri, May 31 from T.F. Green to Seattle - Tacoma Intl., returning Sun, Jun 2, priced at $298 just found
American Airlines
Tue, Aug 27 - Tue, Sep 3
MHT
Manchester-Boston Regional
SEA
Seattle - Tacoma Intl.
$355 Roundtrip, found 1 day ago
$355
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Aug 27 from Manchester-Boston Regional to Seattle - Tacoma Intl., returning Tue, Sep 3, priced at $355 found 1 day ago

Save more with Seattle Flight + Hotel packages

Price found within the past 48 hours. Click for updated prices.
Comfort Inn & Suites Sea-Tac Airport

Comfort Inn & Suites Sea-Tac Airport

3 out of 5
per person
Jun 21 - Jun 27
Roundtrip non-stop flight included
Boston (BOS) to Seattle (SEA)
Lotte Hotel Seattle

Lotte Hotel Seattle

5 out of 5
Save 100% on your flight
per person
Jun 21 - Jun 27
Roundtrip non-stop flight included
Boston (BOS) to Seattle (SEA)
Mediterranean Inn

Mediterranean Inn

3 out of 5
Save 100% on your flight
per person
Jun 21 - Jun 27
Roundtrip non-stop flight included
Boston (BOS) to Seattle (SEA)
The Edgewater Hotel

The Edgewater Hotel

4 out of 5
Save 100% on your flight
per person
Jun 21 - Jun 27
Roundtrip non-stop flight included
Boston (BOS) to Seattle (SEA)
Hotel Theodore

Hotel Theodore

4 out of 5
Save 100% on your flight
per person
Jun 21 - Jun 27
Roundtrip non-stop flight included
Boston (BOS) to Seattle (SEA)
Embassy Suites by Hilton Seattle Downtown Pioneer Square

Embassy Suites by Hilton Seattle Downtown Pioneer Square

3.5 out of 5
Save 100% on your flight
per person
Jun 21 - Jun 27
Roundtrip non-stop flight included
Boston (BOS) to Seattle (SEA)
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