An Alaska Airlines plane taking off with a snow-capped mountain in the background.

￥28,060 Cheap Flights from Boston (BOS) to Seattle (SEA)

Photo by Port of Seattle
Open Photo by Port of Seattle

Cheap Flights from Boston to Seattle (BOS-SEA)

Prices were available within the past 7 days and start at ￥28,060 for one-way flights and ￥56,400 for roundtrip, for the period specified. Prices and availability are subject to change.
American Airlines
Sun, Oct 25 - Mon, Oct 26
BOS
Boston
SEA
Seattle
￥56,400
Roundtrip
Found 2 days ago
Select American Airlines flight, departing Sun, Oct 25 from Boston to Seattle, returning Mon, Oct 26, priced at ￥56,400 Found 2 days ago
American Airlines
Sun, Oct 25 - Mon, Oct 26
BOS
Boston
SEA
Seattle
￥60,380
Roundtrip
Found 2 days ago
Select American Airlines flight, departing Sun, Oct 25 from Boston to Seattle, returning Mon, Oct 26, priced at ￥60,380 Found 2 days ago
American Airlines
Sun, Oct 25 - Mon, Oct 26
BOS
Boston
SEA
Seattle
￥63,550
Roundtrip
Found 2 days ago
Select American Airlines flight, departing Sun, Oct 25 from Boston to Seattle, returning Mon, Oct 26, priced at ￥63,550 Found 2 days ago
American Airlines
Thu, Oct 22 - Wed, Oct 28
BOS
Boston
SEA
Seattle
￥64,350
Roundtrip
Found 2 days ago
Select American Airlines flight, departing Thu, Oct 22 from Boston to Seattle, returning Wed, Oct 28, priced at ￥64,350 Found 2 days ago
American Airlines
Thu, Oct 22 - Wed, Oct 28
BOS
Boston
SEA
Seattle
￥64,360
Roundtrip
Found 2 days ago
Select American Airlines flight, departing Thu, Oct 22 from Boston to Seattle, returning Wed, Oct 28, priced at ￥64,360 Found 2 days ago
American Airlines
Sun, Oct 25 - Mon, Oct 26
BOS
Boston
SEA
Seattle
￥67,470
Roundtrip
Found 2 days ago
Select American Airlines flight, departing Sun, Oct 25 from Boston to Seattle, returning Mon, Oct 26, priced at ￥67,470 Found 2 days ago
Delta
Fri, May 7 - Mon, May 17
BOS
Boston
SEA
Seattle
￥70,220
Roundtrip
Found 3 days ago
Select Delta flight, departing Fri, May 7 from Boston to Seattle, returning Mon, May 17, priced at ￥70,220 Found 3 days ago
Southwest Airlines
Fri, Dec 18 - Wed, Dec 23
BOS
Boston
SEA
Seattle
￥80,950
Roundtrip
Found 2 days ago
Select Southwest Airlines flight, departing Fri, Dec 18 from Boston to Seattle, returning Wed, Dec 23, priced at ￥80,950 Found 2 days ago
Alaska Airlines
Sun, May 23 - Sun, May 23
BOS
Boston
SEA
Seattle
￥90,340
Roundtrip
Found 2 days ago
Select Alaska Airlines flight, departing Sun, May 23 from Boston to Seattle, returning Sun, May 23, priced at ￥90,340 Found 2 days ago
United
Wed, Dec 23 - Fri, Jan 1
BOS
Boston
SEA
Seattle
￥122,510
Roundtrip
Found 2 days ago
Select United flight, departing Wed, Dec 23 from Boston to Seattle, returning Fri, Jan 1, priced at ￥122,510 Found 2 days ago

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

January is typically the cheapest month to fly

From ￥44,725 - ￥74,656 per traveler.

Travel information

Origin airport
Logan International Airport
Destination airport
Seattle-Tacoma International Airport
Distance
4,003 km away
Airlines serving
Alaska Airlines, American Airlines, Delta, United, Southwest Airlines, Sun Country Airlines, JetBlue Airways
Popular airline
Alaska Airlines
Roundtrip price
￥56,400
Average flight time
7 hours 18 mins
*Available to One Key members.