Flights to Cascade Loop Scenic Byway from Boise - ￥63,150

View ￥63,150 flight on Mon, Jul 21, 2025Opens in a new window

Popular airlines from Boise to Cascade Loop Scenic Byway

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Cheap Flights from Boise to Cascade Loop Scenic Byway (BOI-SEA)

Prices were available within the past 7 days and start at ￥63,150 for one-way flights and ￥116,960 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Jul 31 - Tue, Aug 5
BOI
Boise
PAE
Seattle
￥116,960 Roundtrip, found 6 days ago
￥116,960
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Jul 31 from Boise to Seattle, returning Tue, Aug 5, priced at ￥116,960 found 6 days ago
Delta
Thu, Jul 31 - Tue, Aug 5
BOI
Boise
PAE
Seattle
￥118,470 Roundtrip, found 6 days ago
￥118,470
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Jul 31 from Boise to Seattle, returning Tue, Aug 5, priced at ￥118,470 found 6 days ago
United
Thu, Jul 31 - Tue, Aug 5
BOI
Boise
PAE
Seattle
￥122,010 Roundtrip, found 6 days ago
￥122,010
Roundtrip
found 6 days ago
Select United flight, departing Thu, Jul 31 from Boise to Seattle, returning Tue, Aug 5, priced at ￥122,010 found 6 days ago
Delta
Thu, Jul 31 - Tue, Aug 5
BOI
Boise
PAE
Seattle
￥122,770 Roundtrip, found 6 days ago
￥122,770
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Jul 31 from Boise to Seattle, returning Tue, Aug 5, priced at ￥122,770 found 6 days ago
Alaska Airlines
Thu, Jul 31 - Tue, Aug 5
BOI
Boise
PAE
Seattle
￥150,610 Roundtrip, found 6 days ago
￥150,610
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Jul 31 from Boise to Seattle, returning Tue, Aug 5, priced at ￥150,610 found 6 days ago
American Airlines
Thu, Jul 31 - Tue, Aug 5
BOI
Boise
PAE
Seattle
￥357,340 Roundtrip, found 6 days ago
￥357,340
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, Jul 31 from Boise to Seattle, returning Tue, Aug 5, priced at ￥357,340 found 6 days ago

Find the cheapest month to fly from Boise (BOI) to Seattle (SEA)

January is typically the cheapest month to fly

From ￥10,931 - ￥28,198 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.