Cheap Flights from Seattle to West Boise

View €87 flight on Sun, 24 Aug 2025Opens in a new window

Popular airlines from Seattle to West Boise

  • Alaska Airlines

    Alaska Airlines

  • Delta

    Delta

  • United

    United

  • Southwest Airlines

    Southwest Airlines

  • American Airlines

    American Airlines

  • Hawaiian Airlines

    Hawaiian Airlines

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Cheap flights from Seattle to West Boise (SEA-BOI)

Prices were available within the past 7 days and start at €87 for one-way flights and €121 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, 19 Sep - Sat, 20 Sep
SEA
Seattle
BOI
Boise
€121 Return, found 1 day ago
€121
Return
found 1 day ago
Select Delta flight, departing Fri, 19 Sep from Seattle to Boise, returning Sat, 20 Sep, priced at €121 found 1 day ago
Delta
Fri, 19 Sep - Sat, 20 Sep
SEA
Seattle
BOI
Boise
€138 Return, found 1 day ago
€138
Return
found 1 day ago
Select Delta flight, departing Fri, 19 Sep from Seattle to Boise, returning Sat, 20 Sep, priced at €138 found 1 day ago
Delta
Mon, 15 Sep - Thu, 18 Sep
SEA
Seattle
BOI
Boise
€171 Return, found 20 hours ago
€171
Return
found 20 hours ago
Select Delta flight, departing Mon, 15 Sep from Seattle to Boise, returning Thu, 18 Sep, priced at €171 found 20 hours ago
United
Mon, 15 Sep - Thu, 18 Sep
SEA
Seattle
BOI
Boise
€222 Return, found 20 hours ago
€222
Return
found 20 hours ago
Select United flight, departing Mon, 15 Sep from Seattle to Boise, returning Thu, 18 Sep, priced at €222 found 20 hours ago
American Airlines
Sat, 30 Aug - Sun, 31 Aug
SEA
Seattle
BOI
Boise
€616 Return, found 1 day ago
€616
Return
found 1 day ago
Select American Airlines flight, departing Sat, 30 Aug from Seattle to Boise, returning Sun, 31 Aug, priced at €616 found 1 day ago
Alaska Airlines
Fri, 19 Sep - Sat, 20 Sep
PAE
Seattle
BOI
Boise
€651 Return, found 1 day ago
€651
Return
found 1 day ago
Select Alaska Airlines flight, departing Fri, 19 Sep from Seattle to Boise, returning Sat, 20 Sep, priced at €651 found 1 day ago

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

January is typically the cheapest month to fly

From €66 - €170 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.