Cheap flights from Seattle to Southwest Idaho

View AU$106 flight on Wed, 27 Aug. 2025Opens in a new window

Popular airlines from Seattle to Southwest Idaho

  • Jetstar

    Jetstar

  • Qantas Airways

    Qantas Airways

  • Virgin Australia

    Virgin Australia

  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

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Cheap Flights from Seattle (SEA) to Southwest Idaho (BOI)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 27 Aug. - Sun, 31 Aug.
SEA
Seattle
BOI
Boise
AU$196 Return, found 2 days ago
AU$196
Return
found 2 days ago
Select Alaska Airlines flight, departing Wed, 27 Aug. from Seattle to Boise, returning Sun, 31 Aug., priced at AU$196 found 2 days ago
Delta
Wed, 27 Aug. - Sun, 31 Aug.
SEA
Seattle
BOI
Boise
AU$212 Return, found 2 days ago
AU$212
Return
found 2 days ago
Select Delta flight, departing Wed, 27 Aug. from Seattle to Boise, returning Sun, 31 Aug., priced at AU$212 found 2 days ago
Alaska Airlines
Wed, 27 Aug. - Sun, 31 Aug.
SEA
Seattle
BOI
Boise
AU$226 Return, found 2 days ago
AU$226
Return
found 2 days ago
Select Alaska Airlines flight, departing Wed, 27 Aug. from Seattle to Boise, returning Sun, 31 Aug., priced at AU$226 found 2 days ago
Alaska Airlines
Wed, 27 Aug. - Sun, 31 Aug.
SEA
Seattle
BOI
Boise
AU$241 Return, found 2 days ago
AU$241
Return
found 2 days ago
Select Alaska Airlines flight, departing Wed, 27 Aug. from Seattle to Boise, returning Sun, 31 Aug., priced at AU$241 found 2 days ago
United
Wed, 27 Aug. - Sun, 31 Aug.
SEA
Seattle
BOI
Boise
AU$304 Return, found 2 days ago
AU$304
Return
found 2 days ago
Select United flight, departing Wed, 27 Aug. from Seattle to Boise, returning Sun, 31 Aug., priced at AU$304 found 2 days ago
American Airlines
Wed, 27 Aug. - Sun, 31 Aug.
SEA
Seattle
BOI
Boise
AU$1,013 Return, found 2 days ago
AU$1,013
Return
found 2 days ago
Select American Airlines flight, departing Wed, 27 Aug. from Seattle to Boise, returning Sun, 31 Aug., priced at AU$1,013 found 2 days ago

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

January is typically the cheapest month to fly

From AU$117 - AU$302 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.