Cheap flights from Phoenix to Southwest Idaho from CA $93

View CA $93 flight on Mon, Sep. 8, 2025Opens in a new window

Popular airlines from Phoenix to Southwest Idaho

  • Air Canada

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  • WestJet

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  • Flair Airlines

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  • American Airlines

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  • United

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  • Delta

    Delta

  • Porter Airlines

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Cheap flights from Phoenix (PHX) to Southwest Idaho (BOI)

Prices were available within the past 7 days and start at CA $93 for one-way flights and CA $187 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Wed, Oct. 8 - Tue, Oct. 28
PHX
Phoenix
BOI
Boise
CA $187 Roundtrip, found 1 day ago
CA $187
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Wed, Oct. 8 from Phoenix to Boise, returning Tue, Oct. 28, priced at CA $187 found 1 day ago
American Airlines
Mon, Sep. 8 - Wed, Sep. 10
PHX
Phoenix
BOI
Boise
CA $189 Roundtrip, found 3 days ago
CA $189
Roundtrip
found 3 days ago
Select American Airlines flight, departing Mon, Sep. 8 from Phoenix to Boise, returning Wed, Sep. 10, priced at CA $189 found 3 days ago
Alaska Airlines
Wed, Sep. 17 - Thu, Sep. 18
PHX
Phoenix
BOI
Boise
CA $189 Roundtrip, found 3 days ago
CA $189
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Sep. 17 from Phoenix to Boise, returning Thu, Sep. 18, priced at CA $189 found 3 days ago
Alaska Airlines
Wed, Oct. 8 - Sun, Oct. 26
PHX
Phoenix
BOI
Boise
CA $200 Roundtrip, found 1 day ago
CA $200
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Oct. 8 from Phoenix to Boise, returning Sun, Oct. 26, priced at CA $200 found 1 day ago
Delta
Fri, Oct. 10 - Sat, Oct. 25
PHX
Phoenix
BOI
Boise
CA $214 Roundtrip, found 1 day ago
CA $214
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct. 10 from Phoenix to Boise, returning Sat, Oct. 25, priced at CA $214 found 1 day ago
United
Mon, Nov. 17 - Fri, Dec. 5
PHX
Phoenix
BOI
Boise
CA $364 Roundtrip, found 1 day ago
CA $364
Roundtrip
found 1 day ago
Select United flight, departing Mon, Nov. 17 from Phoenix to Boise, returning Fri, Dec. 5, priced at CA $364 found 1 day ago

Find the cheapest month to fly from Phoenix (PHX) to Boise (BOI)

August is typically the cheapest month to fly

From CA $124 - CA $320 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.