Cheap flights from Salt Lake City to Southwest Idaho from CA $89

View CA $89 flight on Fri, Sep. 5, 2025Opens in a new window

Popular airlines from Salt Lake City to Southwest Idaho

  • Air Canada

    Air Canada

  • WestJet

    WestJet

  • Flair Airlines

    Flair Airlines

  • American Airlines

    American Airlines

  • United

    United

  • Delta

    Delta

  • Porter Airlines

    Porter Airlines

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Cheap flights from Salt Lake City (SLC) to Southwest Idaho (BOI)

Prices were available within the past 7 days and start at CA $89 for one-way flights and CA $590 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Jul. 29 - Tue, Aug. 5
SLC
Salt Lake City
BOI
Boise
CA $590 Roundtrip, found 2 days ago
CA $590
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Jul. 29 from Salt Lake City to Boise, returning Tue, Aug. 5, priced at CA $590 found 2 days ago
Delta
Tue, Jul. 29 - Sat, Aug. 2
SLC
Salt Lake City
BOI
Boise
CA $657 Roundtrip, found 2 days ago
CA $657
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Jul. 29 from Salt Lake City to Boise, returning Sat, Aug. 2, priced at CA $657 found 2 days ago
Hawaiian Airlines
Tue, Jul. 29 - Wed, Jul. 30
SLC
Salt Lake City
BOI
Boise
CA $1,032 Roundtrip, found 2 days ago
CA $1,032
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Tue, Jul. 29 from Salt Lake City to Boise, returning Wed, Jul. 30, priced at CA $1,032 found 2 days ago
Alaska Airlines
Sun, Jul. 27 - Tue, Jul. 29
SLC
Salt Lake City
BOI
Boise
CA $1,254 Roundtrip, found 2 days ago
CA $1,254
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sun, Jul. 27 from Salt Lake City to Boise, returning Tue, Jul. 29, priced at CA $1,254 found 2 days ago
United
Sun, Jul. 27 - Tue, Jul. 29
SLC
Salt Lake City
BOI
Boise
CA $1,335 Roundtrip, found 2 days ago
CA $1,335
Roundtrip
found 2 days ago
Select United flight, departing Sun, Jul. 27 from Salt Lake City to Boise, returning Tue, Jul. 29, priced at CA $1,335 found 2 days ago
American Airlines
Sun, Jul. 27 - Tue, Jul. 29
SLC
Salt Lake City
BOI
Boise
CA $1,629 Roundtrip, found 2 days ago
CA $1,629
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sun, Jul. 27 from Salt Lake City to Boise, returning Tue, Jul. 29, priced at CA $1,629 found 2 days ago

Find the cheapest month to fly from Salt Lake City (SLC) to Boise (BOI)

August is typically the cheapest month to fly

From CA $117 - CA $561 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.