Cheapest return flights from Boise to Phoenix in August from $74

AirHint found the following cheapest return flights from Boise (BOI) to Phoenix (PHX) in August 2025 (see full year).

Return flights

13 Aug - 19 Aug Alaska Airlines direct
01 Aug - 04 Aug Allegiant Air direct
01 Aug - 15 Aug Allegiant Air direct
01 Aug - 11 Aug Allegiant Air direct
04 Aug - 15 Aug Allegiant Air direct
04 Aug - 08 Aug Allegiant Air direct
04 Aug - 11 Aug Allegiant Air direct
26 Aug - 31 Aug Southwest Airlines direct
15 Aug - 01 Sep Allegiant Air direct
18 Aug - 01 Sep Allegiant Air direct
11 Aug - 15 Aug Allegiant Air direct
29 Aug - 01 Sep Allegiant Air direct
29 Aug - 19 Sep Allegiant Air direct
11 Aug - 01 Sep Allegiant Air direct
15 Aug - 05 Sep Allegiant Air direct
18 Aug - 05 Sep Allegiant Air direct
29 Aug - 05 Sep Allegiant Air direct
29 Aug - 02 Sep Alaska Airlines direct
29 Aug - 12 Sep Allegiant Air direct

Also check the deals for one-way flights from Boise to Phoenix in August.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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