AirHint found the following cheapest one-way flights from Boise (BOI) to Phoenix (PHX) in August 2025 (see full year).
One-Way flights
| 26 Aug | Alaska Airlines | direct | |
| 15 Aug | Allegiant Air | direct | |
| 29 Aug | Allegiant Air | direct | |
| 11 Aug | Allegiant Air | direct | |
| 14 Aug | Alaska Airlines | direct |
Also check the deals for return flights from Boise to Phoenix in August.
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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