Allegiant AirDepart11:44
Fri, Nov 13AZA → BOI
2h 09m · Direct
$78one way, per person
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- Cheapest fare
- $78
- Cheapest month
- November
- Direct flights
- Yes
- Flight time
- 2h 09m
Allegiant Air · Fri, Nov 13
from $78
Allegiant Air and American Airlines
1,190 km
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Cheapest month to fly from Phoenix to Boise
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
See every date in November 2026 →
Plan the rest of your trip to Boise
Where to stay, what to do and getting around, from our travel partners.
About flights from Phoenix to Boise
Phoenix (PHX) and Boise (BOI) are about 1,190 km apart. Direct flights take around 2h 09m, and recent direct fares were with Allegiant Air and American Airlines. Over the next few months, one-way fares start from $78, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Phoenix to Boise?
The cheapest one-way fare we've seen recently is $78 with Allegiant Air, departing Friday, November 13, 2026.
What is the cheapest month to fly from Phoenix to Boise?
November 2026 currently has the lowest fares, from $78 one way.
Are there direct flights from Phoenix to Boise?
Yes. Recent direct fares were with Allegiant Air and American Airlines.
How long is the flight from Phoenix to Boise?
A direct flight takes about 2h 09m. Phoenix and Boise are around 1,190 km apart.
Which airlines fly from Phoenix to Boise?
Recent fares on this route were with Allegiant Air and American Airlines.
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