Cheap flights from Boise to Phoenix

One-way fares from $150 · BOI → PHX · prices found by travellers in the last 48 hours

Compare all dates Phoenix → Boise
Cheapest fare
$150

Allegiant Air · Fri, Nov 13

Cheapest month
November

from $150

Direct flights
Yes

Allegiant Air

Flight time
2h 07m

1,190 km

Get a price alert

We'll email you when Boise → Phoenix drops to your price. It's free, and you can stop any time.

Today's cheapest fare is $150. We'll send one email to confirm. See our privacy policy.

Cheapest month to fly from Boise to Phoenix

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 Cheapest $150

Cheapest dates in November 2026

The lowest fares we've seen for each day, cheapest first.

Allegiant Air
Depart14:43 Fri, Nov 13BOI → AZA 2h 07m · Direct
$150one way, per person
View deal
Frontier Airlines
Depart14:49 Thu, Nov 12BOI → PHX 3h 16m · 1 stop
$180one way, per person
View deal
See every date in November 2026 →

Plan the rest of your trip to Phoenix

Where to stay, what to do and getting around, from our travel partners.

Where to stay

Hotels in PhoenixCompare places to stay on Booking.com Find hotels →

Things to do

Things to do in PhoenixTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in PhoenixPre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in PhoenixCompare rental cars from major brands on EconomyBookings Compare cars →

About flights from Boise to Phoenix

Boise (BOI) and Phoenix (PHX) are about 1,190 km apart. Direct flights take around 2h 07m, and recent direct fares were with Allegiant Air. Over the next few months, one-way fares start from $150, 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 Boise to Phoenix?

The cheapest one-way fare we've seen recently is $150 with Allegiant Air, departing Friday, November 13, 2026.

What is the cheapest month to fly from Boise to Phoenix?

November 2026 currently has the lowest fares, from $150 one way.

Are there direct flights from Boise to Phoenix?

Yes. Recent direct fares were with Allegiant Air.

How long is the flight from Boise to Phoenix?

A direct flight takes about 2h 07m. Boise and Phoenix are around 1,190 km apart.

Which airlines fly from Boise to Phoenix?

Recent fares on this route were with Allegiant Air and Frontier Airlines.

More cheap flights from Boise

Compare flights to Phoenix from other cities →