Phoenix / Mesa to Idaho Falls Flights on Allegiant from $62*

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*Modifying this information may result in a different fare

Flights from Phoenix / Mesa to Idaho Falls

*Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply.

Deals from Phoenix / Mesa to Idaho Falls

Deals from Phoenix / Mesa to Idaho Falls
From
To
Fare Type
Dates
Price
Phoenix / Mesa (AZA)Idaho Falls (IDA)One-way
/
Economy
Departing: December 16 2025

From

$62

Seen: 8 hrs ago

Phoenix / Mesa (AZA)Idaho Falls (IDA)One-way
/
Economy
Departing: December 25 2025

From

$62

Seen: 6 minutes ago

Phoenix / Mesa (AZA)Idaho Falls (IDA)One-way
/
Economy
Departing: December 17 2025

From

$68

Seen: 8 hrs ago

Phoenix / Mesa (AZA)Idaho Falls (IDA)One-way
/
Economy
Departing: December 15 2025

From

$74

Seen: 1 day ago

Phoenix / Mesa (AZA)Idaho Falls (IDA)One-way
/
Economy
Departing: January 9 2026

From

$74

Seen: 8 hrs ago

Phoenix / Mesa (AZA)Idaho Falls (IDA)One-way
/
Economy
Departing: December 11 2025

From

$74

Seen: 2 hrs ago

*Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply.

Flight Details

Allegiant flight to Idaho Falls Regional Airport (IDA)

Departing From:

Phoenix-Mesa Gateway Airport (AZA)

Arriving To:

Idaho Falls Regional Airport (IDA)

Average Flight Time:

02 hours 05 minutes

Travel Tips

Bundles are packages of popular services with an added discount.

Select a bundle to:

  • Streamline the booking experience

  • Save time

  • Save money!

  • Click here for more information.

Allegiant proudly supports our military and our military veterans by offering select free benefits through the Allegiant Honors program.

  • Benefits include free checked bag, carry on, etc. Click here to learn more.

Lock in the lowest price by adding your checked and carryon bags when you book your flight.

  • By charging for carry-ons, we ensure there is space for everyone who needs it.

  • This leads to speedier boarding. Click here to see your bag options.

Cheap flights to Idaho Falls, ID (IDA) with Allegiant Airlines

About Idaho Falls

Idaho Falls Regional Airport is located two miles northwest from central business district of Idaho Falls, ID. Explore and get to know Idaho Falls by booking a car along with your flight. Allegiant offers exclusive discounts with Alamo, Enterprise and National when you rent a car with your flight to Idaho Falls.

Frequently Asked Questions

Yes, Allegiant provides in-flight service on every flight. For more details on the variety of snacks and drinks available on board flights for purchase, check out our In Flight Refreshments & Services page.

Yes, all Allegiant Air flights from Phoenix / Mesa to Idaho Falls are nonstop.

The day with the lowest fare can differ week to week. To find out what upcoming days have the lowest price to from fly Phoenix / Mesa to Idaho Falls, please check out our flight search tool, which makes finding our lowest fare a breeze.

You can make changes to your reservation from Phoenix / Mesa to Idaho Falls a breeze by clicking Manage Trips on our homepage. Fees and fare difference may apply.

Click Flight Status on our homepage to view the status of your upcoming flight from Phoenix / Mesa to Idaho Falls.

Yes you can book a rental car. Yes, rental car facilities are available in Idaho Falls. Allegiant offers exclusive discounts with Alamo, Enterprise and National when you book a car together with your flight from Phoenix / Mesa to Idaho Falls. Allegiant’s travel bundle makes flying a breeze.