Cheap flights from Phoenix to Idaho Falls

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Compare Phoenix to Idaho Falls flight deals

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Flight deals from Phoenix to Idaho Falls

Looking for a cheap last-minute deal or the best round-trip flight from Phoenix to Idaho Falls Airport? If you want to travel next month, round-trip fares start from $104. Find the lowest prices on one-way and round-trip tickets right here.

Idaho Falls.$104 per passenger.Departing Sun, Aug 2, returning Fri, Aug 21.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from Phoenix-Mesa Gateway on Sun, Aug 2, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departing from Idaho Falls on Fri, Aug 21, arriving in Phoenix-Mesa Gateway.Price includes taxes and charges.From $104, select.

Idaho Falls.$104 per passenger.Departing Sun, Aug 23, returning Wed, Sep 2.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from Phoenix-Mesa Gateway on Sun, Aug 23, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departing from Idaho Falls on Wed, Sep 2, arriving in Phoenix-Mesa Gateway.Price includes taxes and charges.From $104, select.

Idaho Falls.$110 per passenger.Departing Thu, Oct 1, returning Fri, Oct 9.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from Phoenix-Mesa Gateway on Thu, Oct 1, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departing from Idaho Falls on Fri, Oct 9, arriving in Phoenix-Mesa Gateway.Price includes taxes and charges.From $110, select.

Idaho Falls.$120 per passenger.Departing Fri, Oct 23, returning Sun, Nov 8.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from Phoenix-Mesa Gateway on Fri, Oct 23, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departing from Idaho Falls on Sun, Nov 8, arriving in Phoenix-Mesa Gateway.Price includes taxes and charges.From $120, select.

Idaho Falls.$122 per passenger.Departing Mon, Sep 14, returning Thu, Sep 17.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from Phoenix-Mesa Gateway on Mon, Sep 14, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departing from Idaho Falls on Thu, Sep 17, arriving in Phoenix-Mesa Gateway.Price includes taxes and charges.From $122, select.

Idaho Falls.$122 per passenger.Departing Fri, Sep 18, returning Fri, Oct 9.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from Phoenix-Mesa Gateway on Fri, Sep 18, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departing from Idaho Falls on Fri, Oct 9, arriving in Phoenix-Mesa Gateway.Price includes taxes and charges.From $122, select.

Idaho Falls.$139 per passenger.Departing Thu, Nov 19, returning Mon, Nov 30.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from Phoenix-Mesa Gateway on Thu, Nov 19, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departing from Idaho Falls on Mon, Nov 30, arriving in Phoenix-Mesa Gateway.Price includes taxes and charges.From $139, select.

Idaho Falls.$162 per passenger.Departing Sun, Jul 26, returning Fri, Aug 7.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from Phoenix-Mesa Gateway on Sun, Jul 26, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departing from Idaho Falls on Fri, Aug 7, arriving in Phoenix-Mesa Gateway.Price includes taxes and charges.From $162, select.

Idaho Falls.$224 per passenger.Departing Mon, Jul 27, returning Thu, Jul 30.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from Phoenix-Mesa Gateway on Mon, Jul 27, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departing from Idaho Falls on Thu, Jul 30, arriving in Phoenix-Mesa Gateway.Price includes taxes and charges.From $224, select.

Idaho Falls.$377 per passenger.Departing Sat, Feb 13, returning Wed, Feb 17.Round-trip flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Phoenix Sky Harbor on Sat, Feb 13, arriving in Idaho Falls.Inbound indirect flight with Alaska Airlines, departing from Idaho Falls on Wed, Feb 17, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $377, select.

Idaho Falls.$412 per passenger.Departing Wed, Apr 21, returning Sun, Apr 25.Round-trip flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Phoenix Sky Harbor on Wed, Apr 21, arriving in Idaho Falls.Inbound indirect flight with Alaska Airlines, departing from Idaho Falls on Sun, Apr 25, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $412, select.

Idaho Falls.$537 per passenger.Departing Thu, May 13, returning Sun, May 16.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Phoenix Sky Harbor on Thu, May 13, arriving in Idaho Falls.Inbound indirect flight with Delta, departing from Idaho Falls on Sun, May 16, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $537, select.

Find the cheapest month to fly from Phoenix to Idaho Falls

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Phoenix to Idaho Falls flights are currently cheapest in August.

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Direct flights from Phoenix to Idaho Falls

Phoenix to Idaho Falls: Alternative routes

Compare routes from Phoenix to Idaho Falls below. You may find an airport to fly into that's cheaper, faster, or easier than Idaho Falls.

Idaho Falls

4km from central Idaho Falls

ClosestCheapest

from $104

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Pocatello

79km from central Idaho Falls

from $304

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Phoenix to Idaho Falls: Flight information

The things to know before you go.

Cheapest flight found	$104
Cheapest month to fly	August
Average flight time	2 hrs, 6 mins
Most popular airline	Allegiant Air
Average flights per week	28

Finding cheap flights from Phoenix to Idaho Falls: Frequently asked questions

How much are round-trip flights from Phoenix to Idaho Falls?

The best price we found for a round-trip flight from Phoenix to Idaho Falls is $104. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Phoenix to Idaho Falls?

2 hours and 6 minutes is the average flight time from Phoenix to Idaho Falls.

Which airlines fly direct from Phoenix to Idaho Falls?

Allegiant Air, SkyWest Airlines and American Airlines fly direct from Phoenix to Idaho Falls.

How many flights are there a week from Phoenix to Idaho Falls?

There are 28 flights per week flying from Phoenix to Idaho Falls, as of July 2026.

When is the cheapest time to fly from Phoenix to Idaho Falls?

The cheapest month to fly from Phoenix to Idaho Falls is usually August.

Which upcoming date is cheapest to fly from Phoenix to Idaho Falls Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Phoenix to Idaho Falls Airport on Sunday, August 2, 2026.

Can I get a direct flight from Phoenix to Idaho Falls Airport?

Yes – the average flight time is 2 hours and 6 minutes.

How can I find the best flight deal to Idaho Falls?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Idaho Falls but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Idaho Falls?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Idaho Falls is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly with from Phoenix to Idaho Falls?

The cheapest airline that flies to Idaho Falls is Allegiant Air.

Flying from Phoenix to Idaho Falls Regional Airport (IDA): What you need to know

Kick off your travels at one of Phoenix's main airports, Phoenix Sky Harbor International Airport (PHX) or Phoenix-Mesa Gateway Airport (AZA). Explore your options for booking a flight from Phoenix to Idaho Falls Regional Airport (IDA) departing from either of these.
The average length of a direct Phoenix to Idaho Falls Regional Airport flight is 2 hours 10 minutes.
Idaho Falls's timezone is UTC-7, which is the same as Phoenix. Idaho Falls Regional Airport is located in Idaho Falls.
The busiest route is from Phoenix Sky Harbor International Airport (PHX) to Idaho Falls Regional Airport (IDA). Choose from 4 direct services every week. American Airlines operates a 6:50pm departure between PHX and IDA.
Arrive at the airport on time so you don't miss your flight from Phoenix to IDA. Be there at least two hours ahead for international flights and an hour early for domestic departures to prevent a last-minute sprint to your gate.
Peak months like March or high seasons such as Thanksgiving and Christmas will mean bigger lines at check-in and security. Traveling then? Play it safe and head to the terminal even earlier. Arriving two hours before domestic flights and up four hours ahead of international flights is a smart idea.

Airports in Phoenix

Phoenix Sky Harbor International Airport (PHX)

Go straight to your destination from Phoenix Sky Harbor International Airport (PHX). Nonstop flights from Phoenix to Idaho Falls Regional Airport (IDA) can be booked from here.
American Airlines is a popular airline that offers direct flights from Phoenix to Idaho Falls Regional Airport departing from PHX.
American Airlines is the airline most travelers choose for flights from PHX to IDA.
American Airlines takes the lead in punctuality. An impressive 83.72% of its departures on this route arrive without delay.
PHX is about 5 kilometers from central Phoenix. If you're driving, ride-sharing or catching a cab from the center, it'll take 10 minutes or so to get there, depending on traffic conditions. If you're using public transport, expect the journey time to be around 25 minutes.
Searching for a convenient hotel near Phoenix Sky Harbor International Airport? If you're catching an early flight from Phoenix to Idaho Falls Regional Airport, these stays will have you sleeping just around the corner from the terminal:
80% of flights departing from Phoenix Sky Harbor International Airport touch down at their destination on time. With its strong performance rating, delays are unlikely when setting off from PHX.
PHX is located at 3400 Sky Harbor Boulevard.

Phoenix-Mesa Gateway Airport (AZA)

Looking to fly out of Phoenix-Mesa Gateway Airport (AZA)? Direct Phoenix to Idaho Falls Regional Airport (IDA) plane tickets are available from here.
From AZA, direct flights from Phoenix to IDA can be booked with Allegiant Air.
Allegiant Air ranks number one in bookings on the AZA to IDA route.
If you're looking for a carrier that's reliably punctual, book with Allegiant Air. It has an on-time performance of 82.14% for flights between Phoenix-Mesa Gateway Airport and Idaho Falls Regional Airport.
You can arrive at AZA from central Phoenix in about 30 minutes by car (depending on traffic conditions). The ride on public transport will take roughly 1 hour 15 minutes to travel the 32 kilometers or so.
Got a crack-of-dawn departure? You might like to check in to one of these accommodation options near Phoenix-Mesa Gateway Airport the day before your Phoenix to IDA flight:
Most flights that depart Phoenix-Mesa Gateway Airport land at their destination on schedule. It maintains a high on-time performance rate of 82%.
You'll find AZA at 6033 S. Sossaman Rd..

About Idaho Falls Regional Airport (IDA)

The last thing you need is a lengthy journey to your hotel if you're arriving on a late flight from Phoenix to Idaho Falls Regional Airport. Get comfy at one of these accommodation options near IDA instead:
IDA is located at 2140 North Skyline.

Getting from Idaho Falls Regional Airport (IDA) to central Idaho Falls

Central Idaho Falls is around 8 kilometers from Idaho Falls Regional Airport and takes about 10 minutes to reach by car. See what your options are for making the trip into the city, whether that's with a cab, car rental or ride-share.
Traveling by public transport takes roughly 30 minutes.

How to find the cheapest flights from Phoenix to Idaho Falls Regional Airport (IDA)

At the moment, $46 is the best price we've found for a one-way ticket from Phoenix to Idaho Falls Regional Airport. The cheapest price for a return flight is $104. Keep in mind fares may change due to availability at the time of booking.
Booking in advance is often the key to scoring a cheap flight from Phoenix to IDA. Flight prices rise as demand increases, so the closer your departure date, the more you'll likely spend on your ticket.
If you have some flexibility with your travel plans, use the 'Whole month' tool. It'll give you the lowest price across the month when searching for your Phoenix to Idaho Falls Regional Airport ticket.
You don't need to check every day to find out if fares have dropped when you set up a Price Alert. We'll let you know as soon as a better deal comes up on plane tickets from Phoenix to IDA.
Tailor your trip using filters. Pick your ideal arrival and departure times, total journey duration and airlines. You can also sort the results by 'Fastest,' 'Cheapest' or 'Best' flights from Phoenix to Idaho Falls Regional Airport.

The best time to fly from Phoenix to Idaho Falls Regional Airport (IDA)

December is the quietest month for flights from Phoenix to Idaho Falls Regional Airport (IDA), while July is the most popular. Choose the best time to go to Idaho Falls based on whether you want a laid-back vibe or a more bustling atmosphere.
The warmest month in Idaho Falls is July, with temperatures ranging between 9ºC (48ºF) and 35ºC (95ºF). Book your Phoenix to IDA plane ticket then if that's your idea of comfortable weather.
Search for cheap tickets from Phoenix to Idaho Falls Regional Airport in January if you'd rather travel when it's cooler. Temperatures are at their lowest then, ranging between -15ºC (5ºF) and 1ºC (34ºF).

More about Idaho Falls

When it comes to searching for somewhere to lay your head, you'll find the top stays in Idaho Falls right here. Check out these hotels after locking in your flight from Phoenix to Idaho Falls Regional Airport:
You'll find loads of terrific things to do in Idaho Falls when you're ready to see the sights. Make your way to Snake River Greenbelt followed by Idaho Falls River Walk and East Idaho Aquarium.

Explore more of the United States

You've seen Idaho Falls, now it's time to discover other parts of the United States. Travel about 257 kilometers south to Ogden to check off its popular sights. From Snowbasin Resort to Dinosaur Park and Museum and Ogden Botanical Gardens, there's plenty to keep you busy.
Time for another stop? Set out for Layton. It's roughly 274 kilometers south of Idaho Falls and is known for highlights including SeaQuest Utah and Layton Utah Temple.