$145 Cheap Flights from Idaho Falls (IDA) to Phoenix (PHX)

View $145 flight on Wed, Jan 21, 2026Opens in a new window

Popular airlines from Idaho Falls Regional Airport (IDA) to Phoenix Sky Harbor Intl. Airport (PHX)

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Cheap Flights from Idaho Falls to Phoenix (IDA-PHX)

Prices were available within the past 7 days and start at $145 for one-way flights and $285 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Tue, Oct 28 - Tue, Oct 28
IDA
Idaho Falls
PHX
Phoenix
$285 Roundtrip, found 5 hours ago
$285
Roundtrip
found 5 hours ago
Select Hawaiian Airlines flight, departing Tue, Oct 28 from Idaho Falls to Phoenix, returning Tue, Oct 28, priced at $285 found 5 hours ago
Hawaiian Airlines
Sat, Oct 25 - Wed, Oct 29
IDA
Idaho Falls
PHX
Phoenix
$290 Roundtrip, found 5 hours ago
$290
Roundtrip
found 5 hours ago
Select Hawaiian Airlines flight, departing Sat, Oct 25 from Idaho Falls to Phoenix, returning Wed, Oct 29, priced at $290 found 5 hours ago
United
Tue, May 12 - Sat, May 16
IDA
Idaho Falls
PHX
Phoenix
$291 Roundtrip, found 5 hours ago
$291
Roundtrip
found 5 hours ago
Select United flight, departing Tue, May 12 from Idaho Falls to Phoenix, returning Sat, May 16, priced at $291 found 5 hours ago
American Airlines
Sat, Nov 8 - Wed, Nov 12
IDA
Idaho Falls
PHX
Phoenix
$291 Roundtrip, found 2 hours ago
$291
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sat, Nov 8 from Idaho Falls to Phoenix, returning Wed, Nov 12, priced at $291 found 2 hours ago
Hawaiian Airlines
Tue, Oct 7 - Tue, Oct 14
IDA
Idaho Falls
PHX
Phoenix
$292 Roundtrip, found 20 hours ago
$292
Roundtrip
found 20 hours ago
Select Hawaiian Airlines flight, departing Tue, Oct 7 from Idaho Falls to Phoenix, returning Tue, Oct 14, priced at $292 found 20 hours ago
American Airlines
Sat, Nov 8 - Wed, Nov 12
IDA
Idaho Falls
PHX
Phoenix
$301 Roundtrip, found 2 hours ago
$301
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sat, Nov 8 from Idaho Falls to Phoenix, returning Wed, Nov 12, priced at $301 found 2 hours ago
Delta
Tue, Oct 7 - Tue, Oct 14
IDA
Idaho Falls
PHX
Phoenix
$303 Roundtrip, found 4 days ago
$303
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Oct 7 from Idaho Falls to Phoenix, returning Tue, Oct 14, priced at $303 found 4 days ago
Delta
Tue, Oct 7 - Tue, Oct 14
IDA
Idaho Falls
PHX
Phoenix
$308 Roundtrip, found 4 days ago
$308
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Oct 7 from Idaho Falls to Phoenix, returning Tue, Oct 14, priced at $308 found 4 days ago
Hawaiian Airlines
Sat, Nov 15 - Sat, Nov 15
IDA
Idaho Falls
PHX
Phoenix
$310 Roundtrip, found 2 days ago
$310
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Sat, Nov 15 from Idaho Falls to Phoenix, returning Sat, Nov 15, priced at $310 found 2 days ago
Alaska Airlines
Tue, Oct 21 - Wed, Oct 22
IDA
Idaho Falls
PHX
Phoenix
$310 Roundtrip, found 1 day ago
$310
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Oct 21 from Idaho Falls to Phoenix, returning Wed, Oct 22, priced at $310 found 1 day ago

Find the cheapest month to fly from Idaho Falls (IDA) to Phoenix (PHX)

January is typically the cheapest month to fly

From $254 - $579 per traveler.

Alternative airports near Phoenix

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Sky Harbor Intl. PHX. Cheapest and Closest option available. Average driving time to city center is 10 minutes. Flights from $376
PHX
Sky Harbor Intl.
CheapestClosest
Average driving time to city center10 min
Flights from $376
Flights from Idaho Falls (IDA) to Phoenix (PHX)
Origin airport
Idaho Falls Regional
Destination airport
Sky Harbor Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$284
Distance
696 mi

Idaho Falls to Phoenix Flights

The cheapest times to fly from Idaho Falls to Phoenix

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Idaho Falls to Phoenix are during the month of October. You can find some of the cheapest flights from Idaho Falls to Phoenix with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Idaho Falls to Phoenix

Sunday is one of the best days to book for cheap flights from Idaho Falls to Phoenix: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Idaho Falls to Phoenix

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Idaho Falls to Phoenix in 2025. You can also book with separate airlines for your outbound and return journeys, from $145 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Idaho Falls to Phoenix flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Idaho Falls to Phoenix airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Idaho Falls Regional Airport (IDA) to Sky Harbor Intl. Airport (PHX) cost?
Grab a cheap one-way flight from $145 or cheap return flight from $285 from Idaho Falls Regional Airport (IDA) to Sky Harbor Intl. Airport (PHX) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Idaho Falls Regional Airport (IDA) to Sky Harbor Intl. Airport (PHX)?
The cheapest month to fly from IDA to PHX is October, when there's less demand. Off-peak months are typically when better flight deals are available between these airports.
Which airlines fly direct from Idaho Falls Regional Airport (IDA) to Sky Harbor Intl. Airport (PHX)?
When setting off from Idaho Falls Regional Airport (IDA), you can jump on a nonstop flight to Sky Harbor Intl. Airport (PHX) with American Airlines.
What is the cheapest airline that flies from Idaho Falls Regional Airport (IDA) to Sky Harbor Intl. Airport (PHX)?
To find the cheapest airline that'll fly you from IDA to PHX, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Idaho Falls Regional Airport (IDA) to Sky Harbor Intl. Airport (PHX)?
On average, Idaho Falls Regional Airport (IDA) only offers 1 nonstop flight to Sky Harbor Intl. Airport (PHX) daily. For more choices, try Expedia's easy-to-use filter tool. Simply enter your details, then select "1 Stop" or "2+ Stops" to find flights offering layovers.
What are the most popular departure times for flights from Idaho Falls Regional Airport (IDA) to Sky Harbor Intl. Airport (PHX)?
The 5 AM departures from IDA to PHX are the busiest. Prices can be higher for these popular slots. If you're looking to save, book during off-peak hours.
What day of the week has the most flights from IDA to PHX?
If you travel on a Saturday, you'll get the widest range of options for flights from Idaho Falls Regional Airport (IDA) to Sky Harbor Intl. Airport (PHX).
What is the earliest flight from Idaho Falls Regional Airport (IDA) to Sky Harbor Intl. Airport (PHX)?
Idaho Falls Regional Airport (IDA)'s earliest flight to Sky Harbor Intl. Airport (PHX) leaves at approximately 5:30AM UTC-7. With a travel time of 2h 15m, you'll arrive at around 7:45AM UTC-7.
How long does it take to fly from Idaho Falls Regional Airport (IDA) to Sky Harbor Intl. Airport (PHX)?
Flights from IDA to PHX have an average travel time of 2 hours and 15 minutes. The distance between the two is 700 mi.
What airline has the least delays from IDA to PHX?
With 81% of flights typically landing on schedule, American Airlines has the best on-time performance for direct flights from Idaho Falls Regional Airport (IDA) to Sky Harbor Intl. Airport (PHX). To monitor your flight status and get notified if anything changes, head to the Expedia App.
What is the best time to fly from Idaho Falls Regional Airport (IDA) to Sky Harbor Intl. Airport (PHX)?
To reach Sky Harbor Intl. Airport (PHX) on schedule, book a flight that leaves Idaho Falls Regional Airport (IDA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Phoenix from Idaho Falls Regional Airport (IDA)?
Hop on a direct flight from Idaho Falls Regional Airport (IDA) to Phoenix and arrive at Sky Harbor Intl. Airport (PHX). An alternative entry point into the city is Phoenix - Mesa Gateway Airport (AZA).
Is it cheaper to buy a plane ticket from Idaho Falls Regional Airport (IDA) to Sky Harbor Intl. Airport (PHX) last-minute?
Holding off until just before your departure to book your flight from IDA to PHX generally means paying more. While it's possible to find some last-minute discounts, they're not always guaranteed. Be flexible with your itinerary to boost your chances of snagging a bargain.
Is it cheaper to book an IDA to PHX flight and hotel package?
You can save money by booking an IDA to PHX flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. Once you've selected your preferred flights and accommodations, you can add extras like activities, car rentals and tours.
Can I cancel or change the date of my flight from Idaho Falls Regional Airport (IDA) to Sky Harbor Intl. Airport (PHX)?
In most cases, you can reschedule or cancel your IDA to PHX flight. However, additional charges may apply, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you'd like further details, head to our Customer Service portal.

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*Available to One Key members.