What are the cheapest airlines flying from Phoenix to Idaho Falls round-trip?

Cheapflights users have booked flights from Phoenix to Idaho Falls round-trip from $100. Other airlines that can offer you cheap pricing are United Airlines, from $247, and American Airlines, from $271. Allegiant Air is priced at 78% lower than the current average price of a flight leaving 3 months from now.

What is the cheapest day to fly from Phoenix to Idaho Falls?

Travelers seeking maximum savings on their Phoenix to Idaho Falls flight should consider departing on Friday evenings when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Idaho Falls ranges from 0.6 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. July is typically the driest time to visit Idaho Falls when rainfall is around 0.6 in.

If weather is an important factor for your trip to Idaho Falls, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

What are the most popular airlines that fly from Phoenix to Idaho Falls?

When booking a flight from Phoenix to Idaho Falls, you may want to consider flying on American Airlines, Delta or United Airlines as they are the most popular for this route.

What is the cheapest day to fly round-trip from Phoenix to Idaho Falls?

Tuesday flights are generally found to be more expensive for flights from Phoenix to Idaho Falls. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Idaho Falls.

What is the cheapest month to fly from Phoenix to Idaho Falls?

April can be a great time to fly to Idaho Falls from Phoenix with a flight ticket averaging about $473. Cheapflights users have found deals in the month of April for as cheap as $209. The most expensive prices can be found in the month of November.

What airport do you fly into for flights to Idaho Falls from Phoenix?

Most people fly into Idaho Falls Fanning Field (IDA) if they book a flight to Idaho Falls from Phoenix. On average, Fanning Field has 0 inbound flights from Phoenix per day from 4 airlines. Idaho Falls Fanning Field is conveniently located just 3.8 mi from Idaho Falls’s city center.

Can I find deals for flights from Phoenix to Idaho Falls that include hotel bookings?

Yes. In addition to deals on Phoenix to Idaho Falls flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Phoenix to Idaho Falls?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Phoenix to Idaho Falls.

Can I find deals for business class flights from Phoenix to Idaho Falls?

Yes. Cheapflights offers flight deals from Phoenix to Idaho Falls by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$107+ Flights from Phoenix to Idaho Falls

Q: How much does it cost to fly round-trip from Phoenix to Idaho Falls?

Airfare is below average for this route at the moment. Phoenix to Idaho Falls flights typically cost between $319 and $606 in September. The cheapest round-trip price found within the last 3 days was $214 on Multiple Airlines (Sep 14-Sep 19).

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Cheap flight deals from Phoenix to Idaho Falls

Round-trip from	$214 (Kiwi.com)
One-way from	$107 (Kiwi.com)
Popular in	November
Cheapest in	April
Average price	$403

From Phoenix to Idaho Falls Fanning Field

Search Deals

One-way flight from Phoenix to Idaho Falls Fanning Field

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Highest demand for flights based on searches. 14% potential increase in price ($82 potential increase over avg. RT price).

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Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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Find flight deals from Phoenix to Idaho Falls

Cheapest flights from Phoenix to Idaho Falls
Explore the most affordable flight options available from Phoenix to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2025.

Sun 9/148:40 pmPHX - IDA

1 stop17h 09mMultiple Airlines

Fri 9/1910:55 pmIDA - PHX

1 stop24h 54mMultiple Airlines

Deal found 8/20

$214

Thu 9/118:40 pmPHX - IDA

1 stop18h 25mMultiple Airlines

Mon 9/159:39 pmIDA - PHX

1 stop25h 42mMultiple Airlines

Deal found 8/20

$230

Sun 10/128:03 pmPHX - IDA

1 stop15h 46mMultiple Airlines

Fri 10/3110:57 pmIDA - PHX

1 stop15h 13mMultiple Airlines

Deal found 8/21

$238

Mon 9/225:30 amPHX - IDA

1 stop8h 19mMultiple Airlines

Fri 9/264:55 pmIDA - PHX

1 stop24h 59mMultiple Airlines

Deal found 8/21

$241

Mon 9/82:57 pmPHX - IDA

1 stop4h 52mMultiple Airlines

Fri 9/1910:55 pmIDA - PHX

1 stop18h 37mMultiple Airlines

Deal found 8/20

$259

Fri 9/56:00 amPHX - IDA

1 stop9h 05mMultiple Airlines

Mon 9/89:39 pmIDA - PHX

1 stop25h 42mMultiple Airlines

Deal found 8/21

$300

Fri 8/295:30 amPHX - IDA

1 stop9h 29mMultiple Airlines

Sun 8/315:51 pmIDA - PHX

1 stop6h 33mMultiple Airlines

Deal found 8/21

$349

Best flights from Phoenix to Idaho Falls
Discover carefully curated flight deals from Phoenix to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 21, 2025.

Sun 9/148:40 pmPHX - IDA

1 stop17h 09mMultiple Airlines

Fri 9/1910:55 pmIDA - PHX

1 stop24h 54mMultiple Airlines

Deal found 8/20

$214

Thu 9/118:40 pmPHX - IDA

1 stop18h 25mMultiple Airlines

Mon 9/159:39 pmIDA - PHX

1 stop25h 42mMultiple Airlines

Deal found 8/20

$230

Sun 10/128:03 pmPHX - IDA

1 stop15h 46mMultiple Airlines

Fri 10/3110:57 pmIDA - PHX

1 stop15h 13mMultiple Airlines

Deal found 8/21

$238

Mon 9/225:30 amPHX - IDA

1 stop8h 19mMultiple Airlines

Fri 9/264:55 pmIDA - PHX

1 stop24h 59mMultiple Airlines

Deal found 8/21

$241

Mon 9/82:57 pmPHX - IDA

1 stop4h 52mMultiple Airlines

Fri 9/1910:55 pmIDA - PHX

1 stop18h 37mMultiple Airlines

Deal found 8/20

$259

Fri 9/56:00 amPHX - IDA

1 stop9h 05mMultiple Airlines

Mon 9/89:39 pmIDA - PHX

1 stop25h 42mMultiple Airlines

Deal found 8/21

$300

Last-minute flights from Phoenix to Idaho Falls
Discover last-minute flight deals from Phoenix to Idaho Falls. Data last updated August 21, 2025 and is based on user searches.

Fri 8/295:30 amPHX - IDA

1 stop9h 29mMultiple Airlines

Sun 8/315:51 pmIDA - PHX

1 stop6h 33mMultiple Airlines

Deal found 8/21

$349

Fri 9/56:00 amPHX - IDA

1 stop9h 05mMultiple Airlines

Mon 9/89:39 pmIDA - PHX

1 stop25h 42mMultiple Airlines

Deal found 8/21

$300

Mon 9/82:57 pmPHX - IDA

1 stop4h 52mMultiple Airlines

Fri 9/1910:55 pmIDA - PHX

1 stop18h 37mMultiple Airlines

Deal found 8/20

$259

Thu 9/118:40 pmPHX - IDA

1 stop18h 25mMultiple Airlines

Mon 9/159:39 pmIDA - PHX

1 stop25h 42mMultiple Airlines

Deal found 8/20

$230

Sat 9/139:30 amPHX - IDA

1 stop6h 53mUnited Airlines

Sat 9/205:00 amIDA - PHX

1 stop5h 12mUnited Airlines

Deal found 8/21

$361

Sun 9/148:40 pmPHX - IDA

1 stop17h 09mMultiple Airlines

Fri 9/1910:55 pmIDA - PHX

1 stop24h 54mMultiple Airlines

Deal found 8/20

$214

Mon 9/225:30 amPHX - IDA

1 stop8h 19mMultiple Airlines

Fri 9/264:55 pmIDA - PHX

1 stop24h 59mMultiple Airlines

Deal found 8/21

$241

One-way flights from Phoenix to Idaho Falls
Search for one-way flight options from Phoenix to Idaho Falls. Find affordable one-way fares based on user searches. Data last updated August 21, 2025.

Mon 9/225:30 amPHX - IDA

1 stop8h 19mMultiple Airlines

Deal found 8/21

$107

Sun 9/148:40 pmPHX - IDA

1 stop17h 09mMultiple Airlines

Deal found 8/20

$109

Sun 9/218:40 pmPHX - IDA

1 stop17h 09mMultiple Airlines

Deal found 8/20

$114

Thu 11/208:13 pmPHX - IDA

1 stop18h 42mMultiple Airlines

Deal found 8/21

$118

Mon 10/205:45 amPHX - IDA

1 stop6h 04mMultiple Airlines

Deal found 8/21

$121

Sun 10/198:03 pmPHX - IDA

1 stop15h 46mMultiple Airlines

Deal found 8/21

$123

Fri 9/196:00 amPHX - IDA

1 stop9h 05mMultiple Airlines

Deal found 8/21

$124

Thu 9/118:40 pmPHX - IDA

1 stop18h 25mMultiple Airlines

Deal found 8/21

$127

Wed 11/198:28 pmPHX - IDA

Nonstop2h 06mAmerican Airlines

Deal found 8/20

$138

Cheapflights Fare Finder

Use the filters below to find and compare flights from Phoenix to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhoenixIdaho Falls

PHX - IDA

PHXIDA

Phoenix Sky Harbor Intl

Sun 9/14

8:40 pm-2:49 pm

1 stop17h 09m

Idaho Falls Fanning Field

Fri 9/19

10:55 pm-10:49 pm

1 stop24h 54m

$214

PhoenixIdaho Falls

PHX - IDA

PHXIDA

Phoenix Sky Harbor Intl

Thu 9/11

8:40 pm-4:05 pm

1 stop18h 25m

Idaho Falls Fanning Field

Mon 9/15

9:39 pm-10:21 pm

1 stop25h 42m

$230

PhoenixIdaho Falls

PHX - IDA

PHXIDA

Phoenix Sky Harbor Intl

Sun 10/12

8:03 pm-12:49 pm

1 stop15h 46m

Idaho Falls Fanning Field

Fri 10/31

10:57 pm-1:10 pm

1 stop15h 13m

$238

PhoenixIdaho Falls

PHX - IDA

PHXIDA

Phoenix Sky Harbor Intl

Mon 9/22

5:30 am-2:49 pm

1 stop8h 19m

Idaho Falls Fanning Field

Fri 9/26

4:55 pm-4:54 pm

1 stop24h 59m

$241

PhoenixIdaho Falls

PHX - IDA

PHXIDA

Phoenix Sky Harbor Intl

Mon 9/8

2:57 pm-8:49 pm

1 stop4h 52m

Idaho Falls Fanning Field

Fri 9/19

10:55 pm-4:32 pm

1 stop18h 37m

$259

PhoenixIdaho Falls

PHX - IDA

PHXIDA

Phoenix Sky Harbor Intl

Fri 9/5

6:00 am-4:05 pm

1 stop9h 05m

Idaho Falls Fanning Field

Mon 9/8

9:39 pm-10:21 pm

1 stop25h 42m

$300

PhoenixIdaho Falls

PHX - IDA

PHXIDA

Phoenix Sky Harbor Intl

Thu 10/16

8:58 pm-4:14 pm

1 stop18h 16m

$107

PhoenixIdaho Falls

PHX - IDA

PHXIDA

Phoenix Sky Harbor Intl

Mon 9/22

5:30 am-2:49 pm

1 stop8h 19m

$107

PhoenixIdaho Falls

PHX - IDA

PHXIDA

Phoenix Sky Harbor Intl

Sun 9/14

8:40 pm-2:49 pm

1 stop17h 09m

$109

PhoenixIdaho Falls

PHX - IDA

PHXIDA

Phoenix Sky Harbor Intl

Sun 9/21

8:40 pm-2:49 pm

1 stop17h 09m

$109

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/21

Showing 1-10 of 15 results

Best time to book a flight from Phoenix to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from Phoenix with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Phoenix to Idaho Falls

What is the cheapest month to book a flight from Phoenix to Idaho Falls?

Currently, October is the cheapest month in which you can book a flight from Phoenix to Idaho Falls (average of $380). Flying from Phoenix to Idaho Falls in December is currently the most expensive (average of $578). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PHX to IDA?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 28% on flights from Phoenix to Idaho Falls by exploring options for tickets in the morning.

How much does it cost to fly round-trip from Phoenix to Idaho Falls?

Reviews of airlines servicing Idaho Falls

Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Phoenix to Idaho Falls. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,981 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,930 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Allegiant Air

7.2

Good

702 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What airport do you fly into for flights to Idaho Falls from Phoenix?
Most people fly into Idaho Falls Fanning Field (IDA) if they book a flight to Idaho Falls from Phoenix. On average, Fanning Field has 0 inbound flights from Phoenix per day from 4 airlines. Idaho Falls Fanning Field is conveniently located just 3.8 mi from Idaho Falls’s city center.
What are the cheapest airlines flying from Phoenix to Idaho Falls round-trip?
Cheapflights users have booked flights from Phoenix to Idaho Falls round-trip from $100. Other airlines that can offer you cheap pricing are United Airlines, from $247, and American Airlines, from $271. Allegiant Air is priced at 78% lower than the current average price of a flight leaving 3 months from now.
Can I find deals for flights from Phoenix to Idaho Falls that include hotel bookings?
Yes. In addition to deals on Phoenix to Idaho Falls flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Phoenix to Idaho Falls?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Phoenix to Idaho Falls.
Can I find deals for business class flights from Phoenix to Idaho Falls?
Yes. Cheapflights offers flight deals from Phoenix to Idaho Falls by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Phoenix to Idaho Falls?
Currently, October is the cheapest month in which you can book a flight from Phoenix to Idaho Falls (average of $380). Flying from Phoenix to Idaho Falls in December is currently the most expensive (average of $578). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 4 airlines flying from Phoenix to Idaho Falls

Airline	Cheapest	Average	Flexibility	On-time
Allegiant Air	Cheapest$100	Average$198	FlexibilityNo cancel fee	On-time88%
United Airlines	Cheapest$247	Average$424	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$271	Average$586	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$285	Average$408	FlexibilityNo cancel fee	On-timeN/A

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$107+ Cheap flights from Phoenix to Idaho Falls (IDA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/22. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Phoenix to Idaho Falls

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Find flight deals from Phoenix to Idaho Falls

Cheapest flights from Phoenix to Idaho FallsExplore the most affordable flight options available from Phoenix to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2025.

Explore the most affordable flight options available from Phoenix to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Phoenix to Idaho Falls that are best for you.

Best time to book a flight from Phoenix to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from Phoenix with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Phoenix to Idaho Falls

What is the cheapest month to book a flight from Phoenix to Idaho Falls?

What is the cheapest time of day to fly from PHX to IDA?

Find hourly flight availability from Phoenix to Idaho Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 21, 2025.

How much does it cost to fly round-trip from Phoenix to Idaho Falls?

Reviews of airlines servicing Idaho Falls

Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Phoenix to Idaho Falls. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Phoenix to Idaho Falls. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Idaho Falls from Phoenix?

What are the cheapest airlines flying from Phoenix to Idaho Falls round-trip?

Can I find deals for flights from Phoenix to Idaho Falls that include hotel bookings?

How can I find direct flights from Phoenix to Idaho Falls?

Can I find deals for business class flights from Phoenix to Idaho Falls?

What is the cheapest month to book a flight from Phoenix to Idaho Falls?

Traveling to a place near Idaho Falls?

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Alternative routes for Phoenix to Idaho Falls

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Top 4 airlines flying from Phoenix to Idaho Falls

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Cheapest flights from Phoenix to Idaho Falls
Explore the most affordable flight options available from Phoenix to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2025.