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Idaho Falls

$221+ Cheap flights from Philadelphia to Idaho Falls (PHL - 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — IDA
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
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Cheap flight deals from Philadelphia to Idaho Falls

Cheapest flights from Philadelphia to Idaho Falls
Explore the most affordable flight options available from Philadelphia to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.

This Alaska Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:45 am
PHL
-
IDA
1 stop10h 44m
Alaska Airlines
Wed 11/116:15 am
IDA
-
PHL
1 stop8h 41m
Alaska Airlines
Deal found 3/8$329
This United Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/29:55 am
PHL
-
IDA
1 stop7h 48m
United Airlines
Sat 5/92:31 pm
IDA
-
PHL
1 stop7h 12m
United Airlines
Deal found 3/9$349
This Expedia deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:47 pm
PHL
-
IDA
1 stop23h 32m
Alaska Airlines
Fri 4/244:06 pm
IDA
-
PHL
1 stop11h 56m
Alaska Airlines
Deal found 3/6$354
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:43 am
PHL
-
IDA
1 stop10h 44m
Multiple Airlines
Fri 4/2410:21 pm
IDA
-
PHL
2 stops29h 14m
Multiple Airlines
Deal found 3/6$377
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/217:00 am
PHL
-
IDA
1 stop7h 27m
Delta
Wed 3/256:55 pm
IDA
-
PHL
1 stop8h 46m
Delta
Deal found 3/6$379
This American Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:00 am
PHL
-
IDA
1 stop8h 10m
American Airlines
Fri 9/111:44 pm
IDA
-
PHL
1 stop8h 15m
American Airlines
Deal found 3/5$390
This American Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/183:58 pm
PHL
-
IDA
1 stop9h 41m
American Airlines
Sat 4/257:48 am
IDA
-
PHL
2 stops12h 59m
American Airlines
Deal found 3/9$395
This Delta deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/186:05 pm
PHL
-
IDA
1 stop6h 35m
Delta
Sat 4/256:58 pm
IDA
-
PHL
1 stop9h 01m
Delta
Deal found 3/9$404
This American Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/195:00 am
PHL
-
IDA
1 stop9h 16m
American Airlines
Tue 8/251:00 pm
IDA
-
PHL
1 stop9h 38m
American Airlines
Deal found 3/6$415
This Alaska Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:22 am
PHL
-
IDA
1 stop10h 07m
Alaska Airlines
Sat 5/26:00 am
IDA
-
PHL
1 stop22h 02m
Alaska Airlines
Deal found 3/5$416
This Delta deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/311:42 am
PHL
-
IDA
2 stops8h 33m
Delta
Mon 4/66:55 pm
IDA
-
PHL
1 stop8h 46m
Delta
Deal found 3/8$419

Find flight deals from Philadelphia to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Idaho Falls (IDA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$354
(Expedia)

One-way from

$221
(United Airlines)

Popular in

April

Cheapest in

May

Average price

$469
Provider with most accurate pricing for Philadelphia-Idaho Falls Fanning Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Idaho Falls Fanning Field flights.
Search Deals
From Philadelphia to Idaho Falls Fanning Field
Search Deals
One-way flight from Philadelphia to Idaho Falls Fanning Field
Search Deals
High demand for flights, 2% potential price rise
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Idaho Falls that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 10, 2026.
Use the filters below to find and compare flights from Philadelphia to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Sat 5/2

9:55 am-3:43 pm

1 stop7h 48m

Idaho Falls Fanning Field

Sat 5/9

2:31 pm-11:43 pm

1 stop7h 12m

$349

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Sat 4/18

3:58 pm-11:39 pm

1 stop9h 41m

Idaho Falls Fanning Field

Sat 4/25

7:48 am-10:47 pm

2 stops12h 59m

$395

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Sat 4/18

6:05 pm-10:40 pm

1 stop6h 35m

Idaho Falls Fanning Field

Sat 4/25

6:58 pm-5:59 am

1 stop9h 01m

$404

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Tue 4/28

7:22 am-3:29 pm

1 stop10h 07m

Idaho Falls Fanning Field

Sat 5/2

6:00 am-6:02 am

1 stop22h 02m

$416

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Tue 4/28

10:00 am-9:04 pm

2 stops13h 04m

Idaho Falls Fanning Field

Sat 5/2

2:31 pm-11:43 pm

1 stop7h 12m

$424

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Wed 8/19

7:00 am-2:27 pm

1 stop9h 27m

Idaho Falls Fanning Field

Tue 8/25

6:50 pm-5:43 am

1 stop8h 53m

$450

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Wed 5/20

8:00 am-1:25 pm

1 stop7h 25m

Idaho Falls Fanning Field

Sun 5/24

10:35 am-12:45 am

2 stops12h 10m

$454
Cheapest one-way
Quickest one-way

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Wed 5/6

8:00 am-1:25 pm

1 stop7h 25m

$221

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Wed 5/6

9:00 pm-3:27 pm

3 stops44h 27m

$224

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Wed 5/6

2:59 pm-10:40 pm

2 stops9h 41m

$226

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/8

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from Philadelphia to Idaho Falls

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Idaho Falls in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-Idaho Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Idaho Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Idaho Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Idaho Falls flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Idaho Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Philadelphia to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from Philadelphia 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 Philadelphia to Idaho Falls

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

Currently, October is the cheapest month in which you can book a flight from Philadelphia to Idaho Falls (average of $138). Flying from Philadelphia to Idaho Falls in December is currently the most expensive (average of $386). 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.

Reviews of airlines servicing Idaho Falls

Get insights into the airlines that provide service to Idaho Falls. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho Falls. Reviews last updated March 10, 2026.
Read through reviews of airlines operating flights from Philadelphia to Idaho Falls, such as Delta,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,276 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Boarding

8.1

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,276 reviews
Delta
7.9
Good
8,276 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Boarding

8.1

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,409 reviews
Delta
7.9
Good
8,276 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Boarding

8.1

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.1
Good
11,413 reviews
Delta
7.9
Good
8,276 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Boarding

8.1

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

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

  • How long is the flight from Philadelphia to Idaho Falls?

    A quick flight from Philadelphia to Idaho Falls can take about 6h 35m. United Airlines provides one of the quickest options available for as low as $404. There are 1899 mi between Philadelphia and Idaho Falls. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Cheapflights users have booked flights from Philadelphia to Idaho Falls round-trip from $199. Other airlines that can offer you cheap pricing are United Airlines, from $379, and American Airlines, from $398. You may be able to fly from Philadelphia to Idaho Falls for 66% less than the average price by searching for these airlines.

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

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

  • How can I find direct flights from Philadelphia to Idaho Falls?

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

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

    Yes. Cheapflights offers flight deals from Philadelphia 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 Philadelphia to Idaho Falls?

    Currently, October is the cheapest month in which you can book a flight from Philadelphia to Idaho Falls (average of $138). Flying from Philadelphia to Idaho Falls in December is currently the most expensive (average of $386). 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

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

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Top 3 airlines flying from Philadelphia to Idaho Falls

Discover the top 3 airlines that operate flights from Philadelphia to Idaho Falls. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$199Average$513FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$379Average$657FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$398Average$549FlexibilityNo cancel feeOn-time71%

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