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Idaho Falls

$182+ 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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — IDA
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap 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 July 29, 2025.

Round-trip from

$399
(American Airlines)

One-way from

$182
(Mytrip)

Popular in

May

Cheapest in

February

Average price

$704
From Philadelphia to Idaho Falls Fanning Field
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One-way flight from Philadelphia to Idaho Falls Fanning Field
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Highest demand for flights based on searches. 21% potential increase in price ($183 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 July 29, 2025.

This Alaska Airlines deal was found by Cheapflights users on 7/29. 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.
Wed 10/297:12 pmPHL - IDA
1 stop22h 01mAlaska Airlines
Sun 11/93:50 pmIDA - PHL
1 stop11h 52mAlaska Airlines
Deal found 7/29$398
This American Airlines deal was found by Cheapflights users on 7/27. 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.
Thu 10/305:00 amPHL - IDA
1 stop9h 41mAmerican Airlines
Sat 11/16:44 amIDA - PHL
1 stop8h 41mAmerican Airlines
Deal found 7/27$399
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/227:00 amPHL - IDA
2 stops17h 00mMultiple Airlines
Fri 8/2910:46 pmIDA - PHL
2 stops20h 03mMultiple Airlines
Deal found 7/29$423
This Delta deal was found by Cheapflights users on 7/26. 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 9/137:00 amPHL - IDA
1 stop7h 26mDelta
Tue 9/236:51 pmIDA - PHL
2 stops12h 34mDelta
Deal found 7/26$434
This United Airlines deal was found by Cheapflights users on 7/26. 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 9/1310:10 amPHL - IDA
2 stops12h 44mUnited Airlines
Tue 9/235:00 amIDA - PHL
2 stops10h 21mUnited Airlines
Deal found 7/26$499

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 July 29, 2025.
Use the filters below to find and compare flights from Philadelphia to Idaho Falls that are best for you.

Fly from

Philadelphia

Fly to

Idaho Falls

Route

Depart

Return

Price

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Wed 9/3

7:20 am-12:24 pm

1 stop7h 04m

Idaho Falls Fanning Field

Tue 9/9

12:54 pm-10:00 pm

1 stop7h 06m

$399

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Fri 8/22

7:00 am-10:00 pm

2 stops17h 00m

Idaho Falls Fanning Field

Fri 8/29

10:46 pm-8:49 pm

2 stops20h 03m

$423

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Sat 9/13

7:00 am-12:26 pm

1 stop7h 26m

Idaho Falls Fanning Field

Tue 9/23

6:51 pm-9:25 am

2 stops12h 34m

$434

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Sat 9/13

10:10 am-8:54 pm

2 stops12h 44m

Idaho Falls Fanning Field

Tue 9/23

5:00 am-5:21 pm

2 stops10h 21m

$499

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Thu 9/25

6:57 pm-3:20 pm

1 stop22h 23m

Idaho Falls Fanning Field

Sun 9/28

6:13 am-6:02 am

1 stop21h 49m

$511

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Thu 10/2

6:46 pm-4:14 pm

2 stops23h 28m

$182

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Thu 10/2

7:22 am-3:20 pm

1 stop9h 58m

$199

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Wed 8/27

1:20 pm-9:18 pm

1 stop9h 58m

$200

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Mon 9/15

6:57 pm-3:20 pm

1 stop22h 23m

$205

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Sat 8/9

9:39 am-6:11 pm

2 stops10h 32m

$315

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 11 results
1
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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 $380). Flying from Philadelphia 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.

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 July 29, 2025.
Read through reviews of airlines operating flights from Philadelphia to Idaho Falls, such as Alaska Airlines, Delta, and Hawaiian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,979 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,605 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.

  • 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 $399. Other airlines that can offer you cheap pricing are Delta, from $434, and United Airlines, from $499. You may be able to fly from Philadelphia to Idaho Falls for 40% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Philadelphia to Idaho Falls one-way?

    The cheapest airline one-way is Hawaiian Airlines, with whom users have recently found tickets for as low as $199. However, be on the lookout for offers from American Airlines and Alaska Airlines, as they are both options that can get you from Philadelphia to Idaho Falls for a low price.

  • 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 $380). Flying from Philadelphia 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

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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Alternative routes for Philadelphia to Idaho Falls

See prices for flight routes from nearby airports that may be better suited for you.
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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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$324Average$663FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$398Average$604FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$496Average$943FlexibilityNo cancel feeOn-time69%

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