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$241+ Cheap flights from Idaho Falls to Philadelphia (IDA - PHL)

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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — PHL
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
1 adult, Economy
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Cheap flight deals from Idaho Falls to Philadelphia

Cheapest flights from Idaho Falls to Philadelphia
Explore the most affordable flight options available from Idaho Falls to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 23, 2026.

This Delta deal was found by Cheapflights users on 3/18. 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.
Sun 5/176:54 pm
IDA
-
PHL
1 stop9h 16m
Delta
Thu 5/287:25 am
PHL
-
IDA
1 stop9h 09m
Delta
Deal found 3/18$349
This Delta deal was found by Cheapflights users on 3/18. 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.
Tue 5/196:00 am
IDA
-
PHL
2 stops11h 27m
Delta
Thu 5/287:25 am
PHL
-
IDA
1 stop9h 09m
Delta
Deal found 3/18$354
This American Airlines deal was found by Cheapflights users on 3/20. 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.
Tue 5/197:48 am
IDA
-
PHL
1 stop10h 13m
American Airlines
Tue 5/265:18 am
PHL
-
IDA
1 stop10h 20m
American Airlines
Deal found 3/20$359
This Delta deal was found by Cheapflights users on 3/18. 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.
Wed 5/2011:30 am
IDA
-
PHL
2 stops9h 42m
Delta
Thu 5/287:25 am
PHL
-
IDA
1 stop9h 09m
Delta
Deal found 3/18$364
This Expedia deal was found by Cheapflights users on 3/20. 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.
Sat 10/106:15 am
IDA
-
PHL
1 stop8h 41m
Alaska Airlines
Tue 10/135:15 pm
PHL
-
IDA
1 stop23h 12m
Alaska Airlines
Deal found 3/20$369
This Delta deal was found by Cheapflights users on 3/18. 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.
Sun 5/176:54 pm
IDA
-
PHL
1 stop9h 16m
Delta
Sun 5/247:25 am
PHL
-
IDA
1 stop9h 09m
Delta
Deal found 3/18$384
This Delta deal was found by Cheapflights users on 3/18. 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.
Tue 5/196:00 am
IDA
-
PHL
2 stops11h 27m
Delta
Sun 5/247:25 am
PHL
-
IDA
1 stop9h 09m
Delta
Deal found 3/18$389
This Delta deal was found by Cheapflights users on 3/18. 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.
Wed 5/2011:30 am
IDA
-
PHL
2 stops9h 42m
Delta
Sun 5/247:25 am
PHL
-
IDA
1 stop9h 09m
Delta
Deal found 3/18$399
This Expedia deal was found by Cheapflights users on 3/22. 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.
Sat 4/254:06 pm
IDA
-
PHL
1 stop11h 56m
Alaska Airlines
Mon 5/46:58 pm
PHL
-
IDA
1 stop22h 31m
Alaska Airlines
Deal found 3/22$414
This Delta deal was found by Cheapflights users on 3/22. 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 4/256:58 pm
IDA
-
PHL
1 stop9h 01m
Delta
Mon 5/42:59 pm
PHL
-
IDA
2 stops9h 41m
Delta
Deal found 3/22$419

Find flight deals from Idaho Falls to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Idaho Falls (IDA) to Philadelphia (PHL). 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 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$349
(Delta)

One-way from

$241
(Delta)

Popular in

September

Cheapest in

April

Average price

$793
Provider with most accurate pricing for Idaho Falls Fanning Field-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-Philadelphia flights.
Search Deals
From Idaho Falls Fanning Field to Philadelphia
Search Deals
One-way flight from Idaho Falls Fanning Field to Philadelphia
Search Deals
Highest demand for flights based on searches. 28% potential increase in price ($292 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 14% potential price decrease ($92 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 Idaho Falls to Philadelphia 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 23, 2026.
Use the filters below to find and compare flights from Idaho Falls to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Sat 4/25

6:58 pm-5:59 am

1 stop9h 01m

Philadelphia

Mon 5/4

2:59 pm-10:40 pm

2 stops9h 41m

$419

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Wed 5/20

6:54 pm-6:10 am

1 stop9h 16m

Philadelphia

Tue 5/26

7:25 am-2:34 pm

1 stop9h 09m

$471

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Thu 5/21

6:54 pm-6:10 am

1 stop9h 16m

Philadelphia

Mon 5/25

7:25 am-10:42 pm

1 stop17h 17m

$506

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Tue 5/19

6:00 am-7:27 pm

2 stops11h 27m

Philadelphia

Sun 5/24

8:05 am-10:42 pm

2 stops16h 37m

$518

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Tue 5/19

7:48 am-12:11 am

2 stops14h 23m

Philadelphia

Tue 5/26

12:07 pm-10:15 pm

2 stops12h 08m

$534
Quickest round-trip

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Sat 8/1

7:00 pm-6:13 am

1 stop9h 13m

Philadelphia

Sat 8/8

5:00 pm-10:32 pm

1 stop7h 32m

$547

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Wed 7/22

4:14 pm-3:23 pm

1 stop21h 09m

Philadelphia

Sun 8/2

5:43 pm-1:06 pm

1 stop21h 23m

$609

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Tue 8/25

4:10 pm-9:46 am

2 stops15h 36m

Philadelphia

Sat 8/29

10:00 am-3:29 pm

1 stop7h 29m

$613

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Sat 8/1

1:54 pm-12:35 am

1 stop8h 41m

Philadelphia

Sat 8/8

12:04 pm-9:22 pm

2 stops11h 18m

$626
Cheapest one-way
Quickest one-way

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Sun 4/12

6:55 pm-5:41 am

1 stop8h 46m

$285

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/18

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Compare providers for flights from Idaho Falls to Philadelphia

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 Idaho Falls to Philadelphia 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 Idaho Falls-Philadelphia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Idaho Falls-Philadelphia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Idaho Falls-Philadelphia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Idaho Falls-Philadelphia 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 Idaho Falls-Philadelphia 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 Idaho Falls to Philadelphia

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

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

Currently, December is the cheapest month in which you can book a flight from Idaho Falls to Philadelphia (average of $102). Flying from Idaho Falls to Philadelphia in February is currently the most expensive (average of $373). 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 Philadelphia

Get insights into the airlines that provide service to Philadelphia. 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 Philadelphia. Reviews last updated March 23, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andAmerican Airlines from Idaho Falls to Philadelphia. 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
7.9
Good
8,319 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

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
8,319 reviews
Delta
7.9
Good
8,319 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

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
9,460 reviews
Delta
7.9
Good
8,319 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

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
11,489 reviews
Delta
7.9
Good
8,319 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

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 Idaho Falls to Philadelphia. 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 Idaho Falls to Philadelphia?

    Airlines like Delta and American Airlines fly from Idaho Falls to Philadelphia in about 9h 01m. The time it takes to get you to your destination can typically vary by up to 5h 22m. Airlines will cover a distance of 1899 mi. This flight may include one or multiple stops.

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

    Currently priced at $259, Delta will fly you from Idaho Falls to Philadelphia and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and American Airlines - these airlines can fly you to your destination from $418 and $475, respectively. These flights start at 63% lower than the current average price 3 months from now.

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

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $199. Users have also found prices from $199 and $244 on Delta and United Airlines, respectively.

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

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from Idaho Falls to Philadelphia (average of $102). Flying from Idaho Falls to Philadelphia in February is currently the most expensive (average of $373). 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 Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood
Reading
King of Prussia
Camden
Ocean City
Lewes
Dewey Beach
Pottstown
Ephrata
Vineland
Milford
Cherry Hill
Dover
Elkton
Essington
Willow Grove
New Castle
Millville
Glen Mills
Chester

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Idaho Falls to Philadelphia

Discover the top 3 airlines that operate flights from Idaho Falls to Philadelphia. 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 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$259Average$419FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$418Average$846FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$475Average$595FlexibilityNo cancel feeOn-time71%

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