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$316+ 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 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — PHL
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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Find 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 October 22, 2025.

This Alaska Airlines deal was found by Cheapflights users on 10/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/123:50 pmIDA - PHL
1 stop11h 52mAlaska Airlines
Mon 11/177:12 pmPHL - IDA
1 stop22h 01mAlaska Airlines
Deal found 10/20$468
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Wed 11/1210:50 amIDA - PHL
2 stops10h 13mUnited Airlines
Mon 11/1712:40 pmPHL - IDA
2 stops12h 12mUnited Airlines
Deal found 10/21$568
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Tue 11/255:00 amIDA - PHL
2 stops12h 05mUnited Airlines
Mon 12/18:00 pmPHL - IDA
2 stops19h 34mUnited Airlines
Deal found 10/21$825
This American Airlines deal was found by Cheapflights users on 10/20. 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 11/257:10 amIDA - PHL
1 stop10h 42mAmerican Airlines
Mon 12/16:45 pmPHL - IDA
1 stop20h 42mAmerican Airlines
Deal found 10/20$849

Cheap 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 October 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$463
(Delta)

One-way from

$316
(American Airlines)

Popular in

September

Cheapest in

April

Average price

$749
Provider with most accurate pricing for Idaho Falls Fanning Field-Philadelphia flight deals.
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Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-Philadelphia flights.
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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. 26% potential increase in price ($265 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 13% potential price decrease ($90 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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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 October 22, 2025.
Use the filters below to find and compare flights from Idaho Falls to Philadelphia that are best for you.

Fly from

Idaho Falls

Fly to

Philadelphia

Route

Depart

Return

Price

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Tue 3/31

6:45 pm-5:39 am

1 stop8h 54m

Philadelphia

Wed 4/1

1:00 pm-10:21 pm

2 stops11h 21m

$463

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Wed 11/12

3:50 pm-5:42 am

1 stop11h 52m

Philadelphia

Mon 11/17

7:12 pm-3:13 pm

1 stop22h 01m

$468

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Sat 4/4

4:00 pm-5:23 am

1 stop11h 23m

Philadelphia

Tue 4/7

7:00 am-3:20 pm

1 stop10h 20m

$469

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Wed 11/12

10:50 am-11:03 pm

2 stops10h 13m

Philadelphia

Mon 11/17

12:40 pm-10:52 pm

2 stops12h 12m

$568

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Tue 11/25

7:10 am-7:52 pm

1 stop10h 42m

$316

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Tue 11/25

10:50 am-11:03 pm

2 stops10h 13m

$401

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Tue 11/25

6:47 pm-11:25 pm

3 stops50h 38m

$533

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/19

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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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, September is the cheapest month in which you can book a flight from Idaho Falls to Philadelphia (average of $180). Flying from Idaho Falls to Philadelphia in May is currently the most expensive (average of $516). 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 IDA to PHL?

Find hourly flight availability from Idaho Falls to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 22, 2025.

A simple way to save on the total cost of your ticket is to fly from Idaho Falls to Philadelphia in the evening. If you’re flexible enough to do this you can expect to save up to 46% on your trip compared to booking a flight in the morning.

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

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 October 22, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American 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
7,981 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,981 reviews
Delta
7.9
Good
7,981 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,988 reviews
Delta
7.9
Good
7,981 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,029 reviews
Delta
7.9
Good
7,981 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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 Alaska Airlines fly from Idaho Falls to Philadelphia in about 8h 54m. The time it takes to get you to your destination can typically vary by up to 2h 58m. 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 American Airlines and United Airlines - these airlines can fly you to your destination from $475 and $587, respectively. These flights start at 65% lower than the current average price 3 months from now.

  • 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, September is the cheapest month in which you can book a flight from Idaho Falls to Philadelphia (average of $180). Flying from Idaho Falls to Philadelphia in May is currently the most expensive (average of $516). 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
King of Prussia
Pottstown
Reading
Ocean City
Cherry Hill
Dewey Beach
Ephrata
Camden
Vineland
Milford
Dover
Elkton
Essington
Willow Grove
Newark
Millville
Chester
Exton
Havre de Grace

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Alternative routes for Idaho Falls to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
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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 October 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$259Average$488FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$475Average$595FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$587Average$948FlexibilityNo cancel feeOn-time69%

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