$230+ Cheap flights from Idaho Falls to Philadelphia (IDA - PHL)
This is the cheapest round-trip 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.
IDA — PHL
Oct 15 — Oct 221
Round-trip
1 adult, Economy
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Find cheap flights from Idaho Falls to Philadelphia with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Idaho Falls to Philadelphia
Cheapest
Best
Last-minute
One-way
Cheapest flights from Idaho Falls to PhiladelphiaExplore 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 September 15, 2026.
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 September 15, 2026.
This United Airlines deal was found by Cheapflights users on 9/10. 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 11/72:35 pm -
1 stop7h 04m
Wed 11/117:45 am -
1 stop7h 43m
Deal found 9/10![United Airlines logo]()
$459
This Alaska Airlines deal was found by Cheapflights users on 9/13. 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.
Fri 10/23:57 pm -
1 stop21h 17m
Mon 10/56:41 pm -
1 stop22h 39m
Deal found 9/13![Alaska Airlines logo]()
$504
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Mon 12/215:50 pm -
1 stop9h 20m
Wed 12/308:10 am -
2 stops11h 10m
Deal found 9/14![American Airlines logo]()
$563
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Fri 10/212:15 pm -
1 stop9h 06m
Mon 10/55:00 am -
1 stop10h 09m
Deal found 9/11![American Airlines logo]()
$570
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Mon 12/217:00 am -
2 stops8h 44m
Wed 12/306:24 am -
2 stops11h 14m
Deal found 9/14![United Airlines logo]()
$648
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 10/22:28 pm -
1 stop6h 52m
Mon 10/57:30 pm -
2 stops19h 54m
Deal found 9/10![United Airlines logo]()
$649
Best flights from Idaho Falls to PhiladelphiaDiscover carefully curated flight deals from Idaho Falls to Philadelphia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
Discover carefully curated flight deals from Idaho Falls to Philadelphia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
This United Airlines deal was found by Cheapflights users on 9/10. 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 11/72:35 pm -
1 stop7h 04m
Wed 11/117:45 am -
1 stop7h 43m
Deal found 9/10![United Airlines logo]()
$459
Last-minute flights from Idaho Falls to PhiladelphiaDiscover last-minute flight deals from Idaho Falls to Philadelphia. Data last updated September 15, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho Falls to Philadelphia. Data last updated September 15, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 10/23:57 pm -
1 stop21h 17m
Mon 10/54:17 pm -
1 stop23h 04m
Deal found 9/10![Alaska Airlines logo]()
$479
This American Airlines deal was found by Cheapflights users on 9/12. 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.
Fri 10/21:58 pm -
1 stop6h 50m
Mon 10/55:43 am -
1 stop9h 37m
Deal found 9/12![American Airlines logo]()
$524
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 10/22:28 pm -
1 stop6h 52m
Mon 10/57:30 pm -
2 stops19h 54m
Deal found 9/10![United Airlines logo]()
$649
This Delta deal was found by Cheapflights users on 9/12. 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 10/26:57 pm -
1 stop9h 08m
Mon 10/57:05 am -
2 stops13h 12m
Deal found 9/12![Delta logo]()
$686
One-way flights from Idaho Falls to PhiladelphiaSearch for one-way flight options from Idaho Falls to Philadelphia. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
Search for one-way flight options from Idaho Falls to Philadelphia. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
This Expedia deal was found by Cheapflights users on 9/14. 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.
Fri 10/23:57 pm -
1 stop21h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Alaska Airlines logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Fri 10/910:49 pm -
1 stop30h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Multiple Airlines logo]()
$258
This Delta deal was found by Cheapflights users on 9/13. 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 10/116:56 pm -
1 stop9h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Delta logo]()
$353
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Fri 10/29:52 am -
2 stops46h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Allegiant Air logo]()
$361
This American Airlines deal was found by Cheapflights users on 9/11. 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 9/302:08 pm -
1 stop8h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![American Airlines logo]()
$401
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Fri 10/210:49 pm -
3 stops30h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Multiple Airlines logo]()
$453
This United Airlines deal was found by Cheapflights users on 9/11. 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 9/307:00 am -
2 stops10h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![United Airlines logo]()
$493
This deal was found by Cheapflights users on 9/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:35 am -
1 stop6h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$510
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Sun 10/1110:02 am -
3 stops43h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Multiple Airlines logo]()
$605
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 September 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $459 (United Airlines) |
One-way from | $230 (Expedia) |
Popular in | October |
Cheapest in | April |
Average price | $643 |
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 7,457,451 searches. Data last updated September 15, 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
Cheapest round-trip
Idaho FallsPhiladelphia
IDA Idaho Falls Fanning Field - PHL Philadelphia
IDAPHL
Idaho Falls Fanning Field
Fri 10/9
10:49 pm-11:11 pm
2 stops22h 22m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$280
Idaho FallsPhiladelphia
IDA Idaho Falls Fanning Field - PHL Philadelphia
IDAPHL
Idaho Falls Fanning Field
Sun 10/11
6:56 pm-6:05 am
1 stop9h 09m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$353
Idaho FallsPhiladelphia
IDA Idaho Falls Fanning Field - PHL Philadelphia
IDAPHL
Idaho Falls Fanning Field
Wed 9/30
2:08 pm-12:22 am
1 stop8h 14m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$401
Idaho FallsPhiladelphia
IDA Idaho Falls Fanning Field - PHL Philadelphia
IDAPHL
Idaho Falls Fanning Field
Fri 10/2
10:49 pm-7:16 am
3 stops30h 27m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$453
Idaho FallsPhiladelphia
IDA Idaho Falls Fanning Field - PHL Philadelphia
IDAPHL
Idaho Falls Fanning Field
Sat 11/7
2:35 pm-11:39 pm
1 stop7h 04m
Philadelphia
Wed 11/11
7:45 am-1:28 pm
1 stop7h 43m
$459
Idaho FallsPhiladelphia
IDA Idaho Falls Fanning Field - PHL Philadelphia
IDAPHL
Idaho Falls Fanning Field
Wed 9/30
7:00 am-7:42 pm
2 stops10h 42m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$493
Quickest round-trip
Idaho FallsPhiladelphia
IDA Idaho Falls Fanning Field - PHL Philadelphia
IDAPHL
Idaho Falls Fanning Field
Thu 10/1
10:35 am-7:33 pm
1 stop6h 58m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$510
Idaho FallsPhiladelphia
IDA Idaho Falls Fanning Field - PHL Philadelphia
IDAPHL
Idaho Falls Fanning Field
Wed 9/30
3:57 pm-11:18 pm
3 stops53h 21m
Philadelphia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$634
Sorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
IDA-PHL
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
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 September 15, 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.
Crew
8.5
Boarding
8.1
Entertainment
7.8
Overall
7.8
Food
7.2
Comfort
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Crew
8.5
Boarding
8.1
Entertainment
7.8
Overall
7.8
Food
7.2
Comfort
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Crew
8.5
Boarding
8.1
Entertainment
7.8
Overall
7.8
Food
7.2
Comfort
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Crew
8.5
Boarding
8.1
Entertainment
7.8
Overall
7.8
Food
7.2
Comfort
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
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.
Traveling to a place near Philadelphia?
Book flights to Philadelphia if you plan to visit one of these locationsWildwood
Reading
King of Prussia
Camden
Wildwood Crest
Cherry Hill
Ocean City
Lewes
Plymouth Meeting
Wyomissing
Pottstown
Ephrata
Milford
Dover
Elkton
Essington
Willow Grove
New Castle
Vineland
Millville
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Idaho Falls and Philadelphia flights
Browse other Idaho Falls and Philadelphia flight options. Last updated on September 15, 2026.
Other flights from Idaho Falls
Browse through other flights departing from Idaho Falls. Flights are based on user searches made on Cheapflights and were last updated on September 15, 2026.
Other flights to Philadelphia
Explore flights to Philadelphia departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 15, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated September 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$354 | Average$419 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$418 | Average$1,158 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$508 | Average$665 | FlexibilityNo cancel fee | On-time71% |