$168+ 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — IDA
Aug 22 — Aug 291
Round-trip
1 adult, Economy
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Find cheap flights from Philadelphia to Idaho Falls 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 Philadelphia to Idaho Falls
Cheapest
Best
Last-minute
One-way
Cheapest flights from Philadelphia to Idaho FallsExplore 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 23, 2026.
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 23, 2026.
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:20 am
PHL
- IDA
1 stop9h 15m
Delta
Mon 8/317:00 pm
IDA
- PHL
1 stop9h 05m
Delta
Deal found 7/20![Delta logo]()
$349
This Delta deal was found by Cheapflights users on 7/19. 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 9/137:20 am
PHL
- IDA
1 stop6h 55m
Delta
Fri 9/256:57 pm
IDA
- PHL
1 stop9h 08m
Delta
Deal found 7/19![Delta logo]()
$374
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:20 am
PHL
- IDA
1 stop9h 15m
Delta
Sat 9/126:00 am
IDA
- PHL
2 stops9h 59m
Delta
Deal found 7/20![Delta logo]()
$389
This Delta deal was found by Cheapflights users on 7/23. 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 12/59:42 am
PHL
- IDA
2 stops10h 32m
Delta
Sat 12/121:10 pm
IDA
- PHL
2 stops9h 41m
Delta
Deal found 7/23![Delta logo]()
$404
This American Airlines deal was found by Cheapflights users on 7/20. 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.
Sat 8/223:06 pm
PHL
- IDA
1 stop8h 14m
American Airlines
Sat 8/291:43 pm
IDA
- PHL
1 stop8h 16m
American Airlines
Deal found 7/20![American Airlines logo]()
$410
This United Airlines deal was found by Cheapflights users on 7/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:25 am
PHL
- IDA
2 stops9h 06m
United Airlines
Thu 11/2610:35 am
IDA
- PHL
2 stops10h 45m
United Airlines
Deal found 7/20![United Airlines logo]()
$418
Best flights from Philadelphia to Idaho FallsDiscover carefully curated flight deals from Philadelphia to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 23, 2026.
Discover carefully curated flight deals from Philadelphia to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 23, 2026.
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:20 am
PHL
- IDA
1 stop9h 15m
Delta
Mon 8/317:00 pm
IDA
- PHL
1 stop9h 05m
Delta
Deal found 7/20![Delta logo]()
$349
This American Airlines deal was found by Cheapflights users on 7/23. 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 8/275:43 am
PHL
- IDA
1 stop9h 26m
American Airlines
Mon 8/311:43 pm
IDA
- PHL
1 stop8h 16m
American Airlines
Deal found 7/23![American Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:20 am
PHL
- IDA
1 stop6h 55m
Delta
Fri 9/256:57 pm
IDA
- PHL
2 stops13h 17m
Delta
Deal found 7/20![Delta logo]()
$354
This Delta deal was found by Cheapflights users on 7/23. 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 12/57:00 am
PHL
- IDA
1 stop7h 27m
Delta
Sat 12/121:10 pm
IDA
- PHL
2 stops9h 41m
Delta
Deal found 7/23![Delta logo]()
$364
This Delta deal was found by Cheapflights users on 7/23. 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 8/2212:26 pm
PHL
- IDA
2 stops12h 06m
Delta
Sat 8/2911:35 am
IDA
- PHL
2 stops11h 44m
Delta
Deal found 7/23![Delta logo]()
$439
This Delta deal was found by Cheapflights users on 7/22. 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.
Wed 8/1912:36 pm
PHL
- IDA
2 stops11h 56m
Delta
Tue 8/257:00 pm
IDA
- PHL
2 stops12h 38m
Delta
Deal found 7/22![Delta logo]()
$464
Last-minute flights from Philadelphia to Idaho FallsDiscover last-minute flight deals from Philadelphia to Idaho Falls. Data last updated July 23, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Idaho Falls. Data last updated July 23, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:20 am
PHL
- IDA
1 stop9h 15m
Delta
Tue 8/187:00 pm
IDA
- PHL
2 stops12h 38m
Delta
Deal found 7/20![Delta logo]()
$419
This Delta deal was found by Cheapflights users on 7/19. 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.
Thu 8/135:45 am
PHL
- IDA
2 stops10h 50m
Delta
Mon 8/177:00 pm
IDA
- PHL
1 stop9h 05m
Delta
Deal found 7/19![Delta logo]()
$429
This American Airlines deal was found by Cheapflights users on 7/20. 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.
Sat 8/223:06 pm
PHL
- IDA
1 stop8h 14m
American Airlines
Sat 8/291:43 pm
IDA
- PHL
1 stop8h 16m
American Airlines
Deal found 7/20![American Airlines logo]()
$410
This Delta deal was found by Cheapflights users on 7/22. 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 8/2212:26 pm
PHL
- IDA
2 stops12h 06m
Delta
Sat 8/2911:35 am
IDA
- PHL
2 stops11h 44m
Delta
Deal found 7/22![Delta logo]()
$434
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:20 am
PHL
- IDA
1 stop9h 15m
Delta
Mon 8/317:00 pm
IDA
- PHL
1 stop9h 05m
Delta
Deal found 7/20![Delta logo]()
$349
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:20 am
PHL
- IDA
1 stop9h 15m
Delta
Sat 9/126:00 am
IDA
- PHL
2 stops9h 59m
Delta
Deal found 7/20![Delta logo]()
$389
One-way flights from Philadelphia to Idaho FallsSearch for one-way flight options from Philadelphia to Idaho Falls. Find affordable one-way fares based on user searches. Data last updated July 23, 2026.
Search for one-way flight options from Philadelphia to Idaho Falls. Find affordable one-way fares based on user searches. Data last updated July 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/19. 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.
Wed 8/268:30 am
PHL
- IDA
3 stops51h 52m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$168
This Expedia deal was found by Cheapflights users on 7/19. 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.
Wed 8/267:02 am
PHL
- IDA
1 stop10h 18m
Alaska Airlines
Deal found 7/19![Alaska Airlines logo]()
$210
This Expedia deal was found by Cheapflights users on 7/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/254:48 pm
PHL
- IDA
1 stop22h 36m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/114:30 pm
PHL
- IDA
3 stops42h 28m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$246
This American Airlines deal was found by Cheapflights users on 7/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2512:57 pm
PHL
- IDA
1 stop10h 23m
American Airlines
Deal found 7/21![American Airlines logo]()
$268
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:10 am
PHL
- IDA
2 stops12h 10m
Delta
Deal found 7/20![Delta logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 7/19. 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.
Sat 8/158:24 pm
PHL
- IDA
2 stops45h 41m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$280
This United Airlines deal was found by Cheapflights users on 7/21. 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 8/258:20 am
PHL
- IDA
2 stops9h 03m
United Airlines
Deal found 7/21![United Airlines logo]()
$323
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 July 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $349 (Delta) |
One-way from | $168 (Kiwi.com) |
Popular in | October |
Cheapest in | March |
Average price | $649 |
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 23, 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
Cheapest round-trip
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Thu 8/27
7:20 am-2:35 pm
1 stop9h 15m
Idaho Falls Fanning Field
Mon 8/31
7:00 pm-6:05 am
1 stop9h 05m
$349
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Sun 9/13
7:20 am-12:15 pm
1 stop6h 55m
Idaho Falls Fanning Field
Fri 9/25
6:57 pm-10:14 am
2 stops13h 17m
$354
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Thu 8/27
5:43 am-1:09 pm
1 stop9h 26m
Idaho Falls Fanning Field
Mon 8/31
1:43 pm-11:59 pm
1 stop8h 16m
$359
Quickest round-trip
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Sat 12/5
7:00 am-12:27 pm
1 stop7h 27m
Idaho Falls Fanning Field
Sat 12/12
1:10 pm-12:51 am
2 stops9h 41m
$364
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Sat 8/22
12:26 pm-10:32 pm
2 stops12h 06m
Idaho Falls Fanning Field
Sat 8/29
11:35 am-1:19 am
2 stops11h 44m
$439
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Wed 8/19
12:36 pm-10:32 pm
2 stops11h 56m
Idaho Falls Fanning Field
Tue 8/25
7:00 pm-9:38 am
2 stops12h 38m
$464
Cheapest one-way
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Wed 8/26
8:30 am-10:22 am
3 stops51h 52m
$168
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Tue 8/11
7:33 am-3:37 pm
1 stop10h 04m
$210
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Wed 8/26
7:02 am-3:20 pm
1 stop10h 18m
$210
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Tue 8/25
4:48 pm-1:24 pm
1 stop22h 36m
$215
Showing 1-10 of 15 resultsSorted by cheapest first
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 July.
| 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 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.
PHL-IDA
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, March is the cheapest month in which you can book a flight from Philadelphia to Idaho Falls (average of $469). Flying from Philadelphia to Idaho Falls in October is currently the most expensive (average of $715). 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.
How much does it cost to fly round-trip from Philadelphia to Idaho Falls?
Airfare is below average for this route at the moment.
Philadelphia to Idaho Falls flights typically cost between $499 and $644 in August.The cheapest round-trip price found within the last 5 days was $349 on Delta (Aug 27-Aug 31).
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 23, 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.
Comfort
7.8
Overall
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Overall
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Overall
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Overall
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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.
Traveling to a place near Idaho Falls?
Book flights to Idaho Falls if you plan to visit one of these locationsRexburg
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Other flights to Idaho Falls
Explore flights to Idaho Falls departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 23, 2026.
Philadelphia and Idaho Falls flights
Browse other Philadelphia and Idaho Falls flight options. Last updated on July 23, 2026.
Other flights from Philadelphia
Browse through other flights departing from Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on July 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$354 | Average$508 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$379 | Average$575 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$449 | Average$564 | FlexibilityNo cancel fee | On-time71% |