$235+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — IDA
Jul 12 — Jul 191
Round-trip
1 adult, Economy
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Find cheap flights from Philadelphia to Idaho Falls with Cheapflights
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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
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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
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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 June 12, 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 June 12, 2026.
This Delta deal was found by Cheapflights users on 6/9. 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 8/2612:36 pm
PHL
- IDA
2 stops11h 56m
Delta
Tue 9/16:00 am
IDA
- PHL
2 stops9h 34m
Delta
Deal found 6/9![Delta logo]()
$359
This Delta deal was found by Cheapflights users on 6/8. 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 9/27:20 am
PHL
- IDA
1 stop9h 15m
Delta
Mon 9/77:10 pm
IDA
- PHL
1 stop8h 55m
Delta
Deal found 6/8![Delta logo]()
$374
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:05 am
PHL
- IDA
2 stops10h 30m
Delta
Mon 9/146:57 pm
IDA
- PHL
1 stop9h 08m
Delta
Deal found 6/10![Delta logo]()
$379
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
Sat 7/45:46 pm
PHL
- IDA
1 stop21h 20m
Alaska Airlines
Thu 7/94:14 pm
IDA
- PHL
1 stop21h 09m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$399
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Sat 8/226:25 am
PHL
- IDA
1 stop7h 13m
United Airlines
Sat 8/2912:33 pm
IDA
- PHL
1 stop6h 54m
United Airlines
Deal found 6/11![United Airlines logo]()
$410
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:07 pm
PHL
- IDA
2 stops18h 40m
Multiple Airlines
Fri 8/285:08 pm
IDA
- PHL
1 stop11h 12m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$424
This Delta deal was found by Cheapflights users on 6/7. 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 7/47:23 am
PHL
- IDA
1 stop9h 14m
Delta
Thu 7/97:00 pm
IDA
- PHL
1 stop9h 15m
Delta
Deal found 6/7![Delta logo]()
$439
This Delta deal was found by Cheapflights users on 6/9. 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 8/147:20 am
PHL
- IDA
1 stop9h 15m
Delta
Tue 8/187:00 pm
IDA
- PHL
2 stops14h 05m
Delta
Deal found 6/9![Delta logo]()
$447
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 June 12, 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 June 12, 2026.
This Delta deal was found by Cheapflights users on 6/7. 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 7/47:23 am
PHL
- IDA
1 stop9h 14m
Delta
Thu 7/97:00 pm
IDA
- PHL
1 stop9h 15m
Delta
Deal found 6/7![Delta logo]()
$439
This Alaska Airlines deal was found by Cheapflights users on 6/9. 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 7/297:33 am
PHL
- IDA
1 stop10h 04m
Alaska Airlines
Wed 8/51:43 pm
IDA
- PHL
1 stop14h 30m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$509
This United Airlines deal was found by Cheapflights users on 6/8. 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 8/226:16 am
PHL
- IDA
2 stops11h 07m
United Airlines
Fri 8/282:25 pm
IDA
- PHL
1 stop7h 20m
United Airlines
Deal found 6/8![United Airlines logo]()
$520
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/235:45 am
PHL
- IDA
2 stops10h 50m
Delta
Sun 8/307:00 pm
IDA
- PHL
1 stop9h 05m
Delta
Deal found 6/11![Delta logo]()
$499
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:02 am
PHL
- IDA
1 stop10h 18m
Alaska Airlines
Tue 9/16:18 am
IDA
- PHL
1 stop9h 38m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$509
This Delta deal was found by Cheapflights users on 6/12. 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.
Sat 8/225:46 am
PHL
- IDA
2 stops10h 49m
Delta
Fri 8/287:00 pm
IDA
- PHL
1 stop9h 05m
Delta
Deal found 6/12![Delta logo]()
$504
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/117:33 am
PHL
- IDA
1 stop10h 04m
Alaska Airlines
Thu 7/164:14 pm
IDA
- PHL
2 stops11h 59m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$527
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/117:33 am
PHL
- IDA
1 stop10h 04m
Alaska Airlines
Wed 7/154:14 pm
IDA
- PHL
2 stops11h 59m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$546
This Alaska Airlines deal was found by Cheapflights users on 6/8. 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 6/245:46 pm
PHL
- IDA
1 stop21h 20m
Alaska Airlines
Mon 7/274:14 pm
IDA
- PHL
1 stop21h 09m
Alaska Airlines
Deal found 6/8![Alaska Airlines logo]()
$577
Last-minute flights from Philadelphia to Idaho FallsDiscover last-minute flight deals from Philadelphia to Idaho Falls. Data last updated June 12, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Idaho Falls. Data last updated June 12, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/9. 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 6/307:23 am
PHL
- IDA
1 stop17h 08m
Delta
Fri 7/37:00 pm
IDA
- PHL
2 stops11h 44m
Delta
Deal found 6/9![Delta logo]()
$499
This Expedia deal was found by Cheapflights users on 6/9. 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 6/307:33 am
PHL
- IDA
1 stop17h 06m
Alaska Airlines
Sat 7/44:14 pm
IDA
- PHL
1 stop21h 09m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$502
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
Sat 7/45:46 pm
PHL
- IDA
1 stop21h 20m
Alaska Airlines
Thu 7/94:14 pm
IDA
- PHL
1 stop21h 09m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 6/7. 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 7/47:23 am
PHL
- IDA
1 stop9h 14m
Delta
Thu 7/97:00 pm
IDA
- PHL
1 stop9h 15m
Delta
Deal found 6/7![Delta logo]()
$439
This Delta deal was found by Cheapflights users on 6/8. 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 7/47:23 am
PHL
- IDA
1 stop9h 14m
Delta
Mon 7/137:00 pm
IDA
- PHL
1 stop9h 15m
Delta
Deal found 6/8![Delta logo]()
$489
This Delta deal was found by Cheapflights users on 6/8. 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.
Mon 7/67:23 am
PHL
- IDA
1 stop9h 14m
Delta
Mon 7/137:00 pm
IDA
- PHL
1 stop9h 15m
Delta
Deal found 6/8![Delta logo]()
$479
This Delta deal was found by Cheapflights users on 6/8. 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 7/85:40 am
PHL
- IDA
2 stops10h 56m
Delta
Thu 7/167:00 pm
IDA
- PHL
1 stop9h 15m
Delta
Deal found 6/8![Delta logo]()
$472
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/95:25 pm
PHL
- IDA
2 stops24h 35m
Multiple Airlines
Mon 7/1310:47 pm
IDA
- PHL
1 stop29h 13m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$491
This Expedia deal was found by Cheapflights users on 6/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/105:46 pm
PHL
- IDA
1 stop21h 20m
Alaska Airlines
Tue 7/147:15 am
IDA
- PHL
1 stop20h 58m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$449
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/117:33 am
PHL
- IDA
1 stop10h 04m
Alaska Airlines
Tue 7/147:15 am
IDA
- PHL
1 stop20h 58m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$492
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 June 12, 2026.
Search for one-way flight options from Philadelphia to Idaho Falls. Find affordable one-way fares based on user searches. Data last updated June 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/44:35 pm
PHL
- IDA
2 stops18h 20m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$235
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Sun 7/58:00 am
PHL
- IDA
1 stop7h 25m
United Airlines
Deal found 6/10![United Airlines logo]()
$276
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/235:45 am
PHL
- IDA
2 stops10h 50m
Delta
Deal found 6/11![Delta logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 6/248:00 am
PHL
- IDA
3 stops58h 08m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$295
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:23 am
PHL
- IDA
1 stop9h 14m
Delta
Deal found 6/10![Delta logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/58:37 pm
PHL
- IDA
2 stops21h 23m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$318
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/46:10 am
PHL
- IDA
2 stops9h 15m
United Airlines
Deal found 6/10![United Airlines logo]()
$330
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Sat 8/228:00 am
PHL
- IDA
1 stop9h 23m
United Airlines
Deal found 6/11![United Airlines logo]()
$338
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 June 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $359 (Delta) |
One-way from | $235 (Kiwi.com) |
Popular in | October |
Cheapest in | September |
Average price | $511 |
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 June 12, 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
Sat 7/4
7:23 am-2:37 pm
1 stop9h 14m
Idaho Falls Fanning Field
Thu 7/9
7:00 pm-6:15 am
1 stop9h 15m
$439
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Sun 8/23
5:45 am-2:35 pm
2 stops10h 50m
Idaho Falls Fanning Field
Sun 8/30
7:00 pm-6:05 am
1 stop9h 05m
$499
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Sat 8/22
5:46 am-2:35 pm
2 stops10h 49m
Idaho Falls Fanning Field
Fri 8/28
7:00 pm-6:05 am
1 stop9h 05m
$504
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Wed 7/29
7:33 am-3:37 pm
1 stop10h 04m
Idaho Falls Fanning Field
Wed 8/5
1:43 pm-6:13 am
1 stop14h 30m
$509
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Tue 8/25
7:02 am-3:20 pm
1 stop10h 18m
Idaho Falls Fanning Field
Tue 9/1
6:18 am-5:56 pm
1 stop9h 38m
$509
Quickest round-trip
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Sat 8/22
6:16 am-3:23 pm
2 stops11h 07m
Idaho Falls Fanning Field
Fri 8/28
2:25 pm-11:45 pm
1 stop7h 20m
$520
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Sat 7/11
7:33 am-3:37 pm
1 stop10h 04m
Idaho Falls Fanning Field
Thu 7/16
4:14 pm-6:13 am
2 stops11h 59m
$527
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Sat 7/11
7:33 am-3:37 pm
1 stop10h 04m
Idaho Falls Fanning Field
Wed 7/15
4:14 pm-6:13 am
2 stops11h 59m
$546
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Wed 6/24
5:46 pm-1:06 pm
1 stop21h 20m
Idaho Falls Fanning Field
Mon 7/27
4:14 pm-3:23 pm
1 stop21h 09m
$577
Cheapest one-way
Quickest one-way
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Sun 7/5
8:00 am-1:25 pm
1 stop7h 25m
$276
Showing 1-10 of 18 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 June.
| 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, September is the cheapest month in which you can book a flight from Philadelphia to Idaho Falls (average of $449). Flying from Philadelphia to Idaho Falls in October is currently the most expensive (average of $690). 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?
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 June 12, 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.
Entertainment
7.8
Food
7.2
Overall
7.9
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Food
7.2
Overall
7.9
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Food
7.2
Overall
7.9
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Food
7.2
Overall
7.9
Comfort
7.8
Boarding
8.1
Crew
8.5
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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Find flights from Philadelphia to Idaho Falls, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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 June 12, 2026.
Philadelphia and Idaho Falls flights
Browse other Philadelphia and Idaho Falls flight options. Last updated on June 12, 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 June 12, 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 June 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$354 | Average$511 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$379 | Average$575 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$413 | Average$570 | FlexibilityNo cancel fee | On-time71% |