$270+ Cheap flights from Philadelphia to Idaho Falls (PHL - IDA)
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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — IDA
Nov 23 — Nov 301
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
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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 October 24, 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 October 24, 2026.
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1910:00 am -
1 stop7h 38m
Thu 11/2610:35 am -
1 stop6h 56m
Deal found 10/20![United Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 10/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/37:45 am -
1 stop7h 43m
Fri 11/62:35 pm -
1 stop7h 04m
Deal found 10/22![United Airlines logo]()
$494
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:02 am -
1 stop10h 16m
Tue 11/106:04 am -
1 stop8h 41m
Deal found 10/22![Alaska Airlines logo]()
$514
This Expedia deal was found by Cheapflights users on 10/22. 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.
Wed 11/185:49 pm -
1 stop23h 29m
Sat 11/211:55 pm -
1 stop13h 45m
Deal found 10/22![Alaska Airlines logo]()
$546
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:45 am -
1 stop9h 53m
Sun 11/82:35 pm -
1 stop7h 04m
Deal found 10/20![United Airlines logo]()
$569
This United Airlines deal was found by Cheapflights users on 10/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:45 am -
1 stop9h 53m
Tue 11/1010:35 am -
2 stops10h 56m
Deal found 10/22![United Airlines logo]()
$619
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 October 24, 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 October 24, 2026.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/147:00 am -
1 stop7h 27m
Mon 4/196:45 pm -
1 stop8h 56m
Deal found 10/20![Delta logo]()
$379
This United Airlines deal was found by Cheapflights users on 10/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/61:19 pm -
2 stops9h 51m
Sat 1/92:30 pm -
1 stop7h 07m
Deal found 10/22![United Airlines logo]()
$384
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1910:00 am -
1 stop7h 38m
Thu 11/2610:35 am -
1 stop6h 56m
Deal found 10/20![United Airlines logo]()
$429
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/310:21 am -
2 stops13h 58m
Mon 2/86:45 pm -
2 stops14h 17m
Deal found 10/20![Delta logo]()
$513
This United Airlines deal was found by Cheapflights users on 10/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/37:45 am -
1 stop7h 43m
Fri 11/62:35 pm -
1 stop7h 04m
Deal found 10/22![United Airlines logo]()
$494
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/99:55 am -
2 stops13h 15m
Tue 1/122:30 pm -
1 stop7h 07m
Deal found 10/20![United Airlines logo]()
$504
Last-minute flights from Philadelphia to Idaho FallsDiscover last-minute flight deals from Philadelphia to Idaho Falls. Data last updated October 24, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Idaho Falls. Data last updated October 24, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/37:45 am -
1 stop7h 43m
Fri 11/62:35 pm -
1 stop7h 04m
Deal found 10/22![United Airlines logo]()
$494
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:45 am -
1 stop9h 53m
Sun 11/82:35 pm -
1 stop7h 04m
Deal found 10/20![United Airlines logo]()
$569
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:02 am -
1 stop10h 16m
Tue 11/106:04 am -
1 stop8h 41m
Deal found 10/22![Alaska Airlines logo]()
$514
This United Airlines deal was found by Cheapflights users on 10/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:45 am -
1 stop9h 53m
Tue 11/1010:35 am -
2 stops10h 56m
Deal found 10/22![United Airlines logo]()
$619
This Expedia deal was found by Cheapflights users on 10/22. 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.
Wed 11/185:49 pm -
1 stop23h 29m
Sat 11/211:55 pm -
1 stop13h 45m
Deal found 10/22![Alaska Airlines logo]()
$546
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1910:00 am -
1 stop7h 38m
Thu 11/2610:35 am -
1 stop6h 56m
Deal found 10/20![United Airlines logo]()
$429
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 October 24, 2026.
Search for one-way flight options from Philadelphia to Idaho Falls. Find affordable one-way fares based on user searches. Data last updated October 24, 2026.
This United Airlines deal was found by Cheapflights users on 10/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3110:00 am -
1 stop7h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![United Airlines logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 11/35:22 pm -
3 stops40h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$380
This Delta deal was found by Cheapflights users on 10/23. 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.
Mon 12/287:10 am -
1 stop7h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Delta logo]()
$443
This Delta deal was found by Cheapflights users on 10/23. 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 12/269:10 am -
2 stops15h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Delta logo]()
$487
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/315:45 pm -
3 stops51h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$553
This United Airlines deal was found by Cheapflights users on 10/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/286:24 am -
2 stops11h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![United Airlines logo]()
$578
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/267:02 am -
1 stop18h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Alaska Airlines logo]()
$581
This American Airlines deal was found by Cheapflights users on 10/23. 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.
Sun 12/273:35 pm -
1 stop8h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![American Airlines logo]()
$691
This United Airlines deal was found by Cheapflights users on 10/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/276:24 am -
2 stops9h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![United Airlines logo]()
$805
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 October 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $379 (Delta) |
One-way from | $270 (United Airlines) |
Popular in | July |
Cheapest in | March |
Average price | $518 |
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 7,457,451 searches. Data last updated October 24, 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 Philadelphia - IDA Idaho Falls Fanning Field
PHLIDA
Philadelphia
Tue 11/3
3:35 pm-9:09 pm
1 stop7h 34m
Idaho Falls Fanning Field
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$270
PhiladelphiaIdaho Falls
PHL Philadelphia - IDA Idaho Falls Fanning Field
PHLIDA
Philadelphia
Wed 4/14
7:00 am-12:27 pm
1 stop7h 27m
Idaho Falls Fanning Field
Mon 4/19
6:45 pm-5:41 am
1 stop8h 56m
$379
PhiladelphiaIdaho Falls
PHL Philadelphia - IDA Idaho Falls Fanning Field
PHLIDA
Philadelphia
Tue 11/3
5:22 pm-8:12 am
3 stops40h 50m
Idaho Falls Fanning Field
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$380
PhiladelphiaIdaho Falls
PHL Philadelphia - IDA Idaho Falls Fanning Field
PHLIDA
Philadelphia
Wed 1/6
1:19 pm-9:10 pm
2 stops9h 51m
Idaho Falls Fanning Field
Sat 1/9
2:30 pm-11:37 pm
1 stop7h 07m
$384
PhiladelphiaIdaho Falls
PHL Philadelphia - IDA Idaho Falls Fanning Field
PHLIDA
Philadelphia
Thu 11/19
10:00 am-3:38 pm
1 stop7h 38m
Idaho Falls Fanning Field
Thu 11/26
10:35 am-7:31 pm
1 stop6h 56m
$429
Quickest round-trip
PhiladelphiaIdaho Falls
PHL Philadelphia - IDA Idaho Falls Fanning Field
PHLIDA
Philadelphia
Mon 12/28
7:10 am-12:28 pm
1 stop7h 18m
Idaho Falls Fanning Field
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$443
PhiladelphiaIdaho Falls
PHL Philadelphia - IDA Idaho Falls Fanning Field
PHLIDA
Philadelphia
Tue 11/3
7:45 am-1:28 pm
1 stop7h 43m
Idaho Falls Fanning Field
Fri 11/6
2:35 pm-11:39 pm
1 stop7h 04m
$494
PhiladelphiaIdaho Falls
PHL Philadelphia - IDA Idaho Falls Fanning Field
PHLIDA
Philadelphia
Sat 1/9
9:55 am-9:10 pm
2 stops13h 15m
Idaho Falls Fanning Field
Tue 1/12
2:30 pm-11:37 pm
1 stop7h 07m
$504
PhiladelphiaIdaho Falls
PHL Philadelphia - IDA Idaho Falls Fanning Field
PHLIDA
Philadelphia
Wed 2/3
10:21 am-10:19 pm
2 stops13h 58m
Idaho Falls Fanning Field
Mon 2/8
6:45 pm-11:02 am
2 stops14h 17m
$513
PhiladelphiaIdaho Falls
PHL Philadelphia - IDA Idaho Falls Fanning Field
PHLIDA
Philadelphia
Sat 10/31
5:45 pm-7:40 pm
3 stops51h 55m
Idaho Falls Fanning Field
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$553
Showing 1-10 of 12 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 October.
| 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 July is currently the most expensive (average of $649). 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 $415 and $696 in January.The cheapest round-trip price found within the last 5 days was $379 on United Airlines (Jan 13-Jan 20).
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 October 24, 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.
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
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.
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Complete your trip
Complete your trip to Idaho Falls by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Philadelphia to Idaho Falls by cabin class
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 October 24, 2026.
Philadelphia and Idaho Falls flights
Browse other Philadelphia and Idaho Falls flight options. Last updated on October 24, 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 October 24, 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 7,457,451 searches. Data last updated October 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$354 | Average$508 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$379 | Average$578 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$413 | Average$587 | FlexibilityNo cancel fee | On-time71% |