$293+ 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 12/24. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — IDA
Oct 7 — Oct 141
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 September 7, 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 September 7, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/5. 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 10/277:02 am -
1 stop10h 18m
Fri 10/306:09 am -
1 stop9h 29m
Deal found 9/5![Alaska Airlines logo]()
$359
This Alaska Airlines deal was found by Cheapflights users on 9/6. 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 9/226:59 pm -
1 stop22h 21m
Sat 9/262:01 pm -
1 stop13h 39m
Deal found 9/6![Alaska Airlines logo]()
$484
This Delta deal was found by Cheapflights users on 9/7. 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.
Sun 9/137:20 am -
1 stop6h 55m
Fri 9/256:57 pm -
1 stop9h 08m
Deal found 9/7![Delta logo]()
$523
This American Airlines deal was found by Cheapflights users on 9/5. 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 9/137:00 am -
1 stop8h 37m
Fri 9/252:08 pm -
1 stop8h 14m
Deal found 9/5![American Airlines logo]()
$548
This United Airlines deal was found by Cheapflights users on 9/5. 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 11/207:45 am -
1 stop9h 53m
Wed 12/22:40 pm -
1 stop6h 06m
Deal found 9/5![United Airlines logo]()
$559
This Delta deal was found by Cheapflights users on 9/5. 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 11/206:58 pm -
1 stop19h 17m
Mon 11/306:57 pm -
1 stop8h 58m
Deal found 9/5![Delta logo]()
$563
This United Airlines deal was found by Cheapflights users on 9/5. 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
Fri 11/272:35 pm -
1 stop7h 04m
Deal found 9/5![United Airlines logo]()
$594
This American Airlines deal was found by Cheapflights users on 9/6. 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 9/2212:39 pm -
2 stops10h 41m
Sat 9/262:08 pm -
1 stop8h 14m
Deal found 9/6![American Airlines logo]()
$603
This Delta deal was found by Cheapflights users on 9/5. 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 11/206:58 pm -
1 stop19h 17m
Wed 12/21:00 pm -
2 stops8h 54m
Deal found 9/5![Delta logo]()
$618
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 September 7, 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 September 7, 2026.
This Delta deal was found by Cheapflights users on 9/3. 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 1/307:00 am -
1 stop7h 27m
Mon 2/86:45 pm -
1 stop8h 56m
Deal found 9/3![Delta logo]()
$359
This Alaska Airlines deal was found by Cheapflights users on 9/6. 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 10/277:02 am -
1 stop10h 18m
Fri 10/306:09 am -
1 stop9h 29m
Deal found 9/6![Alaska Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/276:15 am -
2 stops9h 13m
Fri 10/305:40 pm -
2 stops18h 39m
Deal found 9/3![United Airlines logo]()
$619
Last-minute flights from Philadelphia to Idaho FallsDiscover last-minute flight deals from Philadelphia to Idaho Falls. Data last updated September 7, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Idaho Falls. Data last updated September 7, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/4. 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 9/510:05 am -
1 stop7h 18m
Sat 9/122:25 pm -
1 stop7h 19m
Deal found 9/4![United Airlines logo]()
$623
This Delta deal was found by Cheapflights users on 9/7. 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.
Sun 9/137:20 am -
1 stop6h 55m
Fri 9/256:57 pm -
1 stop9h 08m
Deal found 9/7![Delta logo]()
$523
This American Airlines deal was found by Cheapflights users on 9/5. 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 9/137:00 am -
1 stop8h 37m
Fri 9/252:08 pm -
1 stop8h 14m
Deal found 9/5![American Airlines logo]()
$548
This United Airlines deal was found by Cheapflights users on 9/4. 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 9/198:00 am -
1 stop9h 23m
Wed 9/232:25 pm -
1 stop7h 19m
Deal found 9/4![United Airlines logo]()
$649
This Alaska Airlines deal was found by Cheapflights users on 9/6. 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 9/226:59 pm -
1 stop22h 21m
Sat 9/262:01 pm -
1 stop13h 39m
Deal found 9/6![Alaska Airlines logo]()
$484
This American Airlines deal was found by Cheapflights users on 9/6. 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 9/2212:39 pm -
2 stops10h 41m
Sat 9/262:08 pm -
1 stop8h 14m
Deal found 9/6![American Airlines logo]()
$603
This Alaska Airlines deal was found by Cheapflights users on 9/5. 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 10/277:02 am -
1 stop10h 18m
Fri 10/306:09 am -
1 stop9h 29m
Deal found 9/5![Alaska Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/276:15 am -
2 stops9h 13m
Fri 10/305:40 pm -
2 stops18h 39m
Deal found 9/3![United Airlines logo]()
$619
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 September 7, 2026.
Search for one-way flight options from Philadelphia to Idaho Falls. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
This American Airlines deal was found by Cheapflights users on 9/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/245:34 pm -
1 stop8h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![American Airlines logo]()
$293
This United Airlines deal was found by Cheapflights users on 9/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/246:24 am -
2 stops9h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![United Airlines logo]()
$308
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/246:25 am -
3 stops30h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$568
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 September 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $359 (Delta) |
One-way from | $293 (American Airlines) |
Popular in | July |
Cheapest in | March |
Average price | $564 |
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 September 7, 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
Quickest round-trip
PhiladelphiaIdaho Falls
PHL Philadelphia - IDA Idaho Falls Fanning Field
PHLIDA
Philadelphia
Thu 12/24
6:24 am-1:28 pm
2 stops9h 04m
Idaho Falls Fanning Field
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$308
PhiladelphiaIdaho Falls
PHL Philadelphia - IDA Idaho Falls Fanning Field
PHLIDA
Philadelphia
Sat 1/30
7:00 am-12:27 pm
1 stop7h 27m
Idaho Falls Fanning Field
Mon 2/8
6:45 pm-5:41 am
1 stop8h 56m
$359
PhiladelphiaIdaho Falls
PHL Philadelphia - IDA Idaho Falls Fanning Field
PHLIDA
Philadelphia
Tue 10/27
7:02 am-3:20 pm
1 stop10h 18m
Idaho Falls Fanning Field
Fri 10/30
6:09 am-5:38 pm
1 stop9h 29m
$359
PhiladelphiaIdaho Falls
PHL Philadelphia - IDA Idaho Falls Fanning Field
PHLIDA
Philadelphia
Thu 12/24
6:25 am-10:35 am
3 stops30h 10m
Idaho Falls Fanning Field
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$568
PhiladelphiaIdaho Falls
PHL Philadelphia - IDA Idaho Falls Fanning Field
PHLIDA
Philadelphia
Tue 10/27
6:15 am-1:28 pm
2 stops9h 13m
Idaho Falls Fanning Field
Fri 10/30
5:40 pm-2:19 pm
2 stops18h 39m
$619
Sorted 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 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 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 $474 and $744 in October.The cheapest round-trip price found within the last 5 days was $359 on Alaska Airlines (Oct 27-Oct 30).
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 September 7, 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.
Crew
8.5
Food
7.2
Overall
7.8
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
Crew
8.5
Food
7.2
Overall
7.8
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
Crew
8.5
Food
7.2
Overall
7.8
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
Crew
8.5
Food
7.2
Overall
7.8
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - 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.
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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Complete your trip
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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 September 7, 2026.
Philadelphia and Idaho Falls flights
Browse other Philadelphia and Idaho Falls flight options. Last updated on September 7, 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 September 7, 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 September 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$354 | Average$508 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$379 | Average$558 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$413 | Average$587 | FlexibilityNo cancel fee | On-time71% |