$169+ 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — IDA
Jun 17 — Jun 241
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
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Best
Last-minute
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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 May 18, 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 May 18, 2026.
This Alaska Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:00 am
PHL
- IDA
1 stop10h 35m
Alaska Airlines
Sat 10/316:09 am
IDA
- PHL
1 stop9h 30m
Alaska Airlines
Deal found 5/13![Alaska Airlines logo]()
$349
This Alaska Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/134:44 pm
PHL
- IDA
1 stop22h 22m
Alaska Airlines
Fri 9/254:14 pm
IDA
- PHL
1 stop21h 30m
Alaska Airlines
Deal found 5/13![Alaska Airlines logo]()
$399
This American Airlines deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/195:00 am
PHL
- IDA
1 stop8h 30m
American Airlines
Tue 8/257:00 am
IDA
- PHL
1 stop9h 48m
American Airlines
Deal found 5/16![American Airlines logo]()
$410
This Alaska Airlines deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/297:16 pm
PHL
- IDA
1 stop22h 10m
Alaska Airlines
Tue 6/24:03 pm
IDA
- PHL
1 stop21h 42m
Alaska Airlines
Deal found 5/14![Alaska Airlines logo]()
$429
This Delta deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/297:25 am
PHL
- IDA
1 stop9h 09m
Delta
Tue 6/211:30 am
IDA
- PHL
2 stops8h 42m
Delta
Deal found 5/14![Delta logo]()
$434
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2811:39 am
PHL
- IDA
2 stops11h 29m
United Airlines
Sat 10/317:00 am
IDA
- PHL
1 stop6h 36m
United Airlines
Deal found 5/13![United Airlines logo]()
$454
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/124:24 pm
PHL
- IDA
2 stops42h 31m
Multiple Airlines
Mon 6/2210:56 pm
IDA
- PHL
1 stop29h 31m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$461
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 May 18, 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 May 18, 2026.
This Alaska Airlines deal was found by Cheapflights users on 5/16. 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 10/287:00 am
PHL
- IDA
1 stop10h 35m
Alaska Airlines
Sat 10/316:09 am
IDA
- PHL
1 stop9h 30m
Alaska Airlines
Deal found 5/16![Alaska Airlines logo]()
$349
This United Airlines deal was found by Cheapflights users on 5/16. 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 10/2811:39 am
PHL
- IDA
2 stops11h 29m
United Airlines
Sat 10/312:35 pm
IDA
- PHL
1 stop6h 11m
United Airlines
Deal found 5/16![United Airlines logo]()
$454
This Alaska Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/134:44 pm
PHL
- IDA
1 stop22h 22m
Alaska Airlines
Fri 9/254:14 pm
IDA
- PHL
1 stop21h 30m
Alaska Airlines
Deal found 5/13![Alaska Airlines logo]()
$399
This Alaska Airlines deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/224:44 pm
PHL
- IDA
1 stop22h 22m
Alaska Airlines
Fri 8/284:14 pm
IDA
- PHL
1 stop21h 30m
Alaska Airlines
Deal found 5/14![Alaska Airlines logo]()
$459
This United Airlines deal was found by Cheapflights users on 5/18. 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 27m
United Airlines
Fri 8/282:25 pm
IDA
- PHL
1 stop7h 20m
United Airlines
Deal found 5/18![United Airlines logo]()
$514
Last-minute flights from Philadelphia to Idaho FallsDiscover last-minute flight deals from Philadelphia to Idaho Falls. Data last updated May 18, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Idaho Falls. Data last updated May 18, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/297:16 pm
PHL
- IDA
1 stop22h 10m
Alaska Airlines
Tue 6/24:03 pm
IDA
- PHL
1 stop21h 42m
Alaska Airlines
Deal found 5/14![Alaska Airlines logo]()
$429
This Delta deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/297:25 am
PHL
- IDA
1 stop9h 09m
Delta
Tue 6/211:30 am
IDA
- PHL
2 stops8h 42m
Delta
Deal found 5/14![Delta logo]()
$434
This Alaska Airlines deal was found by Cheapflights users on 5/18. 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 6/57:16 pm
PHL
- IDA
1 stop22h 10m
Alaska Airlines
Tue 6/94:03 pm
IDA
- PHL
2 stops17h 37m
Alaska Airlines
Deal found 5/18![Alaska Airlines logo]()
$574
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/124:24 pm
PHL
- IDA
2 stops42h 31m
Multiple Airlines
Mon 6/2210:56 pm
IDA
- PHL
1 stop29h 31m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$461
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/124:24 pm
PHL
- IDA
2 stops42h 31m
Multiple Airlines
Fri 6/1910:56 pm
IDA
- PHL
1 stop29h 31m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$546
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/134:35 pm
PHL
- IDA
2 stops18h 20m
Multiple Airlines
Mon 6/2210:56 pm
IDA
- PHL
1 stop29h 31m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$529
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/146:30 am
PHL
- IDA
2 stops35h 38m
Multiple Airlines
Mon 6/2210:56 pm
IDA
- PHL
1 stop29h 31m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$499
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/1411:00 am
PHL
- IDA
1 stop31h 08m
Multiple Airlines
Sun 6/219:45 am
IDA
- PHL
2 stops46h 45m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$573
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/1411:00 am
PHL
- IDA
1 stop31h 08m
Multiple Airlines
Sat 6/204:02 pm
IDA
- PHL
2 stops45h 05m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$577
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/188:37 pm
PHL
- IDA
2 stops21h 31m
Multiple Airlines
Mon 6/2210:56 pm
IDA
- PHL
1 stop29h 31m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$540
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 May 18, 2026.
Search for one-way flight options from Philadelphia to Idaho Falls. Find affordable one-way fares based on user searches. Data last updated May 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/16. 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 8/306:07 pm
PHL
- IDA
2 stops21h 40m
Allegiant Air
Deal found 5/16![Allegiant Air logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:10 pm
PHL
- IDA
2 stops19h 40m
Allegiant Air
Deal found 5/14![Allegiant Air logo]()
$193
This Alaska Airlines deal was found by Cheapflights users on 5/15. 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 6/34:45 pm
PHL
- IDA
1 stop22h 32m
Alaska Airlines
Deal found 5/15![Alaska Airlines logo]()
$235
This Delta deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/155:40 am
PHL
- IDA
2 stops10h 56m
Delta
Deal found 5/13![Delta logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/294:51 pm
PHL
- IDA
2 stops42h 05m
Allegiant Air
Deal found 5/14![Allegiant Air logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 5/18. 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 8/66:33 pm
PHL
- IDA
2 stops23h 32m
Multiple Airlines
Deal found 5/18![Multiple Airlines logo]()
$252
This Alaska Airlines deal was found by Cheapflights users on 5/18. 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 5/264:45 pm
PHL
- IDA
1 stop22h 32m
Alaska Airlines
Deal found 5/18![Alaska Airlines logo]()
$260
This American Airlines deal was found by Cheapflights users on 5/16. 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 8/307:36 am
PHL
- IDA
1 stop7h 35m
American Airlines
Deal found 5/16![American Airlines logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/75:21 am
PHL
- IDA
2 stops12h 44m
Multiple Airlines
Deal found 5/18![Multiple Airlines logo]()
$274
This Alaska Airlines deal was found by Cheapflights users on 5/18. 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 5/234:45 pm
PHL
- IDA
1 stop22h 32m
Alaska Airlines
Deal found 5/18![Alaska Airlines logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 5/18. 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.
Mon 8/35:21 am
PHL
- IDA
2 stops12h 39m
Multiple Airlines
Deal found 5/18![Multiple Airlines logo]()
$279
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 May 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $429 (Alaska Airlines) |
One-way from | $169 (Kiwi.com) |
Popular in | June |
Cheapest in | May |
Average price | $379 |
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 May 18, 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
Wed 10/28
7:00 am-3:35 pm
1 stop10h 35m
Idaho Falls Fanning Field
Sat 10/31
6:09 am-5:39 pm
1 stop9h 30m
$349
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Sun 9/13
4:44 pm-1:06 pm
1 stop22h 22m
Idaho Falls Fanning Field
Fri 9/25
4:14 pm-3:44 pm
1 stop21h 30m
$399
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Wed 10/28
11:39 am-9:08 pm
2 stops11h 29m
Idaho Falls Fanning Field
Sat 10/31
2:35 pm-10:46 pm
1 stop6h 11m
$454
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Sat 8/22
4:44 pm-1:06 pm
1 stop22h 22m
Idaho Falls Fanning Field
Fri 8/28
4:14 pm-3:44 pm
1 stop21h 30m
$459
Quickest round-trip
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Sat 8/22
6:25 am-11:52 am
1 stop7h 27m
Idaho Falls Fanning Field
Fri 8/28
2:25 pm-11:45 pm
1 stop7h 20m
$514
Cheapest one-way
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Wed 6/3
4:45 pm-1:17 pm
1 stop22h 32m
$235
Quickest one-way
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Thu 9/10
10:05 am-3:23 pm
1 stop7h 18m
$241
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Fri 5/29
4:51 pm-8:56 am
2 stops42h 05m
$247
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Tue 5/26
4:45 pm-1:17 pm
1 stop22h 32m
$260
PhiladelphiaIdaho Falls
PHL - IDA
PHLIDA
Philadelphia
Sun 8/30
7:36 am-1:11 pm
1 stop7h 35m
$271
Showing 1-10 of 14 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 May.
| 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, May is the cheapest month in which you can book a flight from Philadelphia to Idaho Falls (average of $379). Flying from Philadelphia to Idaho Falls in June is currently the most expensive (average of $733). 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 May 18, 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
7.9
Boarding
8.1
Crew
8.5
Food
7.2
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.2
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.2
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.2
Entertainment
7.8
Comfort
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 May 18, 2026.
Philadelphia and Idaho Falls flights
Browse other Philadelphia and Idaho Falls flight options. Last updated on May 18, 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 May 18, 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 May 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$324 | Average$508 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$379 | Average$618 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$398 | Average$570 | FlexibilityNo cancel fee | On-time71% |