IDA - PHL

$177 Find Cheap Flights from Idaho Falls to Philadelphia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Idaho Falls to Philadelphia departing on 9/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Philadelphia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Idaho Falls to Philadelphia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Idaho Falls to Philadelphia, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Idaho Falls to Philadelphia (IDA-PHL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Idaho Falls to Philadelphia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Idaho Falls to Philadelphia

Sun, Oct 19 - Mon, Oct 27
Delta Logo
6:53 pm - 5:50 amIDA-PHL
8h 57m1 stop
Delta Logo
7:05 am - 12:33 pmPHL-IDA
7h 28m1 stop
$426Delta
Find Deal
Mon, Dec 15 - Wed, Dec 31
Delta Logo
7:06 pm - 9:26 amIDA-PHL
12h 20m2 stops
Delta Logo
7:00 am - 12:27 pmPHL-IDA
7h 27m1 stop
$431Delta
Find Deal
Sun, Dec 21 - Wed, Dec 31
Delta Logo
6:57 pm - 5:36 amIDA-PHL
8h 39m1 stop
Delta Logo
7:00 am - 12:27 pmPHL-IDA
7h 27m1 stop
$441Delta
Find Deal
Wed, Dec 24 - Wed, Dec 31
Delta Logo
1:10 pm - 11:16 pmIDA-PHL
8h 06m2 stops
Delta Logo
7:00 am - 12:27 pmPHL-IDA
7h 27m1 stop
$446Delta
Find Deal
Wed, Nov 12 - Mon, Nov 17
Alaska Airlines Logo
3:50 pm - 5:42 amIDA-PHL
11h 52m1 stop
Alaska Airlines Logo
7:12 pm - 3:13 pmPHL-IDA
22h 01m1 stop
$503Alaska Airlines
Find Deal
Wed, Nov 12 - Mon, Nov 17
United Airlines Logo
8:30 am - 11:03 pmIDA-PHL
12h 33m2 stops
United Airlines Logo
8:08 am - 3:16 pmPHL-IDA
9h 08m1 stop
$514United Airlines
Find Deal
Wed, Nov 12 - Mon, Nov 17
United Airlines Logo
10:50 am - 11:03 pmIDA-PHL
10h 13m2 stops
United Airlines Logo
10:05 am - 9:03 pmPHL-IDA
12h 58m2 stops
$519United Airlines
Find Deal
Wed, Nov 12 - Mon, Nov 17
American Airlines Logo
7:10 am - 5:30 pmIDA-PHL
8h 20m1 stop
American Airlines Logo
1:45 pm - 10:34 pmPHL-IDA
10h 49m1 stop
$525American Airlines
Find Deal
Wed, Oct 8 - Sat, Oct 11
Alaska Airlines Logo
6:00 am - 6:11 pmIDA-PHL
10h 11m1 stop
Alaska Airlines Logo
7:00 am - 3:38 pmPHL-IDA
10h 38m1 stop
$529Alaska Airlines
Find Deal
Wed, Nov 12 - Mon, Nov 17
American Airlines Logo
7:10 am - 5:30 pmIDA-PHL
8h 20m1 stop
American Airlines Logo
1:00 pm - 10:34 pmPHL-IDA
11h 34m2 stops
$530American Airlines
Find Deal

Everything you should know

Top airlines
Delta
Cheapest • from $426 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$426
Delta
Sun 10/19Mon 10/27
IDA - PHL • 1 stop
Cheapest one-way
$177
Multiple Airlines
Mon 9/29
IDA - PHL • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Philadelphia!
Booking Insights

KAYAK's insights & trends for Idaho Falls to Philadelphia flights

Get data-powered insights and trends into flights from Idaho Falls to Philadelphia to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Idaho Falls to Philadelphia?

The average price of all round-trip flights from Idaho Falls to Philadelphia clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Idaho Falls to Philadelphia, look for departures on Fridays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from Philadelphia, Thursday is the cheapest day to fly and Monday is the most expensive.

Good to know

Low seasonApril
Cheapest flight$177
Best time to beat the crowds with an average 57% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from Idaho Falls to Philadelphia

When to book flights from Idaho Falls to Philadelphia

Are your dates flexible? Find out the best times to travel from Idaho Falls to Philadelphia based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Idaho Falls to Philadelphia

  • What is the cheapest flight from Idaho Falls to Philadelphia?

    In the last 3 days, the lowest price for a flight from Idaho Falls to Philadelphia was $177 for a one-way ticket and $426 for a round-trip.

  • Do I need a passport to fly between Idaho Falls and Philadelphia?

    A passport is not required to fly from Idaho Falls to Philadelphia.

  • Which airports will I be using when flying from Idaho Falls to Philadelphia?

    When flying out of Idaho Falls you will be using Idaho Falls Fanning Field. You will be landing at Philadelphia, also known as Philadelphia.

  • Which aircraft models fly most regularly from Idaho Falls to Philadelphia?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Idaho Falls to Philadelphia?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Idaho Falls and Philadelphia, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Idaho Falls to Philadelphia, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Idaho Falls to Philadelphia are United Airlines and American Airlines. With an average price for the route of $790 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $595 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Idaho Falls to Philadelphia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Idaho Falls to Philadelphia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Idaho Falls to Philadelphia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Philadelphia from Idaho Falls is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Idaho Falls to Philadelphia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Philadelphia with an airline and back to Idaho Falls with another airline. Booking your flights between Idaho Falls and PHL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Idaho Falls to Philadelphia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Philadelphia from Idaho Falls up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Idaho Falls to Philadelphia

 
See real verified KAYAK customer reviews for airlines flying from Idaho Falls to Philadelphia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Idaho Falls to Philadelphia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8929 reviews
7.1Entertainment
7.3Comfort
7.7Boarding
8.1Crew
6.6Food
Airline reviews

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

6.0 GoodKaren Andrea, Sep 2025IAH - MCO
Read more United Airlines reviews

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

IAD with the archaic people movers is just a place to be avoided.

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

I flew with my dog and had already purchased my dog’s ticket. Even that morning I had called costumer service to insure that my husband and I had seats together since the website was giving me an error when choosing our seats and the representative mentioned our dog. I showed up early to the airport and when I got to the gate and we started boarding I was help back and told that I was supposed to have a yellow tag and that I should have checked in at the counter for them to give me that tag. I was not aware of this, the representative on the phone did not say anything. Nor did I see it anywhere in the checking process online, so if you travel with a pet and are not checking in luggage, just know that you still have to go to the check in counter when arriving at the airport unless you want to be the last one to board and not have room for your carry on in the overhead bins. Other than that, I had a great experience.

Once we got in the air the pilot made up some of the time of the delay. So that was really nice.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

There was no food available for this red eye... one little waffle cookie for a 6+ hour flight... thank God I was able to sleep some

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

Internet was a bit expensive and did not work ask that week otherwise a good flight

The flight had a delay that made me being in a real rush to take the second flight. The delay was almost for 2 hours. They moved us from gate to gate in 4 times. Once I arrived to Philadelphia, I got to run thorough all the airport, as the train was already closed by that time. So I got sick with asthma for all the running I had to do. And I was the last one to board, when it was almost closed. So irresponsable with the people

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Overall, a good experience. The food, however, was subpar. The breakfast was a joke.

I was late from Jacksonville, FL but the limited interaction I had with the Philly crew was great.

The delays and cancellations kept me stuck in Miami for an additional 24 hours, and the whole thing seemed extremely disorganized

Everything was great except British airways lost our luggage that was gate checked all the way through to Italy. No one knows currently where one is and the other one may be in route to Amsterdam to meet us but not sure. If you can Hale’s it would be awesome. The website is not helpful.

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

the pilot that landed this flight in Philadelphia did an amazing job, the weather was absolutely terrible and we landed safely.

Everything you need to know for your flight from Idaho Falls to Philadelphia

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