IDA - PHL

$245 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 9/13. 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

Mon, Sep 22 - Thu, Oct 2
 Logo
9:39 pm - 7:35 amIDA-PHL
55h 56m2 stops
 Logo
5:21 pm - 4:14 pmPHL-IDA
24h 53m1 stop
Fri, Sep 26 - Thu, Oct 2
 Logo
10:55 pm - 8:51 pmIDA-PHL
19h 56m1 stop
 Logo
5:21 pm - 4:14 pmPHL-IDA
24h 53m1 stop
Mon, Sep 22 - Sat, Sep 27
Delta Logo
6:51 pm - 5:45 amIDA-PHL
8h 54m1 stop
Delta Logo
7:00 am - 12:26 pmPHL-IDA
7h 26m1 stop
$369Delta
Find Deal
Mon, Sep 22 - Sat, Sep 27
Delta Logo
6:51 pm - 9:25 amIDA-PHL
12h 34m2 stops
Delta Logo
7:00 am - 12:26 pmPHL-IDA
7h 26m1 stop
$374Delta
Find Deal
Thu, Sep 25 - Tue, Sep 30
American Airlines Logo
1:35 pm - 12:50 amIDA-PHL
9h 15m1 stop
American Airlines Logo
1:16 pm - 9:25 pmPHL-IDA
10h 09m1 stop
$425American Airlines
Find Deal
Thu, Sep 25 - Tue, Sep 30
American Airlines Logo
1:35 pm - 12:50 amIDA-PHL
9h 15m1 stop
American Airlines Logo
11:40 am - 9:25 pmPHL-IDA
11h 45m2 stops
$430American Airlines
Find Deal
Wed, Oct 8 - Sat, Oct 11
Alaska Airlines Logo
6:00 am - 5:40 amIDA-PHL
21h 40m1 stop
Alaska Airlines Logo
7:00 am - 3:38 pmPHL-IDA
10h 38m1 stop
$452Alaska 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
$459Alaska Airlines
Find Deal
Tue, Sep 23 - Fri, Oct 3
United Airlines Logo
2:35 pm - 11:29 pmIDA-PHL
6h 54m1 stop
United Airlines Logo
3:45 pm - 8:52 pmPHL-IDA
7h 07m1 stop
$489United Airlines
Find Deal
Tue, Sep 23 - Thu, Oct 2
United Airlines Logo
5:00 am - 3:49 pmIDA-PHL
8h 49m1 stop
United Airlines Logo
12:50 pm - 8:52 pmPHL-IDA
10h 02m2 stops
$494United Airlines
Find Deal
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.

What is the cheapest month to fly from Idaho Falls to Philadelphia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Idaho Falls to Philadelphia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Idaho Falls to Philadelphia is April, where tickets cost $279 (return) on average. On the other hand, the most expensive months are December and September, where the average cost of round-trip tickets is $1,248 and $1,023 respectively.

Good to know

Low seasonJanuary
Cheapest flight$245
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 2% 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 $245 for a one-way ticket and $299 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?

    Star Alliance, oneworld, and SkyTeam 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 3 airlines serving 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.
8.0
DeltaOverall score based on 7981 reviews
8.2Boarding
7.9Comfort
8.5Crew
7.9Entertainment
7.3Food
Airline reviews

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

10.0 ExcellentLee, Aug 2025ATL - PHL
Read more Delta reviews

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

The seats got pretty uncomfortable pretty fast. The armrests are bigger than on other planes, so I had less room in the actual seat. My butt hurt by the end of the flight. :/ comfort was the primary issue. The crew were fantastic!

I believe that a four-hour trip should have a meal. Delta had none.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

There was supposed to be a meal served, but there wasn’t and the major toilet was out of order

They made us board and then deboard due to mechanical issue which delayed the departure by almost 2 hours and we barely made our connecting flight. These quality checks should've been done before boarding not after.

Having to up charge for a seat assignment is not good. Delta can do better

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.

The flight was comfortable with the exit row and great service

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

This flight was perfect. No complaints and only the highest regard for the crew and ground staff and how they executed perfectly. I fly a lot with United and would request predictability and transparency in their operations instead of last minute changes.

This is for UA2274 from Houston to Sacramento. The flight was delayed arriving due to mechanical issues so we left about 3 hours later than scheduled. When boarding the plane the temperature inside was excessive - likely close to 100. Pilot apologized and said it was going to improve at altitude, which it did. But before that I honestly thought there might have been more delays removing passengers made ill from the heat. We were delayed leaving due to another mechanical issue. There was not water on the plane due to a panel that was not secured. They did that quickly, but the combination of mechanical issues was rather disturbing and did not reflect well on United.

1. when we went to check in, our 2 first class seats had been CANCELED and the flight was sold out. This was done without our prior knowledge. It was all we could do to restore one first class seat for my wife and I flew economy. 2, Our flight home was scheduled to leave at 10:30 pm. Due to tsunami warnings, the roads were closed and our flight status was uncertain as to whether it would leave as scheduled. It was announced that it would now leave at 11:20 pm and the roads were now open since the tsunami had come and gone. We made a mad dash to the airport and checked in. Delays were announced at 12:30 pm, 1:30 am, 2:30 am and at 3:30 am it was canceled. Since this was a flight due to natural (tsunami) causes, there was no compensation. We were told to return at 1:00 pm the next day and our baggage would be kept on the plane since the same plane was going to leave at 1:00 pm. We had to return to our hotel for the rest of the night. The same plane did not leave at 1:00 pm and our baggage was gone! All in all, it was a miserable performance by UA. Information was hard to obtain and no one knew what was going on and what was going to happen. Hundreds of passengers slept on the floor, chairs, etc. No food and no water was made available to the passengers. It was a situation where UA could care less what was going on. As a one million mile flyer, I had not experienced anything like this before and it was hugely disappointing!

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.

The flight was just perfect! We left a few minutes early, had a smooth flight and fortunately had landed before the terrible accident that took off from North Philadelphia airport shortly thereafter.

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

Information on your arrival and departure airports

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