IDA - PHL

$181 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 2/16. 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, 0 bags

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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Everything you should know

Cheapest round-trip
$359
Overall average: $726
United Airlines
Wed 2/18Sat 2/21
IDA - PHL • 1 stop
Cheapest one-way
$181
Multiple Airlines
Mon 2/16
IDA - PHL • 2 stops
When to travel
April
Cheapest • 61% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Philadelphia!
Flight Deals
Booking Insights
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

Wed, Feb 18 - Sat, Feb 21
United Airlines Logo
2:40 pm - 11:30 pm
IDA
-
PHL
6h 50m
1 stop
United Airlines Logo
3:37 pm - 8:58 pm
PHL
-
IDA
7h 21m
1 stop
$359United Airlines
Wed, Feb 18 - Sat, Feb 21
United Airlines Logo
2:40 pm - 11:30 pm
IDA
-
PHL
6h 50m
1 stop
United Airlines Logo
10:06 am - 8:58 pm
PHL
-
IDA
12h 52m
2 stops
$364United Airlines
Mon, Apr 13 - Sat, Apr 18
Delta Logo
6:57 pm - 5:35 am
IDA
-
PHL
8h 38m
1 stop
Delta Logo
2:34 pm - 10:35 pm
PHL
-
IDA
10h 01m
2 stops
$389Delta
Mon, Apr 13 - Sat, Apr 18
Delta Logo
6:57 pm - 5:35 am
IDA
-
PHL
8h 38m
1 stop
Delta Logo
7:00 am - 12:26 pm
PHL
-
IDA
7h 26m
1 stop
$404Delta
Tue, Apr 7 - Sat, Apr 11
American Airlines Logo
1:43 pm - 12:11 am
IDA
-
PHL
8h 28m
1 stop
American Airlines Logo
5:00 am - 1:13 pm
PHL
-
IDA
10h 13m
1 stop
$419American Airlines
Tue, Apr 7 - Sat, Apr 11
American Airlines Logo
7:30 am - 8:55 pm
IDA
-
PHL
11h 25m
2 stops
American Airlines Logo
7:05 am - 1:13 pm
PHL
-
IDA
8h 08m
1 stop
$444American Airlines
Wed, Feb 18 - Sat, Feb 21
United Airlines Logo
2:40 pm - 9:48 am
IDA
-
PHL
17h 08m
2 stops
United Airlines Logo
10:06 am - 8:58 pm
PHL
-
IDA
12h 52m
2 stops
$474United Airlines
Wed, Feb 18 - Sat, Feb 21
United Airlines Logo
5:33 pm - 2:19 pm
IDA
-
PHL
18h 46m
2 stops
United Airlines Logo
6:27 am - 1:30 pm
PHL
-
IDA
9h 03m
2 stops
$479United Airlines
Tue, Apr 7 - Sat, Apr 11
American Airlines Logo
1:43 pm - 12:11 am
IDA
-
PHL
8h 28m
1 stop
American Airlines Logo
12:51 pm - 11:39 pm
PHL
-
IDA
12h 48m
2 stops
$484American Airlines
Wed, Feb 18 - Sat, Feb 21
United Airlines Logo
5:33 pm - 2:19 pm
IDA
-
PHL
18h 46m
3 stops
United Airlines Logo
6:27 am - 1:30 pm
PHL
-
IDA
9h 03m
2 stops
$489United Airlines
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 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 September and October, where the average cost of round-trip tickets is $1,726 and $749 respectively.

Good to know

Low seasonJanuary
Cheapest flight$181
Best time to beat the crowds with an average 35% drop in price.
Most popular time to fly with an average 5% 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 $181 for a one-way ticket and $359 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, oneworld, and Star Alliance are the airline alliances operating flights between Idaho Falls and Philadelphia, with SkyTeam being the most commonly used for this route.

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

    The two airlines most popular with KAYAK users for flights from Idaho Falls to Philadelphia are Delta and United Airlines. With an average price for the route of $579 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $846 and an overall rating of 7.4.

  • 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.
7.9
DeltaOverall score based on 8051 reviews
7.8Entertainment
8.1Boarding
7.2Food
7.9Comfort
8.5Crew
Airline reviews

Departure was delayed resulting in me missing my connection. Delta did not autimatically find me another flight.

4.0 OkayNeal, Jan 2026
SEA - SLC
Read more Delta reviews

Departure was delayed resulting in me missing my connection. Delta did not autimatically find me another flight.

The seats weren’t reclining even though it wasn’t as exit seat

It was good because we traveled without luggage, carry on only.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

The entertainment screens were not working and there was no air condition the entire flight. Very uncomfortable.

I have diamond medallion status and usually we are in comfort plus . We were in main this time ( which was fine ) and my husband wanted wine . I have at least 10 vouchers for drinks that are good for this year and next! The attendant would not take the picture of the voucher as proof and never came back to check as She asked me to pull it up on delta Wi-Fi. Instead my husband just used his Amex to buy the wine . Disappointing!!!

Food is basically Sun Chips, cookies or Cheezits. I had an exit row seat so I had plenty of room. The crew was very nice and efficient. Pilot kept us informed. Pretty good flight.

Air travel sucks. It continues to be awful for all airlines. No shame on delta alone.

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

Comfort Plus seat 11E seemed smaller than prior flights. The movie selection is good. Watched most of the most recent Tron movie. I'll watch the remaining part later as my movie is saved in the Delta Seatback Experience.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

left on time, reasonable boarding process arrived early luggage came out quickly

I like flying first class, and United has a nice one

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

They lost my luggage, so, not happy. The crew was nice but my suitcases never made it, still trying to find out what happened!

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

Crew were all friendly and helpful. It was a short flight so just a beverage service with a cookie. After we were boarded the plane took about 45 minutes to leave the gate but it was New Year’s Eve so not shocking there was some delay. Overall good experience and very grateful.

the trip to madrid was uncomfortable with my legs touching the seat in front of me

Very crowded flight but what can you expect these days?? Crew was accommodating.

The seats in economy were appeared to be quite thin and lack sufficient cushioning to be comfortable. Perhaps it was my seating position but the plane seemed notably load.

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

Information on your arrival and departure airports