IDA - PHL

$331 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 6/20. 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
$449
Overall average: $279
American Airlines
Tue 4/7Sat 4/11
IDA - PHL • 1 stop
Cheapest one-way
$331
United Airlines
Sat 6/20
IDA - PHL • 1 stop
Top airlines
American Airlines
Cheapest • from $449 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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

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
$449American 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
12:55 pm - 11:39 pm
PHL
-
IDA
12h 44m
2 stops
$454American Airlines
Sat, May 2 - Sat, May 9
Alaska Airlines Logo
6:00 am - 5:58 pm
IDA
-
PHL
9h 58m
1 stop
Alaska Airlines Logo
7:22 am - 3:31 pm
PHL
-
IDA
10h 09m
1 stop
$467Alaska Airlines
Tue, Apr 7 - Sat, Apr 11
American Airlines Logo
7:30 am - 11:58 pm
IDA
-
PHL
14h 28m
2 stops
American Airlines Logo
7:05 am - 1:13 pm
PHL
-
IDA
8h 08m
1 stop
$475American Airlines
Tue, Apr 7 - Sat, Apr 11
American Airlines Logo
7:30 am - 11:58 pm
IDA
-
PHL
14h 28m
2 stops
American Airlines Logo
1:55 pm - 11:39 pm
PHL
-
IDA
11h 44m
2 stops
$481American 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
7:35 am - 1:30 pm
PHL
-
IDA
7h 55m
1 stop
$509United Airlines
Tue, Apr 7 - Sat, Apr 11
American Airlines Logo
7:30 am - 11:58 pm
IDA
-
PHL
14h 28m
2 stops
American Airlines Logo
1:55 pm - 11:39 pm
PHL
-
IDA
11h 44m
2 stops
$511American 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
6:27 am - 1:30 pm
PHL
-
IDA
9h 03m
2 stops
$514United Airlines
Tue, Jan 27 - Sat, Jan 31
United Airlines Logo
2:40 pm - 11:30 pm
IDA
-
PHL
6h 50m
1 stop
United Airlines Logo
8:09 am - 3:31 pm
PHL
-
IDA
9h 22m
1 stop
$516United Airlines
Sat, May 2 - Sat, May 9
United Airlines Logo
10:45 am - 12:45 am
IDA
-
PHL
12h 00m
2 stops
United Airlines Logo
6:17 am - 3:37 pm
PHL
-
IDA
11h 20m
2 stops
$520United 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$331
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 $331 for a one-way ticket and $449 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 8032 reviews
7.8Entertainment
7.9Comfort
7.2Food
8.5Crew
8.1Boarding
Airline reviews

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.

8.0 ExcellentG, Jan 2026
FLL - ATL
Read more Delta reviews

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.

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Late delayed flight delays boarding and delays leaving and delays on arrival too. Cramped plane no room no food.

DTW line is too long. The flights from DTW to BWI are always delayed for unknown reasons.

Delta canceled our flight and we had to scramble to find another airline to get home. Phoenix is not a delta hub so they didn’t have another plane. It would have been a red eye though Salt Lake City. Getting in at 5am. No bueno.

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

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.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

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