What are the cheapest airlines flying from Idaho Falls to Philadelphia round-trip?

Currently priced at $259, Delta will fly you from Idaho Falls to Philadelphia and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $454 and $502, respectively. These flights start at 61% lower than the current average price 3 months from now.

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

Travelers seeking maximum savings on their Idaho Falls to Philadelphia flight should consider departing on Friday at noon when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Philadelphia ranges from 2.7 - 4.4 inches per month. July is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Philadelphia when rainfall is around 2.7 in.

If weather is an important factor for your trip to Philadelphia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

What are the most popular airlines that fly from Idaho Falls to Philadelphia?

The most popular airlines flying from Idaho Falls to Philadelphia are American Airlines, Delta and United Airlines. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from Idaho Falls to Philadelphia?

Users have found that leaving on a Thursday can be a cost-effective option. It’s possible to save up to 61% on your flight compared to booking on days when demand is much higher.

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

The best pricing can be found in the month of April. Prices to Philadelphia from Idaho Falls average $667. You can even find prices in April for less than $667, as users have found deals to Philadelphia from as low as $279. The month of December appears to be one of the more expensive times to travel to Philadelphia from Idaho Falls. Flying in the targeted month can save you up to 87%.

Can I find deals for flights from Idaho Falls to Philadelphia that include hotel bookings?

Yes. In addition to deals on Idaho Falls to Philadelphia flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Idaho Falls to Philadelphia?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho Falls to Philadelphia.

Can I find deals for business class flights from Idaho Falls to Philadelphia?

Yes. Cheapflights offers flight deals from Idaho Falls to Philadelphia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$226+ Cheap Flights from Idaho Falls to Philadelphia

Q: How much does it cost to fly round-trip from Idaho Falls to Philadelphia?

Airfare is below average for this route at the moment. Idaho Falls to Philadelphia flights typically cost between $488 and $655 in October. The cheapest round-trip price found within the last 3 days was $369 on Delta (Oct 17-Oct 21).

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Cheap flight deals from Idaho Falls to Philadelphia

Round-trip from	$369 (Delta)
One-way from	$226 (American Airlines)
Popular in	December
Cheapest in	April
Average price	$550

From Idaho Falls Fanning Field to Philadelphia

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One-way flight from Idaho Falls Fanning Field to Philadelphia

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Highest demand for flights based on searches. 19% potential increase in price ($158 potential increase over avg. RT price).

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Cheapest flight prices on average. 8% potential price decrease ($53 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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Find flight deals from Idaho Falls to Philadelphia

Cheapest flights from Idaho Falls to Philadelphia
Explore the most affordable flight options available from Idaho Falls to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Fri 10/176:53 pmIDA - PHL

1 stop8h 57mDelta

Tue 10/217:05 amPHL - IDA

1 stop7h 28mDelta

Deal found 8/14

$369

Wed 11/123:50 pmIDA - PHL

1 stop11h 52mAlaska Airlines

Mon 11/177:12 pmPHL - IDA

1 stop22h 01mAlaska Airlines

Deal found 8/14

$388

Sun 10/191:11 pmIDA - PHL

1 stop9h 05mAmerican Airlines

Mon 10/277:38 amPHL - IDA

1 stop6h 47mAmerican Airlines

Deal found 8/14

$399

Wed 10/86:44 amIDA - PHL

1 stop8h 41mAmerican Airlines

Thu 10/167:38 amPHL - IDA

1 stop6h 47mAmerican Airlines

Deal found 8/12

$425

Wed 10/110:50 amIDA - PHL

2 stops11h 55mUnited Airlines

Fri 10/33:45 pmPHL - IDA

1 stop7h 07mUnited Airlines

Deal found 8/12

$430

Wed 10/86:00 amIDA - PHL

1 stop21h 40mAlaska Airlines

Sat 10/117:00 amPHL - IDA

1 stop10h 38mAlaska Airlines

Deal found 8/11

$452

Sat 12/138:00 amIDA - PHL

1 stop20h 01mAlaska Airlines

Mon 12/156:35 pmPHL - IDA

1 stop30h 03mAlaska Airlines

Deal found 8/12

$453

Wed 11/121:58 pmIDA - PHL

2 stops15h 59mAmerican Airlines

Mon 11/171:45 pmPHL - IDA

1 stop10h 49mAmerican Airlines

Deal found 8/12

$463

Best flights from Idaho Falls to Philadelphia
Discover carefully curated flight deals from Idaho Falls to Philadelphia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2025.

Fri 10/176:53 pmIDA - PHL

1 stop8h 57mDelta

Tue 10/217:05 amPHL - IDA

1 stop7h 28mDelta

Deal found 8/14

$369

Wed 11/123:50 pmIDA - PHL

1 stop11h 52mAlaska Airlines

Mon 11/177:12 pmPHL - IDA

1 stop22h 01mAlaska Airlines

Deal found 8/14

$388

Sun 10/191:11 pmIDA - PHL

1 stop9h 05mAmerican Airlines

Mon 10/277:38 amPHL - IDA

1 stop6h 47mAmerican Airlines

Deal found 8/14

$399

Wed 10/110:50 amIDA - PHL

2 stops11h 55mUnited Airlines

Fri 10/33:45 pmPHL - IDA

1 stop7h 07mUnited Airlines

Deal found 8/12

$430

Wed 10/16:13 amIDA - PHL

1 stop9h 44mAlaska Airlines

Fri 10/36:57 pmPHL - IDA

1 stop22h 41mAlaska Airlines

Deal found 8/12

$398

Wed 10/86:44 amIDA - PHL

1 stop8h 41mAmerican Airlines

Thu 10/167:38 amPHL - IDA

1 stop6h 47mAmerican Airlines

Deal found 8/12

$425

Fri 2/64:00 pmIDA - PHL

1 stop23h 31mAlaska Airlines

Mon 2/96:35 pmPHL - IDA

1 stop22h 48mAlaska Airlines

Deal found 8/13

$398

Last-minute flights from Idaho Falls to Philadelphia
Discover last-minute flight deals from Idaho Falls to Philadelphia. Data last updated August 14, 2025 and is based on user searches.

Fri 8/158:31 pmIDA - PHL

2 stops34h 38mMultiple Airlines

Sun 8/249:00 amPHL - IDA

1 stop27h 51mMultiple Airlines

Deal found 8/12

$559

Fri 8/1510:45 amIDA - PHL

2 stops11h 45mUnited Airlines

Sun 8/246:30 amPHL - IDA

2 stops12h 45mUnited Airlines

Deal found 8/12

$646

Mon 8/186:52 pmIDA - PHL

1 stop8h 53mDelta

Wed 8/207:00 amPHL - IDA

1 stop9h 19mDelta

Deal found 8/14

$711

Mon 8/1810:45 amIDA - PHL

2 stops11h 45mUnited Airlines

Wed 8/206:30 amPHL - IDA

2 stops10h 59mUnited Airlines

Deal found 8/14

$850

Wed 8/2710:56 amIDA - PHL

2 stops11h 24mUnited Airlines

Sun 8/319:55 amPHL - IDA

1 stop9h 20mUnited Airlines

Deal found 8/12

$466

Tue 9/96:00 amIDA - PHL

2 stops10h 04mDelta

Tue 9/167:00 amPHL - IDA

1 stop7h 26mDelta

Deal found 8/14

$484

One-way flights from Idaho Falls to Philadelphia
Search for one-way flight options from Idaho Falls to Philadelphia. Find affordable one-way fares based on user searches. Data last updated August 14, 2025.

Wed 10/86:44 amIDA - PHL

1 stop8h 41mAmerican Airlines

Deal found 8/12

$226

Sat 9/135:00 amIDA - PHL

1 stop8h 59mUnited Airlines

Deal found 8/14

$245

Wed 8/206:52 pmIDA - PHL

1 stop8h 53mDelta

Deal found 8/13

$281

Wed 8/2010:56 amIDA - PHL

2 stops11h 24mUnited Airlines

Deal found 8/13

$286

Wed 10/86:00 amIDA - PHL

2 stops14h 25mAlaska Airlines

Deal found 8/12

$374

Wed 10/86:53 pmIDA - PHL

2 stops12h 37mDelta

Deal found 8/14

$375

Wed 10/85:56 pmIDA - PHL

3 stops28h 49mUnited Airlines

Deal found 8/14

$495

Cheapflights Fare Finder

Use the filters below to find and compare flights from Idaho Falls to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Fri 10/17

6:53 pm-5:50 am

1 stop8h 57m

Philadelphia

Tue 10/21

7:05 am-12:33 pm

1 stop7h 28m

$369

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Wed 11/12

3:50 pm-5:42 am

1 stop11h 52m

Philadelphia

Mon 11/17

7:12 pm-3:13 pm

1 stop22h 01m

$388

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Wed 10/1

6:13 am-5:57 pm

1 stop9h 44m

Philadelphia

Fri 10/3

6:57 pm-3:38 pm

1 stop22h 41m

$398

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Fri 2/6

4:00 pm-5:31 pm

1 stop23h 31m

Philadelphia

Mon 2/9

6:35 pm-3:23 pm

1 stop22h 48m

$398

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Sun 10/19

1:11 pm-12:16 am

1 stop9h 05m

Philadelphia

Mon 10/27

7:38 am-12:25 pm

1 stop6h 47m

$399

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Wed 10/8

6:44 am-5:25 pm

1 stop8h 41m

Philadelphia

Thu 10/16

7:38 am-12:25 pm

1 stop6h 47m

$425

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Wed 10/1

10:50 am-12:45 am

2 stops11h 55m

Philadelphia

Fri 10/3

3:45 pm-8:52 pm

1 stop7h 07m

$430

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Wed 10/8

6:44 am-5:25 pm

1 stop8h 41m

$226

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Sat 9/13

5:00 am-3:59 pm

1 stop8h 59m

$245

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Wed 8/20

6:52 pm-5:45 am

1 stop8h 53m

$281

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 12 results

Best time to book a flight from Idaho Falls to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Idaho Falls with our price prediction graph.

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 Idaho Falls to Philadelphia

What is the cheapest month to book a flight from Idaho Falls to Philadelphia?

Currently, August is the cheapest month in which you can book a flight from Idaho Falls to Philadelphia (average of $236). Flying from Idaho Falls to Philadelphia in March is currently the most expensive (average of $295). 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.

What is the cheapest time of day to fly from IDA to PHL?

A simple way to save on the total cost of your ticket is to fly from Idaho Falls to Philadelphia at noon. If you’re flexible enough to do this you can expect to save up to 41% on your trip compared to booking a flight in the morning.

How much does it cost to fly round-trip from Idaho Falls to Philadelphia?

Reviews of airlines servicing Philadelphia

Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Idaho Falls to Philadelphia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,980 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,916 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines flying from Idaho Falls to Philadelphia round-trip?
Currently priced at $259, Delta will fly you from Idaho Falls to Philadelphia and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $454 and $502, respectively. These flights start at 61% lower than the current average price 3 months from now.
Can I find deals for flights from Idaho Falls to Philadelphia that include hotel bookings?
Yes. In addition to deals on Idaho Falls to Philadelphia flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Idaho Falls to Philadelphia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho Falls to Philadelphia.
Can I find deals for business class flights from Idaho Falls to Philadelphia?
Yes. Cheapflights offers flight deals from Idaho Falls to Philadelphia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Idaho Falls to Philadelphia?
Currently, August is the cheapest month in which you can book a flight from Idaho Falls to Philadelphia (average of $236). Flying from Idaho Falls to Philadelphia in March is currently the most expensive (average of $295). 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.

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Top 3 airlines flying from Idaho Falls to Philadelphia

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$259	Average$488	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$454	Average$595	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$502	Average$790	FlexibilityNo cancel fee	On-time69%

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$226+ Cheap flights from Idaho Falls to Philadelphia (IDA - PHL)

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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Idaho Falls to Philadelphia with Cheapflights

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Cheap flight deals from Idaho Falls to Philadelphia

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Find flight deals from Idaho Falls to Philadelphia

Cheapest flights from Idaho Falls to PhiladelphiaExplore the most affordable flight options available from Idaho Falls to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Explore the most affordable flight options available from Idaho Falls to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Idaho Falls to Philadelphia that are best for you.

Best time to book a flight from Idaho Falls to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Idaho Falls with our price prediction graph.

Cheapflights Insights

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

What is the cheapest month to book a flight from Idaho Falls to Philadelphia?

What is the cheapest time of day to fly from IDA to PHL?

Find hourly flight availability from Idaho Falls to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

How much does it cost to fly round-trip from Idaho Falls to Philadelphia?

Reviews of airlines servicing Philadelphia

Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Idaho Falls to Philadelphia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Idaho Falls to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Idaho Falls to Philadelphia round-trip?

Can I find deals for flights from Idaho Falls to Philadelphia that include hotel bookings?

How can I find direct flights from Idaho Falls to Philadelphia?

Can I find deals for business class flights from Idaho Falls to Philadelphia?

What is the cheapest month to book a flight from Idaho Falls to Philadelphia?

Traveling to a place near Philadelphia?

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Alternative routes for Idaho Falls to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Idaho Falls to Philadelphia

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Cheapest flights from Idaho Falls to Philadelphia
Explore the most affordable flight options available from Idaho Falls to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.