What airlines fly to Idaho?

Delta, United Airlines and American Airlines are the top three most popular airlines that fly to Idaho from Philadelphia according to our data. Delta is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 5 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Philadelphia to Idaho?

Delta, Alaska Airlines, and American Airlines are the most popular carriers operating from Philadelphia to Idaho

When did momondo last update prices for flights from Philadelphia Airport to Idaho?

Prices for flights from Philadelphia Airport to Idaho are updated daily.

How many operators does momondo search for flights from Philadelphia Airport to Idaho?

The number of operators available for flights from Philadelphia Airport to Idaho is 4 as of November 2026.

How old do you have to be to fly from Philadelphia Airport to Idaho?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Philadelphia Airport to Idaho.

What documentation or ID do you need to fly to Idaho?

The necessary travel and health documents for your Idaho trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$156 Cheap Flights from Philadelphia to Idaho in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Philadelphia to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:00 am - 12:44 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

9h 44m1 stop Dallas/Fort Worth

1:35 pm - 10:37 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

7h 02m1 stop Dallas/Fort Worth

$311American Airlines

Fri, Jan 22 - Tue, Jan 26

5:00 am - 1:55 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

10h 55m1 stop Dallas/Fort Worth

1:39 pm - 12:24 amBOI Boise Air Term. Gowen Fld-PHL Philadelphia

8h 45m1 stop Chicago O'Hare Intl

$311American Airlines

Sat, Dec 5 - Sat, Dec 12

6:00 am - 2:13 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

10h 13m1 stop Minneapolis St Paul

3:08 pm - 11:46 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

6h 38m1 stop Minneapolis St Paul

$311Delta

Sat, Feb 13 - Sat, Feb 20

7:10 am - 12:11 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

7h 01m1 stop Salt Lake City

1:07 pm - 11:54 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

8h 47m2 stops Salt Lake City Minneapolis St Paul

$316Delta

Sat, Dec 5 - Sat, Dec 12

2:15 pm - 11:05 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

10h 50m2 stops Lambert-St Louis Denver Intl

8:15 am - 4:50 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

6h 35m1 stop Denver Intl

$316Southwest

Thu, Jan 28 - Sat, Jan 30

5:05 am - 10:40 amPHL Philadelphia-BOI Boise Air Term. Gowen Fld

7h 35m1 stop Denver Intl

5:05 am - 5:15 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

10h 10m2 stops Phoenix Sky Harbor Intl Dallas Love Field

$316Southwest

Sat, Feb 13 - Sat, Feb 20

7:00 am - 2:19 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

9h 19m1 stop Seattle/Tacoma Intl

7:45 pm - 5:40 amBOI Boise Air Term. Gowen Fld-PHL Philadelphia

7h 55m1 stop Seattle/Tacoma Intl

$355Alaska Airlines

Sat, Dec 12 - Mon, Dec 14

7:41 am - 1:37 pmPHL Philadelphia-IDA Idaho Falls Fanning Field

7h 56m1 stop Denver Intl

2:40 pm - 11:41 pmIDA Idaho Falls Fanning Field-PHL Philadelphia

7h 01m1 stop Denver Intl

$387United Airlines

Fri, Dec 4 - Sun, Dec 6

6:24 am - 1:37 pmPHL Philadelphia-IDA Idaho Falls Fanning Field

9h 13m2 stops Chicago O'Hare Intl Denver Intl

2:40 pm - 11:41 pmIDA Idaho Falls Fanning Field-PHL Philadelphia

7h 01m1 stop Denver Intl

$409United Airlines

Fri, Dec 4 - Sun, Dec 6

7:02 am - 3:18 pmPHL Philadelphia-IDA Idaho Falls Fanning Field

10h 16m1 stop Seattle/Tacoma Intl

6:04 am - 4:45 pmIDA Idaho Falls Fanning Field-PHL Philadelphia

8h 41m1 stop Seattle/Tacoma Intl

$449Alaska Airlines

Fri, Nov 13 - Tue, Nov 17

Cheap last minute flights

Enter your travel dates to find the best prices.

10:45 am - 7:24 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

10h 39m1 stop Phoenix Sky Harbor Intl

8:00 am - 7:50 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

9h 50m1 stop Phoenix Sky Harbor Intl

$695American Airlines

Wed, Nov 4 - Fri, Nov 6

7:00 am - 1:51 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

8h 51m1 stop Dallas/Fort Worth

1:24 pm - 10:53 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

7h 29m1 stop Chicago O'Hare Intl

$695American Airlines

Thu, Nov 5 - Sat, Nov 7

6:00 am - 1:34 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

9h 34m1 stop Atlanta Hartsfield-Jackson

3:00 pm - 11:50 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

6h 50m1 stop Minneapolis St Paul

$695Delta

Wed, Nov 4 - Fri, Nov 6

7:45 am - 1:45 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

8h 00m1 stop Denver Intl

12:00 pm - 10:49 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

8h 49m1 stop San Francisco

$695United Airlines

Wed, Nov 4 - Fri, Nov 6

3:35 pm - 10:59 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

9h 24m1 stop Denver Intl

2:51 pm - 11:39 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

6h 48m1 stop Denver Intl

$695United Airlines

Thu, Nov 5 - Sat, Nov 7

5:45 am - 3:20 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

11h 35m2 stops Minneapolis St Paul Seattle/Tacoma Intl

3:00 pm - 11:50 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

6h 50m1 stop Minneapolis St Paul

$700Delta

Wed, Nov 4 - Fri, Nov 6

5:00 am - 11:00 amPHL Philadelphia-BOI Boise Air Term. Gowen Fld

8h 00m1 stop Denver Intl

12:30 pm - 12:10 amBOI Boise Air Term. Gowen Fld-PHL Philadelphia

9h 40m2 stops Phoenix Sky Harbor Intl Denver Intl

$700Southwest

Wed, Nov 4 - Fri, Nov 6

12:32 pm - 10:08 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

11h 36m2 stops Detroit Metropolitan Wayne County Seattle/Tacoma Intl

5:30 am - 2:10 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

6h 40m1 stop Minneapolis St Paul

$700Delta

Thu, Nov 5 - Sat, Nov 7

2:45 pm - 10:35 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

9h 50m2 stops Lambert-St Louis Denver Intl

5:00 am - 4:35 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

9h 35m2 stops Phoenix Sky Harbor Intl Denver Intl

$706Southwest

Wed, Nov 4 - Fri, Nov 6

6:15 am - 11:31 amPHL Philadelphia-BOI Boise Air Term. Gowen Fld

7h 16m1 stop Chicago O'Hare Intl

2:51 pm - 11:39 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

6h 48m1 stop Denver Intl

$825United Airlines

Thu, Nov 5 - Sat, Nov 7

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United Airlines flights from Philadelphia to Idaho

Our best United Airlines deals on Philadelphia to Idaho flight tickets

United Airlines

Dec 4

PHL7:41 amPhiladelphia

7h 56m

1 stop

IDA1:37 pmIdaho Falls Fanning Field

Dec 6

IDA2:40 pmIdaho Falls Fanning Field

7h 01m

1 stop

PHL11:41 pmPhiladelphia

$387

United Airlines

Dec 4

PHL6:24 amPhiladelphia

9h 13m

2 stops

IDA1:37 pmIdaho Falls Fanning Field

Dec 6

IDA2:40 pmIdaho Falls Fanning Field

7h 01m

1 stop

PHL11:41 pmPhiladelphia

$409

United Airlines

Dec 12

PHL6:24 amPhiladelphia

9h 15m

2 stops

BOI1:39 pmBoise Air Term. Gowen Fld

Dec 14

BOI2:48 pmBoise Air Term. Gowen Fld

6h 53m

1 stop

PHL11:41 pmPhiladelphia

$446

Southwest flights from Philadelphia to Idaho

Our best Southwest deals on Philadelphia to Idaho flight tickets

Southwest

Feb 13

PHL12:05 pmPhiladelphia

11h 50m

2 stops

BOI9:55 pmBoise Air Term. Gowen Fld

Feb 20

BOI5:05 amBoise Air Term. Gowen Fld

10h 10m

2 stops

PHL5:15 pmPhiladelphia

$419

Southwest

Dec 1

PHL2:55 pmPhiladelphia

9h 40m

2 stops

BOI10:35 pmBoise Air Term. Gowen Fld

Dec 8

BOI1:05 pmBoise Air Term. Gowen Fld

8h 25m

1 stop

PHL11:30 pmPhiladelphia

$435

Southwest

Dec 25

PHL5:00 amPhiladelphia

8h 00m

1 stop

BOI11:00 amBoise Air Term. Gowen Fld

Jan 5

BOI5:45 amBoise Air Term. Gowen Fld

13h 45m

2 stops

PHL9:30 pmPhiladelphia

$459

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaBoise

PHL Philadelphia - BOI Boise Air Term. Gowen Fld

PHLBOI

Philadelphia

Fri 1/22

5:00 am-12:44 pm

1 stop9h 44m

Boise Air Term. Gowen Fld

Tue 1/26

1:35 pm-10:37 pm

1 stop7h 02m

$311

PhiladelphiaBoise

PHL Philadelphia - BOI Boise Air Term. Gowen Fld

PHLBOI

Philadelphia

Sat 12/5

5:00 am-1:55 pm

1 stop10h 55m

Boise Air Term. Gowen Fld

Sat 12/12

1:39 pm-12:24 am

1 stop8h 45m

$311

PhiladelphiaBoise

PHL Philadelphia - BOI Boise Air Term. Gowen Fld

PHLBOI

Philadelphia

Sat 2/13

6:00 am-2:13 pm

1 stop10h 13m

Boise Air Term. Gowen Fld

Sat 2/20

3:08 pm-11:46 pm

1 stop6h 38m

$311

PhiladelphiaBoise

PHL Philadelphia - BOI Boise Air Term. Gowen Fld

PHLBOI

Philadelphia

Sat 12/5

7:10 am-12:11 pm

1 stop7h 01m

Boise Air Term. Gowen Fld

Sat 12/12

1:07 pm-11:54 pm

2 stops8h 47m

$316

PhiladelphiaBoise

PHL Philadelphia - BOI Boise Air Term. Gowen Fld

PHLBOI

Philadelphia

Thu 1/28

2:15 pm-11:05 pm

2 stops10h 50m

Boise Air Term. Gowen Fld

Sat 1/30

8:15 am-4:50 pm

1 stop6h 35m

$316

PhiladelphiaBoise

PHL Philadelphia - BOI Boise Air Term. Gowen Fld

PHLBOI

Philadelphia

Sat 2/13

5:05 am-10:40 am

1 stop7h 35m

Boise Air Term. Gowen Fld

Sat 2/20

5:05 am-5:15 pm

2 stops10h 10m

$316

PhiladelphiaBoise

PHL Philadelphia - BOI Boise Air Term. Gowen Fld

PHLBOI

Philadelphia

Sat 12/12

7:00 am-2:19 pm

1 stop9h 19m

Boise Air Term. Gowen Fld

Mon 12/14

7:45 pm-5:40 am

1 stop7h 55m

$355

Quickest round-trip

PhiladelphiaIdaho Falls

PHL Philadelphia - IDA Idaho Falls Fanning Field

PHLIDA

Philadelphia

Fri 12/4

7:41 am-1:37 pm

1 stop7h 56m

Idaho Falls Fanning Field

Sun 12/6

2:40 pm-11:41 pm

1 stop7h 01m

$387

PhiladelphiaIdaho Falls

PHL Philadelphia - IDA Idaho Falls Fanning Field

PHLIDA

Philadelphia

Fri 12/4

6:24 am-1:37 pm

2 stops9h 13m

Idaho Falls Fanning Field

Sun 12/6

2:40 pm-11:41 pm

1 stop7h 01m

$409

PhiladelphiaIdaho Falls

PHL Philadelphia - IDA Idaho Falls Fanning Field

PHLIDA

Philadelphia

Fri 11/13

7:02 am-3:18 pm

1 stop10h 16m

Idaho Falls Fanning Field

Tue 11/17

6:04 am-4:45 pm

1 stop8h 41m

$449

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Philadelphia to Idaho

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Idaho?

In general, November is the cheapest month to fly from Philadelphia to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $405. If you don’t want to visit Idaho in November, then you should wait until April to fly from Philadelphia, when ticket prices are also cheap, with an average price of $440.

How far in advance should I book a flight from Philadelphia to Idaho?

You are more likely to see cheaper flights to Idaho from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $474 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from Philadelphia for as low as $287 on momondo.

Can stopping save me money on Philadelphia to Idaho flights?

You could potentially save up to 81% on your flight if you consider stops on a Philadelphia to Idaho flight.

Cheap Philadelphia to Idaho flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Idaho

Best Price Found	$156
Fastest flight time	6h 48m
Direct flights	None

The best one-way flight to Idaho from Philadelphia in the past 72 hours is $156. The best round-trip flight deal from Philadelphia to Idaho found on momondo in the last 72 hours is $311.

The fastest flight from Philadelphia to Idaho takes 6h 48m

There are no direct flights from Philadelphia to Idaho. There are no popular flight routes from Philadelphia to Idaho.

Search flight deals

Frequently asked questions about flying from Philadelphia to Idaho

When did momondo last update prices for flights from Philadelphia Airport to Idaho?
Prices for flights from Philadelphia Airport to Idaho are updated daily.
How many operators does momondo search for flights from Philadelphia Airport to Idaho?
The number of operators available for flights from Philadelphia Airport to Idaho is 4 as of November 2026.
How old do you have to be to fly from Philadelphia Airport to Idaho?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Philadelphia Airport to Idaho.
What documentation or ID do you need to fly to Idaho?
The necessary travel and health documents for your Idaho trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Philadelphia to Idaho

Compare and see reviews for airlines that fly from Philadelphia to Idaho with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $200	Free Cancellation	Rating 7.8 8,696 reviews	Search Delta flights
American Airlines	PriceFrom $283	Free Cancellation	Rating 7.0 12,230 reviews	Search American Airlines flights
United Airlines	PriceFrom $310	Free Cancellation	Rating 7.3 10,460 reviews	Search United Airlines flights
Southwest	PriceFrom $326	Free Cancellation	Rating 8.0 4,215 reviews	Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to Idaho?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Philadelphia to Idaho. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Philadelphia to Idaho with flexible booking policies on momondo?

Flights from Philadelphia to Idaho with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Philadelphia to Idaho?

momondo provides multiple filters to help you find the best flight to Idaho from Philadelphia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Philadelphia to Idaho right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Philadelphia to Idaho flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.