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 40% 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?

Alaska Airlines, Delta, and Frontier 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 January 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.

$150 Cheap Flights from Philadelphia to Idaho in 2026

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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.

3:36 pm - 10:25 pm

PHL

BOI

8h 49m

1 stop

3:01 pm - 11:59 pm

BOI

PHL

6h 58m

1 stop

$257Delta

Wed, Mar 11 - Wed, Apr 1

6:05 am - 2:04 pm

PHL

BOI

9h 59m

2 stops

3:01 pm - 11:59 pm

BOI

PHL

6h 58m

1 stop

$262Delta

Tue, Mar 10 - Wed, Apr 1

5:00 am - 12:38 pm

PHL

JAC

9h 38m

1 stop

12:28 pm - 11:50 pm

JAC

PHL

9h 22m

1 stop

$289American Airlines

Sun, Feb 22 - Sat, Feb 28

6:17 am - 3:24 pm

PHL

JAC

11h 07m

2 stops

2:30 pm - 11:43 pm

JAC

PHL

7h 13m

1 stop

$294United Airlines

Sat, Apr 25 - Sat, May 2

7:05 am - 1:03 pm

PHL

BOI

7h 58m

1 stop

1:29 pm - 11:58 pm

BOI

PHL

8h 29m

1 stop

$296American Airlines

Tue, May 5 - Tue, May 12

10:00 am - 8:53 pm

PHL

JAC

12h 53m

2 stops

7:00 am - 9:33 pm

JAC

PHL

12h 33m

2 stops

$300United Airlines

Sat, Apr 25 - Sat, May 2

7:22 am - 3:33 pm

PHL

BOI

10h 11m

1 stop

6:08 pm - 6:02 am

BOI

PHL

9h 54m

1 stop

$337Alaska Airlines

Tue, May 5 - Tue, May 12

6:58 pm - 9:42 am

PHL

BOI

16h 44m

1 stop

2:57 pm - 6:02 am

BOI

PHL

13h 05m

1 stop

$347Alaska Airlines

Fri, May 8 - Tue, May 12

5:20 am - 9:55 am

PHL

GEG

7h 35m

1 stop

2:55 pm - 12:55 am

GEG

PHL

7h 00m

1 stop

$361Southwest

Thu, Mar 5 - Mon, Mar 9

5:00 pm - 9:45 pm

PHL

GEG

7h 45m

1 stop

5:00 am - 3:05 pm

GEG

PHL

7h 05m

1 stop

$377Southwest

Wed, Feb 25 - Sun, Mar 1

Delta flights from Philadelphia to Idaho

Our best Delta deals on Philadelphia to Idaho flight tickets

Delta

Mar 11

PHL3:36 pmPhiladelphia

8h 49m

1 stop

BOI10:25 pmBoise Air Term. Gowen Fld

Apr 1

BOI3:01 pmBoise Air Term. Gowen Fld

6h 58m

1 stop

PHL11:59 pmPhiladelphia

$257

Delta

Mar 10

PHL6:05 amPhiladelphia

9h 59m

2 stops

BOI2:04 pmBoise Air Term. Gowen Fld

Apr 1

BOI3:01 pmBoise Air Term. Gowen Fld

6h 58m

1 stop

PHL11:59 pmPhiladelphia

$262

Delta

Feb 25

PHL9:41 amPhiladelphia

10h 41m

2 stops

BOI6:22 pmBoise Air Term. Gowen Fld

Feb 26

BOI2:54 pmBoise Air Term. Gowen Fld

6h 50m

1 stop

PHL11:44 pmPhiladelphia

$302

Southwest flights from Philadelphia to Idaho

Our best Southwest deals on Philadelphia to Idaho flight tickets

Southwest

Mar 2

PHL5:00 amPhiladelphia

7h 20m

1 stop

BOI10:20 amBoise Air Term. Gowen Fld

Mar 7

BOI4:25 pmBoise Air Term. Gowen Fld

5h 55m

1 stop

PHL12:20 amPhiladelphia

$361

Southwest

Mar 11

PHL4:55 pmPhiladelphia

7h 25m

1 stop

BOI10:20 pmBoise Air Term. Gowen Fld

Mar 23

BOI4:20 pmBoise Air Term. Gowen Fld

6h 35m

1 stop

PHL12:55 amPhiladelphia

$372

Southwest

Mar 11

PHL2:10 pmPhiladelphia

10h 10m

2 stops

BOI10:20 pmBoise Air Term. Gowen Fld

Mar 23

BOI4:20 pmBoise Air Term. Gowen Fld

6h 35m

1 stop

PHL12:55 amPhiladelphia

$377

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Wed 3/11

3:36 pm-10:25 pm

1 stop8h 49m

Boise Air Term. Gowen Fld

Wed 4/1

3:01 pm-11:59 pm

1 stop6h 58m

$257

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 3/10

6:05 am-2:04 pm

2 stops9h 59m

Boise Air Term. Gowen Fld

Wed 4/1

3:01 pm-11:59 pm

1 stop6h 58m

$262

PhiladelphiaJackson

PHL - JAC

PHLJAC

Philadelphia

Sun 2/22

5:00 am-12:38 pm

1 stop9h 38m

Jackson Hole

Sat 2/28

12:28 pm-11:50 pm

1 stop9h 22m

$289

PhiladelphiaJackson

PHL - JAC

PHLJAC

Philadelphia

Sat 4/25

6:17 am-3:24 pm

2 stops11h 07m

Jackson Hole

Sat 5/2

2:30 pm-11:43 pm

1 stop7h 13m

$294

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 5/5

7:05 am-1:03 pm

1 stop7h 58m

Boise Air Term. Gowen Fld

Tue 5/12

1:29 pm-11:58 pm

1 stop8h 29m

$296

PhiladelphiaJackson

PHL - JAC

PHLJAC

Philadelphia

Sat 4/25

10:00 am-8:53 pm

2 stops12h 53m

Jackson Hole

Sat 5/2

7:00 am-9:33 pm

2 stops12h 33m

$300

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 5/5

7:22 am-3:33 pm

1 stop10h 11m

Boise Air Term. Gowen Fld

Tue 5/12

6:08 pm-6:02 am

1 stop9h 54m

$337

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Fri 5/8

6:58 pm-9:42 am

1 stop16h 44m

Boise Air Term. Gowen Fld

Tue 5/12

2:57 pm-6:02 am

1 stop13h 05m

$347

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Thu 3/5

5:20 am-9:55 am

1 stop7h 35m

Spokane

Mon 3/9

2:55 pm-12:55 am

1 stop7h 00m

$361

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Wed 2/25

5:00 pm-9:45 pm

1 stop7h 45m

Spokane

Sun 3/1

5:00 am-3:05 pm

1 stop7h 05m

$377

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, September 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 $359. If you don’t want to visit Idaho in September, then you should wait until August to fly from Philadelphia, when ticket prices are also cheap, with an average price of $365.

How far in advance should I book a flight 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 $470 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 $393 on momondo.

Can stopping save me money on Philadelphia to Idaho flights?

You could potentially save up to 16% 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

Fastest flight time	6h 28m
Direct flights	None

The fastest flight from Philadelphia to Idaho takes 6h 28m

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

Search flight deals

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 January 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 $199	Free Cancellation	Rating 7.9 8,128 reviews	Search Delta flights
American Airlines	PriceFrom $298	Free Cancellation	Rating 7.2 11,205 reviews	Search American Airlines flights
Southwest	PriceFrom $358	Free Cancellation	Rating 8.0 4,267 reviews	Search Southwest flights
United Airlines	PriceFrom $367	Free Cancellation	Rating 7.4 9,215 reviews	Search United Airlines 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.