How many flights depart from Philadelphia to Idaho on average per week?

11 flights are operational weekly from Philadelphia to Idaho as of June 2026. The most popular departure day for this route is Mon, with 18% of flights per week taking off on this day.

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

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

What airlines fly to Idaho?

Delta, American Airlines and United 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 34% 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.

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 5 as of June 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.

$126 Cheap Flights from Philadelphia to Idaho in 2026

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.

5:40 am - 11:40 am

PHL

GEG

9h 00m

1 stop

2:26 pm - 11:21 pm

GEG

PHL

5h 55m

1 stop

$279Delta

Sat, Jul 4 - Sat, Jul 11

5:40 am - 10:58 am

PHL

BOI

7h 18m

1 stop

7:28 pm - 5:29 am

BOI

PHL

8h 01m

1 stop

$279Delta

Fri, Jul 3 - Tue, Jul 7

6:55 pm - 11:55 pm

PHL

GEG

8h 00m

1 stop

5:37 pm - 5:29 am

GEG

PHL

8h 52m

1 stop

$299Delta

Thu, Jul 23 - Tue, Jul 28

5:46 pm - 11:48 pm

PHL

BOI

8h 02m

1 stop

6:13 pm - 6:13 am

BOI

PHL

10h 00m

1 stop

$307Alaska Airlines

Mon, Jun 29 - Fri, Jul 3

1:30 pm - 9:14 pm

PHL

GEG

10h 44m

2 stops

1:37 pm - 11:45 pm

GEG

PHL

7h 08m

1 stop

$316United Airlines

Sat, Sep 12 - Sat, Sep 19

5:46 pm - 10:59 pm

PHL

GEG

8h 13m

1 stop

12:31 pm - 5:38 am

GEG

PHL

14h 07m

1 stop

$317Multiple Airlines

Tue, Jun 23 - Mon, Jun 29

9:45 am - 4:50 pm

PHL

BOI

9h 05m

1 stop

3:10 pm - 12:59 am

BOI

PHL

7h 49m

1 stop

$324American Airlines

Wed, Jul 15 - Mon, Jul 20

12:57 pm - 8:42 pm

PHL

GEG

10h 45m

1 stop

5:40 am - 6:48 pm

GEG

PHL

10h 08m

1 stop

$329American Airlines

Sat, Aug 22 - Sat, Aug 29

9:34 am - 5:49 pm

PHL

JAC

10h 15m

2 stops

2:48 pm - 11:29 pm

JAC

PHL

6h 41m

1 stop

$331United Airlines

Tue, Oct 13 - Tue, Oct 20

7:00 am - 3:35 pm

PHL

IDA

10h 35m

1 stop

6:09 am - 5:39 pm

IDA

PHL

9h 30m

1 stop

$384Alaska Airlines

Tue, Oct 27 - Sat, Oct 31

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Delta flights from Philadelphia to Idaho

Our best Delta deals on Philadelphia to Idaho flight tickets

Delta

Jul 3

PHL5:40 amPhiladelphia

7h 18m

1 stop

BOI10:58 amBoise Air Term. Gowen Fld

Jul 7

BOI7:28 pmBoise Air Term. Gowen Fld

8h 01m

1 stop

PHL5:29 amPhiladelphia

$279

Delta

Jul 23

PHL6:55 pmPhiladelphia

8h 00m

1 stop

GEG11:55 pmSpokane

Jul 28

GEG5:37 pmSpokane

8h 52m

1 stop

PHL5:29 amPhiladelphia

$299

Delta

Aug 22

PHL7:05 amPhiladelphia

10h 13m

1 stop

BOI3:18 pmBoise Air Term. Gowen Fld

Aug 29

BOI5:30 amBoise Air Term. Gowen Fld

7h 04m

1 stop

PHL2:34 pmPhiladelphia

$301

Southwest flights from Philadelphia to Idaho

Our best Southwest deals on Philadelphia to Idaho flight tickets

Southwest

Aug 12

PHL5:10 pmPhiladelphia

8h 15m

1 stop

GEG10:25 pmSpokane

Aug 21

GEG6:55 amSpokane

11h 10m

2 stops

PHL9:05 pmPhiladelphia

$339

Southwest

Aug 17

PHL4:05 pmPhiladelphia

9h 30m

2 stops

BOI11:35 pmBoise Air Term. Gowen Fld

Aug 25

BOI2:40 pmBoise Air Term. Gowen Fld

7h 10m

1 stop

PHL11:50 pmPhiladelphia

$355

Southwest

Aug 4

PHL3:00 pmPhiladelphia

10h 20m

2 stops

BOI11:20 pmBoise Air Term. Gowen Fld

Aug 11

BOI12:35 pmBoise Air Term. Gowen Fld

9h 15m

1 stop

PHL11:50 pmPhiladelphia

$364

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Sat 7/4

5:40 am-11:40 am

1 stop9h 00m

Spokane

Sat 7/11

2:26 pm-11:21 pm

1 stop5h 55m

$279

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Fri 7/3

5:40 am-10:58 am

1 stop7h 18m

Boise Air Term. Gowen Fld

Tue 7/7

7:28 pm-5:29 am

1 stop8h 01m

$279

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Thu 7/23

6:55 pm-11:55 pm

1 stop8h 00m

Spokane

Tue 7/28

5:37 pm-5:29 am

1 stop8h 52m

$299

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Mon 6/29

5:46 pm-11:48 pm

1 stop8h 02m

Boise Air Term. Gowen Fld

Fri 7/3

6:13 pm-6:13 am

1 stop10h 00m

$307

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Sat 9/12

1:30 pm-9:14 pm

2 stops10h 44m

Spokane

Sat 9/19

1:37 pm-11:45 pm

1 stop7h 08m

$316

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Tue 6/23

5:46 pm-10:59 pm

1 stop8h 13m

Spokane

Mon 6/29

12:31 pm-5:38 am

1 stop14h 07m

$317

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Wed 7/15

9:45 am-4:50 pm

1 stop9h 05m

Boise Air Term. Gowen Fld

Mon 7/20

3:10 pm-12:59 am

1 stop7h 49m

$324

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Sat 8/22

12:57 pm-8:42 pm

1 stop10h 45m

Spokane

Sat 8/29

5:40 am-6:48 pm

1 stop10h 08m

$329

PhiladelphiaJackson

PHL - JAC

PHLJAC

Philadelphia

Tue 10/13

9:34 am-5:49 pm

2 stops10h 15m

Jackson Hole

Tue 10/20

2:48 pm-11:29 pm

1 stop6h 41m

$331

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Tue 10/27

7:00 am-3:35 pm

1 stop10h 35m

Idaho Falls Fanning Field

Sat 10/31

6:09 am-5:39 pm

1 stop9h 30m

$384

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

Other information

What is the cheapest month to fly to Idaho?

In general, May 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 $148. If you don’t want to visit Idaho in May, then you should wait until August to fly from Philadelphia, when ticket prices are also cheap, with an average price of $173.

What is the cheapest Philadelphia to Idaho flight route?

Fly from Philadelphia to Boise Air Term. Gowen Fld for the best Philadelphia - Idaho flight prices

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 $456 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 $298 on momondo.

What cabin class options are available on Philadelphia to Idaho flights?

There is only 1 cabin class available to choose from on Philadelphia to Idaho flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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 44m
Direct flights	None

The fastest flight from Philadelphia to Idaho takes 6h 44m

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 5 as of June 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 $175	Free Cancellation	Rating 7.8 8,420 reviews	Search Delta flights
American Airlines	PriceFrom $283	Free Cancellation	Rating 7.1 11,715 reviews	Search American Airlines flights
United Airlines	PriceFrom $336	Free Cancellation	Rating 7.4 9,865 reviews	Search United Airlines flights
Southwest	PriceFrom $350	Free Cancellation	Rating 7.9 4,241 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.