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

3 flights are operational weekly from Philadelphia to Idaho as of September 2026. The most popular departure day for this route is Mon, with 33% of flights per week taking off on this day.

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

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

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 31% 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 September 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.

$104 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 - 11:24 amPHL Philadelphia-BOI Boise Air Term. Gowen Fld

8h 24m1 stop Dallas/Fort Worth

5:29 pm - 5:26 amBOI Boise Air Term. Gowen Fld-PHL Philadelphia

9h 57m1 stop Phoenix Sky Harbor Intl

$207American Airlines

Wed, Oct 14 - Wed, Oct 21

7:25 am - 2:33 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

9h 08m1 stop Chicago O'Hare Intl

2:41 pm - 12:25 amBOI Boise Air Term. Gowen Fld-PHL Philadelphia

7h 44m1 stop Dallas/Fort Worth

$207American Airlines

Wed, Oct 14 - Sat, Oct 17

7:16 pm - 11:59 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

6h 43m1 stop Minneapolis St Paul

5:59 pm - 5:43 amBOI Boise Air Term. Gowen Fld-PHL Philadelphia

9h 44m1 stop Seattle/Tacoma Intl

$207Delta

Wed, Oct 14 - Sat, Oct 17

5:20 am - 10:50 amPHL Philadelphia-BOI Boise Air Term. Gowen Fld

7h 30m1 stop Denver Intl

1:05 pm - 11:30 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

8h 25m1 stop Denver Intl

$207Southwest

Sat, Nov 7 - Tue, Nov 10

5:20 am - 10:50 amPHL Philadelphia-BOI Boise Air Term. Gowen Fld

7h 30m1 stop Denver Intl

11:40 am - 11:30 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

9h 50m2 stops Phoenix Sky Harbor Intl Denver Intl

$212Southwest

Sat, Nov 7 - Tue, Nov 10

6:40 pm - 12:04 amPHL Philadelphia-BOI Boise Air Term. Gowen Fld

7h 24m1 stop Salt Lake City

1:43 pm - 12:51 amBOI Boise Air Term. Gowen Fld-PHL Philadelphia

9h 08m1 stop Atlanta Hartsfield-Jackson

$220Delta

Tue, Jan 19 - Mon, Jan 25

7:02 am - 2:22 pmPHL Philadelphia-GEG Spokane

10h 20m1 stop Seattle/Tacoma Intl

4:39 pm - 5:32 amGEG Spokane-PHL Philadelphia

9h 53m1 stop Seattle/Tacoma Intl

$225Alaska Airlines

Tue, Nov 10 - Wed, Nov 11

6:41 pm - 9:56 amPHL Philadelphia-BOI Boise Air Term. Gowen Fld

17h 15m1 stop Seattle/Tacoma Intl

5:59 am - 3:14 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

7h 15m1 stop Portland

$233Alaska Airlines

Wed, Oct 14 - Sat, Oct 17

6:15 am - 12:29 pmPHL Philadelphia-GEG Spokane

9h 14m1 stop Chicago O'Hare Intl

5:00 am - 5:47 pmGEG Spokane-PHL Philadelphia

9h 47m2 stops Denver Intl Chicago O'Hare Intl

$258United Airlines

Wed, Nov 11 - Wed, Nov 18

6:15 am - 12:47 pmPHL Philadelphia-GEG Spokane

9h 32m2 stops Chicago O'Hare Intl Denver Intl

5:00 am - 5:47 pmGEG Spokane-PHL Philadelphia

9h 47m2 stops Denver Intl Chicago O'Hare Intl

$263United Airlines

Wed, Nov 11 - Wed, Nov 18

Cheap last minute flights

Enter your travel dates to find the best prices.

2:30 pm - 9:37 pmPHL Philadelphia-GEG Spokane

10h 07m1 stop Atlanta Hartsfield-Jackson

7:23 pm - 6:05 amGEG Spokane-PHL Philadelphia

7h 42m1 stop Salt Lake City

$360Delta

Thu, Sep 24 - Thu, Oct 22

5:20 am - 11:28 amPHL Philadelphia-GEG Spokane

9h 08m1 stop Atlanta Hartsfield-Jackson

12:38 pm - 12:40 amGEG Spokane-PHL Philadelphia

9h 02m1 stop Atlanta Hartsfield-Jackson

$429Delta

Tue, Sep 22 - Sat, Sep 26

2:45 pm - 10:30 pmPHL Philadelphia-GEG Spokane

10h 45m2 stops Lambert-St Louis Denver Intl

12:45 pm - 10:55 pmGEG Spokane-PHL Philadelphia

7h 10m1 stop Denver Intl

$434Southwest

Tue, Sep 22 - Sat, Sep 26

11:04 am - 9:14 pmPHL Philadelphia-GEG Spokane

13h 10m2 stops Chicago O'Hare Intl Denver Intl

5:00 am - 5:54 pmGEG Spokane-PHL Philadelphia

9h 54m2 stops Denver Intl Chicago O'Hare Intl

$439United Airlines

Tue, Sep 22 - Sat, Sep 26

2:05 pm - 10:45 pmPHL Philadelphia-GEG Spokane

11h 40m1 stop Chicago Midway

5:00 am - 7:00 pmGEG Spokane-PHL Philadelphia

11h 00m2 stops Las Vegas Harry Reid Intl Denver Intl

$510Southwest

Thu, Sep 24 - Thu, Oct 22

5:00 am - 11:45 amPHL Philadelphia-IDA Idaho Falls Fanning Field

8h 45m1 stop Dallas/Fort Worth

2:08 pm - 12:22 amIDA Idaho Falls Fanning Field-PHL Philadelphia

8h 14m1 stop Dallas/Fort Worth

$612American Airlines

Mon, Sep 21 - Wed, Sep 23

5:00 am - 11:45 amPHL Philadelphia-IDA Idaho Falls Fanning Field

8h 45m1 stop Dallas/Fort Worth

2:08 pm - 12:22 amIDA Idaho Falls Fanning Field-PHL Philadelphia

8h 14m1 stop Dallas/Fort Worth

$612American Airlines

Mon, Sep 21 - Wed, Sep 23

11:04 am - 9:18 pmPHL Philadelphia-IDA Idaho Falls Fanning Field

12h 14m2 stops Chicago O'Hare Intl Denver Intl

2:25 pm - 11:44 pmIDA Idaho Falls Fanning Field-PHL Philadelphia

7h 19m1 stop Denver Intl

$662United Airlines

Mon, Sep 21 - Wed, Sep 23

7:00 am - 3:30 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

10h 30m1 stop Seattle/Tacoma Intl

8:25 pm - 3:45 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

17h 20m1 stop Portland

$763Alaska Airlines

Thu, Sep 24 - Mon, Sep 28

4:48 pm - 3:20 pmPHL Philadelphia-IDA Idaho Falls Fanning Field

24h 32m2 stops Portland Seattle/Tacoma Intl

3:57 pm - 5:40 amIDA Idaho Falls Fanning Field-PHL Philadelphia

11h 43m2 stops Portland Seattle/Tacoma Intl

$1,364Alaska Airlines

Mon, Sep 21 - Wed, Sep 23

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Southwest flights from Philadelphia to Idaho

Our best Southwest deals on Philadelphia to Idaho flight tickets

Southwest

Nov 7

PHL5:20 amPhiladelphia

7h 30m

1 stop

BOI10:50 amBoise Air Term. Gowen Fld

Nov 10

BOI11:40 amBoise Air Term. Gowen Fld

9h 50m

2 stops

PHL11:30 pmPhiladelphia

$212

Southwest

Jan 19

PHL5:45 amPhiladelphia

12h 20m

2 stops

BOI4:05 pmBoise Air Term. Gowen Fld

Jan 25

BOI2:30 pmBoise Air Term. Gowen Fld

6h 55m

1 stop

PHL11:25 pmPhiladelphia

$243

Southwest

Oct 23

PHL5:10 pmPhiladelphia

9h 55m

2 stops

BOI1:05 amBoise Air Term. Gowen Fld

Oct 27

BOI3:20 pmBoise Air Term. Gowen Fld

6h 15m

1 stop

PHL11:35 pmPhiladelphia

$261

Delta flights from Philadelphia to Idaho

Our best Delta deals on Philadelphia to Idaho flight tickets

Delta

Oct 14

PHL7:16 pmPhiladelphia

6h 43m

1 stop

BOI11:59 pmBoise Air Term. Gowen Fld

Oct 17

BOI5:59 pmBoise Air Term. Gowen Fld

9h 44m

1 stop

PHL5:43 amPhiladelphia

$207

Delta

Jan 19

PHL6:40 pmPhiladelphia

7h 24m

1 stop

BOI12:04 amBoise Air Term. Gowen Fld

Jan 25

BOI1:43 pmBoise Air Term. Gowen Fld

9h 08m

1 stop

PHL12:51 amPhiladelphia

$220

Delta

Nov 3

PHL3:05 pmPhiladelphia

9h 20m

1 stop

BOI10:25 pmBoise Air Term. Gowen Fld

Nov 8

BOI7:13 pmBoise Air Term. Gowen Fld

8h 31m

1 stop

PHL5:44 amPhiladelphia

$288

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaBoise

PHL Philadelphia - BOI Boise Air Term. Gowen Fld

PHLBOI

Philadelphia

Wed 10/14

5:00 am-11:24 am

1 stop8h 24m

Boise Air Term. Gowen Fld

Wed 10/21

5:29 pm-5:26 am

1 stop9h 57m

$207

PhiladelphiaBoise

PHL Philadelphia - BOI Boise Air Term. Gowen Fld

PHLBOI

Philadelphia

Wed 10/14

7:25 am-2:33 pm

1 stop9h 08m

Boise Air Term. Gowen Fld

Sat 10/17

2:41 pm-12:25 am

1 stop7h 44m

$207

PhiladelphiaBoise

PHL Philadelphia - BOI Boise Air Term. Gowen Fld

PHLBOI

Philadelphia

Wed 10/14

7:16 pm-11:59 pm

1 stop6h 43m

Boise Air Term. Gowen Fld

Sat 10/17

5:59 pm-5:43 am

1 stop9h 44m

$207

Quickest round-trip

PhiladelphiaBoise

PHL Philadelphia - BOI Boise Air Term. Gowen Fld

PHLBOI

Philadelphia

Sat 11/7

5:20 am-10:50 am

1 stop7h 30m

Boise Air Term. Gowen Fld

Tue 11/10

1:05 pm-11:30 pm

1 stop8h 25m

$207

PhiladelphiaBoise

PHL Philadelphia - BOI Boise Air Term. Gowen Fld

PHLBOI

Philadelphia

Sat 11/7

5:20 am-10:50 am

1 stop7h 30m

Boise Air Term. Gowen Fld

Tue 11/10

11:40 am-11:30 pm

2 stops9h 50m

$212

PhiladelphiaBoise

PHL Philadelphia - BOI Boise Air Term. Gowen Fld

PHLBOI

Philadelphia

Tue 1/19

6:40 pm-12:04 am

1 stop7h 24m

Boise Air Term. Gowen Fld

Mon 1/25

1:43 pm-12:51 am

1 stop9h 08m

$220

PhiladelphiaSpokane

PHL Philadelphia - GEG Spokane

PHLGEG

Philadelphia

Tue 11/10

7:02 am-2:22 pm

1 stop10h 20m

Spokane

Wed 11/11

4:39 pm-5:32 am

1 stop9h 53m

$225

PhiladelphiaBoise

PHL Philadelphia - BOI Boise Air Term. Gowen Fld

PHLBOI

Philadelphia

Wed 10/14

6:41 pm-9:56 am

1 stop17h 15m

Boise Air Term. Gowen Fld

Sat 10/17

5:59 am-3:14 pm

1 stop7h 15m

$233

PhiladelphiaSpokane

PHL Philadelphia - GEG Spokane

PHLGEG

Philadelphia

Wed 11/11

6:15 am-12:29 pm

1 stop9h 14m

Spokane

Wed 11/18

5:00 am-5:47 pm

2 stops9h 47m

$258

PhiladelphiaSpokane

PHL Philadelphia - GEG Spokane

PHLGEG

Philadelphia

Wed 11/11

6:15 am-12:47 pm

2 stops9h 32m

Spokane

Wed 11/18

5:00 am-5:47 pm

2 stops9h 47m

$263

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, April 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 $423. If you don’t want to visit Idaho in April, then you should wait until May to fly from Philadelphia, when ticket prices are also cheap, with an average price of $450.

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 $514 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 83% 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	$104
Fastest flight time	6h 43m
Direct flights	None

The best one-way flight to Idaho from Philadelphia in the past 72 hours is $104. The best round-trip flight deal from Philadelphia to Idaho found on momondo in the last 72 hours is $207.

The fastest flight from Philadelphia to Idaho takes 6h 43m

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 September 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 8,586 reviews	Search Delta flights
American Airlines	PriceFrom $297	Free Cancellation	Rating 7.1 12,080 reviews	Search American Airlines flights
United Airlines	PriceFrom $318	Free Cancellation	Rating 7.4 10,226 reviews	Search United Airlines flights
Southwest	PriceFrom $381	Free Cancellation	Rating 8.0 4,192 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.