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

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

What airlines fly to Philadelphia?

Delta, United Airlines and American Airlines are the top three most popular airlines that fly to Philadelphia from Idaho according to our data. Delta is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 5 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Philadelphia?

If you’re flying from a popular airport in Idaho, such as Twin Falls or Hailey, and flying into Philadelphia, then you can expect flight times to average 6h 21m and 6h 22m, respectively.

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

Prices for flights from Idaho to Philadelphia Airport refresh daily.

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

As of August 2026, there are 5 operators available to choose from for flights from Idaho to Philadelphia Airport.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Philadelphia Airport.

What documentation or ID do you need to fly to Philadelphia Airport?

The necessary travel and health documents for your Philadelphia Airport 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.

$155 Cheap Flights from Idaho to Philadelphia in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Idaho to Philadelphia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:37 am - 4:45 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

8h 08m1 stop Seattle/Tacoma Intl

7:02 am - 3:27 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

10h 25m1 stop Seattle/Tacoma Intl

$311Alaska Airlines

Thu, Nov 12 - Sat, Nov 14

4:18 pm - 5:41 amBOI Boise Air Term. Gowen Fld-PHL Philadelphia

11h 23m1 stop Seattle/Tacoma Intl

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

17h 15m1 stop Seattle/Tacoma Intl

$311Alaska Airlines

Tue, Oct 6 - Wed, Oct 21

7:10 pm - 7:39 amBOI Boise Air Term. Gowen Fld-PHL Philadelphia

10h 29m1 stop San Francisco

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

7h 16m1 stop Chicago O'Hare Intl

$311United Airlines

Tue, Oct 27 - Mon, Nov 2

1:24 pm - 10:44 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

7h 20m1 stop Chicago O'Hare Intl

7:26 am - 12:42 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

7h 16m1 stop Chicago O'Hare Intl

$311American Airlines

Thu, Dec 10 - Mon, Dec 14

3:24 pm - 12:11 amBOI Boise Air Term. Gowen Fld-PHL Philadelphia

6h 47m1 stop Chicago O'Hare Intl

5:00 am - 1:51 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

10h 51m1 stop Dallas/Fort Worth

$311American Airlines

Wed, Oct 21 - Tue, Oct 27

6:49 pm - 6:05 amBOI Boise Air Term. Gowen Fld-PHL Philadelphia

9h 16m1 stop Salt Lake City

5:45 am - 12:35 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

8h 50m1 stop Minneapolis St Paul

$311Delta

Thu, Oct 22 - Sat, Oct 24

5:59 pm - 5:44 amBOI Boise Air Term. Gowen Fld-PHL Philadelphia

9h 45m1 stop Seattle/Tacoma Intl

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

9h 34m1 stop Atlanta Hartsfield-Jackson

$311Delta

Mon, Nov 2 - Thu, Nov 5

12:31 pm - 11:30 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

8h 59m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

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

7h 16m1 stop Chicago O'Hare Intl

$316United Airlines

Mon, Nov 2 - Thu, Nov 5

11:55 am - 11:30 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

9h 35m2 stops Phoenix Sky Harbor Intl Denver Intl

6:00 am - 2:45 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

10h 45m2 stops Nashville Intl Denver Intl

$321Southwest

Wed, Oct 21 - Tue, Oct 27

11:55 am - 11:30 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

9h 35m2 stops Phoenix Sky Harbor Intl Denver Intl

5:30 am - 10:45 amPHL Philadelphia-BOI Boise Air Term. Gowen Fld

7h 15m1 stop Denver Intl

$334Southwest

Tue, Oct 6 - Wed, Oct 21

Cheap last minute flights

Enter your travel dates to find the best prices.

5:12 am - 3:45 pmGEG Spokane-PHL Philadelphia

7h 33m1 stop Portland

4:48 pm - 11:11 pmPHL Philadelphia-GEG Spokane

9h 23m1 stop Portland

$409Alaska Airlines

Tue, Aug 25 - Sun, Aug 30

10:55 am - 11:45 pmGEG Spokane-PHL Philadelphia

9h 50m1 stop Denver Intl

5:25 am - 10:15 amPHL Philadelphia-GEG Spokane

7h 50m1 stop Denver Intl

$409Southwest

Mon, Aug 24 - Mon, Aug 31

12:36 pm - 11:42 pmGEG Spokane-PHL Philadelphia

8h 06m1 stop Atlanta Hartsfield-Jackson

6:00 am - 11:21 amPHL Philadelphia-GEG Spokane

8h 21m1 stop Atlanta Hartsfield-Jackson

$409Delta

Tue, Aug 25 - Sat, Aug 29

10:56 pm - 11:01 amGEG Spokane-PHL Philadelphia

9h 05m1 stop Atlanta Hartsfield-Jackson

6:15 am - 11:21 amPHL Philadelphia-GEG Spokane

8h 06m1 stop Atlanta Hartsfield-Jackson

$409Delta

Mon, Aug 24 - Sun, Aug 30

6:00 am - 11:44 pmGEG Spokane-PHL Philadelphia

14h 44m2 stops San Francisco Denver Intl

8:00 am - 12:35 pmPHL Philadelphia-GEG Spokane

7h 35m1 stop Denver Intl

$414United Airlines

Mon, Aug 24 - Sun, Aug 30

1:50 pm - 11:45 pmGEG Spokane-PHL Philadelphia

6h 55m1 stop Denver Intl

10:20 am - 4:30 pmPHL Philadelphia-GEG Spokane

9h 10m2 stops Chicago Midway Denver Intl

$414Southwest

Mon, Aug 24 - Mon, Aug 31

1:37 pm - 11:44 pmGEG Spokane-PHL Philadelphia

7h 07m1 stop Denver Intl

6:16 am - 3:06 pmPHL Philadelphia-GEG Spokane

11h 50m2 stops Houston George Bush Intcntl Denver Intl

$524United Airlines

Tue, Aug 25 - Sun, Aug 30

6:00 am - 3:45 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

7h 45m1 stop Portland

8:37 pm - 11:29 amPHL Philadelphia-BOI Boise Air Term. Gowen Fld

16h 52m1 stop Denver Intl

$554Multiple Airlines

Sun, Aug 23 - Wed, Aug 26

5:12 am - 3:45 pmGEG Spokane-PHL Philadelphia

7h 33m1 stop Portland

4:48 pm - 11:11 pmPHL Philadelphia-GEG Spokane

9h 23m1 stop Portland

$576Alaska Airlines

Mon, Aug 24 - Sat, Aug 29

12:24 pm - 4:37 pmBOI Boise Air Term. Gowen Fld-PHL Philadelphia

26h 13m2 stops Denver Intl Dallas/Fort Worth

8:37 pm - 12:29 pmPHL Philadelphia-BOI Boise Air Term. Gowen Fld

17h 52m1 stop Denver Intl

$830Frontier

Sun, Aug 23 - Mon, Aug 24

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Delta flights from Idaho to Philadelphia

Our best Delta deals on Idaho to Philadelphia flight tickets

Delta

Oct 22

BOI6:49 pmBoise Air Term. Gowen Fld

9h 16m

1 stop

PHL6:05 amPhiladelphia

Oct 24

PHL5:45 amPhiladelphia

8h 50m

1 stop

BOI12:35 pmBoise Air Term. Gowen Fld

$311

Delta

Oct 9

BOI7:13 pmBoise Air Term. Gowen Fld

8h 31m

1 stop

PHL5:44 amPhiladelphia

Oct 17

PHL5:45 amPhiladelphia

8h 50m

1 stop

BOI12:35 pmBoise Air Term. Gowen Fld

$329

Delta

Oct 15

GEG7:23 pmSpokane

7h 42m

1 stop

PHL6:05 amPhiladelphia

Oct 19

PHL7:00 amPhiladelphia

8h 18m

1 stop

GEG12:18 pmSpokane

$341

American Airlines flights from Idaho to Philadelphia

Our best American Airlines deals on Idaho to Philadelphia flight tickets

American Airlines

Sep 30

JAC1:00 pmJackson Hole

9h 22m

1 stop

PHL12:22 amPhiladelphia

Oct 4

PHL7:00 amPhiladelphia

10h 01m

1 stop

JAC3:01 pmJackson Hole

$396

American Airlines

Nov 11

JAC1:21 pmJackson Hole

8h 56m

1 stop

PHL12:17 amPhiladelphia

Nov 18

PHL7:00 amPhiladelphia

7h 39m

1 stop

JAC12:39 pmJackson Hole

$423

American Airlines

Nov 6

BOI1:27 pmBoise Air Term. Gowen Fld

8h 56m

1 stop

PHL12:23 amPhiladelphia

Nov 9

PHL7:00 amPhiladelphia

8h 23m

1 stop

BOI1:23 pmBoise Air Term. Gowen Fld

$433

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoisePhiladelphia

BOI Boise Air Term. Gowen Fld - PHL Philadelphia

BOIPHL

Boise Air Term. Gowen Fld

Thu 11/12

6:37 am-4:45 pm

1 stop8h 08m

Philadelphia

Sat 11/14

7:02 am-3:27 pm

1 stop10h 25m

$311

BoisePhiladelphia

BOI Boise Air Term. Gowen Fld - PHL Philadelphia

BOIPHL

Boise Air Term. Gowen Fld

Tue 10/6

4:18 pm-5:41 am

1 stop11h 23m

Philadelphia

Wed 10/21

6:41 pm-9:56 am

1 stop17h 15m

$311

BoisePhiladelphia

BOI Boise Air Term. Gowen Fld - PHL Philadelphia

BOIPHL

Boise Air Term. Gowen Fld

Tue 10/27

7:10 pm-7:39 am

1 stop10h 29m

Philadelphia

Mon 11/2

6:15 am-11:31 am

1 stop7h 16m

$311

Quickest round-trip

BoisePhiladelphia

BOI Boise Air Term. Gowen Fld - PHL Philadelphia

BOIPHL

Boise Air Term. Gowen Fld

Thu 12/10

1:24 pm-10:44 pm

1 stop7h 20m

Philadelphia

Mon 12/14

7:26 am-12:42 pm

1 stop7h 16m

$311

BoisePhiladelphia

BOI Boise Air Term. Gowen Fld - PHL Philadelphia

BOIPHL

Boise Air Term. Gowen Fld

Wed 10/21

3:24 pm-12:11 am

1 stop6h 47m

Philadelphia

Tue 10/27

5:00 am-1:51 pm

1 stop10h 51m

$311

BoisePhiladelphia

BOI Boise Air Term. Gowen Fld - PHL Philadelphia

BOIPHL

Boise Air Term. Gowen Fld

Thu 10/22

6:49 pm-6:05 am

1 stop9h 16m

Philadelphia

Sat 10/24

5:45 am-12:35 pm

1 stop8h 50m

$311

BoisePhiladelphia

BOI Boise Air Term. Gowen Fld - PHL Philadelphia

BOIPHL

Boise Air Term. Gowen Fld

Mon 11/2

5:59 pm-5:44 am

1 stop9h 45m

Philadelphia

Thu 11/5

6:00 am-1:34 pm

1 stop9h 34m

$311

BoisePhiladelphia

BOI Boise Air Term. Gowen Fld - PHL Philadelphia

BOIPHL

Boise Air Term. Gowen Fld

Mon 11/2

12:31 pm-11:30 pm

2 stops8h 59m

Philadelphia

Thu 11/5

6:15 am-11:31 am

1 stop7h 16m

$316

BoisePhiladelphia

BOI Boise Air Term. Gowen Fld - PHL Philadelphia

BOIPHL

Boise Air Term. Gowen Fld

Wed 10/21

11:55 am-11:30 pm

2 stops9h 35m

Philadelphia

Tue 10/27

6:00 am-2:45 pm

2 stops10h 45m

$321

BoisePhiladelphia

BOI Boise Air Term. Gowen Fld - PHL Philadelphia

BOIPHL

Boise Air Term. Gowen Fld

Tue 10/6

11:55 am-11:30 pm

2 stops9h 35m

Philadelphia

Wed 10/21

5:30 am-10:45 am

1 stop7h 15m

$334

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 Idaho to Philadelphia

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 Philadelphia?

The cheapest month to fly to Philadelphia from Idaho is in September. Flight prices, which tend to average around $402, are often lower during this time because this is during the off-season. The month of June is another great option to travel to Philadelphia, with average flight prices from Idaho averaging around $413.

Can stopping save me money on Idaho to Philadelphia flights?

You could potentially save up to 60% on your flight if you consider stops on a Idaho to Philadelphia flight.

Cheap Idaho to Philadelphia flight deals and tips

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

Best Price Found	$155
Fastest flight time	6h 30m
Direct flights	None

The best one-way flight to Philadelphia from Idaho in the past 72 hours is $155. The best round-trip flight deal from Idaho to Philadelphia found on momondo in the last 72 hours is $311.

The fastest flight from Idaho to Philadelphia takes 6h 30m

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

Search flight deals

Frequently asked questions about flying from Idaho to Philadelphia

When did momondo last update prices for flights from Idaho to Philadelphia Airport?
Prices for flights from Idaho to Philadelphia Airport refresh daily.
How many operators does momondo search for flights from Idaho to Philadelphia Airport?
As of August 2026, there are 5 operators available to choose from for flights from Idaho to Philadelphia Airport.
How old do you have to be to fly from Idaho to Philadelphia Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Philadelphia Airport.
What documentation or ID do you need to fly to Philadelphia Airport?
The necessary travel and health documents for your Philadelphia Airport 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 Idaho to Philadelphia

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $257	Free Cancellation	Rating 7.4 10,102 reviews	Search United Airlines flights
Delta	PriceFrom $257	Free Cancellation	Rating 7.8 8,507 reviews	Search Delta flights
American Airlines	PriceFrom $306	Free Cancellation	Rating 7.1 11,974 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $310	Free Cancellation	Rating 7.9 12,821 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $348	Free Cancellation	Rating 8.0 4,215 reviews	Search Southwest flights

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Cherry Hill

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Idaho to Philadelphia. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Philadelphia from Idaho on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Philadelphia from Idaho.

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

Yes momondo offers price alerts on flights to Philadelphia from Idaho. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.