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

Delta, United Airlines, and Alaska 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 41% 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 Hailey or Twin Falls, and flying into Philadelphia, then you can expect flight times to average 6h 22m and 6h 33m, 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 May 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.

$116 Cheap Flights from Idaho to Philadelphia in 2026

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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.

1:25 pm - 5:37 am

BOI

PHL

14h 12m

1 stop

8:35 pm - 12:38 pm

PHL

BOI

18h 03m

1 stop

$219Frontier

Tue, Jun 2 - Wed, Jun 3

12:33 pm - 5:37 am

GEG

PHL

14h 04m

1 stop

8:35 pm - 11:38 am

PHL

GEG

18h 03m

1 stop

$255Frontier

Fri, May 29 - Thu, Jun 4

11:42 pm - 9:31 am

BOI

PHL

7h 49m

1 stop

5:15 am - 12:49 pm

PHL

BOI

9h 34m

1 stop

$279Delta

Thu, Jul 23 - Tue, Aug 11

12:40 pm - 12:21 am

GEG

PHL

8h 41m

1 stop

7:05 am - 2:45 pm

PHL

GEG

10h 40m

1 stop

$279Delta

Thu, Oct 15 - Mon, Oct 19

7:25 pm - 10:15 am

GEG

PHL

11h 50m

2 stops

4:14 pm - 8:30 pm

PHL

GEG

7h 16m

1 stop

$284United Airlines

Fri, May 29 - Sat, Jun 6

5:40 pm - 5:34 am

BOI

PHL

9h 54m

1 stop

4:17 pm - 11:11 pm

PHL

BOI

8h 54m

1 stop

$296American Airlines

Mon, Jun 1 - Wed, Jun 3

3:12 pm - 12:39 am

BOI

PHL

7h 27m

1 stop

5:00 am - 11:18 am

PHL

BOI

8h 18m

1 stop

$302American Airlines

Sat, Jun 6 - Sat, Jun 13

5:09 am - 3:44 pm

GEG

PHL

7h 35m

1 stop

4:44 pm - 11:14 pm

PHL

GEG

9h 30m

1 stop

$312Alaska Airlines

Fri, Aug 28 - Sat, Aug 29

4:14 pm - 3:44 pm

IDA

PHL

21h 30m

1 stop

4:44 pm - 1:06 pm

PHL

IDA

22h 22m

1 stop

$349Alaska Airlines

Fri, Aug 28 - Sun, Aug 30

8:00 am - 12:57 am

JAC

PHL

14h 57m

2 stops

8:05 am - 5:53 pm

PHL

JAC

11h 48m

2 stops

$455United Airlines

Wed, Jul 15 - Tue, Jul 21

Frontier flights from Idaho to Philadelphia

Our best Frontier deals on Idaho to Philadelphia flight tickets

Frontier

Jun 2

BOI1:25 pmBoise Air Term. Gowen Fld

14h 12m

1 stop

PHL5:37 amPhiladelphia

Jun 3

PHL8:35 pmPhiladelphia

18h 03m

1 stop

BOI12:38 pmBoise Air Term. Gowen Fld

$219

Frontier

May 29

GEG12:33 pmSpokane

14h 04m

1 stop

PHL5:37 amPhiladelphia

Jun 4

PHL8:35 pmPhiladelphia

18h 03m

1 stop

GEG11:38 amSpokane

$255

Frontier

May 28

BOI1:25 pmBoise Air Term. Gowen Fld

14h 12m

1 stop

PHL5:37 amPhiladelphia

Jun 8

PHL8:35 pmPhiladelphia

17h 55m

1 stop

BOI12:30 pmBoise Air Term. Gowen Fld

$264

United Airlines flights from Idaho to Philadelphia

Our best United Airlines deals on Idaho to Philadelphia flight tickets

United Airlines

May 29

GEG7:25 pmSpokane

11h 50m

2 stops

PHL10:15 amPhiladelphia

Jun 6

PHL4:14 pmPhiladelphia

7h 16m

1 stop

GEG8:30 pmSpokane

$284

United Airlines

Jun 13

BOI7:05 pmBoise Air Term. Gowen Fld

10h 45m

1 stop

PHL7:50 amPhiladelphia

Jun 27

PHL6:00 amPhiladelphia

7h 27m

1 stop

BOI11:27 amBoise Air Term. Gowen Fld

$339

United Airlines

Jun 8

GEG7:25 pmSpokane

12h 00m

2 stops

PHL10:25 amPhiladelphia

Jun 10

PHL6:00 amPhiladelphia

8h 50m

1 stop

GEG11:50 amSpokane

$386

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Tue 6/2

1:25 pm-5:37 am

1 stop14h 12m

Philadelphia

Wed 6/3

8:35 pm-12:38 pm

1 stop18h 03m

$219

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Fri 5/29

12:33 pm-5:37 am

1 stop14h 04m

Philadelphia

Thu 6/4

8:35 pm-11:38 am

1 stop18h 03m

$255

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Thu 7/23

11:42 pm-9:31 am

1 stop7h 49m

Philadelphia

Tue 8/11

5:15 am-12:49 pm

1 stop9h 34m

$279

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Thu 10/15

12:40 pm-12:21 am

1 stop8h 41m

Philadelphia

Mon 10/19

7:05 am-2:45 pm

1 stop10h 40m

$279

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Fri 5/29

7:25 pm-10:15 am

2 stops11h 50m

Philadelphia

Sat 6/6

4:14 pm-8:30 pm

1 stop7h 16m

$284

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Mon 6/1

5:40 pm-5:34 am

1 stop9h 54m

Philadelphia

Wed 6/3

4:17 pm-11:11 pm

1 stop8h 54m

$296

Quickest round-trip

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Sat 6/6

3:12 pm-12:39 am

1 stop7h 27m

Philadelphia

Sat 6/13

5:00 am-11:18 am

1 stop8h 18m

$302

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Fri 8/28

5:09 am-3:44 pm

1 stop7h 35m

Philadelphia

Sat 8/29

4:44 pm-11:14 pm

1 stop9h 30m

$312

Idaho FallsPhiladelphia

IDA - PHL

IDAPHL

Idaho Falls Fanning Field

Fri 8/28

4:14 pm-3:44 pm

1 stop21h 30m

Philadelphia

Sun 8/30

4:44 pm-1:06 pm

1 stop22h 22m

$349

JacksonPhiladelphia

JAC - PHL

JACPHL

Jackson Hole

Wed 7/15

8:00 am-12:57 am

2 stops14h 57m

Philadelphia

Tue 7/21

8:05 am-5:53 pm

2 stops11h 48m

$455

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 May. Flight prices, which tend to average around $130, are often lower during this time because this is during the off-season. The month of July is another great option to travel to Philadelphia, with average flight prices from Idaho averaging around $208.

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

You are more likely to see cheaper flights to Philadelphia from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $494 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from Idaho for as low as $302 on momondo.

Cheap Idaho to Philadelphia flight deals and tips

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

Fastest flight time	6h 35m
Direct flights	None

The fastest flight from Idaho to Philadelphia takes 6h 35m

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 May 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
Delta	PriceFrom $195	Free Cancellation	Rating 7.9 8,454 reviews	Search Delta flights
United Airlines	PriceFrom $257	Free Cancellation	Rating 7.4 9,711 reviews	Search United Airlines flights
American Airlines	PriceFrom $306	Free Cancellation	Rating 7.1 11,664 reviews	Search American Airlines flights
Southwest	PriceFrom $348	Free Cancellation	Rating 8.0 4,299 reviews	Search Southwest flights

Wildwood

Rehoboth Beach

Cape May

Wildwood Crest

Ocean City

Cherry Hill

King of Prussia

Newark

Dewey Beach

Reading

Dover

Avalon

North Wildwood

Lewes

Stone Harbor

New Castle

Essington

Vineland

Pottstown

Somers Point

Why use momondo?

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.