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Philadelphia

$116+ Cheap flights from Idaho to Philadelphia (PHL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — PHL
Jun 12 — Jun 191
Fri 6/12
Fri 6/19
1 adult, Economy
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Cheap flight deals from Idaho to Philadelphia

Cheapest flights from Idaho to Philadelphia
Explore the most affordable flight options available from Idaho to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 13, 2026.

This Mytrip deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/21:25 pm
BOI
-
PHL
1 stop14h 12m
Frontier
Wed 6/38:35 pm
PHL
-
BOI
1 stop18h 03m
Frontier
Deal found 5/11$219
This Frontier deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2912:33 pm
GEG
-
PHL
1 stop14h 04m
Frontier
Thu 6/48:35 pm
PHL
-
GEG
1 stop18h 03m
Frontier
Deal found 5/9$255
This Mytrip deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/281:25 pm
BOI
-
PHL
1 stop14h 12m
Frontier
Mon 6/88:35 pm
PHL
-
BOI
1 stop17h 55m
Frontier
Deal found 5/12$264
This Booking.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/281:25 pm
BOI
-
PHL
1 stop14h 12m
Frontier
Mon 6/18:35 pm
PHL
-
BOI
1 stop17h 55m
Frontier
Deal found 5/11$266
This Delta deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/276:07 pm
BOI
-
PHL
1 stop9h 22m
Delta
Tue 8/117:00 am
PHL
-
BOI
1 stop10h 18m
Delta
Deal found 5/12$279
This Delta deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:00 pm
GEG
-
PHL
1 stop9h 41m
Delta
Mon 10/197:05 am
PHL
-
GEG
1 stop8h 57m
Delta
Deal found 5/12$279
This Booking.com deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/812:33 pm
GEG
-
PHL
1 stop14h 04m
Frontier
Sun 6/148:37 pm
PHL
-
GEG
1 stop17h 59m
Frontier
Deal found 5/9$282
This KAYAK deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2711:39 pm
BOI
-
PHL
1 stop7h 48m
Delta
Fri 5/2912:38 pm
PHL
-
BOI
2 stops13h 26m
Delta
Deal found 5/11$284
This United Airlines deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/297:25 pm
GEG
-
PHL
2 stops11h 50m
United Airlines
Sat 6/64:14 pm
PHL
-
GEG
1 stop7h 16m
United Airlines
Deal found 5/11$284
This American Airlines deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/42:01 pm
GEG
-
PHL
1 stop7h 38m
American Airlines
Sat 6/612:51 pm
PHL
-
GEG
1 stop10h 52m
American Airlines
Deal found 5/8$289
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/19:18 pm
BOI
-
PHL
2 stops11h 12m
Delta
Wed 6/32:23 pm
PHL
-
BOI
2 stops11h 41m
Delta
Deal found 5/11$290
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:00 am
GEG
-
PHL
2 stops9h 25m
Delta
Tue 7/215:15 am
PHL
-
GEG
2 stops11h 06m
Delta
Deal found 5/11$290

Find flight deals from Idaho to Philadelphia

Keep the following information in mind while searching for Idaho to Philadelphia flight deals. Data was last updated May 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$219
(Mytrip)

One-way from

$116
(Booking.com)

Popular in

December

Cheapest in

January

Average price

$393
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Philadelphia flights.
Search Deals
From Idaho to Philadelphia
Search Deals
One-way flight from Idaho to Philadelphia
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($40 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho to Philadelphia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 13, 2026.
Use the filters below to find and compare flights from Idaho to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Wed 5/27

11:39 pm-9:27 am

1 stop7h 48m

Philadelphia

Fri 5/29

6:35 am-12:43 pm

1 stop8h 08m

$279

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 7/15

5:37 pm-5:29 am

1 stop8h 52m

Philadelphia

Tue 7/21

6:25 am-11:40 am

1 stop8h 15m

$279

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Thu 10/15

5:40 pm-6:03 am

1 stop9h 23m

Philadelphia

Mon 10/19

7:05 am-1:02 pm

1 stop8h 57m

$279

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Sun 5/24

5:35 am-5:12 pm

1 stop8h 37m

Philadelphia

Tue 6/2

2:23 pm-9:20 pm

1 stop9h 57m

$279

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Thu 7/16

5:37 pm-5:29 am

1 stop8h 52m

Philadelphia

Tue 7/21

5:15 am-1:21 pm

2 stops11h 06m

$284

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 6/10

12:35 pm-11:58 pm

1 stop8h 23m

Philadelphia

Sun 6/14

5:40 am-12:15 pm

2 stops9h 35m

$329

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Wed 7/1

2:04 pm-12:59 am

1 stop8h 55m

Philadelphia

Wed 7/8

4:08 pm-12:05 am

2 stops9h 57m

$334
Quickest round-trip

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Fri 7/10

2:26 pm-11:56 pm

1 stop6h 30m

Philadelphia

Fri 7/17

6:57 pm-11:06 pm

1 stop7h 09m

$345

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Sat 6/13

7:05 pm-7:50 am

1 stop10h 45m

Philadelphia

Sat 6/27

6:00 am-11:27 am

1 stop7h 27m

$349

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Fri 5/29

3:11 pm-12:31 am

1 stop7h 20m

Philadelphia

Sun 5/31

5:00 am-11:19 am

1 stop8h 19m

$353

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/13

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Idaho to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Idaho with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Idaho to Philadelphia

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

To ensure you get the cheapest price possible for a flight from Idaho to Philadelphia, you should look to book at least 26 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Idaho to Philadelphia?

Currently, May is the cheapest month in which you can book a flight from Idaho to Philadelphia (average of $130). Flying from Idaho to Philadelphia in November is currently the most expensive (average of $377). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Idaho to Philadelphia?

Related info for your journey

Find useful and relevant information for your journey from Idaho to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Philadelphia from Idaho?

    If you book a flight to Philadelphia from Idaho, you will be flying to Philadelphia, which is the city’s only airport. Philadelphia (PHL) is located 7.0 mi from the center of Philadelphia.

  • How long is the flight from Idaho to Philadelphia?

    For as low as $353, Delta can have you in Philadelphia from Idaho in 7h 20m. The distance between Idaho and Philadelphia is about 2106 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Idaho to Philadelphia one-way?

    $96 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on United Airlines and Southwest, with prices starting from $139 and $168, respectively.

  • What are the most popular routes from Idaho to Philadelphia?

    The most popular route from Idaho to Philadelphia is Boise Air Term. Gowen Fld - Philadelphia. You may also consider Spokane - Philadelphia or Idaho Falls Fanning Field - Philadelphia.

  • Can I find deals for flights from Idaho to Philadelphia that include hotel bookings?

    Yes. In addition to deals on Idaho to Philadelphia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Idaho to Philadelphia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to Philadelphia.

  • Can I find deals for business class flights from Idaho to Philadelphia?

    Yes. Cheapflights offers flight deals from Idaho to Philadelphia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Idaho to Philadelphia?

    Currently, May is the cheapest month in which you can book a flight from Idaho to Philadelphia (average of $130). Flying from Idaho to Philadelphia in November is currently the most expensive (average of $377). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood
King of Prussia
Reading
Camden
Ocean City
Lewes
Dewey Beach
Pottstown
Vineland
Ephrata
Milford
Dover
Elkton
Essington
Willow Grove
New Castle
Millville
Glen Mills
Chester
Newark

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Alternative routes for Idaho to Philadelphia

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Top 4 airlines flying from Idaho to Philadelphia

Discover the top 4 airlines that operate flights from Idaho to Philadelphia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$195Average$430FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$257Average$648FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$306Average$528FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$348Average$553FlexibilityNo cancel feeOn-time63%

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