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$112+ Cheap flights from Philadelphia (PHL) to Idaho

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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BOI
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap flight deals from Philadelphia to Idaho

Keep the following information in mind while searching for Philadelphia to Idaho flight deals. Data was last updated July 3, 2025.

Round-trip from

$241
(American Airlines)

One-way from

$112
(Priceline)

Popular in

November

Cheapest in

August

Average price

$457
From Philadelphia to Idaho
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One-way flight from Philadelphia to Idaho
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Highest demand for flights based on searches. 18% potential increase in price ($111 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Philadelphia to Idaho

Cheapest flights from Philadelphia to Idaho
Explore the most affordable flight options available from Philadelphia to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This American Airlines deal was found by Cheapflights users on 7/2. 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 10/236:00 amPHL - JAC
1 stop8h 26mAmerican Airlines
Mon 10/2712:34 pmJAC - PHL
1 stop10h 25mAmerican Airlines
Deal found 7/2$241
This Priceline deal was found by Cheapflights users on 7/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/206:15 amPHL - BOI
1 stop7h 31mFrontier
Thu 7/2412:36 pmBOI - PHL
1 stop7h 33mFrontier
Deal found 7/1$246
This Delta deal was found by Cheapflights users on 7/1. 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.
Tue 10/217:00 amPHL - JAC
1 stop9h 03mDelta
Wed 10/297:30 amJAC - PHL
1 stop8h 16mDelta
Deal found 7/1$257
This Mytrip deal was found by Cheapflights users on 7/2. 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 8/191:34 pmPHL - GEG
2 stops48h 23mFrontier
Thu 8/2811:52 amGEG - PHL
1 stop14h 02mFrontier
Deal found 7/2$292
This Gotogate deal was found by Cheapflights users on 7/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/149:00 amPHL - BOI
1 stop10h 11mMultiple Airlines
Thu 8/2112:33 pmBOI - PHL
1 stop14h 21mMultiple Airlines
Deal found 7/1$304
This Mytrip deal was found by Cheapflights users on 7/2. 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.
Fri 8/229:00 amPHL - BOI
1 stop10h 11mSpirit Airlines
Mon 8/256:06 pmBOI - PHL
3 stops27h 14mSpirit Airlines
Deal found 7/2$320
This Delta deal was found by Cheapflights users on 7/2. 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.
Tue 8/127:00 amPHL - GEG
1 stop7h 58mDelta
Sat 8/302:21 pmGEG - PHL
1 stop6h 30mDelta
Deal found 7/2$323
This Orbitz deal was found by Cheapflights users on 7/2. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/196:45 amPHL - GEG
1 stop8h 44mMultiple Airlines
Thu 8/2811:52 amGEG - PHL
1 stop14h 02mMultiple Airlines
Deal found 7/2$329
This Delta deal was found by Cheapflights users on 7/2. 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 9/177:00 amPHL - WYS
1 stop9h 52mDelta
Mon 9/223:27 pmWYS - PHL
2 stops15h 18mDelta
Deal found 7/2$331
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Tue 8/126:30 amPHL - GEG
1 stop7h 26mUnited Airlines
Mon 8/186:25 pmGEG - PHL
2 stops12h 08mUnited Airlines
Deal found 7/1$338
This Delta deal was found by Cheapflights users on 7/1. 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.
Tue 7/297:10 amPHL - SUN
1 stop6h 41mDelta
Tue 8/57:30 amSUN - PHL
1 stop8h 15mDelta
Deal found 7/1$341
This American Airlines deal was found by Cheapflights users on 7/2. 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.
Tue 8/122:01 pmPHL - BOI
1 stop8h 09mAmerican Airlines
Tue 8/261:50 pmBOI - PHL
1 stop7h 33mAmerican Airlines
Deal found 7/2$343

Cheapflights Fare Finder

Customize your flight search to find flights from Philadelphia to Idaho 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 July 3, 2025.
Use the filters below to find and compare flights from Philadelphia to Idaho that are best for you.

Fly from

Philadelphia

Fly to

Idaho

Route

Depart

Return

Price

PhiladelphiaJackson

PHL - JAC

PHLJAC

Philadelphia

Thu 10/23

6:00 am-12:26 pm

1 stop8h 26m

Jackson Hole

Mon 10/27

12:34 pm-12:59 am

1 stop10h 25m

$241

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Sun 7/20

6:15 am-11:46 am

1 stop7h 31m

Boise Air Term. Gowen Fld

Thu 7/24

12:36 pm-10:09 pm

1 stop7h 33m

$246

PhiladelphiaJackson

PHL - JAC

PHLJAC

Philadelphia

Tue 10/21

7:00 am-2:03 pm

1 stop9h 03m

Jackson Hole

Wed 10/29

7:30 am-5:46 pm

1 stop8h 16m

$257

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Tue 8/19

1:34 pm-10:57 am

2 stops48h 23m

Spokane

Thu 8/28

11:52 am-4:54 am

1 stop14h 02m

$292

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Thu 8/14

9:00 am-5:11 pm

1 stop10h 11m

Boise Air Term. Gowen Fld

Thu 8/21

12:33 pm-4:54 am

1 stop14h 21m

$304

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Fri 8/22

9:00 am-5:11 pm

1 stop10h 11m

Boise Air Term. Gowen Fld

Mon 8/25

6:06 pm-11:20 pm

3 stops27h 14m

$320

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Tue 8/12

7:00 am-11:58 am

1 stop7h 58m

Spokane

Sat 8/30

2:21 pm-11:51 pm

1 stop6h 30m

$323

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Tue 8/19

6:45 am-12:29 pm

1 stop8h 44m

Spokane

Thu 8/28

11:52 am-4:54 am

1 stop14h 02m

$329

PhiladelphiaWest Yellowstone

PHL - WYS

PHLWYS

Philadelphia

Wed 9/17

7:00 am-2:52 pm

1 stop9h 52m

West Yellowstone

Mon 9/22

3:27 pm-8:45 am

2 stops15h 18m

$331

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Tue 8/12

6:30 am-10:56 am

1 stop7h 26m

Spokane

Mon 8/18

6:25 pm-9:33 am

2 stops12h 08m

$338

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 57 results
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Best time to book a flight from Philadelphia to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Philadelphia 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 Philadelphia to Idaho

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

Currently, October is the cheapest month in which you can book a flight from Philadelphia to Idaho (average of $314). Flying from Philadelphia to Idaho in June is currently the most expensive (average of $398). 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.

What is the cheapest time of day to fly from PHL to ID?

Find hourly flight availability from Philadelphia to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Philadelphia to Idaho as you normally would.

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho. Reviews last updated July 3, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta from Philadelphia to Idaho to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,266 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,545 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Idaho. 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 from for flights from Philadelphia to Idaho?

    Philadelphia (PHL) is the airport you will fly out of if you book a flight from Philadelphia to Idaho. It is only a 7.0 mi journey to Philadelphia (PHL) from Philadelphia’s city center.

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

    The cheapest airlines for a one-way flight from Philadelphia to Idaho are Frontier ($112), American Airlines ($121), and Delta ($129).

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

    While some choose either Philadelphia - Jackson Hole or Philadelphia - Boise Air Term. Gowen Fld, Philadelphia - Spokane is the most popular route from Philadelphia to Idaho.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Philadelphia to Idaho 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 Philadelphia to Idaho?

    Currently, October is the cheapest month in which you can book a flight from Philadelphia to Idaho (average of $314). Flying from Philadelphia to Idaho in June is currently the most expensive (average of $398). 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

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Alternative routes for Philadelphia to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Philadelphia to Idaho

Discover the top 5 airlines that operate flights from Philadelphia to Idaho. 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$160Average$367FlexibilityNo cancel feeOn-time65%
DeltaCheapest$301Average$603FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$326Average$556FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$362Average$448FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$429Average$731FlexibilityNo cancel feeOn-time69%

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