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$150+ 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 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BOI
Jan 25 — Feb 11
Sun 1/25
Sun 2/1
1 adult, Economy
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Cheap 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 December 26, 2025.

This American Airlines deal was found by Cheapflights users on 12/24. 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 12/257:10 amPHL - GEG
1 stop7h 56mAmerican Airlines
Wed 1/286:33 amGEG - PHL
1 stop10h 28mAmerican Airlines
Deal found 12/24$496
This United Airlines deal was found by Cheapflights users on 12/24. 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.
Thu 12/258:00 amPHL - GEG
2 stops16h 31mUnited Airlines
Wed 1/2811:25 amGEG - PHL
1 stop7h 11mUnited Airlines
Deal found 12/24$501
This Delta deal was found by Cheapflights users on 12/24. 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 12/297:05 amPHL - BOI
1 stop6h 57mDelta
Thu 1/11:55 pmBOI - PHL
1 stop8h 32mDelta
Deal found 12/24$528
This Delta deal was found by Cheapflights users on 12/24. 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 12/317:05 amPHL - BOI
1 stop6h 57mDelta
Sun 1/46:19 pmBOI - PHL
1 stop9h 31mDelta
Deal found 12/24$568
This Southwest deal was found by Cheapflights users on 12/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:45 pmPHL - BOI
2 stops10h 25mSouthwest
Sun 1/45:00 amBOI - PHL
2 stops10h 45mSouthwest
Deal found 12/24$608
This United Airlines deal was found by Cheapflights users on 12/23. 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 12/268:00 amPHL - BOI
1 stop7h 36mUnited Airlines
Tue 12/305:00 amBOI - PHL
1 stop8h 46mUnited Airlines
Deal found 12/23$716
This Delta deal was found by Cheapflights users on 12/24. 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.
Fri 12/266:45 pmPHL - BOI
1 stop7h 34mDelta
Mon 1/56:15 pmBOI - PHL
2 stops14h 45mDelta
Deal found 12/24$721
This Southwest deal was found by Cheapflights users on 12/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:40 amPHL - BOI
2 stops11h 20mSouthwest
Sat 1/38:40 pmBOI - PHL
2 stops10h 30mSouthwest
Deal found 12/26$747
This Southwest deal was found by Cheapflights users on 12/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:40 pmPHL - BOI
1 stop9h 00mSouthwest
Wed 12/315:15 amBOI - PHL
1 stop9h 05mSouthwest
Deal found 12/25$755
This United Airlines deal was found by Cheapflights users on 12/24. 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.
Sat 12/278:27 amPHL - IDA
2 stops14h 47mUnited Airlines
Fri 1/25:00 amIDA - PHL
2 stops10h 28mUnited Airlines
Deal found 12/24$756
This United Airlines deal was found by Cheapflights users on 12/25. 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.
Mon 12/296:35 amPHL - BOI
1 stop8h 04mUnited Airlines
Wed 12/318:30 amBOI - PHL
2 stops13h 00mUnited Airlines
Deal found 12/25$760
This United Airlines deal was found by Cheapflights users on 12/24. 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.
Sun 12/286:10 amPHL - JAC
1 stop7h 24mUnited Airlines
Tue 12/3012:35 pmJAC - PHL
1 stop26h 53mUnited Airlines
Deal found 12/24$820

Find flight deals from Philadelphia to Idaho

Keep the following information in mind while searching for Philadelphia to Idaho flight deals. Data was last updated December 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$289
(Delta)

One-way from

$150
(Alaska Airlines)

Popular in

December

Cheapest in

September

Average price

$616
Provider with most accurate pricing for Philadelphia-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Boise Air Term. Gowen Fld flights.
Search Deals
From Philadelphia to Idaho
Search Deals
One-way flight from Philadelphia to Idaho
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($58 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 26, 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

Sun 2/1

7:06 pm-11:08 am

1 stop18h 02m

Jackson Hole

Fri 2/6

12:51 pm-6:03 pm

1 stop27h 12m

$289

PhiladelphiaJackson

PHL - JAC

PHLJAC

Philadelphia

Tue 1/20

3:43 pm-8:42 pm

1 stop6h 59m

Jackson Hole

Sat 1/24

2:40 pm-11:30 pm

1 stop6h 50m

$289

PhiladelphiaJackson

PHL - JAC

PHLJAC

Philadelphia

Sat 1/24

5:40 am-4:24 pm

2 stops12h 44m

Jackson Hole

Sat 1/31

2:40 pm-12:21 am

1 stop7h 41m

$294

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Tue 1/20

7:06 pm-12:23 am

1 stop8h 17m

Spokane

Tue 1/27

7:30 am-6:03 pm

1 stop7h 33m

$304

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 2/24

6:20 pm-10:40 pm

1 stop30h 20m

Boise Air Term. Gowen Fld

Tue 3/3

6:28 am-5:20 pm

1 stop8h 52m

$304

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Tue 1/20

5:17 pm-11:59 pm

2 stops9h 42m

Spokane

Tue 1/27

9:20 am-11:56 pm

2 stops11h 36m

$316

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Wed 2/18

12:29 pm-9:56 pm

2 stops11h 27m

Boise Air Term. Gowen Fld

Wed 2/25

5:50 am-5:56 pm

2 stops10h 06m

$316

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 2/24

6:10 am-4:15 pm

2 stops12h 05m

Boise Air Term. Gowen Fld

Tue 3/3

8:50 am-11:46 pm

2 stops12h 56m

$316

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Tue 1/20

7:06 pm-12:23 am

1 stop8h 17m

Spokane

Sat 1/24

7:30 am-6:03 pm

1 stop7h 33m

$318

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Wed 2/18

3:54 pm-11:34 pm

1 stop9h 40m

Boise Air Term. Gowen Fld

Wed 2/25

1:39 pm-11:52 pm

1 stop8h 13m

$319

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/24

Showing 1-10 of 58 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, February is the cheapest month in which you can book a flight from Philadelphia to Idaho (average of $134). Flying from Philadelphia to Idaho in January is currently the most expensive (average of $293). 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 December 26, 2025.

A simple way to save on the total cost of your ticket is to fly from Philadelphia to Idaho at noon. If you’re flexible enough to do this you can expect to save up to 28% on your trip compared to booking a flight in the afternoon.

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 December 26, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines 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.
Southwest
8.0
Very good
4,258 reviews

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,258 reviews
Southwest
8.0
Very good
4,258 reviews

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,012 reviews
Southwest
8.0
Very good
4,258 reviews

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,115 reviews
Southwest
8.0
Very good
4,258 reviews

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,061 reviews
Southwest
8.0
Very good
4,258 reviews

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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.

  • How long is the flight from Philadelphia to Idaho?

    Departing from Philadelphia to Idaho will take you 6h 59m. There are 1833 mi between Philadelphia and Idaho. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 Delta ($168), American Airlines ($171), and Southwest ($173).

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

    While some choose either Philadelphia - Boise Air Term. Gowen Fld or Philadelphia - Spokane, Philadelphia - Jackson Hole 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, February is the cheapest month in which you can book a flight from Philadelphia to Idaho (average of $134). Flying from Philadelphia to Idaho in January is currently the most expensive (average of $293). 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 4 airlines flying from Philadelphia to Idaho

Discover the top 4 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 December 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$270Average$558FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$298Average$497FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$358Average$481FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$367Average$628FlexibilityNo cancel feeOn-time69%

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