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$117+ 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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BOI
Mar 31 — Apr 71
Mon 3/31
Mon 4/7
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 March 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$225
(Mytrip)

One-way from

$117
(Mytrip)

Popular in

November

Cheapest in

April

Average price

$450
Provider with most accurate pricing for Philadelphia-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Philadelphia-Boise Air Term. Gowen Fld flights.
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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. 14% potential increase in price ($86 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 26, 2025.

This Delta deal was found by Cheapflights users on 3/24. 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 4/216:34 pmPHL - BOI
1 stop7h 35mDelta
Sat 4/263:30 pmBOI - PHL
1 stop6h 20mDelta
Deal found 3/24$284
This Mytrip deal was found by Cheapflights users on 3/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/810:08 pmPHL - BOI
1 stop16h 49mMultiple Airlines
Sat 4/122:11 pmBOI - PHL
2 stops37h 41mMultiple Airlines
Deal found 3/24$320
This Delta deal was found by Cheapflights users on 3/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/16:55 pmPHL - GEG
1 stop8h 01mDelta
Mon 5/56:59 pmGEG - PHL
1 stop7h 51mDelta
Deal found 3/25$323
This Booking.com deal was found by Cheapflights users on 3/25. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/21:02 pmPHL - GEG
1 stop25h 01mFrontier
Sun 6/811:48 amGEG - PHL
1 stop14h 22mFrontier
Deal found 3/25$338
This Booking.com deal was found by Cheapflights users on 3/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/226:15 amPHL - BOI
1 stop7h 36mFrontier
Sun 5/2512:36 pmBOI - PHL
1 stop14h 31mFrontier
Deal found 3/24$338
This United Airlines deal was found by Cheapflights users on 3/24. 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 5/246:30 amPHL - BOI
1 stop7h 13mUnited Airlines
Tue 5/277:07 pmBOI - PHL
1 stop8h 50mUnited Airlines
Deal found 3/24$342
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Tue 4/84:45 pmPHL - BOI
1 stop8h 49mAmerican Airlines
Sat 4/127:05 amBOI - PHL
1 stop7h 38mAmerican Airlines
Deal found 3/24$343
This Southwest deal was found by Cheapflights users on 3/24. 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.
Tue 8/123:40 pmPHL - BOI
2 stops9h 25mSouthwest
Sat 8/235:10 amBOI - PHL
1 stop6h 25mSouthwest
Deal found 3/24$378
This Gotogate deal was found by Cheapflights users on 3/24. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2712:05 pmPHL - BOI
1 stop7h 51mSun Country Air
Sun 8/36:55 pmBOI - PHL
1 stop14h 15mSun Country Air
Deal found 3/24$395
This Southwest deal was found by Cheapflights users on 3/26. 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.
Sat 7/126:35 amPHL - GEG
1 stop10h 15mSouthwest
Sat 7/266:05 amGEG - PHL
2 stops12h 55mSouthwest
Deal found 3/26$397
This American Airlines deal was found by Cheapflights users on 3/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:31 amPHL - IDA
1 stop7h 41mAmerican Airlines
Sat 11/11:50 pmIDA - PHL
1 stop9h 07mAmerican Airlines
Deal found 3/25$399
This Alaska Airlines deal was found by Cheapflights users on 3/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/75:46 pmPHL - GEG
1 stop8h 18mAlaska Airlines
Tue 4/87:30 pmGEG - PHL
1 stop7h 30mAlaska Airlines
Deal found 3/25$407

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 March 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

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Mon 4/21

6:34 pm-12:09 am

1 stop7h 35m

Boise Air Term. Gowen Fld

Sat 4/26

3:30 pm-11:50 pm

1 stop6h 20m

$284

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 4/8

10:08 pm-12:57 pm

1 stop16h 49m

Boise Air Term. Gowen Fld

Sat 4/12

2:11 pm-5:52 am

2 stops37h 41m

$320

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Thu 5/1

6:55 pm-11:56 pm

1 stop8h 01m

Spokane

Mon 5/5

6:59 pm-5:50 am

1 stop7h 51m

$323

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Thu 5/22

6:15 am-11:51 am

1 stop7h 36m

Boise Air Term. Gowen Fld

Sun 5/25

12:36 pm-5:07 am

1 stop14h 31m

$338

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Sat 5/24

6:30 am-11:43 am

1 stop7h 13m

Boise Air Term. Gowen Fld

Tue 5/27

7:07 pm-5:57 am

1 stop8h 50m

$342

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 4/8

4:45 pm-11:34 pm

1 stop8h 49m

Boise Air Term. Gowen Fld

Sat 4/12

7:05 am-4:43 pm

1 stop7h 38m

$343

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Thu 6/5

7:10 pm-12:30 am

1 stop7h 20m

Boise Air Term. Gowen Fld

Sun 6/8

5:20 am-5:20 pm

2 stops10h 00m

$403

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Mon 4/7

5:46 pm-11:04 pm

1 stop8h 18m

Spokane

Tue 4/8

7:30 pm-6:00 am

1 stop7h 30m

$407

PhiladelphiaIdaho Falls

PHL - IDA

PHLIDA

Philadelphia

Fri 5/9

2:55 pm-9:17 pm

1 stop8h 22m

Idaho Falls Fanning Field

Mon 5/12

1:02 pm-10:50 pm

1 stop7h 48m

$422

PhiladelphiaJackson

PHL - JAC

PHLJAC

Philadelphia

Tue 5/6

8:00 am-1:16 pm

1 stop7h 16m

Jackson Hole

Wed 5/7

7:00 am-3:44 pm

1 stop6h 44m

$431

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 38 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 $421). 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 March 26, 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.

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

Plan your trip to Idaho by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Idaho, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

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 March 26, 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Philadelphia to Idaho to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Crew

8.6

Overall

8.1

Boarding

8.2

Comfort

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Crew

8.6

Overall

8.1

Boarding

8.2

Comfort

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,789 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Crew

8.6

Overall

8.1

Boarding

8.2

Comfort

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,891 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Crew

8.6

Overall

8.1

Boarding

8.2

Comfort

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Hawaiian Airlines
7.9
Good
2,331 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Crew

8.6

Overall

8.1

Boarding

8.2

Comfort

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,608 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Crew

8.6

Overall

8.1

Boarding

8.2

Comfort

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 American Airlines ($162), Sun Country Air ($193), and Delta ($200).

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

    While some choose either Philadelphia - Spokane or Philadelphia - Boise Air Term. Gowen Fld, 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, 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 $421). 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 March 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$160Average$278FlexibilityNo cancel feeOn-time65%
DeltaCheapest$315Average$631FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$341Average$423FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$346Average$588FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$372Average$661FlexibilityNo cancel feeOn-time69%
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