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$174+ 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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BOI
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Philadelphia to Idaho

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Idaho (USID). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$241
(Cheapflightsfares)

One-way from

$174
(United Airlines)
From Philadelphia to Idaho
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One-way flight from Philadelphia to Idaho
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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 January 21, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 1/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/3010:08 pmPHL - BOI
1 stop16h 28mSpirit Airlines
Wed 4/21:31 pmBOI - PHL
1 stop14h 13mSpirit Airlines
Deal found 1/20$241
This Mytrip deal was found by Cheapflights users on 1/20. 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 2/46:15 amPHL - BOI
3 stops36h 00mMultiple Airlines
Mon 2/107:38 pmBOI - PHL
1 stop18h 34mMultiple Airlines
Deal found 1/20$335
This Delta deal was found by Cheapflights users on 1/19. 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 2/186:46 pmPHL - GEG
1 stop7h 06mDelta
Tue 2/252:10 pmGEG - PHL
1 stop6h 43mDelta
Deal found 1/19$347
This American Airlines deal was found by Cheapflights users on 1/20. 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.
Sat 4/194:45 pmPHL - BOI
1 stop8h 50mAmerican Airlines
Wed 4/231:51 pmBOI - PHL
1 stop8h 08mAmerican Airlines
Deal found 1/20$355
This Delta deal was found by Cheapflights users on 1/20. 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.
Sat 4/1912:45 pmPHL - BOI
2 stops12h 05mDelta
Wed 4/235:40 amBOI - PHL
1 stop6h 21mDelta
Deal found 1/20$360
This United Airlines deal was found by Cheapflights users on 1/20. 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 5/63:46 pmPHL - BOI
1 stop7h 56mUnited Airlines
Tue 5/132:43 pmBOI - PHL
1 stop6h 52mUnited Airlines
Deal found 1/20$363
This United Airlines deal was found by Cheapflights users on 1/20. 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 6/34:56 pmPHL - GEG
1 stop8h 00mUnited Airlines
Thu 6/126:25 pmGEG - PHL
1 stop7h 50mUnited Airlines
Deal found 1/20$392
This Orbitz deal was found by Cheapflights users on 1/20. 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.
Thu 7/1012:05 pmPHL - GEG
1 stop7h 00mMultiple Airlines
Tue 7/156:30 pmGEG - PHL
1 stop8h 31mMultiple Airlines
Deal found 1/20$395
This Alaska Airlines deal was found by Cheapflights users on 1/19. 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.
Fri 8/226:35 pmPHL - GEG
1 stop8h 24mAlaska Airlines
Tue 8/267:20 pmGEG - PHL
1 stop7h 41mAlaska Airlines
Deal found 1/19$396
This Delta deal was found by Cheapflights users on 1/20. 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 5/77:00 amPHL - JAC
1 stop7h 08mDelta
Tue 5/137:15 amJAC - PHL
1 stop8h 32mDelta
Deal found 1/20$403
This Sun Country Air deal was found by Cheapflights users on 1/21. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/612:05 pmPHL - GEG
1 stop7h 00mSun Country Air
Sun 7/135:05 pmGEG - PHL
1 stop15h 05mSun Country Air
Deal found 1/21$415
This American Airlines deal was found by Cheapflights users on 1/20. 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.
Mon 10/207:15 amPHL - JAC
1 stop6h 44mAmerican Airlines
Mon 10/271:52 pmJAC - PHL
1 stop8h 21mAmerican Airlines
Deal found 1/20$445

Find flights from Philadelphia to Idaho within your budget

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Sun 3/30

10:08 pm-12:36 pm

1 stop16h 28m

Boise Air Term. Gowen Fld

Wed 4/2

1:31 pm-5:44 am

1 stop14h 13m

$241

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 2/4

6:15 am-4:15 pm

3 stops36h 00m

Boise Air Term. Gowen Fld

Mon 2/10

7:38 pm-4:12 pm

1 stop18h 34m

$335

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 4/15

6:30 pm-11:58 pm

1 stop7h 28m

Boise Air Term. Gowen Fld

Thu 4/17

7:55 pm-5:46 am

1 stop7h 51m

$343

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Tue 2/18

6:46 pm-10:52 pm

1 stop7h 06m

Spokane

Tue 2/25

2:10 pm-11:53 pm

1 stop6h 43m

$347

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Sat 4/19

4:45 pm-11:35 pm

1 stop8h 50m

Boise Air Term. Gowen Fld

Wed 4/23

1:51 pm-11:59 pm

1 stop8h 08m

$355

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 5/6

3:46 pm-9:42 pm

1 stop7h 56m

Boise Air Term. Gowen Fld

Tue 5/13

2:43 pm-11:35 pm

1 stop6h 52m

$363

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Tue 6/3

4:56 pm-9:56 pm

1 stop8h 00m

Spokane

Thu 6/12

6:25 pm-5:15 am

1 stop7h 50m

$392

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Thu 7/10

12:05 pm-4:05 pm

1 stop7h 00m

Spokane

Tue 7/15

6:30 pm-6:01 am

1 stop8h 31m

$395

PhiladelphiaJackson

PHL - JAC

PHLJAC

Philadelphia

Wed 5/7

7:00 am-12:08 pm

1 stop7h 08m

Jackson Hole

Tue 5/13

7:15 am-5:47 pm

1 stop8h 32m

$403

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Sun 7/6

12:05 pm-4:05 pm

1 stop7h 00m

Spokane

Sun 7/13

5:05 pm-11:10 am

1 stop15h 05m

$415

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 44 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.

Travel insights for flights from Philadelphia to Idaho

Get recent, data-driven insights about flights from Philadelphia to Idaho including ideal travel times, pricing trends, and more.

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 $436). 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 January 21, 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 January 21, 2025.
Peruse reviews from past customers who have flown with Spirit Airlines, Delta and American Airlines 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
4,659 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,706 reviews
Southwest
8.1
Very good
4,659 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,521 reviews
Southwest
8.1
Very good
4,659 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,984 reviews
Southwest
8.1
Very good
4,659 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,659 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 United Airlines ($174), Delta ($182), and Sun Country Air ($203).

  • 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 $436). 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$196Average$279FlexibilityNo cancel feeOn-time65%
DeltaCheapest$298Average$679FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$341Average$416FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$349Average$588FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$436Average$707FlexibilityNo cancel feeOn-time69%
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