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$164+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — PHL
feb. 4 — feb. 111
mar. 2/4
mar. 2/11
1 adult, Economy
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Cheap flight deals from Idaho to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Idaho (USID) to Philadelphia (PHL). 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 enero 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$186
(FlightHub)

One-way from

$164
(American Airlines)

Popular in

October

Cheapest in

February

Average price

$401
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Philadelphia flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Philadelphia flights.
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From Idaho to Philadelphia
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One-way flight from Idaho to Philadelphia
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High demand for flights, 1% potential price rise
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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 January 2025
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Find 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 enero 30, 2025.

This FlightHub deal was found by Cheapflights users on 1/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/277:41 pmBOI - PHL
1 stop25h 25mSpirit Airlines
lun. 3/35:41 pmPHL - BOI
1 stop27h 05mSpirit Airlines
Deal found 1/29$186
This Booking.com deal was found by Cheapflights users on 1/29. 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.
jue. 8/146:55 pmBOI - PHL
1 stop14h 15mSun Country Air
dom. 8/1712:05 pmPHL - BOI
1 stop7h 51mSun Country Air
Deal found 1/29$310
This United Airlines deal was found by Cheapflights users on 1/29. 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.
mié. 2/2611:05 amBOI - PHL
1 stop8h 37mUnited Airlines
mié. 3/56:30 amPHL - BOI
1 stop7h 30mUnited Airlines
Deal found 1/29$343
This Delta deal was found by Cheapflights users on 1/29. 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.
mié. 2/267:30 pmBOI - PHL
2 stops14h 36mDelta
mié. 3/56:00 amPHL - BOI
2 stops12h 16mDelta
Deal found 1/29$353
This American Airlines deal was found by Cheapflights users on 1/30. 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.
vie. 4/115:34 amGEG - PHL
1 stop8h 09mAmerican Airlines
mar. 4/154:45 pmPHL - GEG
1 stop9h 15mAmerican Airlines
Deal found 1/30$393
This Alaska Airlines deal was found by Cheapflights users on 1/29. 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.
mié. 11/57:30 amGEG - PHL
1 stop19h 31mAlaska Airlines
sáb. 11/86:35 pmPHL - GEG
1 stop8h 24mAlaska Airlines
Deal found 1/29$396
This Delta deal was found by Cheapflights users on 1/29. 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.
jue. 6/511:55 amGEG - PHL
1 stop8h 44mDelta
lun. 6/91:00 pmPHL - GEG
2 stops12h 42mDelta
Deal found 1/29$402
This Expedia deal was found by Cheapflights users on 1/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/232:30 pmBOI - PHL
1 stop13h 24mMultiple Airlines
mar. 5/67:04 amPHL - BOI
1 stop8h 43mMultiple Airlines
Deal found 1/28$405
This Southwest deal was found by Cheapflights users on 1/30. 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.
vie. 4/115:25 amGEG - PHL
1 stop9h 45mSouthwest
mar. 4/152:40 pmPHL - GEG
2 stops11h 35mSouthwest
Deal found 1/30$410
This Southwest deal was found by Cheapflights users on 1/28. 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.
mié. 4/2310:50 amBOI - PHL
1 stop10h 15mSouthwest
mar. 5/62:40 pmPHL - BOI
2 stops10h 50mSouthwest
Deal found 1/28$431
This United Airlines deal was found by Cheapflights users on 1/29. 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.
vie. 6/66:25 pmGEG - PHL
1 stop7h 50mUnited Airlines
mar. 6/176:30 amPHL - GEG
1 stop7h 26mUnited Airlines
Deal found 1/29$432
This Delta deal was found by Cheapflights users on 1/30. 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.
vie. 2/211:10 pmJAC - PHL
1 stop8h 42mDelta
lun. 2/245:40 amPHL - JAC
1 stop9h 38mDelta
Deal found 1/30$445

Find flights from Idaho to Philadelphia within your budget

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 enero 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

jue. 2/27

7:41 pm-11:06 pm

1 stop25h 25m

Philadelphia

lun. 3/3

5:41 pm-6:46 pm

1 stop27h 05m

$186

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

mié. 2/26

11:05 am-9:42 pm

1 stop8h 37m

Philadelphia

mié. 3/5

6:30 am-12:00 pm

1 stop7h 30m

$343

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

mié. 2/26

7:30 pm-12:06 pm

2 stops14h 36m

Philadelphia

mié. 3/5

6:00 am-4:16 pm

2 stops12h 16m

$353

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

mié. 3/12

5:10 am-3:10 pm

1 stop7h 00m

Philadelphia

mié. 3/19

3:55 pm-10:55 pm

1 stop10h 00m

$360

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

vie. 6/6

6:25 pm-5:15 am

1 stop7h 50m

Philadelphia

mar. 6/17

8:31 am-5:34 pm

2 stops12h 03m

$402

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

mié. 4/23

2:30 pm-5:54 am

1 stop13h 24m

Philadelphia

mar. 5/6

7:04 am-1:47 pm

1 stop8h 43m

$405

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

jue. 6/5

5:00 pm-5:46 am

1 stop9h 46m

Philadelphia

lun. 6/9

1:00 pm-10:42 pm

2 stops12h 42m

$422

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

mié. 4/23

10:50 am-11:05 pm

1 stop10h 15m

Philadelphia

mar. 5/6

2:40 pm-11:30 pm

2 stops10h 50m

$431

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

mié. 2/26

5:34 am-5:23 pm

1 stop8h 49m

Philadelphia

vie. 2/28

4:54 pm-11:07 pm

1 stop9h 13m

$433

JacksonPhiladelphia

JAC - PHL

JACPHL

Jackson Hole

vie. 2/21

1:10 pm-11:52 pm

1 stop8h 42m

Philadelphia

lun. 2/24

5:40 am-1:18 pm

1 stop9h 38m

$445

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/30

Showing 1-10 of 32 results
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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.

Travel insights for flights from Idaho to Philadelphia

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

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

Currently, August is the cheapest month in which you can book a flight from Idaho to Philadelphia (average of $236). Flying from Idaho to Philadelphia in March is currently the most expensive (average of $295). 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 ID to PHL?

Find hourly flight availability from Idaho to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated enero 30, 2025.

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

Rainfall in Philadelphia by month

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

In terms of precipitation, rainfall in Philadelphia ranges from 2.7 - 4.4 inches per month. July is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Philadelphia when rainfall is around 2.7 in.

Temperature in Philadelphia by month

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

If weather is an important factor for your trip to Philadelphia, 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 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. 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 Philadelphia. Reviews last updated enero 30, 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from Idaho to Philadelphia. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,585 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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
4,585 reviews
Southwest
8.1
Very good
4,585 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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
9,686 reviews
Southwest
8.1
Very good
4,585 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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
8,450 reviews
Southwest
8.1
Very good
4,585 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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
8,906 reviews
Southwest
8.1
Very good
4,585 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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
4,585 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

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 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.

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

    $164 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 Delta and Alaska Airlines, with prices starting from $199 and $228, 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, August is the cheapest month in which you can book a flight from Idaho to Philadelphia (average of $236). Flying from Idaho to Philadelphia in March is currently the most expensive (average of $295). 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 Idaho?

Book flights to Idaho if you plan to visit one of these locations
King of Prussia
Vineland
Wildwood
Pottstown
Reading
Exton
Ocean City
Cherry Hill
Essington
Chester
Willow Grove
Newark
Middletown
Millville
Wyomissing
Ephrata
Dewey Beach
West Chester
Malvern
Dover

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Alternative routes for Idaho to Philadelphia

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

Discover the top 5 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 enero 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$177Average$307FlexibilityNo cancel feeOn-time65%
DeltaCheapest$316Average$459FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$338Average$588FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$367Average$502FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$376Average$665FlexibilityNo cancel feeOn-time69%
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