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$140+ Cheap flights from Pennsylvania 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 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BOI
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
1 adult, Economy
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Cheap flight deals from Pennsylvania to Idaho

Keep the following information in mind while searching for Pennsylvania to Idaho flight deals. Data was last updated febrero 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$231
(Delta)

One-way from

$140
(Alaska Airlines)

Popular in

November

Cheapest in

April

Average price

$529
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 Pennsylvania to Idaho
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One-way flight from Pennsylvania 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 ($11 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Pennsylvania to Idaho

Cheapest flights from Pennsylvania to Idaho
Explore the most affordable flight options available from Pennsylvania to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on febrero 20, 2025.

This Delta deal was found by Cheapflights users on 2/19. 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.
sáb. 4/57:43 amIAD - BOI
1 stop10h 17mDelta
lun. 4/77:15 pmBOI - IAD
1 stop8h 53mDelta
Deal found 2/19$231
This Kiwi.com deal was found by Cheapflights users on 2/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/77:00 amIAD - BOI
1 stop8h 52mHawaiian Airlines
lun. 4/146:40 pmBOI - IAD
1 stop9h 00mHawaiian Airlines
Deal found 2/19$239
This Southwest deal was found by Cheapflights users on 2/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/13:40 pmIAD - BOI
1 stop9h 50mSouthwest
mié. 4/168:40 amBOI - IAD
2 stops11h 55mSouthwest
Deal found 2/20$271
This American Airlines deal was found by Cheapflights users on 2/20. 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.
sáb. 3/224:48 pmEWR - GEG
1 stop9h 16mAmerican Airlines
sáb. 3/293:30 pmGEG - EWR
1 stop11h 02mAmerican Airlines
Deal found 2/20$280
This Delta deal was found by Cheapflights users on 2/20. 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.
mar. 3/257:00 amEWR - GEG
1 stop8h 20mDelta
mar. 4/16:56 pmGEG - EWR
1 stop7h 46mDelta
Deal found 2/20$281
This American Airlines deal was found by Cheapflights users on 2/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/26:18 amIAD - BOI
1 stop8h 28mAmerican Airlines
dom. 4/61:23 pmBOI - IAD
1 stop7h 19mAmerican Airlines
Deal found 2/19$295
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
mié. 4/27:31 amIAD - GEG
1 stop18h 31mAlaska Airlines
mié. 4/93:40 pmGEG - IAD
1 stop10h 54mAlaska Airlines
Deal found 2/19$296
This Delta deal was found by Cheapflights users on 2/20. 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.
jue. 4/177:35 amIAD - GEG
1 stop7h 32mDelta
mar. 4/221:15 pmGEG - IAD
1 stop7h 16mDelta
Deal found 2/20$297
This United Airlines deal was found by Cheapflights users on 2/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/58:30 amIAD - BOI
1 stop7h 02mUnited Airlines
lun. 4/77:00 pmBOI - IAD
1 stop8h 15mUnited Airlines
Deal found 2/19$298
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/254:05 pmJFK - GEG
1 stop10h 22mAlaska Airlines
mar. 4/19:41 pmGEG - JFK
1 stop14h 19mAlaska Airlines
Deal found 2/20$298
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/35:50 pmEWR - GEG
1 stop8h 13mAlaska Airlines
mié. 4/94:00 pmGEG - EWR
1 stop10h 40mAlaska Airlines
Deal found 2/20$298
This Delta deal was found by Cheapflights users on 2/19. 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.
jue. 5/16:05 amLGA - GEG
1 stop10h 00mDelta
sáb. 5/32:15 pmGEG - LGA
1 stop6h 22mDelta
Deal found 2/19$299

Find flights from Pennsylvania to Idaho within your budget

Customize your flight search to find flights from Pennsylvania 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 febrero 20, 2025.

Fly from

Pennsylvania

Fly to

Idaho

Route

Depart

Return

Price

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

sáb. 4/5

7:43 am-4:00 pm

1 stop10h 17m

Boise Air Term. Gowen Fld

lun. 4/7

7:15 pm-6:08 am

1 stop8h 53m

$231

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

lun. 4/7

7:00 am-1:52 pm

1 stop8h 52m

Boise Air Term. Gowen Fld

lun. 4/14

6:40 pm-5:40 am

1 stop9h 00m

$239

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

mar. 4/1

3:40 pm-11:30 pm

1 stop9h 50m

Boise Air Term. Gowen Fld

mié. 4/16

8:40 am-10:35 pm

2 stops11h 55m

$271

NewarkSpokane

EWR - GEG

EWRGEG

Newark

sáb. 3/22

4:48 pm-11:04 pm

1 stop9h 16m

Spokane

sáb. 3/29

3:30 pm-5:32 am

1 stop11h 02m

$280

NewarkSpokane

EWR - GEG

EWRGEG

Newark

mar. 3/25

7:00 am-12:20 pm

1 stop8h 20m

Spokane

mar. 4/1

6:56 pm-5:42 am

1 stop7h 46m

$281

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

mié. 4/2

6:18 am-12:46 pm

1 stop8h 28m

Boise Air Term. Gowen Fld

dom. 4/6

1:23 pm-10:42 pm

1 stop7h 19m

$295

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

mié. 4/2

7:31 am-11:02 pm

1 stop18h 31m

Spokane

mié. 4/9

3:40 pm-5:34 am

1 stop10h 54m

$296

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

jue. 4/17

7:35 am-12:07 pm

1 stop7h 32m

Spokane

mar. 4/22

1:15 pm-11:31 pm

1 stop7h 16m

$297

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

sáb. 4/5

8:30 am-1:32 pm

1 stop7h 02m

Boise Air Term. Gowen Fld

lun. 4/7

7:00 pm-5:15 am

1 stop8h 15m

$298

New YorkSpokane

JFK - GEG

JFKGEG

New York John F Kennedy Intl

mar. 3/25

4:05 pm-11:27 pm

1 stop10h 22m

Spokane

mar. 4/1

9:41 pm-3:00 pm

1 stop14h 19m

$298

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 60 results
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Best time to book a flight from Pennsylvania to Idaho

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

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

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

Currently, October is the cheapest month in which you can book a flight from Pennsylvania to Idaho (average of $314). Flying from Pennsylvania 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 PA to ID?

Find hourly flight availability from Pennsylvania 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 febrero 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Pennsylvania 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 febrero 20, 2025.
To help decide which airline to fly from Pennsylvania to Idaho, see what other customers have to say about Southwest, Alaska Airlines and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Qatar Airways
7.4
Good
3,609 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Related info for your journey

Find useful and relevant information for your journey from Pennsylvania to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $140. However, be on the lookout for offers from Delta and American Airlines, as they are both options that can get you from Pennsylvania to Idaho for a low price.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Pennsylvania to Idaho (average of $314). Flying from Pennsylvania 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 Pennsylvania 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 Pennsylvania to Idaho

Discover the top 5 airlines that operate flights from Pennsylvania 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 febrero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$177Average$281FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$291Average$655FlexibilityNo cancel feeOn-time69%
DeltaCheapest$298Average$571FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$318Average$555FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$341Average$431FlexibilityNo cancel feeOn-time63%
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