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Idaho

$98+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BOI
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
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 January 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$249
(American Airlines)

One-way from

$98
(Kiwi.com)

Popular in

January

Cheapest in

September

Average price

$665
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. 20% potential increase in price ($120 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 20, 2026.

This Delta deal was found by Cheapflights users on 1/17. 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 4/287:20 am
IAD
-
JAC
1 stop6h 43m
Delta
Wed 5/61:10 pm
JAC
-
IAD
1 stop8h 34m
Delta
Deal found 1/17$249
This American Airlines deal was found by Cheapflights users on 1/17. 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.
Wed 4/16:30 am
DCA
-
JAC
1 stop9h 53m
American Airlines
Wed 4/81:25 pm
JAC
-
DCA
1 stop7h 30m
American Airlines
Deal found 1/17$249
This American Airlines deal was found by Cheapflights users on 1/17. 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 3/36:00 am
DCA
-
JAC
1 stop8h 18m
American Airlines
Tue 3/101:44 pm
JAC
-
DCA
1 stop8h 06m
American Airlines
Deal found 1/17$250
This Delta deal was found by Cheapflights users on 1/17. 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 2/106:00 am
IAD
-
BOI
1 stop8h 30m
Delta
Sat 2/211:51 pm
BOI
-
IAD
1 stop7h 43m
Delta
Deal found 1/17$257
This Delta deal was found by Cheapflights users on 1/17. 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 2/106:59 pm
JFK
-
GEG
1 stop8h 00m
Delta
Tue 2/175:00 am
GEG
-
JFK
1 stop7h 29m
Delta
Deal found 1/17$257
This Delta deal was found by Cheapflights users on 1/17. 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 4/146:00 am
EWR
-
GEG
1 stop10h 03m
Delta
Wed 4/296:00 am
GEG
-
EWR
1 stop7h 59m
Delta
Deal found 1/17$257
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.
Wed 4/294:29 pm
JFK
-
BOI
1 stop9h 30m
Alaska Airlines
Wed 5/66:00 am
BOI
-
JFK
1 stop11h 11m
Alaska Airlines
Deal found 1/19$257
This Delta deal was found by Cheapflights users on 1/17. 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 2/107:05 am
IAD
-
BOI
1 stop7h 04m
Delta
Tue 2/1710:41 am
BOI
-
IAD
2 stops10h 28m
Delta
Deal found 1/17$262
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/77:29 pm
EWR
-
GEG
1 stop15h 27m
Hawaiian Airlines
Sat 3/147:05 am
GEG
-
EWR
1 stop8h 23m
Hawaiian Airlines
Deal found 1/19$271
This Delta deal was found by Cheapflights users on 1/17. 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 2/117:30 am
IAD
-
BOI
1 stop14h 42m
Delta
Wed 2/183:01 pm
BOI
-
IAD
1 stop6h 54m
Delta
Deal found 1/17$282
This Delta deal was found by Cheapflights users on 1/17. 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 2/106:00 am
IAD
-
BOI
2 stops9h 34m
Delta
Thu 2/197:30 am
BOI
-
IAD
1 stop13h 40m
Delta
Deal found 1/17$287
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.
Wed 2/254:25 pm
JFK
-
GEG
1 stop9h 36m
Alaska Airlines
Sun 3/15:00 am
GEG
-
JFK
1 stop7h 45m
Alaska Airlines
Deal found 1/19$288

Cheapflights Fare Finder

 
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 January 20, 2026.
Use the filters below to find and compare flights from Pennsylvania to Idaho that are best for you.

Fly from

Pennsylvania

Fly to

Idaho

Route

Depart

Return

Price

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Tue 2/10

6:00 am-12:30 pm

1 stop8h 30m

Boise Air Term. Gowen Fld

Sat 2/21

1:51 pm-11:34 pm

1 stop7h 43m

$257

New YorkBoise

JFK - BOI

JFKBOI

New York John F Kennedy Intl

Wed 4/29

7:00 am-3:33 pm

1 stop10h 33m

Boise Air Term. Gowen Fld

Wed 5/6

6:00 am-7:11 pm

1 stop11h 11m

$257

New YorkSpokane

JFK - GEG

JFKGEG

New York John F Kennedy Intl

Tue 4/14

7:50 am-1:03 pm

1 stop8h 13m

Spokane

Wed 4/29

5:10 pm-6:18 am

1 stop10h 08m

$257

NewarkSpokane

EWR - GEG

EWRGEG

Newark

Tue 4/14

6:00 am-1:03 pm

1 stop10h 03m

Spokane

Wed 4/29

6:00 am-4:59 pm

1 stop7h 59m

$257

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Tue 2/10

6:00 am-1:34 pm

2 stops9h 34m

Boise Air Term. Gowen Fld

Wed 2/18

5:20 am-1:34 pm

1 stop6h 14m

$262

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sat 2/14

12:38 pm-8:55 pm

2 stops10h 17m

Boise Air Term. Gowen Fld

Sat 2/21

1:51 pm-11:34 pm

1 stop7h 43m

$262

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Tue 2/10

6:00 am-1:34 pm

2 stops9h 34m

Boise Air Term. Gowen Fld

Tue 2/17

10:41 am-11:09 pm

2 stops10h 28m

$268

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Tue 2/10

7:05 am-12:09 pm

1 stop7h 04m

Boise Air Term. Gowen Fld

Thu 2/19

7:30 am-11:10 pm

1 stop13h 40m

$282

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 2/11

7:30 am-8:12 pm

1 stop14h 42m

Boise Air Term. Gowen Fld

Wed 2/18

3:01 pm-11:55 pm

1 stop6h 54m

$282

New YorkSpokane

JFK - GEG

JFKGEG

New York John F Kennedy Intl

Wed 2/25

5:00 pm-10:51 pm

1 stop8h 51m

Spokane

Sun 3/1

7:26 pm-3:45 pm

1 stop17h 19m

$288

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

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.

Cheapflights Insights

Everything you need to know about your flight from Pennsylvania to Idaho

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

Currently, September is the cheapest month in which you can book a flight from Pennsylvania to Idaho (average of $88). Flying from Pennsylvania to Idaho in December is currently the most expensive (average of $334). 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.

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 20, 2026.
Read through reviews of airlines operating flights from Pennsylvania to Idaho, such as Southwest, Delta, and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,267 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

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
4,267 reviews
Southwest
8.0
Very good
4,267 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

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
8,076 reviews
Southwest
8.0
Very good
4,267 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

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
9,180 reviews
Southwest
8.0
Very good
4,267 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

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
11,164 reviews
Southwest
8.0
Very good
4,267 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

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 Pennsylvania to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Pennsylvania to Idaho?

    For as low as $257, Delta can have you in Idaho from Pennsylvania in 8h 30m. There are 2019 mi between Pennsylvania and Idaho. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $171. However, be on the lookout for offers from Southwest and United 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, September is the cheapest month in which you can book a flight from Pennsylvania to Idaho (average of $88). Flying from Pennsylvania to Idaho in December is currently the most expensive (average of $334). 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 4 airlines flying from Pennsylvania to Idaho

Discover the top 4 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 January 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$193Average$506FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$213Average$601FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$232Average$528FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$358Average$456FlexibilityNo cancel feeOn-time63%

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