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$78+ Cheap flights from Illinois to Pennsylvania

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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PHL
Aug 6 — Aug 131
Wed 8/6
Wed 8/13
1 adult, Economy
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Cheap flight deals from Illinois to Pennsylvania

Keep the following information in mind while searching for Illinois to Pennsylvania flight deals. Data was last updated August 1, 2025.

Round-trip from

$121
(Kiwi.com)

One-way from

$78
(eDestinos)

Popular in

March

Cheapest in

September

Average price

$148

Good round-trip deal

$97 or less

Good one-way deal

$89 or less
From Illinois to Pennsylvania
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One-way flight from Illinois to Pennsylvania
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Highest demand for flights based on searches. 25% potential increase in price ($85 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Illinois to Pennsylvania.
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Price to beat on a one-way flight from Illinois to Pennsylvania.
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Find flight deals from Illinois to Pennsylvania

Cheapest flights from Illinois to Pennsylvania
Explore the most affordable flight options available from Illinois to Pennsylvania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Thu 9/1111:13 amORD - LGA
Nonstop2h 05mSpirit Airlines
Tue 9/303:13 pmLGA - ORD
Nonstop2h 38mSpirit Airlines
Deal found 7/31$121
This Frontier deal was found by Cheapflights users on 7/31. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/111:45 amORD - JFK
1 stop12h 23mFrontier
Wed 10/811:00 amJFK - ORD
Nonstop2h 45mFrontier
Deal found 7/31$130
This Delta deal was found by Cheapflights users on 7/29. 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.
Wed 9/37:10 amORD - LGA
Nonstop2h 15mDelta
Wed 9/34:05 pmLGA - ORD
Nonstop2h 57mDelta
Deal found 7/29$137
This Frontier deal was found by Cheapflights users on 7/31. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/158:27 pmORD - PHL
Nonstop2h 26mFrontier
Sun 8/179:19 pmPHL - ORD
Nonstop2h 35mFrontier
Deal found 7/31$140
This Southwest deal was found by Cheapflights users on 7/31. 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.
Wed 9/37:05 pmMDW - LGA
Nonstop2h 10mSouthwest
Sat 9/67:30 amLGA - MDW
Nonstop2h 20mSouthwest
Deal found 7/31$142
This Delta deal was found by Cheapflights users on 7/31. 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 9/36:20 pmORD - JFK
Nonstop2h 43mDelta
Sat 9/63:29 pmJFK - ORD
Nonstop3h 08mDelta
Deal found 7/31$142
This Trip.com deal was found by Cheapflights users on 7/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/36:10 amORD - JFK
Nonstop2h 19mJetBlue
Sat 9/64:30 pmJFK - ORD
Nonstop2h 53mJetBlue
Deal found 7/30$149
This American Airlines deal was found by Cheapflights users on 7/31. 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 9/61:02 pmORD - LGA
Nonstop2h 12mAmerican Airlines
Mon 9/86:54 pmLGA - ORD
Nonstop2h 41mAmerican Airlines
Deal found 7/31$157
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Thu 9/41:59 pmORD - JFK
Nonstop2h 18mAmerican Airlines
Sat 9/611:00 amJFK - ORD
Nonstop2h 41mAmerican Airlines
Deal found 7/30$157
This FlightHub deal was found by Cheapflights users on 7/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/186:10 amORD - PHL
Nonstop2h 15mMultiple Airlines
Wed 9/242:07 pmPHL - ORD
1 stop8h 51mMultiple Airlines
Deal found 7/30$159
This Booking.com deal was found by Cheapflights users on 7/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/238:12 pmORD - EWR
1 stop12h 14mSpirit Airlines
Mon 8/255:30 amEWR - ORD
1 stop11h 56mSpirit Airlines
Deal found 7/30$159
This Frontier deal was found by Cheapflights users on 7/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/65:15 pmMDW - EWR
1 stop6h 19mFrontier
Thu 10/1610:00 pmEWR - MDW
Nonstop2h 25mFrontier
Deal found 7/30$160

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Pennsylvania 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 August 1, 2025.
Use the filters below to find and compare flights from Illinois to Pennsylvania that are best for you.

Fly from

Illinois

Fly to

Pennsylvania

Route

Depart

Return

Price

ChicagoNew York

ORD - LGA

ORDLGA

Chicago O'Hare Intl

Thu 9/11

11:13 am-2:18 pm

Nonstop2h 05m

New York LaGuardia

Wed 10/1

3:13 pm-4:51 pm

Nonstop2h 38m

$121

ChicagoNew York

ORD - JFK

ORDJFK

Chicago O'Hare Intl

Wed 10/1

11:45 am-1:08 am

1 stop12h 23m

New York John F Kennedy Intl

Wed 10/8

11:00 am-12:45 pm

Nonstop2h 45m

$130

ChicagoNew York

ORD - LGA

ORDLGA

Chicago O'Hare Intl

Wed 9/3

7:10 am-10:25 am

Nonstop2h 15m

New York LaGuardia

Wed 9/3

4:05 pm-6:02 pm

Nonstop2h 57m

$137

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

Fri 8/15

8:27 pm-11:53 pm

Nonstop2h 26m

Philadelphia

Sun 8/17

9:19 pm-10:54 pm

Nonstop2h 35m

$140

ChicagoNew York

ORD - LGA

ORDLGA

Chicago O'Hare Intl

Wed 9/3

5:00 pm-8:17 pm

Nonstop2h 17m

New York LaGuardia

Sat 9/6

6:25 am-8:02 am

Nonstop2h 37m

$142

ChicagoNew York

MDW - LGA

MDWLGA

Chicago Midway

Wed 9/3

7:05 pm-10:15 pm

Nonstop2h 10m

New York LaGuardia

Sat 9/6

7:30 am-8:50 am

Nonstop2h 20m

$142

ChicagoNew York

ORD - JFK

ORDJFK

Chicago O'Hare Intl

Wed 9/3

6:20 pm-10:03 pm

Nonstop2h 43m

New York John F Kennedy Intl

Sat 9/6

3:29 pm-5:37 pm

Nonstop3h 08m

$142

ChicagoNew York

ORD - JFK

ORDJFK

Chicago O'Hare Intl

Wed 9/3

6:10 am-9:29 am

Nonstop2h 19m

New York John F Kennedy Intl

Sat 9/6

4:30 pm-6:23 pm

Nonstop2h 53m

$149

ChicagoNew York

ORD - LGA

ORDLGA

Chicago O'Hare Intl

Sat 9/6

1:02 pm-4:14 pm

Nonstop2h 12m

New York LaGuardia

Mon 9/8

6:54 pm-8:35 pm

Nonstop2h 41m

$157

ChicagoNew York

ORD - JFK

ORDJFK

Chicago O'Hare Intl

Thu 9/4

1:59 pm-5:17 pm

Nonstop2h 18m

New York John F Kennedy Intl

Sat 9/6

11:00 am-12:41 pm

Nonstop2h 41m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

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

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

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

Currently, August is the cheapest month in which you can book a flight from Illinois to Pennsylvania (average of $236). Flying from Illinois to Pennsylvania 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 IL to PA?

Find hourly flight availability from Illinois to Pennsylvania. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 1, 2025.

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

Weekly flight availability from Illinois to Pennsylvania

Explore weekly flight availability from Illinois to Pennsylvania. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 1, 2025.

The most flights from USIL to USPA are scheduled on a Thursday (46 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (23 on average).

Reviews of airlines servicing Pennsylvania

Get insights into the airlines that provide service to Pennsylvania. 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 Pennsylvania. Reviews last updated August 1, 2025.
Read through reviews of airlines operating flights from Illinois to Pennsylvania, 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
4,246 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,981 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,900 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
JetBlue
7.3
Good
2,914 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Pennsylvania. 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 Illinois to Pennsylvania one-way?

    The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $78. However, be on the lookout for offers from Frontier and JetBlue, as they are both options that can get you from Illinois to Pennsylvania for a low price.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Illinois to Pennsylvania (average of $236). Flying from Illinois to Pennsylvania 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

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Alternative routes for Illinois to Pennsylvania

See prices for flight routes from nearby airports that may be better suited for you.
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Dallas/Fort Worth to LaGuardia flights
John F Kennedy Intl to Los Angeles flights
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Top 6 airlines flying from Illinois to Pennsylvania

Discover the top 6 airlines that operate flights from Illinois to Pennsylvania. 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 August 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$139FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$63Average$326FlexibilityNo cancel feeOn-time65%
DeltaCheapest$108Average$477FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$113Average$386FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$116Average$354FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$119Average$412FlexibilityNo cancel feeOn-time69%

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