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$70+ 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 2/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PHL
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$110
(Cheapflightsfares)

One-way from

$70
(United Airlines)

Popular in

March

Cheapest in

October

Average price

$185

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. 21% potential increase in price ($72 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 15, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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.
Sat 9/2711:57 amORD - LGA
1 stop8h 08mSpirit Airlines
Mon 9/297:59 pmLGA - ORD
1 stop14h 19mSpirit Airlines
Deal found 9/13$110
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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.
Wed 10/156:58 pmORD - LGA
1 stop13h 02mSpirit Airlines
Wed 10/223:29 pmLGA - ORD
Nonstop2h 44mSpirit Airlines
Deal found 9/14$111
This Mytrip deal was found by Cheapflights users on 9/13. 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.
Sat 9/2711:12 amORD - LGA
Nonstop2h 05mSpirit Airlines
Tue 9/303:13 pmLGA - ORD
Nonstop2h 38mSpirit Airlines
Deal found 9/13$112
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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.
Sat 10/1111:55 amORD - LGA
1 stop10h 30mSpirit Airlines
Tue 10/1411:59 amLGA - ORD
1 stop12h 46mSpirit Airlines
Deal found 9/13$113
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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.
Wed 10/156:40 amORD - JFK
Nonstop2h 23mFrontier
Sat 10/186:20 amJFK - ORD
1 stop6h 15mFrontier
Deal found 9/13$113
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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.
Mon 9/296:30 amORD - LGA
1 stop12h 59mSpirit Airlines
Thu 10/27:59 pmLGA - ORD
1 stop14h 19mSpirit Airlines
Deal found 9/14$114
This Frontier deal was found by Cheapflights users on 9/13. 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 10/156:40 amORD - JFK
Nonstop2h 23mFrontier
Thu 10/166:59 amJFK - ORD
1 stop10h 58mFrontier
Deal found 9/13$114
This Priceline deal was found by Cheapflights users on 9/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/110:27 amORD - LGA
1 stop11h 36mMultiple Airlines
Sat 10/46:30 amLGA - ORD
1 stop5h 57mMultiple Airlines
Deal found 9/13$115
This Frontier deal was found by Cheapflights users on 9/15. 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 10/86:40 amORD - JFK
Nonstop2h 23mFrontier
Sat 10/1112:59 pmJFK - ORD
1 stop12h 00mFrontier
Deal found 9/15$115
This Mytrip deal was found by Cheapflights users on 9/13. 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.
Sat 10/1811:55 amORD - LGA
1 stop10h 30mMultiple Airlines
Mon 10/205:59 pmLGA - ORD
1 stop6h 40mMultiple Airlines
Deal found 9/13$116
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Thu 10/305:50 pmORD - JFK
1 stop5h 43mFrontier
Sun 11/211:00 amJFK - ORD
Nonstop2h 45mFrontier
Deal found 9/14$116
This Booking.com deal was found by Cheapflights users on 9/13. 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.
Fri 10/246:40 amORD - JFK
Nonstop2h 23mFrontier
Sun 10/266:59 amJFK - ORD
1 stop25h 11mFrontier
Deal found 9/13$117

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 September 15, 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

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Tue 9/30

7:40 pm-10:43 pm

Nonstop2h 03m

Washington, D.C. Reagan-National

Sun 10/5

7:25 am-8:39 am

Nonstop2h 14m

$133

ChicagoNew York

ORD - JFK

ORDJFK

Chicago O'Hare Intl

Wed 11/19

6:44 am-9:59 am

Nonstop2h 15m

New York John F Kennedy Intl

Tue 12/2

8:00 pm-9:48 pm

Nonstop2h 48m

$133

ChicagoNew York

MDW - LGA

MDWLGA

Chicago Midway

Tue 11/11

10:00 am-5:05 pm

2 stops6h 05m

New York LaGuardia

Wed 11/12

6:00 am-7:30 am

Nonstop2h 30m

$134

ChicagoNew York

ORD - LGA

ORDLGA

Chicago O'Hare Intl

Wed 11/12

10:49 am-11:25 pm

1 stop11h 36m

New York LaGuardia

Sat 11/15

1:24 pm-2:56 pm

Nonstop2h 32m

$139

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Wed 10/29

9:15 am-3:32 pm

1 stop5h 17m

Washington, D.C. Reagan-National

Sat 11/1

6:30 am-7:45 am

Nonstop2h 15m

$143

ChicagoNew York

ORD - JFK

ORDJFK

Chicago O'Hare Intl

Mon 2/9

9:00 am-12:17 pm

Nonstop2h 17m

New York John F Kennedy Intl

Fri 2/13

7:40 pm-9:33 pm

Nonstop2h 53m

$143

ChicagoNew York

ORD - LGA

ORDLGA

Chicago O'Hare Intl

Sun 12/7

7:05 pm-10:14 pm

Nonstop2h 09m

New York LaGuardia

Mon 12/8

5:45 am-7:13 am

Nonstop2h 28m

$146

ChicagoNew York

MDW - JFK

MDWJFK

Chicago Midway

Thu 11/6

1:37 pm-12:33 am

1 stop9h 56m

New York John F Kennedy Intl

Sat 11/8

10:00 am-6:39 pm

1 stop9h 39m

$147

ChicagoNew York

MDW - LGA

MDWLGA

Chicago Midway

Tue 10/28

4:10 pm-10:30 pm

1 stop5h 20m

New York LaGuardia

Tue 11/4

4:45 pm-6:15 pm

Nonstop2h 30m

$147

ChicagoNew York

MDW - JFK

MDWJFK

Chicago Midway

Wed 10/29

2:06 pm-12:33 am

1 stop9h 27m

New York John F Kennedy Intl

Wed 11/5

6:20 am-12:41 pm

1 stop7h 21m

$147

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

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 September 15, 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 September 15, 2025.

The most flights from USIL to USPA are scheduled on a Monday (51 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (41 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 September 15, 2025.
Read through reviews of airlines operating flights from Illinois to Pennsylvania, such as Southwest, United Airlines, and American 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
4,242 reviews

Entertainment

7.5

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,929 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,015 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,172 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

  • How long is the flight from Illinois to Pennsylvania?

    Departing from Illinois to Pennsylvania will take you 2h 03m. The distance from Illinois to Pennsylvania is about 610 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $70. However, be on the lookout for offers from Frontier and Spirit Airlines, 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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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$63Average$260FlexibilityNo cancel feeOn-time65%
FrontierCheapest$64Average$165FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$103Average$345FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$107Average$394FlexibilityNo cancel feeOn-time71%
DeltaCheapest$108Average$477FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$127Average$414FlexibilityNo cancel feeOn-time69%

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