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$64+ Cheap flights from Pennsylvania to Illinois

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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ORD
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap flight deals from Pennsylvania to Illinois

Keep the following information in mind while searching for Pennsylvania to Illinois flight deals. Data was last updated July 3, 2025.

Round-trip from

$132
(Priceline)

One-way from

$64
(FlightHub)

Popular in

March

Cheapest in

September

Average price

$189

Good round-trip deal

$190 or less

Good one-way deal

$104 or less
From Pennsylvania to Illinois
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One-way flight from Pennsylvania to Illinois
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Highest demand for flights based on searches. 24% potential increase in price ($73 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 July 2025
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Price to beat on a round-trip flight from Pennsylvania to Illinois.
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Price to beat on a one-way flight from Pennsylvania to Illinois.
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Find flight deals from Pennsylvania to Illinois

Cheapest flights from Pennsylvania to Illinois
Explore the most affordable flight options available from Pennsylvania to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This FlightHub deal was found by Cheapflights users on 7/3. 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 10/169:33 pmEWR - ORD
Nonstop2h 37mSpirit Airlines
Sun 10/195:10 pmORD - EWR
Nonstop2h 18mSpirit Airlines
Deal found 7/3$130
This Priceline deal was found by Cheapflights users on 7/2. 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.
Tue 7/2911:04 amEWR - ORD
1 stop6h 34mMultiple Airlines
Mon 8/44:37 pmORD - EWR
1 stop6h 35mMultiple Airlines
Deal found 7/2$132
This Priceline deal was found by Cheapflights users on 7/2. 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.
Tue 10/1412:59 pmJFK - ORD
1 stop8h 10mFrontier
Sun 10/195:10 amORD - JFK
1 stop5h 49mFrontier
Deal found 7/2$136
This JetBlue deal was found by Cheapflights users on 7/1. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/309:29 amJFK - ORD
Nonstop2h 49mJetBlue
Tue 9/211:35 amORD - JFK
Nonstop2h 23mJetBlue
Deal found 7/1$137
This Kiwi.com deal was found by Cheapflights users on 7/1. 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.
Mon 9/153:13 pmLGA - ORD
Nonstop2h 38mSpirit Airlines
Fri 9/2611:13 amORD - LGA
Nonstop2h 05mSpirit Airlines
Deal found 7/1$137
This Southwest deal was found by Cheapflights users on 7/2. 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.
Sat 8/307:30 amLGA - MDW
Nonstop2h 20mSouthwest
Wed 9/35:55 pmMDW - LGA
Nonstop2h 15mSouthwest
Deal found 7/2$137
This Priceline deal was found by Cheapflights users on 7/2. 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.
Sat 8/235:55 amEWR - ORD
1 stop6h 41mFrontier
Wed 8/272:40 pmORD - EWR
1 stop8h 33mFrontier
Deal found 7/2$139
This Priceline deal was found by Cheapflights users on 7/1. 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 7/236:30 amLGA - ORD
1 stop10h 34mMultiple Airlines
Tue 7/298:09 amORD - LGA
1 stop8h 21mMultiple Airlines
Deal found 7/1$139
This Priceline deal was found by Cheapflights users on 7/3. 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.
Fri 9/1911:15 amEWR - MDW
1 stop5h 43mFrontier
Mon 9/225:04 pmMDW - EWR
1 stop6h 30mFrontier
Deal found 7/3$141
This Priceline deal was found by Cheapflights users on 6/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/96:30 amLGA - MDW
1 stop10h 28mFrontier
Sat 9/1311:23 amMDW - LGA
1 stop7h 39mFrontier
Deal found 6/30$144
This Priceline deal was found by Cheapflights users on 7/2. 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.
Fri 10/249:00 amJFK - MDW
1 stop10h 18mFrontier
Sun 10/2610:03 pmMDW - JFK
1 stop11h 22mFrontier
Deal found 7/2$146
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Wed 9/38:15 pmEWR - ORD
Nonstop2h 41mUnited Airlines
Sat 9/610:35 amORD - EWR
Nonstop2h 17mUnited Airlines
Deal found 7/2$147

Cheapflights Fare Finder

Customize your flight search to find flights from Pennsylvania to Illinois 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 July 3, 2025.
Use the filters below to find and compare flights from Pennsylvania to Illinois that are best for you.

Fly from

Pennsylvania

Fly to

Illinois

Route

Depart

Return

Price

NewarkChicago

EWR - ORD

EWRORD

Newark

Thu 10/16

9:33 pm-11:10 pm

Nonstop2h 37m

Chicago O'Hare Intl

Sun 10/19

5:10 pm-8:28 pm

Nonstop2h 18m

$130

NewarkChicago

EWR - ORD

EWRORD

Newark

Tue 7/29

11:04 am-4:38 pm

1 stop6h 34m

Chicago O'Hare Intl

Mon 8/4

4:37 pm-12:12 am

1 stop6h 35m

$132

New YorkChicago

JFK - ORD

JFKORD

New York John F Kennedy Intl

Sat 8/30

9:29 am-11:18 am

Nonstop2h 49m

Chicago O'Hare Intl

Tue 9/2

11:35 am-2:58 pm

Nonstop2h 23m

$137

New YorkChicago

LGA - MDW

LGAMDW

New York LaGuardia

Sat 8/30

7:30 am-8:50 am

Nonstop2h 20m

Chicago Midway

Tue 9/2

6:00 am-9:00 am

Nonstop2h 00m

$137

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Mon 9/15

3:13 pm-4:51 pm

Nonstop2h 38m

Chicago O'Hare Intl

Fri 9/26

11:13 am-2:18 pm

Nonstop2h 05m

$137

New YorkChicago

JFK - ORD

JFKORD

New York John F Kennedy Intl

Thu 7/31

6:59 am-3:27 pm

1 stop9h 28m

Chicago O'Hare Intl

Sat 8/2

5:07 pm-12:42 am

1 stop6h 35m

$138

NewarkChicago

EWR - ORD

EWRORD

Newark

Sat 8/23

5:55 am-11:36 am

1 stop6h 41m

Chicago O'Hare Intl

Wed 8/27

2:40 pm-12:13 am

1 stop8h 33m

$139

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Wed 7/23

6:30 am-4:04 pm

1 stop10h 34m

Chicago O'Hare Intl

Tue 7/29

8:09 am-5:30 pm

1 stop8h 21m

$139

NewarkChicago

EWR - MDW

EWRMDW

Newark

Fri 9/19

11:15 am-3:58 pm

1 stop5h 43m

Chicago Midway

Mon 9/22

5:04 pm-12:34 am

1 stop6h 30m

$141

New YorkChicago

LGA - MDW

LGAMDW

New York LaGuardia

Tue 9/9

6:30 am-3:58 pm

1 stop10h 28m

Chicago Midway

Sat 9/13

11:23 am-8:02 pm

1 stop7h 39m

$144

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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

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

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

Currently, August is the cheapest month in which you can book a flight from Pennsylvania to Illinois (average of $245). Flying from Pennsylvania to Illinois in March is currently the most expensive (average of $321). 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 IL?

Find hourly flight availability from Pennsylvania to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2025.

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

Weekly flight availability from Pennsylvania to Illinois

Explore weekly flight availability from Pennsylvania to Illinois. 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 July 3, 2025.

The most flights from USPA to USIL are scheduled on a Thursday (48 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (6 on average).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated July 3, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Pennsylvania to Illinois by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,270 reviews

Crew

8.6

Food

7.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,270 reviews
Southwest
8.0
Very good
4,270 reviews

Crew

8.6

Food

7.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,970 reviews
Southwest
8.0
Very good
4,270 reviews

Crew

8.6

Food

7.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,845 reviews
Southwest
8.0
Very good
4,270 reviews

Crew

8.6

Food

7.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
JetBlue
7.3
Good
2,916 reviews
Southwest
8.0
Very good
4,270 reviews

Crew

8.6

Food

7.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,270 reviews

Crew

8.6

Food

7.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

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

    The cheapest airlines for a one-way flight from Pennsylvania to Illinois are Spirit Airlines ($64), Frontier ($66), and United Airlines ($74).

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Pennsylvania to Illinois (average of $245). Flying from Pennsylvania to Illinois in March is currently the most expensive (average of $321). 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 Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to LaGuardia flights
Los Angeles to John F Kennedy Intl flights
Dallas/Fort Worth to Seattle flights
Los Angeles to Seattle flights
John F Kennedy Intl to Los Angeles flights
Los Angeles to Newark flights
John F Kennedy Intl to Las Vegas flights
LaGuardia to Dallas/Fort Worth flights
John F Kennedy Intl to Miami flights
Dallas/Fort Worth to John F Kennedy Intl flights
Newark to Los Angeles flights
John F Kennedy Intl to O'Hare Intl flights
Dallas/Fort Worth to O'Hare Intl flights
Los Angeles to Honolulu flights
LaGuardia to Fort Lauderdale flights
Dallas/Fort Worth to Los Angeles flights
Newark to Fort Lauderdale flights
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Los Angeles to Dallas/Fort Worth flights
Los Angeles to San Francisco flights
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Newark to O'Hare Intl flights
Dallas/Fort Worth to Las Vegas flights
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John F Kennedy Intl to Seattle flights
San Francisco to Las Vegas flights
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O'Hare Intl to LaGuardia flights
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John F Kennedy Intl to Dallas/Fort Worth flights
Newark to Seattle flights
John F Kennedy Intl to San Francisco flights
San Francisco to Los Angeles flights
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Seattle to Dallas/Fort Worth flights
O'Hare Intl to John F Kennedy Intl flights
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Seattle to Los Angeles flights
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O'Hare Intl to Las Vegas flights
Dallas/Fort Worth to Orlando flights
John F Kennedy Intl to Fort Lauderdale flights
Los Angeles to O'Hare Intl flights
Newark to Orlando flights
O'Hare Intl to Dallas/Fort Worth flights
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Dallas/Fort Worth to Denver flights

Top 5 airlines flying from Pennsylvania to Illinois

Discover the top 5 airlines that operate flights from Pennsylvania to Illinois. 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$50Average$138FlexibilityNo cancel feeOn-time62%
DeltaCheapest$118Average$346FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$119Average$407FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$126Average$310FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$138Average$400FlexibilityNo cancel feeOn-time69%

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