$42 Find Cheap Flights from Illinois to Pennsylvania

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Low seasonJanuary
High seasonOctober
Cheapest flight$42
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Chicago O'Hare Airport to New York LaGuardia Airport

FAQs for booking flights from Illinois to Pennsylvania

  • How does KAYAK find such low prices on flights from Illinois to Pennsylvania?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Pennsylvania.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Pennsylvania?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to Pennsylvania is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Pennsylvania?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Illinois to Pennsylvania with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Pennsylvania?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Illinois to Pennsylvania up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in Pennsylvania?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Pennsylvania is Philadelphia Airport (PHL), with an average flight price of $173.

  • What is the cheapest day to fly to Pennsylvania?

    Based on KAYAK data, the cheapest day to fly to Pennsylvania is Thursday where round-trip tickets can be as cheap as $271. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $446 on average.

  • What is the cheapest time of day to fly to Pennsylvania?

    The cheapest time of day to fly to Pennsylvania is generally at night, when round-trip flights cost $229 on average. Morning departures are around 49% cheaper than evening flights, on average. The most expensive time of day to fly to Pennsylvania is generally in the evening, which is peak travel time and where the average cost of a ticket is $532.

  • What is the cheapest flight to Pennsylvania?

    The cheapest ticket to Pennsylvania from Illinois found in the last 72 hours was to Pittsburgh, at $94 round-trip. The most popular route is Chicago Midway Airport (MDW) to Philadelphia (PHL) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $98.

  • What is the cheapest month to fly from Illinois to Pennsylvania?

    The cheapest month for flights from Illinois to Pennsylvania is September, when tickets cost $234 (return) on average. On the other hand, the most expensive months are February and January, when the average cost of round-trip tickets is $416 and $377 respectively.

  • How far in advance should I book a flight from Illinois to Pennsylvania?

    To get a below average price on the flight from Illinois to Pennsylvania, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

  • How long is the flight to Pennsylvania?

    An average nonstop flight from Illinois to Pennsylvania takes 3h 26m, covering a distance of 704 miles. The shortest route is Chicago Midway Airport (MDW) to Pittsburgh (PIT) with an average flight time of 1h 20m.

  • What are the most popular destinations in Pennsylvania?

    Based on KAYAK flight searches, the most popular destination is New York (79% of total searches to Pennsylvania). The next most popular destinations are Washington, D.C. (11%) and Philadelphia (7%). Searches for flights to Pittsburgh (2%), to Allentown (1%) and to Harrisburg (0%) are also popular.

Reviews of the top 5 airlines serving from Illinois to Pennsylvania

 
Need help choosing which airline to fly with from Illinois to Pennsylvania? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4242 reviews
8.0Comfort
8.1Boarding
7.0Food
8.6Crew
7.6Entertainment
Airline reviews

The Southwest employees (all two of them) were very nice and cheerful despite the fact the line to self-check a bag (simply drop it off) was hundreds of people long. Thank God I arrived early to the airport because I stood in this line for at least an hour. Once on the flight that had been delayed by an hour, we had no Wi-Fi and thus no entertainment. Finally, I hope the investor strong arm tactics against Southwest pay off in a short-term windfall to your C-Suite because the rest of you are screwed. I have been a faithful Southwest customer for 15 years due to everything you just got rid of. I'm flying to Idaho and Washington in October, both places I used to simply book with Southwest without a second thought now with Frontier (Washington) and United (Idaho) because they offer everything the "new" Southwest does but cheaper and at better times, destinations, etc. This really makes me sad...

4.0 OkayGreg, Jul 2025PDX - DEN
Read more Southwest reviews

The Southwest employees (all two of them) were very nice and cheerful despite the fact the line to self-check a bag (simply drop it off) was hundreds of people long. Thank God I arrived early to the airport because I stood in this line for at least an hour. Once on the flight that had been delayed by an hour, we had no Wi-Fi and thus no entertainment. Finally, I hope the investor strong arm tactics against Southwest pay off in a short-term windfall to your C-Suite because the rest of you are screwed. I have been a faithful Southwest customer for 15 years due to everything you just got rid of. I'm flying to Idaho and Washington in October, both places I used to simply book with Southwest without a second thought now with Frontier (Washington) and United (Idaho) because they offer everything the "new" Southwest does but cheaper and at better times, destinations, etc. This really makes me sad...

It was okay. The plane was delayed from earlier in the day, but they kept updating the departure time, sometimes later, sometimes earlier. That was stressful. Once we finally got on and took off, it was fine. I was supposed to have a connection in Chicago to Los Angeles, and the time for so late I was rebooked to arrive in LA 3 hours late. The departure time to Chicago later became early enough to have taken my original connection and arrive earlier but that wasn't an option.

It was one and half hour late... Not sure if any other experience matters.

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

For my birthday trip this was my second time ever flying, this trip was the best.

after landing, we stay 2 hours on the taxi way before reaching the gate The airline and the crew were good though

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

Flight wasn’t even full, but too many carry-ons caused us to run out of bin space. New bag fee has folks who would usually check their bags carrying on. Watching Southwest morph into Spirit/Frontier is so sad to watch

Sat on tarmac for 2 hours and then missed my connecting flight

First time traveling on Southwest since bag fees were implemented. Usual good service. Just more expensive now.

It was delayed instead of departing at 9:20pm, we departed at 11pm… putting us in Columbus after 2am! It was awful. Had I known about the delay, I could have spent some time in the United Lounge… I was starving because I started my journey in Budapest… so I was exhausted and hungry. Plus I had to make new arrangements to be picked up at the airport in Columbus, instead of midnight it was 2:30 am after getting luggage and out of airport. Not feasible. I would have just stayed in Chicago for the night and gotten a morning flight.

It was great, I’m very grateful for the pilots and crew flight attendants for everything.

Evidently, my seat had the only broken TV. I couldn’t plug it in, get it to come on, or watch anything, and of course, no one could fix it while we were on the plane. The service was good and the boarding was quick

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

I was charged for my daughters bag when I am supposed to receive two free checked bags with my United Explorer card.

The schedule to Moline changed 5 times. The gate changed 6 times. That is a pathetic way to run an airline. No wonder that no one in our company flies on United Express to or from Moline. Changes happen most of the time. I learned my lesson on this trip…never again!

Flight was great. Efficient boarding. Short flight. Early arrival. Friendly flight crew. The entertainment system did not work well. Could not access it until the aircraft reached 10K feet or more. Lots of glitches.

A bit rush for transit. Food and entertainment are not available

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

My flight was scheduled for about 6:05 departure. There were 11 gate changes from 4-7pm and the flight was 3 hours delayed due to operational issues. The plane taxied around the airport for about half an hour before stopping to be de-iced. It would have been nice if we were alerted of the plan to de-ice prior to the 30 minute drive around the airport. The flight attendant was friendly, which was the only redeeming thing about this flight. As a former flight attendant for United, I was extremely disappointed.

The flight had a delay that made me being in a real rush to take the second flight. The delay was almost for 2 hours. They moved us from gate to gate in 4 times. Once I arrived to Philadelphia, I got to run thorough all the airport, as the train was already closed by that time. So I got sick with asthma for all the running I had to do. And I was the last one to board, when it was almost closed. So irresponsable with the people

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Overall, a good experience. The food, however, was subpar. The breakfast was a joke.

I was late from Jacksonville, FL but the limited interaction I had with the Philly crew was great.

The delays and cancellations kept me stuck in Miami for an additional 24 hours, and the whole thing seemed extremely disorganized

Everything was great except British airways lost our luggage that was gate checked all the way through to Italy. No one knows currently where one is and the other one may be in route to Amsterdam to meet us but not sure. If you can Hale’s it would be awesome. The website is not helpful.

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

the pilot that landed this flight in Philadelphia did an amazing job, the weather was absolutely terrible and we landed safely.

It was very bad it got delayed by 2 hours.Never going to travel with spirit airlines in future.

We paid for upgrade seats (3A & 3B) the seats on front and the seats behind us got complimentary water & soda, but we got charged, had to pay for everything. Does not make any sense ?

The flight times got delayed multiple times due to weather which is understandable, but later the time got prepared 30min. Made to the flight barely but got stressed too much.

Spirit charges you to breathe in their presence. They have you pick and buy your seat in advance and then I got bumped from the seat I paid for because THEY overbooked the flight by a dozen people. they do not provide any entertainment, they do not provide even a small cup of water - you have to pay for everything. I will never fly Spirit again.

why's KAYAK involved? why'd Spirit charge me $19.72 on Apr 28 and $4.49 on May 1 ? And ironically my credit card had to be cancelled after trip due to a bogus charge, wonder if using it on the plane enabled a scammer to get it.

Worst airline ever! The guy weighing my bag had his foot on the metal plate and when I called him out on it, I got this stupid little smirk. La is a scam and so is Spirit Airlines. All the flight attendants looked like they hated our flight just as much as we did.

Spirit is awful. Too expensive for what you get. Stop nickel and diming.

Good crew and safe. However, comfort and being nickeled-and-dimed are my issues. $75 each way for luggage is exhortation. The space to the next seat is so close you cannot open a laptop. The magazine rack doesn’t hold your items. Not a fan.

WiFi could have been a little more consistent - otherwise a phenomenal and positive experience. The 1000 mile giveaway was awesome!!!

Your employees need to learn how to talk to people as creations of Yah. We are not their children nor are we lower than them.

Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck

Both legs of the flight were changed. The day of the flight and length of the trip.

First of all, we never got on the connecting flight to Denver. They delayed our flight for two hours. If we would have gotten on that flight, we would have been stuck in Denver for 13 hours. So we re- routed our flight for a straight through flight to Oklahoma two days later. THEN, they delayed that flight for two hours. After that we were able to finally get on our flight and come home. Frontier Airlines - one of the worst airlines I have ever been on.

Terrible communication with weather delay, lost baggage, near impossible to reach customer service

My tickets got canceled on me by your site and I didn't have a flight. Then you kept sending me emails on the status of q flight I didn't have tickets for.

The delay was ridiculous because nary a word escaped from the gate attendant regarding our flight status. It was a complete joke.

I missed a flight because of a delay. I had to buy a new ticket through Southwest.

The crew was mostly okay. The flight attendant who answered our questions was curt and unhelpful unfortunately. He seemed upset and I understand having off days.

Flight was delayed one hour. Notification to the crowd waiting near the gate was terrible…announcements were unclear and very hard to hear and therefore understand. Frontier does NOT send texts to notify, only email. The reader board over the gate itself was NEVER updated to indicate the gate had been changed. It’s like a bunch of children are running things.

I’m not gonna fly Frontier Airlines because booking is not an option. No water or food is for high price, not equipped for health emergency incompetent crew for emergency services. Cheap airline shows it is cheaper in all service categories. Boarding is the best of all airlines!

Book cheap flights from Illinois to Pennsylvania

Recent round-trip flight deals

9/4Thu
nonstopSpirit Airlines
2h 05mORD-LGA
9/6Sat
nonstopSpirit Airlines
2h 35mLGA-ORD
$88
9/4Thu
nonstopSpirit Airlines
2h 05mORD-LGA
9/9Tue
nonstopSpirit Airlines
2h 38mLGA-ORD
$89
10/17Fri
nonstopFrontier
2h 06mORD-PHL
10/20Mon
nonstopFrontier
2h 31mPHL-ORD
$106
9/4Thu
nonstopFrontier
2h 11mORD-PHL
9/8Mon
nonstopFrontier
2h 37mPHL-ORD
$108
8/16Sat
nonstopUnited Airlines
2h 07mORD-PHL
8/19Tue
nonstopUnited Airlines
2h 22mPHL-ORD
$141
8/20Wed
nonstopAmerican Airlines
2h 05mORD-PHL
8/20Wed
nonstopAmerican Airlines
2h 30mPHL-ORD
$146
9/13Sat
nonstopAmerican Airlines
2h 18mORD-EWR
9/16Tue
nonstopAmerican Airlines
2h 39mEWR-ORD
$147
9/17Wed
nonstopSouthwest
2h 10mMDW-LGA
9/20Sat
nonstopSouthwest
2h 20mLGA-MDW
$147
7/30Wed
nonstopSouthwest
2h 10mMDW-LGA
8/30Sat
nonstopSouthwest
2h 20mLGA-MDW
$152
8/7Thu
nonstopUnited Airlines
1h 58mORD-DCA
8/14Thu
nonstopUnited Airlines
2h 15mDCA-ORD
$157

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Recent one-way flight deals

7/30Wed
nonstopSpirit Airlines
2h 09mORD-LGA
$42
9/8Mon
nonstopSpirit Airlines
2h 05mORD-LGA
$43
10/16Thu
nonstopFrontier
2h 06mORD-PHL
$48
10/6Mon
nonstopFrontier
2h 06mORD-PHL
$54
9/3Wed
nonstopSouthwest
2h 15mMDW-LGA
$69
9/3Wed
nonstopAmerican Airlines
2h 18mORD-JFK
$70
8/13Wed
nonstopUnited Airlines
2h 12mORD-PHL
$71
10/15Wed
nonstopSouthwest
2h 05mMDW-LGA
$74
10/15Wed
nonstopAmerican Airlines
2h 22mORD-JFK
$75
8/13Wed
nonstopUnited Airlines
2h 11mORD-LGA
$79

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Last minute flights from Illinois to Pennsylvania

Last minute flight, train and bus deals

7/18Fri
nonstopFrontier
2h 26mORD-PHL
7/28Mon
nonstopFrontier
2h 39mPHL-ORD
$149
7/18Fri
nonstopFrontier
2h 26mORD-PHL
8/14Thu
nonstopFrontier
2h 35mPHL-ORD
$167
7/19Sat
nonstopSpirit Airlines
2h 09mORD-LGA
7/26Sat
multi-stopSpirit Airlines
8h 30mLGA-ORD
$233
7/19Sat
nonstopSpirit Airlines
2h 09mORD-LGA
7/26Sat
nonstopSpirit Airlines
2h 30mLGA-ORD
$238
7/19Sat
nonstopAmerican Airlines
2h 16mORD-EWR
7/26Sat
multi-stopAmerican Airlines
5h 35mEWR-ORD
$274
7/19Sat
nonstopAmerican Airlines
2h 24mORD-JFK
7/26Sat
multi-stopAmerican Airlines
5h 12mJFK-ORD
$274
7/19Sat
multi-stopSouthwest
4h 20mMDW-LGA
7/26Sat
nonstopSouthwest
2h 20mLGA-MDW
$274
7/19Sat
nonstopSouthwest
2h 05mMDW-LGA
7/26Sat
nonstopSouthwest
2h 20mLGA-MDW
$284
7/19Sat
nonstopUnited Airlines
2h 05mORD-IAD
7/19Sat
multi-stopUnited Airlines
17h 57mIAD-ORD
$419
7/19Sat
multi-stopUnited Airlines
5h 00mORD-DCA
7/26Sat
nonstopUnited Airlines
2h 16mDCA-ORD
$459

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Everything you need to know for your flight to Pennsylvania

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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