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Find cheap flights from Pittsburgh to Illinois from $45

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Pittsburgh to Illinois departing on 5/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 6/15
Sat 6/22

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Best Illinois Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Chicago
Chicagononstop$107
Moline
Moline1 stop$247
St. Louis
St. Louis1 stop$161

Good to know

Low season

January

High season

September

Cheapest flight

$45
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly and prices are also 10% lower on average.
Flight from Pittsburgh to Chicago O'Hare Airport

FAQs - booking Illinois flights

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

    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 Pittsburgh to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Illinois from Pittsburgh 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 Pittsburgh to Illinois?

    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 to Illinois with an airline and back to Pittsburgh with another airline.

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

    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 to Illinois from Pittsburgh up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Pittsburgh to the following destinations at these prices or less: Chicago $177 one-way - $363 round-trip
  • Morning departure is around 6% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Pittsburgh to Illinois

 
Need help choosing which airline to fly with from Pittsburgh to Illinois? 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
DeltaOverall score based on 10673 reviews
8.6Crew
7.4Food
8.2Boarding
7.9Comfort
8.0Entertainment
Airline reviews

5-hour delay due to storms in Tanoa and airspace restricted by Miami traffic controllers.

6.0 GoodGary, May 2024MSP - TPA
Read more about Delta reviews

5-hour delay due to storms in Tanoa and airspace restricted by Miami traffic controllers.

A regional sized plane was used for a cross country flight with no overhead bin space. I had to "pink check" my laptop and my medications. I was NOT pleased!!!!

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

Best airline! Always friendly and welcoming. Skyclub was great and loved the fast free wifi on board. I also love that you can pre-order your meal on the app!

Atlanta boarding crew at gate were filled with arrogance and were disrespectful. In flight crew showed indifference to the needs of passengers. This is about the flight from ATL to BDL.

Boarding was somewhat chaotic. Unable to evaluate crew or food/drink because captain kept them seated due to turbulence. Have no idea if entertainment was offered.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

Delayed departure. Delayed after landing pulling into gate. Delay due to sky bridge malfunction

Great. Loved that there was WiFi on flight to keep in touch and excellent service of beverages and snacks.

Business class is great. New airplane, very comfortable, better than some of the major airlines I am used to

Terrible. Flight was cancelled due to the weather in the east and sout east(florida). Did not get any compesation of any kind. According to them, it was not under their control so I lost all the money paid for the 2 fairs from Raleigh, NC to Orlando, Fl.

great flight. Pilot was communicative, flight attendants were excellent. Really nice experience except my tv didn’t work.

Overall, the flight was better than the flight I took to go to Florida, which had a bunch of problems. The crew is really nice and the plane was new so it had a small problem when we were on the runway, but the flight itself was great. They even made some time back up, which is always a good thing.

There were multiple delays but JetBlue tried to make the boarding and departure process as quick and efficient as possible. The crew was as detached from reality as could be, meaning: not very friendly and just doing things by the numbers.

I had back trouble prior to my flight and everyone was great about helping me.

40 minute delay before take off after boarding flight. Bright lights throughout night flight due Issues with light panels. In flight Entertainment nonfunctional

Everything was good except for deplaning in NY. Took way too long!!

Crew were fine, drinks and snacks were as well but we were delayed for around 2 hrs which made our entry into Mexico delayed as well with the influx of arrivals at the same time. Sort of wasted our first day of vacation. We left Pittsburgh at 630am and did not arrive in Mexico until late dinner time.

I was told we'd have a hot breakfast option in first class, so I chose not get a hot breakfast. It was a very strange meal, but the fresh fruit was very good quality. Service was excellent from ORD to ELP. No service from MBS to ORD, not even water. However, when flying American from FNT to ORD, which is a shorter flight, they at least pass out snacks and offer water.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

The flight was delayed instead of leaving at 11 it left at 12.20

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Good movies, iffy pay WiFi, food ok- on time though and that was great!

Awful…flight was delayed more than 12hrs, missed all connections to Fort Wayne, IN, had to get flight to another city 2 hours from my destination, flight was again delayed by 40 mins because they did not have enough fuel, again missed a connection, finally arrived in Indiana at 11pm…but before my 2 hour drive home, ay, no Five That Our Luggage Never Made On The plane and Still In Chicago

Boarding was friendly and quick. While the plane model was older with no live tv, the entertainment was full of movies and tv shows. All food was available. Pilots were very communicative with status of the flight. Flight landed on time.

Flight was delayed by over an hour and gate checked bags took 15 minutes to be delivered to the jet bridge.

The Palm Springs to Chicago O’Hare was on Time and Palm Springs airport is easier navigate. As our connection was only an approximately 50 minutes, we asked staff for insights for the Chicago airport in terms of transferring into the other terminal from which our flight left, and they were unhelpful. However, the United App was very helpful in terms of notifications and even providing directions. The Chicago to Detroit flight was significantly delayed which we all know does happen. However, there were very few updates or notifications as to why this was happening when we would actually arrive. It took nearly 30 minutes for bags to make it to baggage claim. We arrived nearly 1 hour late on a 40 minute flight.

The CX617 from HK to BKK was delayed more than 1.5 hours.

This flight is frequently delayed. The connections seemingly are more frequently delayed. I’ve missed connections as a result twice on the same route to charlotte then Charleston. Final destination arrival has been the next day, twice in a row. No pilots, no crew. Too many excuses. Unfortunately, my days with American are over.

Entertainment was okay not because anything was wrong but it is a short flight so having no wifi is annoying but understandable. Crew was outstanding as usual

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

Flight was fine. It took an unusually long time to have baggage delivered to the carousel in ORD.

Average - flew with Jet Blue internal and it was far more comfortable and better food and entertainment. Notable difference

It was a good flight. Of course it was full, but it went well.

The flight got canceled due to mechanical issues, and he to be rebooked and missed my appointments for that day

The flight was scheduled to depart DCA at 12:30 pm but was delayed twice on the ground so that we were finally scheduled to depart at around 4:00 pm. Once we boarded, it was announced that takeoff would be delayed again to fix a hydraulic problem which delayed our eventual takeoff until around 5:00 pm. Once we departed, it was a smooth flight back to ORD. We did not get any explanation about what caused the original significant delay. In my experience, this happens frequently with AA.

The only problem experienced was a ground stop in Chicago due to weather. But the crew handled everything professionally. They prioritized rebooking those passengers who had connecting flights and then deplaning the other passengers. When the hold was lifted, they efficiently re-boarded all the passengers so that we could depart before our departure limit expired.

Crew was nice, explained emergency protocol very well. Flight took off and arrived on time. Pilot explained the small delay that occurred with docking and providing updates. I would definitely fly spirit again.

Terrible… missed our flight due to ridiculously long time to go thru baggage check-in!

The seat are terrible. Don’t even think of sleeping on a Spirit flight. The kids that run the plane aka flight attendants are pretty rude and straight forward. They get the job done but without class.

I had a death in my family and booked my flight on Spirit. My flight was cancelled the morning of my flight, no explanation, no help to rebook, nobody to talk to. The next available flight was 2days later !!!! Terrible airline, will NEVER fly with them again!

They took a horrible route with a lot of turbulence and I eneded up getting sick. Even if the flight takes longer. Don't put people life at risk just to get to the airport on time.

Every thing was fine ,low price,easy on time ,clean, good staff, really no issues

The crew was great but it felt gross how spirit charges you for every little thing. Picking your seat should be free (first come first served). Beverages and food I get. But picking where I sit? Gross.

Had to board plan 2x due to lack of security check after 1st boarding

Miserable. The crew was rude, the flight was delayed 5 hours for mechanical reasons and then “weather” even though other planes were leaving.

They kept Changing the flight times. It was delayed several times and at one point it was supposed to depart at 3.40am! At which point we ended up staying overnight and booked long a separate United flight for early morning departure. The spirit flight then got moved up and left at 1.30 in the morning when it was supposed to leave at 9.40pm the night before.

Book cheap flights from Pittsburgh to Illinois

Recent round-trip flight deals

7/3Wed
nonstopAmerican Airlines
1h 41mPIT-ORD
7/10Wed
nonstopAmerican Airlines
1h 34mORD-PIT
$107
8/14Wed
1 stopFrontier
19h 18mPIT-ORD
8/17Sat
1 stopFrontier
7h 58mORD-PIT
$108
9/11Wed
1 stopSpirit Airlines
11h 03mPIT-ORD
9/14Sat
1 stopSpirit Airlines
13h 13mORD-PIT
$111
9/17Tue
1 stopSpirit Airlines
12h 08mPIT-ORD
9/24Tue
1 stopSpirit Airlines
9h 52mORD-PIT
$112
6/17Mon
nonstopUnited Airlines
1h 42mPIT-ORD
6/25Tue
nonstopUnited Airlines
1h 39mORD-PIT
$127
6/6Thu
nonstopUnited Airlines
1h 46mPIT-ORD
6/7Fri
nonstopUnited Airlines
1h 36mORD-PIT
$137
8/13Tue
1 stopDelta
6h 49mPIT-ORD
8/17Sat
1 stopDelta
4h 57mORD-PIT
$156
6/6Thu
1 stopDelta
4h 01mPIT-MDW
6/7Fri
1 stopDelta
2h 55mMDW-PIT
$197
11/5Tue
2 stopsAlaska Airlines
26h 43mPIT-STL
11/9Sat
2 stopsAlaska Airlines
25h 43mSTL-PIT
$743
6/20Thu
2 stopsAlaska Airlines
15h 38mPIT-STL
6/25Tue
2 stopsAlaska Airlines
26h 55mSTL-PIT
$922

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Recent one-way flight deals

5/22Wed
1 stopSpirit Airlines
10h 58mPIT-ORD
$45
7/1Mon
nonstopUnited Airlines
1h 40mPIT-ORD
$49
6/15Sat
1 stopFrontier
6h 03mPIT-ORD
$50
6/15Sat
1 stopFrontier
6h 03mPIT-ORD
$54
6/18Tue
1 stopSpirit Airlines
10h 48mPIT-ORD
$56
8/14Wed
nonstopAmerican Airlines
1h 39mPIT-ORD
$59
8/17Sat
nonstopAmerican Airlines
1h 38mPIT-ORD
$69
5/30Thu
1 stopDelta
5h 50mPIT-MDW
$78
7/1Mon
1 stopDelta
4h 06mPIT-ORD
$78
5/30Thu
nonstopUnited Airlines
1h 39mPIT-ORD
$79

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Last minute flights from Pittsburgh to Illinois

Last minute flight, train and bus deals

5/19Sun
multi-stopFrontier
13h 38mPIT-STL
5/22Wed
multi-stopFrontier
8h 39mSTL-PIT
$141
5/21Tue
multi-stopFrontier
12h 53mPIT-STL
5/22Wed
multi-stopFrontier
22h 56mSTL-PIT
$217
5/21Tue
multi-stopSpirit Airlines
17h 22mPIT-ORD
5/28Tue
multi-stopSpirit Airlines
23h 01mORD-PIT
$280
5/21Tue
multi-stopSpirit Airlines
35h 07mPIT-ORD
5/24Fri
multi-stopSpirit Airlines
24h 12mORD-PIT
$344
5/18Sat
nonstopUnited Airlines
1h 38mPIT-ORD
5/18Sat
nonstopUnited Airlines
1h 35mORD-PIT
$432
5/21Tue
nonstopAmerican Airlines
1h 38mPIT-ORD
5/23Thu
nonstopAmerican Airlines
1h 25mORD-PIT
$436
5/18Sat
nonstopUnited Airlines
1h 40mPIT-ORD
5/21Tue
nonstopUnited Airlines
1h 29mORD-PIT
$437
5/21Tue
nonstopAmerican Airlines
1h 44mPIT-ORD
5/23Thu
multi-stopAmerican Airlines
4h 03mORD-PIT
$444
5/18Sat
multi-stopDelta
3h 46mPIT-MDW
5/21Tue
multi-stopDelta
3h 09mMDW-PIT
$456
5/18Sat
multi-stopDelta
5h 24mPIT-ORD
5/21Tue
multi-stopDelta
4h 45mORD-PIT
$456

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Pittsburgh - Illinois Flights

Departure:

Pittsburgh (PIT)United States

Return flight deals:

Illinois - Pittsburgh

Cabin classes:

$663
$1,102
$497
$225