Find flights
Deals
When to book
FAQs & Tips
Airlines

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 5/15. 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
Thu 6/6
Thu 6/13

Search hundreds of travel sites at once for deals on flights to Illinois

In the last 7 days travelers have searched 43,707,506 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Best Illinois Flight Deals

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

Chicago
Chicagononstop$97
Moline
Moline1 stop$230
St. Louis
St. Louis1 stop$151

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 $172 one-way - $375 round-trip
  • Morning departure is around 27% more expensive 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 10810 reviews
7.4Food
8.6Crew
8.0Entertainment
7.9Comfort
8.2Boarding
Airline reviews

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.

2.0 MediocreAnonymous, May 2024AVL - LGA
Read more about Delta reviews

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.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

The pilots were good. Disappointing when planes don't have electrical ports

I liked the piloting of the aircraft. Very disappointed about lack of electrical ports. Also, although a short flight. there was enough time to hand out snacks to comfort + seats as was done for first class.

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!!

Jet Blue keeps getting iit wrong. 4 hour mechanical delay followed by terrible boarding experience. This is my third horrific jet blue flight in 2024. I am going to try to avoid this loser in the sky

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

6/11Tue
nonstopAmerican Airlines
1h 41mPIT-ORD
6/18Tue
nonstopAmerican Airlines
1h 25mORD-PIT
$97
5/21Tue
1 stopFrontier
8h 52mPIT-MDW
5/22Wed
1 stopFrontier
8h 29mMDW-PIT
$98
6/4Tue
1 stopSpirit Airlines
8h 22mPIT-ORD
6/11Tue
1 stopSpirit Airlines
13h 32mORD-PIT
$108
5/21Tue
1 stopSpirit Airlines
8h 22mPIT-ORD
5/22Wed
1 stopSpirit Airlines
6h 43mORD-PIT
$112
8/16Fri
nonstopUnited Airlines
1h 39mPIT-ORD
8/19Mon
nonstopUnited Airlines
1h 36mORD-PIT
$117
10/11Fri
nonstopUnited Airlines
1h 43mPIT-ORD
10/15Tue
nonstopUnited Airlines
1h 36mORD-PIT
$126
7/17Wed
1 stopDelta
3h 40mPIT-MDW
7/24Wed
1 stopDelta
4h 04mMDW-PIT
$156
7/23Tue
1 stopDelta
7h 25mPIT-ORD
8/6Tue
1 stopDelta
4h 50mORD-PIT
$156
9/27Fri
1 stopAlaska Airlines
17h 59mPIT-STL
9/29Sun
2 stopsAlaska Airlines
21h 37mSTL-PIT
$968
9/27Fri
2 stopsAlaska Airlines
26h 27mPIT-STL
9/29Sun
2 stopsAlaska Airlines
26h 34mSTL-PIT
$969

Search by stops

Search by airline

Search by price

Recent one-way flight deals

5/15Wed
1 stopSpirit Airlines
10h 58mPIT-ORD
$45
7/4Thu
nonstopAmerican Airlines
1h 40mPIT-ORD
$49
6/5Wed
1 stopFrontier
6h 21mPIT-MDW
$50
6/5Wed
1 stopSpirit Airlines
16h 01mPIT-ORD
$54
6/5Wed
1 stopFrontier
6h 21mPIT-MDW
$55
8/17Sat
nonstopAmerican Airlines
1h 41mPIT-ORD
$59
6/25Tue
1 stopDelta
6h 10mPIT-MDW
$78
5/26Sun
1 stopDelta
6h 49mPIT-ORD
$78
5/26Sun
nonstopUnited Airlines
1h 46mPIT-ORD
$79
10/18Fri
nonstopUnited Airlines
1h 43mPIT-ORD
$89

Search by stops

Search by airline

Search by price

Last minute flights from Pittsburgh to Illinois

Last minute flight, train and bus deals

5/12Sun
multi-stopFrontier
24h 02mPIT-MDW
5/16Thu
multi-stopFrontier
13h 59mMDW-PIT
$163
5/12Sun
multi-stopFrontier
13h 20mPIT-ORD
5/16Thu
multi-stopFrontier
11h 00mORD-PIT
$167
5/9Thu
multi-stopSpirit Airlines
25h 18mPIT-ORD
5/14Tue
multi-stopSpirit Airlines
16h 31mORD-PIT
$273
5/9Thu
multi-stopSpirit Airlines
25h 18mPIT-ORD
5/14Tue
multi-stopSpirit Airlines
27h 30mORD-PIT
$277
5/11Sat
multi-stopUnited Airlines
4h 17mPIT-MLI
5/14Tue
multi-stopUnited Airlines
4h 55mMLI-PIT
$366
5/8Wed
nonstopUnited Airlines
1h 38mPIT-ORD
5/14Tue
nonstopUnited Airlines
1h 39mORD-PIT
$437
5/8Wed
nonstopAmerican Airlines
1h 38mPIT-ORD
5/14Tue
multi-stopAmerican Airlines
5h 22mORD-PIT
$445
5/11Sat
multi-stopDelta
5h 37mPIT-MDW
5/15Wed
multi-stopDelta
5h 03mMDW-PIT
$456
5/8Wed
nonstopAmerican Airlines
1h 38mPIT-ORD
5/10Fri
multi-stopAmerican Airlines
4h 36mORD-PIT
$460
5/11Sat
multi-stopDelta
6h 22mPIT-MDW
5/12Sun
multi-stopDelta
3h 09mMDW-PIT
$471

Search by stops

Search by airline

Search by price

Pittsburgh - Illinois Flights

Departure:

Pittsburgh (PIT)United States

Return flight deals:

Illinois - Pittsburgh

Cabin classes:

$586
$1,108
$428
$223