HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$72+ Cheap flights from Pittsburgh (PIT) 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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
PIT — ORD
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Pittsburgh to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Pittsburgh to Illinois

Keep the following information in mind while searching for Pittsburgh to Illinois flight deals. Data was last updated May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$170
(Mytrip)

One-way from

$72
(Mytrip)

Popular in

January

Cheapest in

August

Average price

$284

Good round-trip deal

$325 or less

Good one-way deal

$162 or less
Provider with most accurate pricing for Pittsburgh-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Pittsburgh-Chicago (CHI) flights.
Search Deals
From Pittsburgh to Illinois
Search Deals
One-way flight from Pittsburgh to Illinois
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
Search Deals
Price to beat on a round-trip flight from Pittsburgh to Illinois.
Search Deals
Price to beat on a one-way flight from Pittsburgh to Illinois.
Search Deals

Find flight deals from Pittsburgh to Illinois

Cheapest flights from Pittsburgh to Illinois
Explore the most affordable flight options available from Pittsburgh to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This Mytrip deal was found by Cheapflights users on 4/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/287:00 amPIT - ORD
1 stop26h 50mSpirit Airlines
Wed 6/45:51 amORD - PIT
1 stop26h 29mSpirit Airlines
Deal found 4/30$170
This Mytrip deal was found by Cheapflights users on 4/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/3012:30 pmPIT - ORD
1 stop25h 12mMultiple Airlines
Sun 6/19:55 amORD - PIT
2 stops24h 41mMultiple Airlines
Deal found 4/30$199
This Trip.com deal was found by Cheapflights users on 4/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/96:14 pmPIT - STL
1 stop7h 00mFrontier
Sun 5/115:45 pmSTL - PIT
1 stop22h 39mFrontier
Deal found 4/30$216
This CheapOair deal was found by Cheapflights users on 4/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/233:51 pmPIT - MDW
1 stop5h 04mFrontier
Sat 5/319:12 pmMDW - PIT
1 stop19h 48mFrontier
Deal found 4/30$220
This Frontier deal was found by Cheapflights users on 4/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/235:40 pmPIT - ORD
1 stop7h 12mFrontier
Sun 5/259:17 amORD - PIT
1 stop8h 00mFrontier
Deal found 4/30$220
This Mytrip deal was found by Cheapflights users on 4/29. 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 7/317:00 amPIT - RFD
1 stop25h 42mAllegiant Air
Mon 8/48:42 amRFD - PIT
1 stop27h 48mAllegiant Air
Deal found 4/29$226
This Southwest deal was found by Cheapflights users on 4/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/286:45 amPIT - MDW
Nonstop1h 30mSouthwest
Wed 6/41:00 pmMDW - PIT
Nonstop1h 20mSouthwest
Deal found 4/30$235
This United Airlines deal was found by Cheapflights users on 4/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/285:56 pmPIT - ORD
Nonstop1h 49mUnited Airlines
Wed 6/42:15 pmORD - PIT
Nonstop1h 41mUnited Airlines
Deal found 4/30$235
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/185:35 amPIT - STL
1 stop5h 08mDelta
Sat 7/56:40 amSTL - PIT
1 stop3h 35mDelta
Deal found 4/30$235
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/244:15 pmPIT - ORD
Nonstop1h 47mAmerican Airlines
Sun 5/258:30 pmORD - PIT
Nonstop1h 42mAmerican Airlines
Deal found 4/30$237
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/188:25 pmPIT - STL
1 stop4h 29mAmerican Airlines
Sat 6/215:05 pmSTL - PIT
1 stop5h 03mAmerican Airlines
Deal found 4/30$242
This Southwest deal was found by Cheapflights users on 4/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/184:00 pmPIT - STL
Nonstop1h 45mSouthwest
Mon 8/258:25 amSTL - PIT
Nonstop1h 35mSouthwest
Deal found 4/30$253

Cheapflights Fare Finder

Customize your flight search to find flights from Pittsburgh 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 May 1, 2025.
Use the filters below to find and compare flights from Pittsburgh to Illinois that are best for you.

Fly from

Pittsburgh

Fly to

Illinois

Route

Depart

Return

Price

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Wed 5/28

7:00 am-8:50 am

1 stop26h 50m

Chicago O'Hare Intl

Wed 6/4

5:51 am-9:20 am

1 stop26h 29m

$170

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Fri 5/30

12:30 pm-12:42 pm

1 stop25h 12m

Chicago O'Hare Intl

Sun 6/1

9:55 am-11:36 am

2 stops24h 41m

$199

PittsburghSt. Louis

PIT - STL

PITSTL

Pittsburgh

Fri 5/9

6:14 pm-12:14 am

1 stop7h 00m

Lambert-St Louis

Sun 5/11

5:45 pm-5:24 pm

1 stop22h 39m

$216

PittsburghChicago

PIT - MDW

PITMDW

Pittsburgh

Fri 5/23

3:51 pm-7:55 pm

1 stop5h 04m

Chicago Midway

Sat 5/31

9:12 pm-6:00 pm

1 stop19h 48m

$220

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Fri 5/23

5:40 pm-11:52 pm

1 stop7h 12m

Chicago O'Hare Intl

Sun 5/25

9:17 am-6:17 pm

1 stop8h 00m

$220

PittsburghChicago

PIT - RFD

PITRFD

Pittsburgh

Thu 7/31

7:00 am-7:42 am

1 stop25h 42m

Chicago Greater Rockford

Mon 8/4

8:42 am-1:30 pm

1 stop27h 48m

$226

PittsburghChicago

PIT - MDW

PITMDW

Pittsburgh

Wed 5/28

6:45 am-7:15 am

Nonstop1h 30m

Chicago Midway

Wed 6/4

1:00 pm-3:20 pm

Nonstop1h 20m

$235

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Wed 5/28

5:56 pm-6:45 pm

Nonstop1h 49m

Chicago O'Hare Intl

Wed 6/4

2:15 pm-4:56 pm

Nonstop1h 41m

$235

PittsburghSt. Louis

PIT - STL

PITSTL

Pittsburgh

Wed 6/18

5:35 am-9:43 am

1 stop5h 08m

Lambert-St Louis

Sat 7/5

6:40 am-11:15 am

1 stop3h 35m

$235

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Sat 5/24

4:15 pm-5:02 pm

Nonstop1h 47m

Chicago O'Hare Intl

Sun 5/25

8:30 pm-11:12 pm

Nonstop1h 42m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 49 results
1
2
3
...
5

Best time to book a flight from Pittsburgh to Illinois

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

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

Currently, August is the cheapest month in which you can book a flight from Pittsburgh to Illinois (average of $245). Flying from Pittsburgh 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 PIT to IL?

Find hourly flight availability from Pittsburgh 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 May 1, 2025.

When flying from Pittsburgh to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Pittsburgh to Illinois

Explore weekly flight availability from Pittsburgh 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 May 1, 2025.

The most flights from PIT to USIL are scheduled on a Thursday (47 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (13 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 May 1, 2025.
Read through reviews of airlines operating flights from Pittsburgh to Illinois, such as Alaska Airlines, Southwest and Delta. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,294 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
JetBlue
7.3
Good
2,922 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Pittsburgh to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Pittsburgh to Illinois?

    Located just 13.5 mi from the city center, Pittsburgh (PIT) is the airport most travelers will use when flying to Illinois from Pittsburgh.

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

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $72. Frontier flights start at $89 while deals on JetBlue start at $98 one-way.

  • What are the most popular routes from Pittsburgh to Illinois?

    The most popular flight routes from Pittsburgh to Illinois are Pittsburgh - Chicago O'Hare Intl, Pittsburgh - Chicago Midway and Pittsburgh - Lambert-St Louis.

  • What are the most reliable airlines from Pittsburgh to Illinois?

    Before booking your flight to Illinois from Pittsburgh, check out the most reliable airlines to get you to your destination on time: Cathay Pacific (93%), Copa Airlines (92%), SWISS( 91%).

  • What are the cheapest flights from Pittsburgh to Illinois?

    Looking at all options, your cheapest flight can be booked for $78. While the most popular route (Pittsburgh - Chicago O'Hare Intl) can be booked for $173 on average our data indicates $785 when flying from Pittsburgh to Illinois.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Pittsburgh to Illinois (average of $245). Flying from Pittsburgh 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Pittsburgh to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
LaGuardia to Fort Lauderdale flights
John F Kennedy Intl to Los Angeles flights
Newark to Fort Lauderdale flights
John F Kennedy Intl to Miami flights
LaGuardia to Miami flights
Newark to Miami flights
Newark to Las Vegas flights
LaGuardia to Dallas/Fort Worth flights
LaGuardia to O'Hare Intl flights
Newark to Orlando flights
John F Kennedy Intl to Seattle flights
John F Kennedy Intl to Las Vegas flights
John F Kennedy Intl to O'Hare Intl flights
Newark to Dallas/Fort Worth flights
John F Kennedy Intl to Fort Lauderdale flights
Newark to Seattle flights
John F Kennedy Intl to Orlando flights
Newark to San Francisco flights
LaGuardia to Atlanta flights
Newark to Los Angeles flights
LaGuardia to Orlando flights
Newark to O'Hare Intl flights
John F Kennedy Intl to Hobby flights
LaGuardia to Los Angeles flights
John F Kennedy Intl to Dallas/Fort Worth flights
John F Kennedy Intl to San Francisco flights
John F Kennedy Intl to West Palm Beach flights
John F Kennedy Intl to Atlanta flights
LaGuardia to Las Vegas flights
Newark to Hobby flights
Newark to Atlanta flights
Reagan-National to Seattle flights
John F Kennedy Intl to Midway flights
Newark to Midway flights
John F Kennedy Intl to Sky Harbor Intl flights
LaGuardia to Hobby flights
Newark to Denver flights
Newark to Tampa flights
Reagan-National to Los Angeles flights
John F Kennedy Intl to Denver flights
LaGuardia to Denver flights
Dulles Intl to Dallas/Fort Worth flights
John F Kennedy Intl to Ontario flights
Dulles Intl to Seattle flights
Dulles Intl to Los Angeles flights
John F Kennedy Intl to George Bush Intcntl flights
John F Kennedy Intl to Tampa flights
Reagan-National to Dallas/Fort Worth flights
John F Kennedy Intl to Nashville flights
LaGuardia to Seattle flights

Top 5 airlines flying from Pittsburgh to Illinois

Discover the top 5 airlines that operate flights from Pittsburgh 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$89Average$174FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$118Average$294FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$125Average$323FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$126Average$315FlexibilityNo cancel feeOn-time63%
DeltaCheapest$197Average$456FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.