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$61+ 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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
PIT — ORD
Mar 4 — Mar 111
Tue 3/4
Tue 3/11
1 adult, Economy
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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 February 27, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$152
(Southwest)

One-way from

$61
(Southwest)

Popular in

January

Cheapest in

August

Average price

$316

Good round-trip deal

$299 or less

Good one-way deal

$196 or less
Provider with most accurate pricing for Pittsburgh-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Pittsburgh-Chicago (CHI) flights.
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From Pittsburgh to Illinois
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One-way flight from Pittsburgh to Illinois
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Highest demand for flights based on searches. 10% potential increase in price ($33 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from Pittsburgh to Illinois.
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Price to beat on a one-way flight from Pittsburgh to Illinois.
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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 February 27, 2025.

This Southwest deal was found by Cheapflights users on 2/27. 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 5/1410:20 amPIT - MDW
2 stops9h 50mSouthwest
Wed 5/2110:35 amMDW - PIT
1 stop3h 45mSouthwest
Deal found 2/27$152
This Priceline deal was found by Cheapflights users on 2/26. 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 4/28:18 amPIT - ORD
1 stop9h 09mSpirit Airlines
Sat 4/55:22 pmORD - PIT
1 stop6h 07mSpirit Airlines
Deal found 2/26$152
This United Airlines deal was found by Cheapflights users on 2/27. 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.
Fri 4/46:03 pmPIT - ORD
Nonstop1h 52mUnited Airlines
Sun 4/67:10 amORD - PIT
Nonstop1h 34mUnited Airlines
Deal found 2/27$161
This Southwest deal was found by Cheapflights users on 2/27. 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.
Tue 4/86:00 amPIT - ORD
1 stop6h 50mSouthwest
Thu 4/101:50 pmORD - PIT
1 stop8h 05mSouthwest
Deal found 2/27$166
This American Airlines deal was found by Cheapflights users on 2/25. 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.
Tue 4/111:38 amPIT - ORD
Nonstop1h 51mAmerican Airlines
Sat 4/56:03 amORD - PIT
1 stop8h 44mAmerican Airlines
Deal found 2/25$173
This Delta deal was found by Cheapflights users on 2/26. 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.
Tue 4/1510:25 amPIT - MDW
1 stop3h 10mDelta
Tue 4/229:20 amMDW - PIT
1 stop3h 07mDelta
Deal found 2/26$177
This Delta deal was found by Cheapflights users on 2/26. 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.
Tue 4/156:25 amPIT - ORD
1 stop3h 56mDelta
Tue 4/229:30 amORD - PIT
1 stop2h 57mDelta
Deal found 2/26$177
This Delta deal was found by Cheapflights users on 2/27. 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.
Tue 4/15:59 pmPIT - STL
1 stop6h 32mDelta
Wed 4/26:50 amSTL - PIT
1 stop5h 35mDelta
Deal found 2/27$197
This Southwest deal was found by Cheapflights users on 2/27. 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.
Fri 5/96:20 amPIT - STL
1 stop3h 55mSouthwest
Mon 5/125:35 amSTL - PIT
1 stop3h 40mSouthwest
Deal found 2/27$215
This Mytrip deal was found by Cheapflights users on 2/26. 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 3/66:30 amPIT - ORD
2 stops30h 46mMultiple Airlines
Mon 3/107:21 pmORD - PIT
1 stop15h 24mMultiple Airlines
Deal found 2/26$231
This Mytrip deal was found by Cheapflights users on 2/27. 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.
Tue 4/18:18 amPIT - STL
1 stop10h 34mMultiple Airlines
Wed 4/212:15 pmSTL - PIT
3 stops35h 17mMultiple Airlines
Deal found 2/27$232
This CheapOair deal was found by Cheapflights users on 2/26. 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.
Thu 4/33:42 pmPIT - MDW
1 stop6h 58mFrontier
Sun 4/610:19 amMDW - PIT
1 stop9h 09mFrontier
Deal found 2/26$244

Find flights from Pittsburgh to Illinois within your budget

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 February 27, 2025.

Fly from

Pittsburgh

Fly to

Illinois

Route

Depart

Return

Price

PittsburghChicago

PIT - MDW

PITMDW

Pittsburgh

Wed 5/14

10:20 am-7:10 pm

2 stops9h 50m

Chicago Midway

Wed 5/21

10:35 am-3:20 pm

1 stop3h 45m

$152

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Wed 4/2

8:18 am-4:27 pm

1 stop9h 09m

Chicago O'Hare Intl

Sat 4/5

5:22 pm-12:29 am

1 stop6h 07m

$152

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Fri 4/4

6:03 pm-6:55 pm

Nonstop1h 52m

Chicago O'Hare Intl

Sun 4/6

7:10 am-9:44 am

Nonstop1h 34m

$161

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Tue 4/8

6:00 am-11:50 am

1 stop6h 50m

Chicago O'Hare Intl

Thu 4/10

1:50 pm-10:55 pm

1 stop8h 05m

$166

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Tue 4/1

11:38 am-12:29 pm

Nonstop1h 51m

Chicago O'Hare Intl

Sat 4/5

6:03 am-3:47 pm

1 stop8h 44m

$173

PittsburghChicago

PIT - MDW

PITMDW

Pittsburgh

Tue 4/15

10:25 am-12:35 pm

1 stop3h 10m

Chicago Midway

Tue 4/22

9:20 am-1:27 pm

1 stop3h 07m

$177

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Tue 4/15

6:25 am-9:21 am

1 stop3h 56m

Chicago O'Hare Intl

Tue 4/22

9:30 am-1:27 pm

1 stop2h 57m

$177

PittsburghSt. Louis

PIT - STL

PITSTL

Pittsburgh

Tue 4/1

5:59 pm-11:31 pm

1 stop6h 32m

Lambert-St Louis

Wed 4/2

6:50 am-1:25 pm

1 stop5h 35m

$197

PittsburghSt. Louis

PIT - STL

PITSTL

Pittsburgh

Fri 5/9

6:20 am-9:15 am

1 stop3h 55m

Lambert-St Louis

Mon 5/12

5:35 am-10:15 am

1 stop3h 40m

$215

PittsburghSt. Louis

PIT - STL

PITSTL

Pittsburgh

Tue 4/1

8:18 am-5:52 pm

1 stop10h 34m

Lambert-St Louis

Wed 4/2

12:15 pm-12:32 am

3 stops35h 17m

$232

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/27

Showing 1-10 of 41 results
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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.

Travel insights for flights from Pittsburgh to Illinois

Get recent, data-driven insights about flights from Pittsburgh to Illinois including ideal travel times, pricing trends, and more.

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 $322). 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 February 27, 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 February 27, 2025.

The most flights from PIT to USIL are scheduled on a Thursday (40 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (8 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 February 27, 2025.
Read through reviews of airlines operating flights from Pittsburgh to Illinois, such as Southwest, Alaska Airlines 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.
Southwest
8.1
Very good
4,362 reviews

Comfort

8.1

Entertainment

7.6

Crew

8.7

Boarding

8.2

Food

7.1

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Southwest
8.1
Very good
4,362 reviews
Southwest
8.1
Very good
4,362 reviews

Comfort

8.1

Entertainment

7.6

Crew

8.7

Boarding

8.2

Food

7.1

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Alaska Airlines
8.0
Very good
9,717 reviews
Southwest
8.1
Very good
4,362 reviews

Comfort

8.1

Entertainment

7.6

Crew

8.7

Boarding

8.2

Food

7.1

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Delta
8.0
Very good
8,138 reviews
Southwest
8.1
Very good
4,362 reviews

Comfort

8.1

Entertainment

7.6

Crew

8.7

Boarding

8.2

Food

7.1

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

JetBlue
7.4
Good
3,035 reviews
Southwest
8.1
Very good
4,362 reviews

Comfort

8.1

Entertainment

7.6

Crew

8.7

Boarding

8.2

Food

7.1

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

United Airlines
7.4
Good
8,724 reviews
Southwest
8.1
Very good
4,362 reviews

Comfort

8.1

Entertainment

7.6

Crew

8.7

Boarding

8.2

Food

7.1

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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 Southwest, which is currently one of the cheapest options available, starting at $61. United Airlines flights start at $61 while deals on Spirit Airlines start at $63 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: Copa Airlines (94%), Royal Jordanian (93%), Alaska Airlines( 92%).

  • What are the cheapest flights from Pittsburgh to Illinois?

    Looking at all options, your cheapest flight can be booked for $133. While the most popular route (Pittsburgh - Chicago O'Hare Intl) can be booked for $121 on average our data indicates $1,015 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 $322). 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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Top 4 airlines flying from Pittsburgh to Illinois

Discover the top 4 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 February 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$129Average$367FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$135Average$319FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$148Average$308FlexibilityNo cancel feeOn-time63%
DeltaCheapest$176Average$463FlexibilityNo cancel feeOn-timeN/A
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