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$62+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
PIT — ORD
Jan 4 — Jan 111
Sat 1/4
Sat 1/11
1 adult, Economy
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Cheap flight deals from Pittsburgh to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Pittsburgh (PIT) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 30, 2024.

Round-trip from

$140
(FlightHub)

One-way from

$62
(Mytrip)
From Pittsburgh to Illinois
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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 December 30, 2024.

This United Airlines deal was found by Cheapflights users on 12/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/307:10 amPIT - ORD
Nonstop1h 53mUnited Airlines
Tue 1/149:05 pmORD - PIT
Nonstop1h 37mUnited Airlines
Deal found 12/29$430
This Delta deal was found by Cheapflights users on 12/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/306:00 amPIT - MDW
1 stop6h 08mDelta
Wed 1/159:34 amMDW - PIT
1 stop2h 51mDelta
Deal found 12/29$519
This Delta deal was found by Cheapflights users on 12/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3010:30 amPIT - ORD
1 stop3h 38mDelta
Wed 1/156:45 amORD - PIT
1 stop5h 40mDelta
Deal found 12/29$519
This Mytrip deal was found by Cheapflights users on 12/29. 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.
Tue 12/317:33 pmPIT - ORD
1 stop15h 34mSpirit Airlines
Wed 1/11:24 pmORD - PIT
1 stop5h 09mSpirit Airlines
Deal found 12/29$639
This Southwest deal was found by Cheapflights users on 12/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/309:25 pmPIT - MDW
Nonstop1h 30mSouthwest
Wed 1/11:10 pmMDW - PIT
Nonstop1h 20mSouthwest
Deal found 12/29$664
This Southwest deal was found by Cheapflights users on 12/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/306:00 amPIT - ORD
1 stop8h 00mSouthwest
Wed 1/111:25 amORD - PIT
2 stops9h 35mSouthwest
Deal found 12/29$687
This American Airlines deal was found by Cheapflights users on 12/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3010:39 amPIT - ORD
Nonstop1h 46mAmerican Airlines
Mon 1/63:01 pmORD - PIT
Nonstop1h 30mAmerican Airlines
Deal found 12/29$721
This United Airlines deal was found by Cheapflights users on 12/30. 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.
Tue 12/316:00 amPIT - STL
1 stop7h 29mUnited Airlines
Wed 1/110:35 amSTL - PIT
1 stop5h 13mUnited Airlines
Deal found 12/30$778
This Mytrip deal was found by Cheapflights users on 12/30. 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.
Tue 12/316:00 amPIT - STL
1 stop10h 21mMultiple Airlines
Wed 1/11:00 pmSTL - PIT
3 stops29h 33mMultiple Airlines
Deal found 12/30$1,002

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 December 30, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PittsburghSt. Louis

PIT - STL

PITSTL

Pittsburgh

Fri 2/28

8:36 pm-11:43 pm

1 stop28h 07m

Lambert-St Louis

Sun 3/2

5:20 pm-11:35 am

1 stop17h 15m

$140

PittsburghSt. Louis

PIT - STL

PITSTL

Pittsburgh

Wed 1/29

6:27 pm-2:43 pm

1 stop21h 16m

Lambert-St Louis

Wed 2/5

7:09 pm-3:44 pm

1 stop19h 35m

$172

PittsburghSt. Louis

PIT - STL

PITSTL

Pittsburgh

Tue 2/11

11:07 am-10:09 pm

1 stop12h 02m

Lambert-St Louis

Tue 2/18

5:45 am-3:41 pm

1 stop8h 56m

$223

PittsburghChicago

PIT - MDW

PITMDW

Pittsburgh

Tue 1/21

6:05 am-11:59 am

1 stop6h 54m

Chicago Midway

Fri 1/24

6:00 am-11:35 am

1 stop4h 35m

$231

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Tue 3/4

12:17 pm-12:57 pm

Nonstop1h 40m

Chicago O'Hare Intl

Thu 3/6

6:47 pm-9:28 pm

Nonstop1h 41m

$231

PittsburghChicago

PIT - MDW

PITMDW

Pittsburgh

Fri 2/28

6:15 am-1:35 pm

2 stops8h 20m

Chicago Midway

Mon 3/3

8:40 am-11:05 am

Nonstop1h 25m

$232

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Thu 2/27

4:20 pm-10:36 pm

1 stop7h 16m

Chicago O'Hare Intl

Sun 3/2

5:45 am-11:46 am

1 stop5h 01m

$236

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Thu 1/9

9:17 pm-9:34 am

1 stop13h 17m

Chicago O'Hare Intl

Sun 1/12

7:26 am-9:45 am

3 stops25h 19m

$237

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Thu 1/16

6:15 am-9:44 am

1 stop4h 29m

Chicago O'Hare Intl

Mon 1/20

7:30 am-10:16 am

Nonstop1h 46m

$238

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Wed 1/8

7:33 pm-9:34 am

1 stop15h 01m

Chicago O'Hare Intl

Wed 1/15

7:26 am-3:31 pm

1 stop7h 05m

$240

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/30

Showing 1-10 of 45 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 $317). 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 December 30, 2024.

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 December 30, 2024.

The most flights from PIT to USIL are scheduled on a Friday (44 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (26 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 December 30, 2024.
Read through reviews of airlines operating flights from Pittsburgh to Illinois, such as Spirit Airlines, United Airlines and Alaska Airlines. 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
4,715 reviews

Boarding

8.2

Food

7.2

Entertainment

7.7

Comfort

8.1

Crew

8.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,715 reviews
Southwest
8.1
Very good
4,715 reviews

Boarding

8.2

Food

7.2

Entertainment

7.7

Comfort

8.1

Crew

8.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,594 reviews
Southwest
8.1
Very good
4,715 reviews

Boarding

8.2

Food

7.2

Entertainment

7.7

Comfort

8.1

Crew

8.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,540 reviews
Southwest
8.1
Very good
4,715 reviews

Boarding

8.2

Food

7.2

Entertainment

7.7

Comfort

8.1

Crew

8.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

JetBlue
7.4
Good
3,231 reviews
Southwest
8.1
Very good
4,715 reviews

Boarding

8.2

Food

7.2

Entertainment

7.7

Comfort

8.1

Crew

8.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,985 reviews
Southwest
8.1
Very good
4,715 reviews

Boarding

8.2

Food

7.2

Entertainment

7.7

Comfort

8.1

Crew

8.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 Frontier, which is currently one of the cheapest options available, starting at $62. Southwest flights start at $69 while deals on Delta start at $88 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: Air Wisconsin (100%), Republic Airways (98%), SWISS( 95%).

  • What are the cheapest flights from Pittsburgh to Illinois?

    Looking at all options, your cheapest flight can be booked for $143. While the most popular route (Pittsburgh - Chicago O'Hare Intl) can be booked for $152 on average our data indicates $1,085 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 $317). 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.

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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 December 30, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$122Average$378FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$135Average$319FlexibilityNo cancel feeOn-time69%
DeltaCheapest$155Average$290FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$158Average$303FlexibilityNo cancel feeOn-time63%
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