What is the cheapest airline that flies from Pittsburgh to Illinois?

Southwest, United Airlines, and Delta are the most popular carriers operating from Pittsburgh to Illinois

What airlines fly to Illinois?

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to Illinois from Pittsburgh according to our data. United Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 3 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

How many flights depart from Pittsburgh to Illinois on average per week?

As of October 2026, there are 321 flights per week flying from Pittsburgh to Illinois. The most common day of the week flights depart is Wed, with 20% of flights taking off on this day.

How many flights depart from Pittsburgh to Illinois on average per day?

The number of flights available between Pittsburgh and Illinois is 45 per day as of October 2026. The most frequent departure time is 4:00PM, with 48% of daily flights leaving at noon.

When did momondo last update prices for flights from Pittsburgh Airport to Illinois?

Prices for flights from Pittsburgh Airport to Illinois refresh daily.

How many operators does momondo search for flights from Pittsburgh Airport to Illinois?

There are 3 operators available for flights from Pittsburgh Airport to Illinois as of October 2026.

How old do you have to be to fly from Pittsburgh Airport to Illinois?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Pittsburgh Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$119 Cheap Flights from Pittsburgh to Illinois in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Pittsburgh to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:51 pm - 7:31 amPIT Pittsburgh-ORD Chicago O'Hare Intl

12h 40m1 stop Orlando

8:46 am - 7:23 pmORD Chicago O'Hare Intl-PIT Pittsburgh

9h 37m1 stop Orlando

$238Frontier

Wed, Oct 21 - Sat, Oct 24

7:51 pm - 7:51 amPIT Pittsburgh-ORD Chicago O'Hare Intl

13h 00m1 stop Orlando

9:51 am - 5:32 pmORD Chicago O'Hare Intl-PIT Pittsburgh

6h 41m1 stop Orlando

$248Frontier

Tue, Oct 20 - Tue, Oct 27

6:27 pm - 8:46 amPIT Pittsburgh-ORD Chicago O'Hare Intl

15h 19m1 stop Orlando

9:51 am - 5:32 pmORD Chicago O'Hare Intl-PIT Pittsburgh

6h 41m1 stop Orlando

$258Frontier

Fri, Nov 6 - Tue, Nov 10

9:57 am - 10:55 amPIT Pittsburgh-ORD Chicago O'Hare Intl

1h 58mnonstop

12:29 pm - 3:07 pmORD Chicago O'Hare Intl-PIT Pittsburgh

1h 38mnonstop

$275American Airlines

Mon, Nov 9 - Mon, Nov 16

2:07 pm - 2:55 pmPIT Pittsburgh-ORD Chicago O'Hare Intl

1h 48mnonstop

6:10 pm - 8:49 pmORD Chicago O'Hare Intl-PIT Pittsburgh

1h 39mnonstop

$277United Airlines

Thu, Nov 12 - Mon, Nov 16

11:01 am - 11:45 amPIT Pittsburgh-ORD Chicago O'Hare Intl

1h 44mnonstop

10:30 am - 1:06 pmORD Chicago O'Hare Intl-PIT Pittsburgh

1h 36mnonstop

$277United Airlines

Thu, Oct 22 - Mon, Oct 26

8:12 am - 9:20 amPIT Pittsburgh-ORD Chicago O'Hare Intl

2h 08mnonstop

4:50 pm - 7:34 pmORD Chicago O'Hare Intl-PIT Pittsburgh

1h 44mnonstop

$277American Airlines

Sat, Dec 5 - Mon, Dec 7

6:50 pm - 7:20 pmPIT Pittsburgh-MDW Chicago Midway

1h 30mnonstop

1:40 pm - 4:05 pmMDW Chicago Midway-PIT Pittsburgh

1h 25mnonstop

$277Southwest

Wed, Oct 28 - Wed, Nov 4

1:40 pm - 2:10 pmPIT Pittsburgh-MDW Chicago Midway

1h 30mnonstop

1:20 pm - 3:40 pmMDW Chicago Midway-PIT Pittsburgh

1h 20mnonstop

$277Southwest

Thu, Oct 22 - Mon, Oct 26

4:01 pm - 4:54 pmPIT Pittsburgh-ORD Chicago O'Hare Intl

1h 53mnonstop

12:31 pm - 3:07 pmORD Chicago O'Hare Intl-PIT Pittsburgh

1h 36mnonstop

$277American Airlines

Mon, Oct 26 - Wed, Oct 28

Cheap last minute flights

Enter your travel dates to find the best prices.

2:32 pm - 10:59 pmPIT Pittsburgh-ORD Chicago O'Hare Intl

9h 27m1 stop Orlando

1:00 pm - 7:54 pmORD Chicago O'Hare Intl-PIT Pittsburgh

5h 54m1 stop Boston Logan Intl

$360Multiple Airlines

Fri, Oct 2 - Mon, Nov 2

2:42 pm - 10:59 pmPIT Pittsburgh-ORD Chicago O'Hare Intl

9h 17m1 stop Orlando

9:38 am - 5:28 pmORD Chicago O'Hare Intl-PIT Pittsburgh

6h 50m1 stop Boston Logan Intl

$380Multiple Airlines

Wed, Oct 7 - Wed, Oct 14

2:42 pm - 10:59 pmPIT Pittsburgh-ORD Chicago O'Hare Intl

9h 17m1 stop Orlando

12:30 pm - 3:57 pmORD Chicago O'Hare Intl-PIT Pittsburgh

26h 27m2 stops Quincy Regional Nashville Intl

$396Multiple Airlines

Wed, Oct 7 - Wed, Oct 14

8:47 pm - 9:47 pmPIT Pittsburgh-ORD Chicago O'Hare Intl

2h 00mnonstop

5:00 pm - 7:43 pmORD Chicago O'Hare Intl-PIT Pittsburgh

1h 43mnonstop

$437American Airlines

Fri, Oct 2 - Mon, Nov 2

8:10 am - 8:40 amPIT Pittsburgh-MDW Chicago Midway

1h 30mnonstop

7:50 am - 10:20 amMDW Chicago Midway-PIT Pittsburgh

1h 30mnonstop

$437Southwest

Fri, Oct 2 - Mon, Nov 2

1:02 pm - 6:29 pmPIT Pittsburgh-ORD Chicago O'Hare Intl

6h 27m1 stop Washington, D.C. Reagan-National

9:46 am - 12:28 pmORD Chicago O'Hare Intl-PIT Pittsburgh

1h 42mnonstop

$447American Airlines

Fri, Oct 2 - Mon, Nov 2

8:10 am - 8:40 amPIT Pittsburgh-MDW Chicago Midway

1h 30mnonstop

6:30 am - 12:50 pmMDW Chicago Midway-PIT Pittsburgh

5h 20m1 stop Lambert-St Louis

$447Southwest

Fri, Oct 2 - Mon, Nov 2

8:36 pm - 9:29 pmPIT Pittsburgh-ORD Chicago O'Hare Intl

1h 53mnonstop

5:00 pm - 7:42 pmORD Chicago O'Hare Intl-PIT Pittsburgh

1h 42mnonstop

$467American Airlines

Wed, Oct 7 - Thu, Oct 8

7:00 am - 7:43 amPIT Pittsburgh-ORD Chicago O'Hare Intl

1h 43mnonstop

2:13 pm - 4:57 pmORD Chicago O'Hare Intl-PIT Pittsburgh

1h 44mnonstop

$486United Airlines

Sun, Oct 4 - Mon, Oct 5

7:59 pm - 11:43 pmPIT Pittsburgh-ORD Chicago O'Hare Intl

4h 44m1 stop Washington, D.C. Dulles Intl

5:59 am - 8:38 amORD Chicago O'Hare Intl-PIT Pittsburgh

1h 39mnonstop

$496United Airlines

Sun, Oct 4 - Mon, Oct 5

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American Airlines flights from Pittsburgh to Illinois

Our best American Airlines deals on Pittsburgh to Illinois flight tickets

American Airlines

Oct 22

PIT6:05 amPittsburgh

1h 54m

ORD6:59 amChicago O'Hare Intl

Oct 26

ORD9:00 pmChicago O'Hare Intl

1h 43m

PIT11:43 pmPittsburgh

$278

American Airlines

Oct 22

PIT6:05 amPittsburgh

1h 54m

ORD6:59 amChicago O'Hare Intl

Oct 26

ORD9:00 pmChicago O'Hare Intl

1h 43m

PIT11:43 pmPittsburgh

$279

American Airlines

Nov 9

PIT9:57 amPittsburgh

1h 58m

ORD10:55 amChicago O'Hare Intl

Nov 16

ORD2:55 pmChicago O'Hare Intl

5h 18m

1 stop

PIT9:13 pmPittsburgh

$284

Frontier flights from Pittsburgh to Illinois

Our best Frontier deals on Pittsburgh to Illinois flight tickets

Frontier

Oct 21

PIT7:51 pmPittsburgh

12h 40m

1 stop

ORD7:31 amChicago O'Hare Intl

Oct 24

ORD8:46 amChicago O'Hare Intl

9h 37m

1 stop

PIT7:23 pmPittsburgh

$238

Frontier

Oct 20

PIT7:51 pmPittsburgh

13h 00m

1 stop

ORD7:51 amChicago O'Hare Intl

Oct 27

ORD9:51 amChicago O'Hare Intl

6h 41m

1 stop

PIT5:32 pmPittsburgh

$248

Frontier

Oct 24

PIT8:18 pmPittsburgh

12h 13m

1 stop

ORD7:31 amChicago O'Hare Intl

Oct 26

ORD8:11 pmChicago O'Hare Intl

20h 21m

1 stop

PIT5:32 pmPittsburgh

$258

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PittsburghChicago

PIT Pittsburgh - ORD Chicago O'Hare Intl

PITORD

Pittsburgh

Wed 10/21

7:51 pm-7:31 am

1 stop12h 40m

Chicago O'Hare Intl

Sat 10/24

8:46 am-7:23 pm

1 stop9h 37m

$238

PittsburghChicago

PIT Pittsburgh - ORD Chicago O'Hare Intl

PITORD

Pittsburgh

Tue 10/20

7:51 pm-7:51 am

1 stop13h 00m

Chicago O'Hare Intl

Tue 10/27

9:51 am-5:32 pm

1 stop6h 41m

$248

PittsburghChicago

PIT Pittsburgh - ORD Chicago O'Hare Intl

PITORD

Pittsburgh

Fri 11/6

6:27 pm-8:46 am

1 stop15h 19m

Chicago O'Hare Intl

Tue 11/10

9:51 am-5:32 pm

1 stop6h 41m

$258

PittsburghChicago

PIT Pittsburgh - ORD Chicago O'Hare Intl

PITORD

Pittsburgh

Mon 11/9

9:57 am-10:55 am

Nonstop1h 58m

Chicago O'Hare Intl

Mon 11/16

12:29 pm-3:07 pm

Nonstop1h 38m

$275

PittsburghChicago

PIT Pittsburgh - ORD Chicago O'Hare Intl

PITORD

Pittsburgh

Thu 11/12

2:07 pm-2:55 pm

Nonstop1h 48m

Chicago O'Hare Intl

Mon 11/16

6:10 pm-8:49 pm

Nonstop1h 39m

$277

PittsburghChicago

PIT Pittsburgh - ORD Chicago O'Hare Intl

PITORD

Pittsburgh

Thu 10/22

11:01 am-11:45 am

Nonstop1h 44m

Chicago O'Hare Intl

Mon 10/26

10:30 am-1:06 pm

Nonstop1h 36m

$277

PittsburghChicago

PIT Pittsburgh - ORD Chicago O'Hare Intl

PITORD

Pittsburgh

Sat 12/5

8:12 am-9:20 am

Nonstop2h 08m

Chicago O'Hare Intl

Mon 12/7

4:50 pm-7:34 pm

Nonstop1h 44m

$277

PittsburghChicago

PIT Pittsburgh - MDW Chicago Midway

PITMDW

Pittsburgh

Wed 10/28

6:50 pm-7:20 pm

Nonstop1h 30m

Chicago Midway

Wed 11/4

1:40 pm-4:05 pm

Nonstop1h 25m

$277

Quickest round-trip

PittsburghChicago

PIT Pittsburgh - MDW Chicago Midway

PITMDW

Pittsburgh

Thu 10/22

1:40 pm-2:10 pm

Nonstop1h 30m

Chicago Midway

Mon 10/26

1:20 pm-3:40 pm

Nonstop1h 20m

$277

PittsburghChicago

PIT Pittsburgh - ORD Chicago O'Hare Intl

PITORD

Pittsburgh

Mon 10/26

4:01 pm-4:54 pm

Nonstop1h 53m

Chicago O'Hare Intl

Wed 10/28

12:31 pm-3:07 pm

Nonstop1h 36m

$277

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Pittsburgh to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Pittsburgh is in April. Flight prices, which tend to average around $300, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of April, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $331.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Pittsburgh to Illinois is on a Friday when prices can be found for as low as $426. Flights from Pittsburgh to Illinois on a Sunday will generally be more expensive and average around $584. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Pittsburgh to Illinois during this time can be as low as $441. Flights in the afternoon are often more expensive with an average ticket price of $515.

What is the cheapest Pittsburgh to Illinois flight route?

Fly from Pittsburgh to Chicago Midway for the best Pittsburgh - Illinois flight prices

How far in advance should I book a flight from Pittsburgh to Illinois?

You are more likely to see cheaper flights to Illinois from Pittsburgh when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $359 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Pittsburgh for as low as $181 on momondo.

What cabin class options are available on Pittsburgh to Illinois flights?

There are 4 cabin classes available to choose from on Pittsburgh to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Pittsburgh to Illinois flights?

No. A direct flight is the cheapest option for a flight between Pittsburgh to Illinois.

Cheap Pittsburgh to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Pittsburgh to Illinois

Best Price Found	$119
Fastest flight time	1h 25m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from Pittsburgh in the past 72 hours is $119. The best round-trip flight deal from Pittsburgh to Illinois found on momondo in the last 72 hours is $238.

The fastest flight from Pittsburgh to Illinois takes 1h 25m

Direct flights go from Pittsburgh to Illinois every day.

There are 98 airports in Illinois. From Pittsburgh there are direct flights to Chicago O'Hare Intl (ORD), Chicago Midway (MDW).

Search flight deals

Frequently asked questions about flying from Pittsburgh to Illinois

When did momondo last update prices for flights from Pittsburgh Airport to Illinois?
Prices for flights from Pittsburgh Airport to Illinois refresh daily.
How many operators does momondo search for flights from Pittsburgh Airport to Illinois?
There are 3 operators available for flights from Pittsburgh Airport to Illinois as of October 2026.
How old do you have to be to fly from Pittsburgh Airport to Illinois?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Pittsburgh Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Pittsburgh to Illinois?
momondo data reveals that the most frequently booked plane model on the route from Pittsburgh to Illinois is Airbus A320-100/200, representing 21.02% of all bookings. The subsequent popular models are Airbus A319 at 13.60%, Embraer 175 (Enhanced Winglets) at 13.37%, and Embraer 175 at 11.69%.

Best airlines flying from Pittsburgh to Illinois

Compare and see reviews for airlines that fly from Pittsburgh to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $137	Free Cancellation	Rating 8.0 4,208 reviews	Search Southwest flights
American Airlines	PriceFrom $147	Free Cancellation	Rating 7.0 12,102 reviews	Search American Airlines flights
United Airlines	PriceFrom $176	Free Cancellation	Rating 7.4 10,270 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Pittsburgh to Illinois?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Pittsburgh to Illinois. momondo saves you time and could save you money on your trip.

Can I find flights from Pittsburgh to Illinois with flexible booking policies on momondo?

All flight searches from Pittsburgh to Illinois on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Pittsburgh to Illinois?

Once you have performed a search for Pittsburgh to Illinois flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Pittsburgh to Illinois right now. Can momondo alert me if prices change?

Price alerts on flights to Illinois from Pittsburgh are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Illinois trip

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Popular cities in Illinois

Flights to New Yorkfrom $56

Flights to Los Angelesfrom $53

Flights to Orlandofrom $49

Flights to Miamifrom $77

Flights to San Franciscofrom $43

Flights to Chicagofrom $63

Flights to Las Vegasfrom $44

Flights to Washington, D.C.from $45

Flights to Fort Lauderdalefrom $60

Flights to Bostonfrom $103

Flights to Atlantafrom $38

Flights to Dallasfrom $50

Cheap flights from Pittsburgh to Illinois from $119

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Pittsburgh to Illinois departing on 11/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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American Airlines flights from Pittsburgh to Illinois

Our best American Airlines deals on Pittsburgh to Illinois flight tickets

Frontier flights from Pittsburgh to Illinois

Our best Frontier deals on Pittsburgh to Illinois flight tickets

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Use the filters below to find and compare flights from Pittsburgh to Illinois that are best for you.

See travel insights to Illinois from

How to get the cheapest flight ticket from Pittsburgh to Illinois

What is the cheapest month to fly to Illinois?

What is the cheapest day to depart on your flight to Illinois?

What is the cheapest time of day to depart on your flight to Illinois?

What is the cheapest Pittsburgh to Illinois flight route?

How far in advance should I book a flight from Pittsburgh to Illinois?

What cabin class options are available on Pittsburgh to Illinois flights?

Can stopping save me money on Pittsburgh to Illinois flights?

What is the cheapest airline that flies from Pittsburgh to Illinois?

What airlines fly to Illinois?

How many flights depart from Pittsburgh to Illinois on average per day?

How many flights depart from Pittsburgh to Illinois on average per week?

Cheap Pittsburgh to Illinois flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

Frequently asked questions about flying from Pittsburgh to Illinois

Best airlines flying from Pittsburgh to Illinois

Compare and see reviews for airlines that fly from Pittsburgh to Illinois with momondo

Why use momondo?

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Illinois

Popular cities in Illinois

Popular flights according to clicks in the last 7 days on momondo

Pittsburgh flight routes

According to popular flight searches on momondo this year

Illinois flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Illinois

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Complete your trip to Illinois

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According to popular flight searches on momondo this year