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$52 Find cheap flights from Illinois to Chicago

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Chicago departing on 8/27. 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
jue. 7/11
jue. 7/18

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In the last 7 days travelers have searched 44,212,782 times on KAYAK, and here is why:

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Good to know

Low season

March

High season

August

Cheapest flight

$52
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly and prices are also 27% lower on average.
Flight from St. Louis to Chicago O'Hare Airport

FAQs for booking flights from Illinois to Chicago

  • How does KAYAK find such low prices on flights from Illinois to Chicago?

    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 Illinois to Chicago.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Chicago?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago from Illinois 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 Illinois to Chicago?

    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 Chicago with an airline and back to Illinois with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Chicago?

    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 Chicago from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly non-stop from Illinois to Chicago?

Find which airlines fly direct from Illinois to Chicago, which days they fly and book direct flights.

Nonstop departures

Illinois to Chicago

Monday

ANA, Aer Lingus, Aeromexico, +81 more

ANA, Aer Lingus, +82 more

Tuesday

ANA, Aer Lingus, Aerolineas Argentinas, +80 more

ANA, Aer Lingus, +81 more

Wednesday

ANA, Aer Lingus, Aeromexico, +80 more

ANA, Aer Lingus, +81 more

Thursday

ANA, Aer Lingus, Aeromexico, +80 more

ANA, Aer Lingus, +81 more

Friday

ANA, Aer Lingus, Aerolineas Argentinas, +82 more

ANA, Aer Lingus, +83 more

Saturday

ANA, Aer Lingus, Aeromexico, +80 more

ANA, Aer Lingus, +81 more

Sunday

ANA, Aer Lingus, Aerolineas Argentinas, +81 more

ANA, Aer Lingus, +82 more

See more direct flights

Nonstop returns

Chicago to Illinois

Monday

ANA, Aer Lingus, Aeromexico, +81 more

ANA, Aer Lingus, +82 more

Tuesday

ANA, Aer Lingus, Aerolineas Argentinas, +80 more

ANA, Aer Lingus, +81 more

Wednesday

ANA, Aer Lingus, Aeromexico, +80 more

ANA, Aer Lingus, +81 more

Thursday

ANA, Aer Lingus, Aeromexico, +80 more

ANA, Aer Lingus, +81 more

Friday

ANA, Aer Lingus, Aerolineas Argentinas, +82 more

ANA, Aer Lingus, +83 more

Saturday

ANA, Aer Lingus, Aeromexico, +80 more

ANA, Aer Lingus, +81 more

Sunday

ANA, Aer Lingus, Aerolineas Argentinas, +81 more

ANA, Aer Lingus, +82 more

See more direct flights
See more direct flights

Book cheap flights from Illinois to Chicago

Recent round-trip flight deals

9/5jue.
nonstopUnited Airlines
1h 21mSTL-ORD
10/5sáb.
nonstopUnited Airlines
1h 19mORD-STL
$105
6/30dom.
nonstopAmerican Airlines
1h 22mSTL-ORD
7/3mié.
nonstopAmerican Airlines
1h 17mORD-STL
$108
6/15sáb.
1 stop
3h 35mSTL-ORD
6/22sáb.
1 stop
7h 37mORD-STL
$113
6/14vie.
1 stopSouthern / Mokulele
19h 25mSTL-ORD
6/16dom.
1 stopSouthern / Mokulele
23h 35mORD-STL
$118
8/9vie.
1 stopSouthern / Mokulele
3h 35mSTL-ORD
8/11dom.
1 stopSouthern / Mokulele
15h 25mORD-STL
$119
7/5vie.
1 stop
14h 40mSTL-ORD
7/9mar.
1 stop
14h 56mORD-STL
$145
7/10mié.
1 stopDelta
5h 48mSTL-MDW
7/17mié.
1 stopDelta
3h 53mMDW-STL
$156
7/9mar.
1 stopFrontier
8h 56mSTL-MDW
7/16mar.
1 stopFrontier
11h 40mMDW-STL
$158
6/21vie.
1 stopFrontier
10h 00mSTL-MDW
6/25mar.
1 stopFrontier
8h 47mMDW-STL
$166
8/31sáb.
1 stopDelta
4h 20mSTL-MDW
9/3mar.
1 stopDelta
4h 08mMDW-STL
$185

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Recent one-way flight deals

8/27mar.
1 stopSouthern / Mokulele
3h 35mSTL-ORD
$52
8/7mié.
nonstopAmerican Airlines
1h 22mSTL-ORD
$53
8/9vie.
nonstopUnited Airlines
1h 25mSTL-ORD
$70
7/10mié.
1 stopDelta
5h 48mSTL-MDW
$78
7/9mar.
1 stopDelta
5h 17mSTL-ORD
$78
8/7mié.
1 stopFrontier
8h 15mSTL-MDW
$82
8/27mar.
3 stopsSpirit Airlines
25h 43mSTL-ORD
$94
7/9mar.
nonstopUnited Airlines
1h 25mSTL-ORD
$99
9/8dom.
2 stopsSpirit Airlines
18h 43mSTL-ORD
$103
7/6sáb.
1 stopFrontier
13h 47mSTL-MDW
$130

Search by stops

Search by airline

Search by price

Last minute flights from Illinois to Chicago

Last minute flight, train and bus deals

6/15sáb.
multi-stop
3h 35mSTL-ORD
6/22sáb.
multi-stop
7h 37mORD-STL
$113
6/15sáb.
multi-stopSouthern / Mokulele
4h 10mSTL-ORD
6/15sáb.
multi-stopSouthern / Mokulele
14h 05mORD-STL
$117
6/14vie.
multi-stopFrontier
12h 11mSTL-MDW
6/23dom.
multi-stopFrontier
9h 32mMDW-STL
$166
6/15sáb.
multi-stopFrontier
9h 52mSTL-MDW
6/22sáb.
multi-stopFrontier
16h 11mMDW-STL
$181
6/14vie.
nonstopAmerican Airlines
1h 12mSPI-ORD
6/17lun.
nonstopAmerican Airlines
0h 58mORD-SPI
$358
6/13jue.
nonstopUnited Airlines
1h 30mSTL-ORD
7/16mar.
nonstopUnited Airlines
1h 20mORD-STL
$405
6/13jue.
multi-stopAmerican Airlines
7h 10mSTL-ORD
7/16mar.
nonstopAmerican Airlines
1h 28mORD-STL
$415
6/12mié.
nonstopUnited Airlines
1h 34mSTL-ORD
6/12mié.
nonstopUnited Airlines
1h 23mORD-STL
$432
6/15sáb.
multi-stopDelta
5h 21mSTL-MDW
6/15sáb.
multi-stopDelta
3h 32mMDW-STL
$456
6/12mié.
multi-stopDelta
5h 39mSTL-MDW
6/15sáb.
multi-stopDelta
4h 16mMDW-STL
$476

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Flights to Chicago

Return flight deals:

Chicago - Illinois

Cabin classes:

$793
$892
$1,124
$107