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$50 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 6/24. 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
Sat 6/29
Sat 7/6

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In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Good to know

Low season

March

High season

August

Cheapest flight

$50
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, +80 more

ANA, Aer Lingus, +81 more

Tuesday

ANA, Aer Lingus, Aerolineas Argentinas, +79 more

ANA, Aer Lingus, +80 more

Wednesday

ANA, Aer Lingus, Aeromexico, +79 more

ANA, Aer Lingus, +80 more

Thursday

ANA, Aer Lingus, Aeromexico, +79 more

ANA, Aer Lingus, +80 more

Friday

ANA, Aer Lingus, Aerolineas Argentinas, +81 more

ANA, Aer Lingus, +82 more

Saturday

ANA, Aer Lingus, Aerolineas Argentinas, +80 more

ANA, Aer Lingus, +81 more

Sunday

ANA, Aer Lingus, Aerolineas Argentinas, +80 more

ANA, Aer Lingus, +81 more

See more direct flights

Nonstop returns

Chicago to Illinois

Monday

ANA, Aer Lingus, Aeromexico, +80 more

ANA, Aer Lingus, +81 more

Tuesday

ANA, Aer Lingus, Aerolineas Argentinas, +79 more

ANA, Aer Lingus, +80 more

Wednesday

ANA, Aer Lingus, Aeromexico, +79 more

ANA, Aer Lingus, +80 more

Thursday

ANA, Aer Lingus, Aeromexico, +79 more

ANA, Aer Lingus, +80 more

Friday

ANA, Aer Lingus, Aerolineas Argentinas, +81 more

ANA, Aer Lingus, +82 more

Saturday

ANA, Aer Lingus, Aerolineas Argentinas, +80 more

ANA, Aer Lingus, +81 more

Sunday

ANA, Aer Lingus, Aerolineas Argentinas, +80 more

ANA, Aer Lingus, +81 more

See more direct flights
See more direct flights

Book cheap flights from Illinois to Chicago

Recent round-trip flight deals

6/19Wed
nonstopAmerican Airlines
1h 22mSTL-ORD
6/22Sat
nonstopAmerican Airlines
1h 17mORD-STL
$99
6/29Sat
nonstopAmerican Airlines
1h 22mSTL-ORD
7/1Mon
nonstopAmerican Airlines
1h 17mORD-STL
$108
6/21Fri
nonstopSouthern / Mokulele
1h 40mBRL-ORD
6/23Sun
nonstopSouthern / Mokulele
1h 40mORD-BRL
$113
6/24Mon
1 stopSouthern / Mokulele
3h 35mSTL-ORD
6/27Thu
1 stopSouthern / Mokulele
23h 35mORD-STL
$113
6/19Wed
nonstopUnited Airlines
1h 34mSTL-ORD
6/22Sat
nonstopUnited Airlines
1h 24mORD-STL
$137
6/6Thu
1 stop
14h 40mSTL-ORD
6/10Mon
2 stops
17h 26mORD-STL
$152
6/27Thu
nonstopUnited Airlines
1h 05mDEC-ORD
7/9Tue
nonstopUnited Airlines
1h 01mORD-DEC
$158
8/6Tue
1 stopDelta
4h 09mSTL-ORD
8/10Sat
2 stopsDelta
9h 57mORD-STL
$161
6/24Mon
1 stop
3h 35mSTL-ORD
6/27Thu
nonstop
1h 20mORD-STL
$165
6/27Thu
1 stopDelta
6h 13mSTL-MDW
7/4Thu
1 stopDelta
4h 09mMDW-STL
$217

Search by stops

Search by airline

Search by price

Recent one-way flight deals

6/24Mon
nonstopAmerican Airlines
1h 22mSTL-ORD
$50
6/19Wed
1 stopSouthern / Mokulele
3h 35mSTL-ORD
$56
7/6Sat
1 stopDelta
5h 40mSTL-MDW
$78
8/3Sat
1 stopDelta
3h 28mSTL-ORD
$78
8/26Mon
2 stopsSpirit Airlines
24h 56mSTL-ORD
$80
8/26Mon
3 stopsSpirit Airlines
29h 10mSTL-ORD
$93
7/31Wed
nonstopUnited Airlines
1h 05mDEC-ORD
$98
8/1Thu
nonstopUnited Airlines
1h 34mSTL-ORD
$115
6/26Wed
2 stops
21h 38mSTL-ORD
$126
6/10Mon
2 stops
18h 23mPIA-ORD
$127

Search by stops

Search by airline

Search by price

Last minute flights from Illinois to Chicago

Last minute flight, train and bus deals

6/4Tue
multi-stopSouthern / Mokulele
4h 10mSTL-ORD
6/4Tue
multi-stopSouthern / Mokulele
14h 05mORD-STL
$117
6/4Tue
multi-stopSouthern / Mokulele
4h 10mSTL-ORD
6/5Wed
multi-stopSouthern / Mokulele
14h 05mORD-STL
$121
6/4Tue
multi-stop
3h 35mSTL-ORD
6/5Wed
multi-stop
15h 13mORD-STL
$210
6/4Tue
multi-stop
3h 35mSTL-ORD
6/4Tue
multi-stop
20h 10mORD-STL
$225
6/4Tue
nonstopAmerican Airlines
1h 19mSTL-ORD
6/6Thu
nonstopAmerican Airlines
1h 13mORD-STL
$416
6/4Tue
nonstopAmerican Airlines
1h 16mSTL-ORD
6/4Tue
nonstopAmerican Airlines
1h 23mORD-STL
$423
6/1Sat
nonstopUnited Airlines
1h 34mSTL-ORD
6/8Sat
nonstopUnited Airlines
1h 27mORD-STL
$437
5/31Fri
nonstopUnited Airlines
1h 24mSTL-ORD
6/1Sat
nonstopUnited Airlines
1h 23mORD-STL
$452
5/31Fri
multi-stopDelta
5h 05mSTL-MDW
6/2Sun
multi-stopDelta
4h 01mMDW-STL
$486
6/4Tue
multi-stopDelta
6h 31mSTL-ORD
6/8Sat
multi-stopDelta
5h 46mORD-STL
$511

Search by stops

Search by airline

Search by price

Flights to Chicago

Return flight deals:

Chicago - Illinois

Cabin classes:

$712
$777
$1,124
$117