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$59 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 6/5. 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
Sun 6/16
Sun 6/23

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In the last 7 days travelers have searched 42,332,103 times on KAYAK, and here is why:

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Good to know

Low season

March

High season

August

Cheapest flight

$59
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, +78 more

ANA, Aer Lingus, +79 more

Friday

ANA, Aer Lingus, Aerolineas Argentinas, +81 more

ANA, Aer Lingus, +82 more

Saturday

ANA, Aer Lingus, Aerolineas Argentinas, +79 more

ANA, Aer Lingus, +80 more

Sunday

ANA, Aer Lingus, Aerolineas Argentinas, +79 more

ANA, Aer Lingus, +80 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, +78 more

ANA, Aer Lingus, +79 more

Friday

ANA, Aer Lingus, Aerolineas Argentinas, +81 more

ANA, Aer Lingus, +82 more

Saturday

ANA, Aer Lingus, Aerolineas Argentinas, +79 more

ANA, Aer Lingus, +80 more

Sunday

ANA, Aer Lingus, Aerolineas Argentinas, +79 more

ANA, Aer Lingus, +80 more

See more direct flights
See more direct flights

Book cheap flights from Illinois to Chicago

Recent round-trip flight deals

5/30Thu
nonstopAmerican Airlines
1h 17mSTL-ORD
5/31Fri
nonstopAmerican Airlines
1h 13mORD-STL
$97
5/30Thu
nonstopAmerican Airlines
1h 17mSTL-ORD
5/31Fri
nonstopAmerican Airlines
1h 23mORD-STL
$100
8/20Tue
1 stopDelta
5h 46mSTL-MDW
9/4Wed
1 stopDelta
4h 29mMDW-STL
$156
11/9Sat
1 stopDelta
5h 51mSTL-ORD
11/9Sat
1 stopDelta
3h 46mORD-STL
$156
6/7Fri
nonstopSouthern / Mokulele
1h 45mUIN-ORD
6/8Sat
nonstopSouthern / Mokulele
1h 45mORD-UIN
$157
9/20Fri
nonstopUnited Airlines
1h 06mDEC-ORD
9/23Mon
nonstopUnited Airlines
1h 10mORD-DEC
$158
6/23Sun
nonstopSouthern / Mokulele
1h 45mUIN-ORD
6/30Sun
nonstopSouthern / Mokulele
1h 45mORD-UIN
$162
6/11Tue
3 stops
28h 10mSTL-ORD
6/15Sat
1 stop
5h 00mORD-STL
$183
6/10Mon
1 stop
3h 52mSTL-ORD
6/17Mon
2 stops
17h 26mORD-STL
$188
6/5Wed
nonstopUnited Airlines
1h 30mSTL-ORD
6/7Fri
nonstopUnited Airlines
1h 19mORD-STL
$239

Search by stops

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Recent one-way flight deals

6/5Wed
nonstopAmerican Airlines
1h 21mSTL-ORD
$59
6/7Fri
nonstopAmerican Airlines
1h 22mSTL-ORD
$69
6/11Tue
1 stopSpirit Airlines
11h 48mSTL-ORD
$74
6/14Fri
1 stopDelta
6h 13mSTL-MDW
$78
6/8Sat
1 stopDelta
5h 23mSTL-ORD
$78
5/31Fri
nonstopUnited Airlines
1h 24mSTL-ORD
$79
6/13Thu
1 stopSouthern / Mokulele
3h 52mSTL-ORD
$80
6/11Tue
3 stopsSpirit Airlines
28h 10mSTL-ORD
$81
6/28Fri
1 stopSouthern / Mokulele
3h 52mSTL-ORD
$82
7/1Mon
nonstopUnited Airlines
1h 05mDEC-ORD
$98

Search by stops

Search by airline

Search by price

Last minute flights from Illinois to Chicago

Last minute flight, train and bus deals

5/22Wed
multi-stopSouthern / Mokulele
18h 40mSTL-ORD
6/4Tue
multi-stopSouthern / Mokulele
5h 55mORD-STL
$178
5/22Wed
multi-stopSouthern / Mokulele
18h 40mSTL-ORD
5/24Fri
multi-stopSouthern / Mokulele
5h 55mORD-STL
$180
5/22Wed
multi-stop
20h 02mSTL-ORD
6/4Tue
multi-stop
22h 09mORD-STL
$234
5/22Wed
multi-stop
18h 40mSTL-ORD
6/4Tue
multi-stop
27h 30mORD-STL
$280
5/21Tue
nonstopAmerican Airlines
1h 03mMLI-ORD
1/8Wed
nonstopAmerican Airlines
0h 58mORD-MLI
$351
5/21Tue
nonstopUnited Airlines
1h 06mMLI-ORD
1/10Fri
nonstopUnited Airlines
1h 03mORD-MLI
$400
5/22Wed
nonstopUnited Airlines
1h 05mMLI-ORD
5/29Wed
nonstopUnited Airlines
1h 07mORD-MLI
$403
5/22Wed
multi-stopDelta
5h 06mSTL-MDW
6/4Tue
multi-stopDelta
4h 29mMDW-STL
$419
5/22Wed
multi-stopDelta
6h 29mSTL-MDW
6/4Tue
multi-stopDelta
4h 29mMDW-STL
$424
5/18Sat
nonstopAmerican Airlines
1h 19mSTL-ORD
5/18Sat
multi-stopAmerican Airlines
5h 50mORD-STL
$445

Search by stops

Search by airline

Search by price

Flights to Chicago

Return flight deals:

Chicago - Illinois

Cabin classes:

$587
$777
$805
$107