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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 6/26. 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
mié. 7/3
mié. 7/10

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In the last 7 days travelers have searched 41,909,192 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

6/22sáb.
1 stopSouthern / Mokulele
19h 40mSTL-ORD
6/23dom.
1 stopSouthern / Mokulele
19h 20mORD-STL
$117
7/6sáb.
1 stopSouthern / Mokulele
4h 10mSTL-ORD
7/8lun.
1 stopSouthern / Mokulele
8h 30mORD-STL
$120
8/13mar.
nonstopUnited Airlines
1h 28mSTL-ORD
8/17sáb.
nonstopUnited Airlines
1h 20mORD-STL
$127
7/27sáb.
nonstopAmerican Airlines
1h 21mSTL-ORD
7/27sáb.
nonstopAmerican Airlines
1h 13mORD-STL
$137
8/3sáb.
nonstopUnited Airlines
1h 05mDEC-ORD
8/29jue.
nonstopUnited Airlines
0h 59mORD-DEC
$148
8/13mar.
1 stopDelta
4h 14mSTL-ORD
8/17sáb.
2 stopsDelta
9h 57mORD-STL
$161
6/25mar.
nonstopAmerican Airlines
1h 22mSTL-ORD
6/30dom.
nonstopAmerican Airlines
1h 17mORD-STL
$178
9/20vie.
1 stop
3h 35mSTL-ORD
9/23lun.
1 stop
21h 37mORD-STL
$183
6/22sáb.
2 stops
9h 13mSTL-ORD
6/23dom.
1 stop
15h 25mORD-STL
$187
8/25dom.
1 stopDelta
6h 12mSTL-MDW
8/27mar.
1 stopDelta
7h 24mMDW-STL
$215

Search by stops

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Recent one-way flight deals

6/26mié.
nonstopAmerican Airlines
1h 22mSTL-ORD
$50
7/5vie.
nonstopAmerican Airlines
1h 21mSTL-ORD
$59
6/19mié.
1 stopSouthern / Mokulele
3h 35mSTL-ORD
$60
7/13sáb.
1 stopSouthern / Mokulele
4h 10mSTL-ORD
$61
8/27mar.
2 stopsSpirit Airlines
32h 00mSTL-ORD
$67
7/23mar.
1 stopDelta
5h 35mSTL-MDW
$78
8/27mar.
3 stopsSpirit Airlines
16h 08mSTL-ORD
$84
9/10mar.
nonstopUnited Airlines
1h 21mSTL-ORD
$89
7/5vie.
1 stopDelta
5h 44mSTL-MDW
$108
9/12jue.
nonstopUnited Airlines
1h 21mSTL-ORD
$129

Search by stops

Search by airline

Search by price

Last minute flights from Illinois to Chicago

Last minute flight, train and bus deals

6/7vie.
multi-stopSouthern / Mokulele
14h 40mSTL-ORD
6/9dom.
multi-stopSouthern / Mokulele
15h 25mORD-STL
$119
6/6jue.
multi-stopSouthern / Mokulele
14h 40mSTL-ORD
6/9dom.
multi-stopSouthern / Mokulele
15h 25mORD-STL
$123
6/7vie.
multi-stop
19h 25mSTL-ORD
6/10lun.
multi-stop
27h 52mORD-STL
$219
6/7vie.
multi-stop
14h 40mSTL-ORD
6/9dom.
multi-stop
17h 25mORD-STL
$221
6/4mar.
nonstopAmerican Airlines
1h 10mSPI-ORD
6/8sáb.
nonstopAmerican Airlines
0h 58mORD-SPI
$358
6/5mié.
nonstopUnited Airlines
1h 05mDEC-ORD
6/7vie.
nonstopUnited Airlines
1h 01mORD-DEC
$390
6/7vie.
nonstopAmerican Airlines
1h 22mSTL-ORD
6/21vie.
nonstopAmerican Airlines
1h 17mORD-STL
$403
6/6jue.
multi-stopSpirit Airlines
22h 00mSTL-ORD
6/9dom.
multi-stopSpirit Airlines
17h 25mORD-STL
$431
6/3lun.
nonstopUnited Airlines
1h 34mSTL-ORD
6/5mié.
nonstopUnited Airlines
1h 21mORD-STL
$452
6/6jue.
multi-stopSpirit Airlines
28h 43mSTL-ORD
6/9dom.
multi-stopSpirit Airlines
17h 25mORD-STL
$463

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Flights to Chicago

Return flight deals:

Chicago - Illinois

Cabin classes:

$712
$777
$1,124
$117