How does KAYAK find such low prices on flights from Illinois to Chicago O'Hare Airport?

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 O'Hare Airport. Visit our flight page for the latest deals!>/a>

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago O'Hare Airport from Illinois is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Illinois to Chicago O'Hare Airport?

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 O'Hare Airport with an airline and back to Illinois with another airline. Visit our flight page for the latest deals!>/a>

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

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 O'Hare Airport from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$50 Cheap Flights from Illinois to Chicago O'Hare (ORD)

ORD

Search hundreds of travel sites at once for deals on flights to Chicago O'Hare Airport

...and more

In the last 7 days travelers have searched 44,281,614 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Low season	January
High season	June
Cheapest flight	$50

Best time to beat the crowds with an average 10% drop in price.

Most popular time to fly with an average 12% increase in price.

Flight from St. Louis to Chicago O'Hare Airport

How does KAYAK find such low prices on flights from Illinois to Chicago O'Hare Airport?
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 O'Hare Airport.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Chicago O'Hare Airport?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago O'Hare Airport 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 O'Hare Airport?
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 O'Hare Airport 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 O'Hare Airport?
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 O'Hare Airport from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Nonstop departures

Illinois to Chicago O'Hare Intl

Monday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Tuesday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

Wednesday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Thursday

ANA, Aer Lingus, Aeromexico, +76 more

ANA, Aer Lingus, +77 more

Friday

ANA, Aer Lingus, Aerolineas Argentinas, +78 more

ANA, Aer Lingus, +79 more

Saturday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Sunday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

See more direct flights

Nonstop returns

Chicago O'Hare Intl to Illinois

Monday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Tuesday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

Wednesday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Thursday

ANA, Aer Lingus, Aeromexico, +76 more

ANA, Aer Lingus, +77 more

Friday

ANA, Aer Lingus, Aerolineas Argentinas, +78 more

ANA, Aer Lingus, +79 more

Saturday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Sunday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

See more direct flights

Book cheap flights from Illinois to Chicago

Recent round-trip flight deals

6/28sex

nonstopAmerican Airlines

1h 22mSTL-ORD

7/1seg

nonstopAmerican Airlines

1h 17mORD-STL

$108

8/9sex

1 stopSouthern / Mokulele

19h 40mSTL-ORD

8/10sáb

1 stopSouthern / Mokulele

14h 05mORD-STL

$111

7/3qua

1 stop

3h 35mSTL-ORD

8/27ter

2 stops

22h 50mORD-STL

$132

7/3qua

1 stop

4h 10mSTL-ORD

8/27ter

3 stops

22h 15mORD-STL

$147

7/4qui

nonstopUnited Airlines

1h 05mDEC-ORD

7/11qui

nonstopUnited Airlines

1h 01mORD-DEC

$148

7/17qua

nonstopUnited Airlines

1h 05mDEC-ORD

7/24qua

nonstopUnited Airlines

1h 01mORD-DEC

$158

8/9sex

1 stopDelta

4h 08mSTL-ORD

8/10sáb

2 stopsDelta

9h 57mORD-STL

$161

9/7sáb

2 stopsSpirit Airlines

15h 37mSTL-ORD

9/14sáb

1 stopSpirit Airlines

11h 15mORD-STL

$191

8/22qui

1 stopDelta

7h 17mSTL-ORD

8/26seg

2 stopsDelta

9h 57mORD-STL

$192

8/22qui

2 stopsSpirit Airlines

32h 09mSTL-ORD

8/26seg

2 stopsSpirit Airlines

20h 11mORD-STL

$253

Recent one-way flight deals

6/28sex

nonstopAmerican Airlines

1h 22mSTL-ORD

$50

6/17seg

1 stopSouthern / Mokulele

3h 35mSTL-ORD

$55

9/7sáb

1 stopDelta

6h 28mSTL-ORD

$78

7/5sex

nonstopUnited Airlines

1h 05mDEC-ORD

$98

9/7sáb

2 stopsSpirit Airlines

15h 37mSTL-ORD

$119

6/27qui

nonstopUnited Airlines

1h 25mSTL-ORD

$127

8/13ter

2 stopsSpirit Airlines

10h 47mSTL-ORD

$130

7/19sex

2 stops

30h 58mSTL-ORD

$148

7/6sáb

2 stopsDelta

6h 29mSTL-ORD

$153

7/19sex

3 stops

23h 05mSTL-ORD

$155

Last minute flights from Illinois to O'Hare Intl

Last minute flight, train and bus deals

6/12qua

multi-stopSouthern / Mokulele

4h 10mSTL-ORD

6/12qua

multi-stopSouthern / Mokulele

14h 05mORD-STL

$117

6/11ter

multi-stopSouthern / Mokulele

19h 40mSTL-ORD

6/12qua

multi-stopSouthern / Mokulele

19h 20mORD-STL

$125

6/11ter

multi-stopSouthern / Mokulele

19h 25mSTL-ORD

6/18ter

multi-stopSouthern / Mokulele

14h 05mORD-STL

$129

6/12qua

multi-stop

3h 35mSTL-ORD

6/12qua

multi-stop

19h 51mORD-STL

$367

6/9dom

multi-stop

3h 15mSTL-ORD

6/11ter

multi-stop

17h 13mORD-STL

$393

6/12qua

nonstopAmerican Airlines

1h 04mMLI-ORD

6/19qua

nonstopAmerican Airlines

0h 56mORD-MLI

$423

6/12qua

nonstopAmerican Airlines

1h 05mPIA-ORD

6/27qui

nonstopAmerican Airlines

0h 59mORD-PIA

$424

6/12qua

nonstopUnited Airlines

1h 34mSTL-ORD

6/12qua

nonstopUnited Airlines

1h 23mORD-STL

$432

6/8sáb

multi-stopSpirit Airlines

18h 50mSTL-ORD

6/11ter

multi-stopSpirit Airlines

22h 08mORD-STL

$703

6/8sáb

multi-stopSpirit Airlines

9h 13mSTL-ORD

6/9dom

multi-stopSpirit Airlines

11h 12mORD-STL

$929

Flights to Chicago O'Hare Airport

Destination:

Chicago O'Hare Airport (ORD)United States

Return flight deals:

Chicago O'Hare Airport - Illinois

Cabin classes:

$793

$838

$1,124

$136

Browse origins:

$325

Flights from Bloomington to Chicago O'Hare Intl Airport

$113

Flights from Burlington to Chicago O'Hare Intl Airport

$410

Flights from Champaign to Chicago O'Hare Intl Airport

Flights from Chicago to Chicago O'Hare Intl Airport

$148

Flights from Decatur to Chicago O'Hare Intl Airport

$509

Flights from Dubuque to Chicago O'Hare Intl Airport

$458

Flights from Evansville to Chicago O'Hare Intl Airport

Flights from Marion to Chicago O'Hare Intl Airport

$279

Flights from Moline to Chicago O'Hare Intl Airport

$591

Flights from Paducah to Chicago O'Hare Intl Airport

$259

Flights from Peoria to Chicago O'Hare Intl Airport

$149

Flights from Quincy to Chicago O'Hare Intl Airport

$358

Flights from Springfield to Chicago O'Hare Intl Airport

$111

Flights from St. Louis to Chicago O'Hare Intl Airport

Browse destinations:

$111

Flights to Chicago O'Hare Intl Airport, Chicago

ORD

$50 Find cheap flights from Illinois to Chicago O'Hare Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to O'Hare Intl departing on 6/28. 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.

Search hundreds of travel sites at once for deals on flights to Chicago O'Hare Airport

Good to know

Low season

High season

Cheapest flight

FAQs for booking Illinois to Chicago O'Hare Airport flights

How does KAYAK find such low prices on flights from Illinois to Chicago O'Hare Airport?

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

What is the Hacker Fare option on flights from Illinois to Chicago O'Hare Airport?

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

Prefer to fly non-stop from Illinois to Chicago O'Hare Airport?

Illinois to Chicago O'Hare Intl

Chicago O'Hare Intl to Illinois

Book cheap flights from Illinois to Chicago

Recent round-trip flight deals

Search by stops

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Recent one-way flight deals

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Last minute flights from Illinois to O'Hare Intl

Last minute flight, train and bus deals

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Flights to Chicago O'Hare Airport

Destination:

Return flight deals:

Cabin classes:

Browse origins:

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