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$52 Find cheap flights from Missouri 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 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
Thu 7/11
Thu 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

January

High season

June

Cheapest flight

$52
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from St. Louis to Chicago O'Hare Airport

FAQs for booking Missouri to Chicago O'Hare Airport flights

  • How does KAYAK find such low prices on flights from Missouri 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 Missouri 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 Missouri 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 Missouri 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 Missouri 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 Missouri with another airline.

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

Find which airlines fly direct from Missouri to O'Hare Intl, which days they fly and book direct flights.

Nonstop departures

Missouri 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 Missouri

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
See more direct flights

Book cheap flights from Missouri to Chicago

Recent round-trip flight deals

9/5Thu
nonstopUnited Airlines
1h 21mSTL-ORD
10/5Sat
nonstopUnited Airlines
1h 19mORD-STL
$105
6/30Sun
nonstopAmerican Airlines
1h 22mSTL-ORD
7/3Wed
nonstopAmerican Airlines
1h 17mORD-STL
$108
6/15Sat
1 stop
3h 35mSTL-ORD
6/22Sat
1 stop
7h 37mORD-STL
$113
6/14Fri
1 stopSouthern / Mokulele
19h 25mSTL-ORD
6/16Sun
1 stopSouthern / Mokulele
23h 35mORD-STL
$118
8/9Fri
1 stopSouthern / Mokulele
3h 35mSTL-ORD
8/11Sun
1 stopSouthern / Mokulele
15h 25mORD-STL
$119
6/24Mon
1 stopFrontier
12h 32mMCI-ORD
7/1Mon
1 stopFrontier
10h 32mORD-MCI
$138
7/5Fri
1 stop
14h 40mSTL-ORD
7/9Tue
1 stop
14h 56mORD-STL
$145
8/9Fri
1 stopDelta
6h 53mMCI-ORD
8/11Sun
1 stopDelta
6h 04mORD-MCI
$156
7/15Mon
1 stopFrontier
12h 46mMCI-ORD
7/17Wed
1 stopFrontier
9h 18mORD-MCI
$158
10/3Thu
1 stopDelta
6h 51mMCI-ORD
10/17Thu
1 stopDelta
6h 37mORD-MCI
$171

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Recent one-way flight deals

8/27Tue
1 stopSouthern / Mokulele
3h 35mSTL-ORD
$52
8/7Wed
nonstopAmerican Airlines
1h 22mSTL-ORD
$53
6/17Mon
1 stopFrontier
12h 32mMCI-ORD
$63
8/9Fri
nonstopUnited Airlines
1h 25mSTL-ORD
$70
9/4Wed
1 stopSpirit Airlines
25h 37mMCI-ORD
$71
7/3Wed
1 stopDelta
6h 35mMCI-ORD
$78
7/9Tue
1 stopDelta
5h 17mSTL-ORD
$78
9/4Wed
2 stopsSpirit Airlines
23h 41mMCI-ORD
$79
7/10Wed
1 stopFrontier
14h 42mMCI-ORD
$82
7/3Wed
nonstopUnited Airlines
1h 41mMCI-ORD
$89

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Last minute flights from Missouri to O'Hare Intl

Last minute flight, train and bus deals

6/15Sat
multi-stop
3h 35mSTL-ORD
6/22Sat
multi-stop
7h 37mORD-STL
$113
6/15Sat
multi-stopSouthern / Mokulele
4h 10mSTL-ORD
6/15Sat
multi-stopSouthern / Mokulele
14h 05mORD-STL
$117
6/14Fri
multi-stopSouthern / Mokulele
19h 25mSTL-ORD
6/16Sun
multi-stopSouthern / Mokulele
23h 35mORD-STL
$118
6/13Thu
multi-stop
14h 40mSTL-ORD
6/18Tue
multi-stop
8h 47mORD-STL
$119
6/12Wed
multi-stopFrontier
28h 24mMCI-ORD
8/6Tue
multi-stopFrontier
24h 02mORD-MCI
$274
6/12Wed
nonstopAmerican Airlines
1h 37mMCI-ORD
8/6Tue
nonstopAmerican Airlines
1h 47mORD-MCI
$291
6/14Fri
nonstopUnited Airlines
1h 53mJLN-ORD
6/16Sun
nonstopUnited Airlines
1h 51mORD-JLN
$300
6/12Wed
nonstopAmerican Airlines
1h 37mMCI-ORD
8/6Tue
multi-stopAmerican Airlines
6h 17mORD-MCI
$301
6/12Wed
nonstopUnited Airlines
1h 53mJLN-ORD
6/18Tue
nonstopUnited Airlines
1h 51mORD-JLN
$320
6/16Sun
multi-stopSun Country Air
24h 36mMCI-ORD
6/23Sun
multi-stopSun Country Air
21h 38mORD-MCI
$368

Search by stops

Search by airline

Search by price