Find Cheap Flights to Chicago O'Hare International

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Lambert-St Louis to Chicago O'Hare International

(Round-trip)
Depart: Fri Jul 21 2017 Return: Sat Jul 22 2017 Trip spans 2 days
Air Choice One
Air Choice One
STL
12:00a
ORD
2:45a
2h 45m
1 stop
ORD
12:00a
STL
2:50a
2h 50m
1 stop
Depart: Tue Sep 19 2017 Return: Mon Sep 25 2017 Trip spans 7 days
Multiple Airlines
Multiple Airlines
STL
12:00a
ORD
6:57a
6h 57m
1 stop
ORD
12:00a
STL
1:10a
1h 10m
nonstop
Depart: Thu Sep 7 2017 Return: Tue Sep 12 2017 Trip spans 6 days
American Airlines
American Airlines
STL
12:00a
ORD
1:21a
1h 21m
nonstop
ORD
12:00a
STL
1:09a
1h 09m
nonstop
Depart: Mon Sep 18 2017 Return: Mon Sep 25 2017 Trip spans 8 days
Delta
Delta
STL
12:00a
ORD
3:31a
3h 31m
1 stop
ORD
12:00a
STL
6:20a
6h 20m
1 stop
Depart: Sun Jul 23 2017 Return: Mon Jul 24 2017 Trip spans 2 days
Air Choice One
Air Choice One
STL
12:00a
ORD
2:30a
2h 30m
1 stop
ORD
12:00a
STL
2:50a
2h 50m
1 stop
Depart: Mon Jul 24 2017 Return: Wed Jul 26 2017 Trip spans 3 days
Air Choice One
Air Choice One
STL
12:00a
ORD
2:45a
2h 45m
1 stop
ORD
12:00a
STL
2:50a
2h 50m
1 stop
Depart: Wed Sep 20 2017 Return: Mon Sep 25 2017 Trip spans 6 days
Multiple Airlines
Multiple Airlines
STL
12:00a
ORD
5:29a
5h 29m
1 stop
ORD
12:00a
STL
1:10a
1h 10m
nonstop
Depart: Wed Jul 26 2017 Return: Fri Jul 28 2017 Trip spans 3 days
Air Choice One
Air Choice One
STL
12:00a
ORD
5:30a
5h 30m
1 stop
ORD
12:00a
STL
2:50a
2h 50m
1 stop
Depart: Thu Sep 21 2017 Return: Mon Sep 25 2017 Trip spans 5 days
Delta
Delta
STL
12:00a
ORD
4:43a
4h 43m
1 stop
ORD
12:00a
STL
7:35a
7h 35m
1 stop
Depart: Thu Aug 10 2017 Return: Fri Aug 11 2017 Trip spans 2 days
Multiple Airlines
Multiple Airlines
STL
12:00a
ORD
2:30a
2h 30m
1 stop
ORD
12:00a
STL
1:06a
1h 06m
nonstop
Depart: Thu Jul 27 2017 Return: Sun Jul 30 2017 Trip spans 4 days
Air Choice One
Air Choice One
STL
12:00a
ORD
2:45a
2h 45m
1 stop
ORD
12:00a
STL
5:15a
5h 15m
1 stop
Depart: Sat Oct 14 2017 Return: Mon Oct 16 2017 Trip spans 3 days
Delta
Delta
STL
12:00a
ORD
6:17a
6h 17m
1 stop
ORD
12:00a
STL
6:07a
6h 07m
1 stop
Depart: Sat Sep 16 2017 Return: Mon Sep 25 2017 Trip spans 10 days
Multiple Airlines
Multiple Airlines
STL
12:00a
ORD
1:24a
1h 24m
nonstop
ORD
12:00a
STL
1:10a
1h 10m
nonstop
Depart: Fri Jul 28 2017 Return: Sat Jul 29 2017 Trip spans 2 days
Air Choice One
Air Choice One
STL
12:00a
ORD
2:45a
2h 45m
1 stop
ORD
12:00a
STL
2:50a
2h 50m
1 stop
Depart: Mon Sep 18 2017 Return: Tue Sep 26 2017 Trip spans 9 days
Multiple Airlines
Multiple Airlines
STL
12:00a
ORD
1:20a
1h 20m
nonstop
ORD
12:00a
STL
1:09a
1h 09m
nonstop
Depart: Fri Sep 15 2017 Return: Mon Sep 25 2017 Trip spans 11 days
Delta
Delta
STL
12:00a
ORD
5:00a
5h 00m
1 stop
ORD
12:00a
STL
6:20a
6h 20m
1 stop
Depart: Sun Jul 30 2017 Return: Wed Aug 2 2017 Trip spans 4 days
Air Choice One
Air Choice One
STL
12:00a
ORD
2:30a
2h 30m
1 stop
ORD
12:00a
STL
2:50a
2h 50m
1 stop
Depart: Thu Sep 21 2017 Return: Tue Sep 26 2017 Trip spans 6 days
Multiple Airlines
Multiple Airlines
STL
12:00a
ORD
1:20a
1h 20m
nonstop
ORD
12:00a
STL
1:09a
1h 09m
nonstop
Depart: Sun Sep 17 2017 Return: Mon Sep 25 2017 Trip spans 9 days
Delta
Delta
STL
12:00a
ORD
6:50a
6h 50m
1 stop
ORD
12:00a
STL
7:35a
7h 35m
1 stop
Depart: Tue Aug 1 2017 Return: Fri Aug 4 2017 Trip spans 4 days
Air Choice One
Air Choice One
STL
12:00a
ORD
2:45a
2h 45m
1 stop
ORD
12:00a
STL
2:50a
2h 50m
1 stop
Direct flights STL to ORD on American Airlines
Flight # Depart STL Arrive ORD Sun Mon Tue Wed Thu Fri Sat Valid Between
2287 5:00 am 6:13 am Jul 19 - Aug 21
2287 5:00 am 6:14 am Aug 22 - Nov 4
1475 6:05 am 7:31 am Jul 19 - Aug 21
1475 6:05 am 7:29 am Aug 22 - Sep 3
1585 7:15 am 8:38 am Aug 4 - Aug 4
1585 7:15 am 8:38 am Aug 6 - Aug 21
1585 7:15 am 8:36 am Aug 22 - Sep 3
1585 7:16 am 8:39 am Jul 19 - Aug 3
1585 7:20 am 8:43 am Jul 22 - Aug 19
2306 9:35 am 10:57 am Aug 6 - Aug 20
2306 9:35 am 10:57 am Aug 4 - Aug 21
2306 9:35 am 10:57 am Aug 5 - Aug 19
1102 9:37 am 10:54 am Aug 22 - Sep 3
2306 9:40 am 11:02 am Jul 23 - Jul 30
2306 9:40 am 11:02 am Jul 19 - Aug 3
2306 9:40 am 11:02 am Jul 22 - Jul 29
3366 12:43 pm 2:01 pm Aug 22 - Aug 29
3366 12:43 pm 2:04 pm Jul 25 - Aug 15
3366 12:43 pm 2:04 pm Jul 19 - Aug 21
3366 12:43 pm 2:01 pm Aug 23 - Aug 31
1308 4:00 pm 5:25 pm Jul 23 - Aug 20
1308 4:00 pm 5:25 pm Jul 25 - Aug 15
1308 4:00 pm 5:25 pm Jul 19 - Aug 16
1308 4:00 pm 5:25 pm Jul 20 - Aug 21
3472 4:00 pm 5:22 pm Jul 22 - Aug 19
1308 4:07 pm 5:28 pm Aug 22 - Aug 29
1308 4:07 pm 5:28 pm Aug 23 - Aug 30
1308 4:07 pm 5:28 pm Aug 24 - Aug 31
3740 7:30 pm 8:49 pm Aug 22 - Sep 1
3740 7:30 pm 8:53 pm Jul 19 - Aug 21
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
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Airports
Origin

St. Louis
$204
Destination

Chicago
$204
Airlines Airline reviews

9 travelers who booked a flight from St. Louis to Chicago rated their chosen airlines with an average of 7.0.

Overall
6.9
Boarding
6.9
Crew
8.0
Comfort
6.7
Food
6.9
Entertainment
5.8