Find Cheap Flights from Ontario to Lambert-St Louis (ONT - STL)

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 Ontario to Lambert-St Louis

(Round-trip)
Depart: Wed Oct 11 2017 Return: Sat Oct 14 2017 Trip spans 4 days
United
United
ONT
2:00a
STL
10:44a
8h 44m
1 stop
STL
1:55a
ONT
10:38a
8h 43m
1 stop
Depart: Sat Oct 28 2017 Return: Wed Nov 1 2017 Trip spans 5 days
Delta
Delta
ONT
2:00a
STL
10:25a
8h 25m
2 stops
STL
10:00a
ONT
8:44p
10h 44m
2 stops
Depart: Wed Aug 23 2017 Return: Mon Aug 28 2017 Trip spans 6 days
American Airlines
American Airlines
ONT
8:59p
STL
2:43a
5h 44m
1 stop
STL
2:00p
ONT
7:39p
5h 39m
1 stop
Depart: Fri Aug 11 2017 Return: Mon Aug 28 2017 Trip spans 18 days
Major Airline
Major Airline
ONT
11:50a
STL
7:07a
19h 17m
1 stop
STL
9:04a
ONT
5:41p
8h 37m
1 stop
Depart: Tue Aug 8 2017 Return: Sat Aug 26 2017 Trip spans 19 days
United
United
ONT
12:50p
STL
7:06p
6h 16m
1 stop
STL
9:32a
ONT
3:30p
5h 58m
1 stop
Depart: Mon Aug 14 2017 Return: Tue Aug 22 2017 Trip spans 9 days
American Airlines
American Airlines
ONT
12:25p
STL
5:58p
5h 33m
1 stop
STL
3:17a
ONT
9:46a
6h 29m
1 stop
Depart: Fri Sep 1 2017 Return: Mon Sep 4 2017 Trip spans 4 days
Delta
Delta
ONT
6:20a
STL
11:59a
5h 39m
1 stop
STL
2:45p
ONT
8:44p
5h 59m
1 stop
Depart: Wed Aug 9 2017 Return: Sat Aug 26 2017 Trip spans 18 days
United
United
ONT
12:50p
STL
7:06p
6h 16m
1 stop
STL
7:55a
ONT
3:30p
7h 35m
1 stop
Depart: Sat Sep 2 2017 Return: Sun Sep 10 2017 Trip spans 9 days
American Airlines
American Airlines
ONT
2:34a
STL
8:20a
5h 46m
1 stop
STL
2:15a
ONT
7:57a
5h 42m
1 stop
Depart: Thu Aug 24 2017 Return: Sat Aug 26 2017 Trip spans 3 days
United
United
ONT
12:50p
STL
7:17p
6h 27m
1 stop
STL
7:55a
ONT
3:30p
7h 35m
1 stop
Depart: Sat Aug 12 2017 Return: Mon Aug 28 2017 Trip spans 17 days
Delta
Delta
ONT
8:43a
STL
2:50p
6h 07m
1 stop
STL
2:45p
ONT
8:44p
5h 59m
1 stop
Depart: Wed Jun 28 2017 Return: Wed Jul 12 2017 Trip spans 15 days
Major Airline
Major Airline
ONT
2:58a
STL
1:35p
10h 37m
3 stops
STL
11:17a
ONT
4:16p
28h 59m
3 stops
Depart: Thu Aug 31 2017 Return: Sat Sep 2 2017 Trip spans 3 days
United
United
ONT
12:50p
STL
7:17p
6h 27m
1 stop
STL
9:32a
ONT
3:30p
5h 58m
1 stop
Depart: Wed Sep 6 2017 Return: Sun Sep 17 2017 Trip spans 12 days
Major Airline
Major Airline
ONT
10:05p
STL
6:03a
7h 58m
1 stop
STL
9:04a
ONT
4:01a
18h 57m
1 stop
Depart: Wed Jul 19 2017 Return: Tue Jul 25 2017 Trip spans 7 days
American Airlines
American Airlines
ONT
12:30p
STL
5:58p
5h 28m
1 stop
STL
3:15p
ONT
9:06p
5h 51m
1 stop
Depart: Thu Sep 28 2017 Return: Mon Oct 2 2017 Trip spans 5 days
United
United
ONT
2:00a
STL
7:07a
5h 07m
1 stop
STL
1:55a
ONT
10:38a
8h 43m
1 stop
Depart: Fri Jun 23 2017 Return: Sun Jul 2 2017 Trip spans 10 days
Major Airline
Major Airline
ONT
11:50a
STL
7:07a
19h 17m
3 stops
STL
11:17a
ONT
4:16p
28h 59m
3 stops
Depart: Fri Jul 7 2017 Return: Sun Jul 9 2017 Trip spans 3 days
Delta
Delta
ONT
2:00a
STL
9:03a
7h 03m
1 stop
STL
1:35a
ONT
7:37a
6h 02m
1 stop
Depart: Tue Jul 25 2017 Return: Tue Aug 1 2017 Trip spans 8 days
American Airlines
American Airlines
ONT
9:10p
STL
4:42a
7h 32m
1 stop
STL
5:35a
ONT
11:23a
5h 48m
1 stop
Depart: Tue Aug 1 2017 Return: Tue Aug 8 2017 Trip spans 8 days
American Airlines
American Airlines
ONT
12:30p
STL
5:58p
5h 28m
1 stop
STL
3:15p
ONT
9:06p
5h 51m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Airports
Origin

Ontario
$308
Destination

St. Louis
$308