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: Tue Nov 7 2017 Return: Thu Nov 9 2017 Trip spans 3 days
Frontier
Frontier
ONT
12:00a
STL
7:30p
19h 30m
1 stop
STL
12:00a
ONT
7:34p
19h 34m
1 stop
Depart: Wed Oct 18 2017 Return: Thu Oct 19 2017 Trip spans 2 days
United
United
ONT
12:00a
STL
7:27a
7h 27m
1 stop
STL
12:00a
ONT
7:49a
7h 49m
1 stop
Depart: Fri Nov 17 2017 Return: Sat Dec 2 2017 Trip spans 16 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
STL
5:34a
5h 34m
1 stop
STL
12:00a
ONT
5:23a
5h 23m
1 stop
Depart: Sat Nov 18 2017 Return: Sat Nov 25 2017 Trip spans 8 days
American Airlines
American Airlines
ONT
12:00a
STL
5:13a
5h 13m
1 stop
STL
12:00a
ONT
7:37a
7h 37m
1 stop
Depart: Thu Nov 23 2017 Return: Sun Dec 3 2017 Trip spans 11 days
Frontier
Frontier
ONT
12:00a
STL
7:30p
19h 30m
1 stop
STL
12:00a
ONT
7:34p
19h 34m
1 stop
Depart: Sat Nov 18 2017 Return: Sat Dec 2 2017 Trip spans 15 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
STL
5:13a
5h 13m
1 stop
STL
12:00a
ONT
5:23a
5h 23m
1 stop
Depart: Sat Jan 13 2018 Return: Fri Jan 19 2018 Trip spans 7 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
STL
10:22p
22h 22m
1 stop
STL
12:00a
ONT
8:43a
8h 43m
1 stop
Depart: Fri Oct 13 2017 Return: Sun Oct 15 2017 Trip spans 3 days
United
United
ONT
12:00a
STL
3:17p
15h 17m
1 stop
STL
12:00a
ONT
7:39a
7h 39m
1 stop
Depart: Sat Dec 23 2017 Return: Sun Dec 31 2017 Trip spans 9 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
STL
7:33a
7h 33m
1 stop
STL
12:00a
ONT
5:12p
17h 12m
1 stop
Depart: Sat Mar 31 2018 Return: Sun Apr 8 2018 Trip spans 9 days
United
United
ONT
12:00a
STL
5:07a
5h 07m
1 stop
STL
12:00a
ONT
7:10a
7h 10m
1 stop
Depart: Sat Sep 30 2017 Return: Wed Oct 4 2017 Trip spans 5 days
United
United
ONT
12:00a
STL
8:29a
8h 29m
2 stops
STL
12:00a
ONT
6:05a
6h 05m
1 stop
Depart: Fri Sep 29 2017 Return: Mon Oct 2 2017 Trip spans 4 days
United
United
ONT
12:00a
STL
5:09a
5h 09m
1 stop
STL
12:00a
ONT
10:50a
10h 50m
1 stop
Depart: Thu Sep 28 2017 Return: Sun Oct 1 2017 Trip spans 4 days
$1166
Select
United
United
ONT
12:00a
STL
7:27a
7h 27m
1 stop
STL
12:00a
ONT
7:25a
7h 25m
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
$278
Destination

St. Louis
$278