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: Sun Dec 3 2017 Return: Tue Dec 5 2017 Trip spans 3 days
Frontier
Frontier
ONT
12:00a
STL
7:30p
19h 30m
1 stop
STL
12:00a
ONT
5:30p
17h 30m
1 stop
Depart: Thu Nov 30 2017 Return: Fri Dec 1 2017 Trip spans 2 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
STL
7:30p
19h 30m
1 stop
STL
12:00a
ONT
8:11a
8h 11m
1 stop
Depart: Fri Mar 23 2018 Return: Sat Mar 31 2018 Trip spans 9 days
United
United
ONT
12:00a
STL
8:44a
8h 44m
1 stop
STL
12:00a
ONT
6:37a
6h 37m
1 stop
Depart: Wed Jan 3 2018 Return: Tue Jan 9 2018 Trip spans 7 days
Frontier
Frontier
ONT
12:00a
STL
10:37p
22h 37m
1 stop
STL
12:00a
ONT
4:42p
16h 42m
1 stop
Depart: Thu Nov 30 2017 Return: Sat Dec 2 2017 Trip spans 3 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
STL
7:30p
19h 30m
1 stop
STL
12:00a
ONT
6:55a
6h 55m
1 stop
Depart: Thu Apr 12 2018 Return: Sat Apr 14 2018 Trip spans 3 days
Frontier
Frontier
ONT
12:00a
STL
8:50p
20h 50m
1 stop
STL
12:00a
ONT
11:02a
11h 02m
1 stop
Depart: Thu Dec 14 2017 Return: Sun Dec 31 2017 Trip spans 18 days
Frontier
Frontier
ONT
12:00a
STL
7:24p
19h 24m
1 stop
STL
12:00a
ONT
4:57p
16h 57m
1 stop
Depart: Mon Dec 25 2017 Return: Sun Dec 31 2017 Trip spans 7 days
Frontier
Frontier
ONT
12:00a
STL
10:27p
22h 27m
1 stop
STL
12:00a
ONT
4:57p
16h 57m
1 stop
Depart: Wed Dec 27 2017 Return: Tue Jan 2 2018 Trip spans 7 days
Frontier
Frontier
ONT
12:00a
STL
10:37p
22h 37m
1 stop
STL
12:00a
ONT
5:07p
17h 07m
1 stop
Depart: Tue Nov 21 2017 Return: Wed Nov 22 2017 Trip spans 2 days
$1334
Select
Delta
Delta
ONT
12:00a
STL
5:42a
5h 42m
1 stop
STL
12:00a
ONT
6:17a
6h 17m
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
$186
Destination

St. Louis
$186