Find Cheap Flights from Washington to Ontario (WAS - ONT)

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 Washington to Ontario

(Round-trip)
Depart: Sat Oct 14 2017 Return: Sat Oct 21 2017 Trip spans 8 days
Frontier
Frontier
IAD
12:00a
ONT
7:55a
7h 55m
1 stop
ONT
12:00a
IAD
6:55a
6h 55m
1 stop
Depart: Wed Oct 18 2017 Return: Sat Oct 21 2017 Trip spans 4 days
United
United
DCA
12:00a
ONT
1:24p
13h 24m
2 stops
ONT
12:00a
DCA
7:30a
7h 30m
1 stop
Depart: Sat Oct 14 2017 Return: Mon Oct 16 2017 Trip spans 3 days
Major Airline
Major Airline
IAD
12:00a
ONT
7:55a
7h 55m
nonstop
ONT
12:00a
IAD
6:55a
6h 55m
nonstop
Depart: Tue Dec 19 2017 Return: Sun Jan 14 2018 Trip spans 27 days
Multiple Airlines
Multiple Airlines
IAD
12:00a
ONT
7:59a
7h 59m
1 stop
ONT
12:00a
IAD
6:46a
6h 46m
1 stop
Depart: Sat Oct 21 2017 Return: Sat Oct 28 2017 Trip spans 8 days
Frontier
Frontier
IAD
12:00a
ONT
7:55a
7h 55m
1 stop
ONT
12:00a
IAD
6:55a
6h 55m
1 stop
Depart: Wed Sep 27 2017 Return: Mon Oct 9 2017 Trip spans 13 days
American Airlines
American Airlines
IAD
12:00a
ONT
6:50p
18h 50m
1 stop
ONT
12:00a
IAD
12:25p
12h 25m
2 stops
Depart: Sat Dec 2 2017 Return: Tue Dec 5 2017 Trip spans 4 days
Frontier
Frontier
IAD
12:00a
ONT
7:54a
7h 54m
1 stop
ONT
12:00a
IAD
6:33a
6h 33m
1 stop
Depart: Tue Dec 5 2017 Return: Tue Dec 12 2017 Trip spans 8 days
Frontier
Frontier
IAD
12:00a
ONT
7:52a
7h 52m
1 stop
ONT
12:00a
IAD
6:46a
6h 46m
1 stop
Depart: Fri Dec 1 2017 Return: Fri Dec 8 2017 Trip spans 8 days
Alaska Airlines
Alaska Airlines
IAD
12:00a
ONT
11:53a
11h 53m
1 stop
ONT
12:00a
IAD
10:29a
10h 29m
1 stop
Depart: Sat Nov 11 2017 Return: Wed Nov 15 2017 Trip spans 5 days
Major Airline
Major Airline
IAD
12:00a
ONT
7:54a
7h 54m
nonstop
ONT
12:00a
IAD
6:40a
6h 40m
nonstop
Depart: Wed Nov 29 2017 Return: Sat Dec 2 2017 Trip spans 4 days
Frontier
Frontier
IAD
12:00a
ONT
7:54a
7h 54m
1 stop
ONT
12:00a
IAD
6:40a
6h 40m
1 stop
Depart: Fri Sep 29 2017 Return: Sun Oct 1 2017 Trip spans 3 days
Delta
Delta
IAD
12:00a
ONT
11:26a
11h 26m
2 stops
ONT
12:00a
IAD
11:55a
11h 55m
2 stops
Depart: Wed Jan 17 2018 Return: Tue Jan 23 2018 Trip spans 7 days
Frontier
Frontier
IAD
12:00a
ONT
8:11a
8h 11m
1 stop
ONT
12:00a
IAD
6:46a
6h 46m
1 stop
Depart: Mon Dec 25 2017 Return: Mon Jan 1 2018 Trip spans 8 days
United
United
IAD
12:00a
ONT
8:17a
8h 17m
1 stop
ONT
12:00a
IAD
7:57a
7h 57m
1 stop
Depart: Wed Feb 28 2018 Return: Tue Mar 6 2018 Trip spans 7 days
Frontier
Frontier
IAD
12:00a
ONT
8:11a
8h 11m
1 stop
ONT
12:00a
IAD
6:46a
6h 46m
1 stop
Depart: Sat Mar 3 2018 Return: Fri Mar 9 2018 Trip spans 7 days
United
United
DCA
12:00a
ONT
2:03p
14h 03m
2 stops
ONT
12:00a
DCA
10:31a
10h 31m
1 stop
Depart: Wed Jan 3 2018 Return: Tue Jan 9 2018 Trip spans 7 days
Frontier
Frontier
IAD
12:00a
ONT
8:11a
8h 11m
1 stop
ONT
12:00a
IAD
6:46a
6h 46m
1 stop
Depart: Mon Sep 25 2017 Return: Tue Sep 26 2017 Trip spans 2 days
American Airlines
American Airlines
DCA
12:00a
ONT
7:40a
7h 40m
1 stop
ONT
12:00a
DCA
6:50a
6h 50m
1 stop
Depart: Tue Oct 24 2017 Return: Tue Oct 31 2017 Trip spans 8 days
Frontier
Frontier
DCA
12:00a
ONT
11:49p
23h 49m
1 stop
ONT
12:00a
DCA
2:20p
14h 20m
1 stop
Depart: Sat Dec 30 2017 Return: Fri Jan 5 2018 Trip spans 7 days
American Airlines
American Airlines
DCA
12:00a
ONT
7:30a
7h 30m
1 stop
ONT
12:00a
DCA
7:03a
7h 03m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Why aren’t prices accurate 100% of the time?
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Airports
Origin

Washington
only $198
only $238
Destination

Ontario
$198