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Find Flight Deals from Washington to Ontario (WAS - ONT)

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Washington to Ontario

(Round-trip)
Depart: Wed Sep 23 2015 Return: Sat Sep 26 2015 Trip spans 4 days
Delta
Delta
DCA
12:35p
ONT
9:26p
8h 51m
1 stop
ONT
2:05a
DCA
8:49a
6h 44m
1 stop
Depart: Wed Oct 14 2015 Return: Wed Oct 21 2015 Trip spans 8 days
United
United
IAD
8:30a
ONT
7:15p
10h 45m
1 stop
ONT
1:20a
IAD
10:54a
9h 34m
1 stop
Depart: Thu Oct 1 2015 Return: Mon Oct 5 2015 Trip spans 5 days
United
United
DCA
1:45a
ONT
9:55a
8h 10m
1 stop
ONT
7:35a
DCA
2:48p
7h 13m
1 stop
Depart: Thu Sep 24 2015 Return: Thu Oct 1 2015 Trip spans 8 days
Delta
Delta
DCA
12:35p
ONT
9:26p
8h 51m
1 stop
ONT
2:05a
DCA
8:49a
6h 44m
1 stop
Depart: Tue Sep 29 2015 Return: Wed Oct 7 2015 Trip spans 9 days
Delta
Delta
DCA
12:35p
ONT
9:26p
8h 51m
1 stop
ONT
6:20a
DCA
3:59p
9h 39m
1 stop
Depart: Wed Sep 30 2015 Return: Wed Oct 7 2015 Trip spans 8 days
Delta
Delta
DCA
12:35p
ONT
9:26p
8h 51m
1 stop
ONT
6:20a
DCA
3:59p
9h 39m
1 stop
Depart: Sat Oct 3 2015 Return: Wed Oct 7 2015 Trip spans 5 days
United
United
DCA
4:30a
ONT
3:48p
11h 18m
1 stop
ONT
7:35a
DCA
2:48p
7h 13m
1 stop
Depart: Wed Oct 7 2015 Return: Tue Oct 13 2015 Trip spans 7 days
United
United
DCA
1:45a
ONT
9:55a
8h 10m
1 stop
ONT
7:35a
DCA
2:48p
7h 13m
1 stop
Depart: Sat Oct 17 2015 Return: Sat Oct 24 2015 Trip spans 8 days
United
United
IAD
12:50p
ONT
10:59p
10h 09m
1 stop
ONT
3:05p
IAD
11:53p
8h 48m
1 stop
Depart: Wed Nov 4 2015 Return: Wed Nov 11 2015 Trip spans 8 days
Delta
Delta
DCA
11:35a
ONT
8:26p
8h 51m
1 stop
ONT
1:05a
DCA
7:49a
6h 44m
1 stop
Depart: Sat Nov 7 2015 Return: Tue Dec 15 2015 Trip spans 39 days
United
United
DCA
12:45a
ONT
8:55a
8h 10m
1 stop
ONT
6:35a
DCA
1:48p
7h 13m
1 stop
Depart: Mon Nov 9 2015 Return: Mon Dec 14 2015 Trip spans 36 days
Delta
Delta
DCA
11:35a
ONT
8:26p
8h 51m
1 stop
ONT
1:05a
DCA
7:49a
6h 44m
1 stop
Depart: Tue Nov 10 2015 Return: Mon Dec 14 2015 Trip spans 35 days
United
United
DCA
9:00a
ONT
5:10p
8h 10m
1 stop
ONT
6:35a
DCA
1:48p
7h 13m
1 stop
Depart: Wed Nov 11 2015 Return: Tue Dec 15 2015 Trip spans 35 days
Delta
Delta
DCA
11:35a
ONT
8:26p
8h 51m
1 stop
ONT
1:05a
DCA
7:49a
6h 44m
1 stop
Depart: Sat Sep 5 2015 Return: Sat Sep 12 2015 Trip spans 8 days
US Airways
US Airways
DCA
1:20p
ONT
8:05p
6h 45m
1 stop
ONT
2:28a
DCA
9:15a
6h 47m
1 stop
Depart: Wed Sep 9 2015 Return: Sat Sep 12 2015 Trip spans 4 days
American Airlines
American Airlines
DCA
1:45a
ONT
8:57a
7h 12m
1 stop
ONT
8:59p
DCA
4:00a
7h 01m
1 stop
Depart: Tue Jun 2 2015 Return: Tue Jun 9 2015 Trip spans 8 days
American Airlines
American Airlines
IAD
1:30a
ONT
2:38p
13h 08m
2 stops
ONT
3:25p
IAD
4:18a
12h 53m
2 stops
Depart: Sat Jun 20 2015 Return: Wed Jun 24 2015 Trip spans 5 days
US Airways
US Airways
IAD
11:24a
ONT
9:58p
10h 34m
1 stop
ONT
10:15a
IAD
5:19p
7h 04m
1 stop
Depart: Fri Sep 18 2015 Return: Tue Sep 22 2015 Trip spans 5 days
Alaska Airlines
Alaska Airlines
IAD
2:50p
ONT
8:35a
17h 45m
1 stop
ONT
2:00a
IAD
10:50a
8h 50m
1 stop
Depart: Sat Oct 31 2015 Return: Tue Nov 3 2015 Trip spans 4 days
Alaska Airlines
Alaska Airlines
DCA
4:00a
ONT
7:16p
15h 16m
2 stops
ONT
4:25a
DCA
1:59p
9h 34m
2 stops
Airports
Origin

Washington
only $377
only $377
Destination

Ontario
$377