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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: Tue May 19 2015 Return: Thu May 28 2015 Trip spans 10 days
US Airways
US Airways
DCA
1:30a
ONT
9:05a
7h 35m
1 stop
ONT
10:20a
DCA
5:07p
6h 47m
1 stop
Depart: Sat May 23 2015 Return: Sat May 30 2015 Trip spans 8 days
American Airlines
American Airlines
IAD
2:10p
ONT
10:20p
8h 10m
1 stop
ONT
10:20a
IAD
5:28p
7h 08m
1 stop
Depart: Sun May 24 2015 Return: Wed May 27 2015 Trip spans 4 days
United
United
DCA
10:21a
ONT
6:55p
8h 34m
1 stop
ONT
8:08a
DCA
4:12p
8h 04m
1 stop
Depart: Mon May 25 2015 Return: Thu May 28 2015 Trip spans 4 days
American Airlines
American Airlines
DCA
1:30a
ONT
9:05a
7h 35m
1 stop
ONT
10:20a
DCA
5:07p
6h 47m
1 stop
Depart: Thu May 28 2015 Return: Sun May 31 2015 Trip spans 4 days
United
United
IAD
4:30a
ONT
3:10p
10h 40m
1 stop
ONT
8:47a
IAD
6:56p
10h 09m
1 stop
Depart: Wed May 27 2015 Return: Fri May 29 2015 Trip spans 3 days
United
United
DCA
8:13a
ONT
6:10p
9h 57m
1 stop
ONT
8:08a
DCA
4:12p
8h 04m
1 stop
Depart: Fri May 29 2015 Return: Sun May 31 2015 Trip spans 3 days
United
United
IAD
12:47p
ONT
11:10p
10h 23m
1 stop
ONT
8:47a
IAD
6:56p
10h 09m
1 stop
Depart: Sat May 30 2015 Return: Tue Jun 2 2015 Trip spans 4 days
United
United
DCA
1:45a
ONT
10:27a
8h 42m
1 stop
ONT
2:55a
DCA
11:48a
8h 53m
1 stop
Depart: Sun May 31 2015 Return: Tue Jun 2 2015 Trip spans 3 days
United
United
IAD
1:45a
ONT
10:10a
8h 25m
1 stop
ONT
8:47a
IAD
5:15p
8h 28m
1 stop
Depart: Tue Jun 2 2015 Return: Sat Jun 6 2015 Trip spans 5 days
United
United
IAD
4:30a
ONT
3:10p
10h 40m
1 stop
ONT
10:00a
IAD
5:28p
7h 28m
1 stop
Depart: Sat Jun 6 2015 Return: Tue Jun 9 2015 Trip spans 4 days
United
United
DCA
1:51a
ONT
9:48a
7h 57m
1 stop
ONT
7:51a
DCA
4:17p
8h 26m
1 stop
Depart: Sat Sep 26 2015 Return: Wed Oct 7 2015 Trip spans 12 days
United
United
DCA
4:30a
ONT
3:48p
11h 18m
1 stop
ONT
7:35a
DCA
4:05p
8h 30m
1 stop
Depart: Tue May 12 2015 Return: Tue May 19 2015 Trip spans 8 days
American Airlines
American Airlines
DCA
11:25a
ONT
8:06p
8h 41m
2 stops
ONT
10:20a
DCA
5:07p
6h 47m
1 stop
Depart: Wed May 13 2015 Return: Tue May 19 2015 Trip spans 7 days
American Airlines
American Airlines
DCA
1:30a
ONT
9:05a
7h 35m
1 stop
ONT
10:20a
DCA
5:07p
6h 47m
1 stop
Depart: Sat May 9 2015 Return: Fri May 15 2015 Trip spans 7 days
United
United
IAD
12:00p
ONT
11:10p
11h 10m
2 stops
ONT
8:47a
IAD
6:25p
9h 38m
1 stop
Depart: Tue May 26 2015 Return: Fri May 29 2015 Trip spans 4 days
US Airways
US Airways
DCA
12:52p
ONT
10:20p
9h 28m
1 stop
ONT
10:20a
DCA
5:07p
6h 47m
1 stop
Depart: Thu May 14 2015 Return: Thu May 28 2015 Trip spans 15 days
US Airways
US Airways
IAD
2:10p
ONT
10:20p
8h 10m
1 stop
ONT
10:20a
IAD
5:28p
7h 08m
1 stop
Depart: Sun May 10 2015 Return: Tue May 19 2015 Trip spans 10 days
American Airlines
American Airlines
DCA
1:30a
ONT
9:05a
7h 35m
1 stop
ONT
10:20a
DCA
5:07p
6h 47m
1 stop
Depart: Mon May 11 2015 Return: Tue May 19 2015 Trip spans 9 days
American Airlines
American Airlines
DCA
1:30a
ONT
9:05a
7h 35m
1 stop
ONT
10:20a
DCA
5:07p
6h 47m
1 stop
Depart: Tue Jul 28 2015 Return: Thu Jul 30 2015 Trip spans 3 days
Alaska Airlines
Alaska Airlines
DCA
4:00a
ONT
4:15p
12h 15m
1 stop
ONT
6:25a
DCA
2:59p
8h 34m
1 stop
Airports
Origin

Washington
only $381
only $381
Destination

Ontario
$381