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

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

Book cheap flights from Ontario to Washington

(Round-trip)
Depart: Tue Apr 21 2015 Return: Wed Apr 22 2015 Trip spans 2 days
United
United
ONT
3:18p
IAD
11:43p
8h 25m
1 stop
IAD
5:19a
ONT
4:23p
11h 04m
1 stop
Depart: Tue May 5 2015 Return: Sat May 9 2015 Trip spans 5 days
US Airways
US Airways
ONT
8:35a
DCA
2:59p
6h 24m
1 stop
DCA
12:52p
ONT
10:20p
9h 28m
1 stop
Depart: Wed May 6 2015 Return: Sat May 9 2015 Trip spans 4 days
US Airways
US Airways
ONT
8:35a
DCA
2:59p
6h 24m
1 stop
DCA
1:10p
ONT
8:06p
6h 56m
1 stop
Depart: Tue May 12 2015 Return: Tue May 19 2015 Trip spans 8 days
US Airways
US Airways
ONT
8:35a
DCA
2:59p
6h 24m
1 stop
DCA
3:00a
ONT
10:33a
7h 33m
1 stop
Depart: Wed May 13 2015 Return: Tue May 19 2015 Trip spans 7 days
US Airways
US Airways
ONT
8:35a
DCA
2:59p
6h 24m
1 stop
DCA
3:00a
ONT
10:33a
7h 33m
1 stop
Depart: Wed May 27 2015 Return: Tue Jun 2 2015 Trip spans 7 days
US Airways
US Airways
ONT
8:35a
DCA
2:59p
6h 24m
1 stop
DCA
1:10p
ONT
8:06p
6h 56m
1 stop
Depart: Tue Jun 2 2015 Return: Wed Jun 3 2015 Trip spans 2 days
US Airways
US Airways
ONT
8:35a
DCA
2:59p
6h 24m
1 stop
DCA
3:00a
ONT
10:33a
7h 33m
1 stop
Depart: Mon Apr 27 2015 Return: Tue Apr 28 2015 Trip spans 2 days
United
United
ONT
3:18p
IAD
12:22a
9h 04m
1 stop
IAD
5:25a
ONT
4:23p
10h 58m
1 stop
Depart: Mon May 4 2015 Return: Tue May 5 2015 Trip spans 2 days
United
United
ONT
4:39p
IAD
12:22a
7h 43m
1 stop
IAD
5:25a
ONT
4:23p
10h 58m
1 stop
Depart: Sat May 9 2015 Return: Mon May 11 2015 Trip spans 3 days
American Airlines
American Airlines
ONT
2:30a
DCA
9:08a
6h 38m
1 stop
DCA
1:10p
ONT
8:06p
6h 56m
1 stop
Depart: Tue May 19 2015 Return: Sun May 24 2015 Trip spans 6 days
US Airways
US Airways
ONT
8:35a
DCA
2:59p
6h 24m
1 stop
DCA
3:00a
ONT
10:33a
7h 33m
1 stop
Depart: Wed Apr 15 2015 Return: Tue Apr 21 2015 Trip spans 7 days
United
United
ONT
6:45a
DCA
3:13p
8h 28m
1 stop
DCA
4:30a
ONT
12:36p
8h 06m
1 stop
Depart: Wed May 20 2015 Return: Wed May 27 2015 Trip spans 8 days
American Airlines
American Airlines
ONT
10:20a
IAD
5:28p
7h 08m
1 stop
IAD
2:10p
ONT
10:20p
8h 10m
1 stop
Depart: Tue Apr 14 2015 Return: Wed Apr 22 2015 Trip spans 9 days
United
United
ONT
3:18p
IAD
11:49p
8h 31m
1 stop
IAD
7:26a
ONT
4:23p
8h 57m
1 stop
Depart: Sat Apr 18 2015 Return: Tue Apr 21 2015 Trip spans 4 days
United
United
ONT
5:34a
DCA
3:45p
10h 11m
1 stop
DCA
4:30a
ONT
12:36p
8h 06m
1 stop
Depart: Wed Apr 22 2015 Return: Sat Apr 25 2015 Trip spans 4 days
United
United
ONT
6:55a
DCA
2:52p
7h 57m
1 stop
DCA
1:49a
ONT
9:20a
7h 31m
1 stop
Depart: Sat Apr 25 2015 Return: Tue Apr 28 2015 Trip spans 4 days
United
United
ONT
6:55a
DCA
4:09p
9h 14m
1 stop
DCA
8:12a
ONT
6:07p
9h 55m
1 stop
Depart: Wed Sep 9 2015 Return: Sun Sep 13 2015 Trip spans 5 days
Delta
Delta
ONT
2:05a
DCA
8:49a
6h 44m
1 stop
DCA
12:35p
ONT
9:26p
8h 51m
1 stop
Depart: Thu Jul 16 2015 Return: Sun Jul 19 2015 Trip spans 4 days
Alaska Airlines
Alaska Airlines
ONT
2:00a
IAD
10:39a
8h 39m
1 stop
IAD
2:40p
ONT
8:34a
17h 54m
1 stop
Depart: Sun Jun 28 2015 Return: Thu Jul 2 2015 Trip spans 5 days
$1052
Select
Alaska Airlines
Alaska Airlines
ONT
2:05a
DCA
2:59p
12h 54m
1 stop
DCA
5:15a
ONT
6:58p
13h 43m
2 stops
Airports
Origin

Ontario
$372
Destination

Washington
only $372
only $373