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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: Tue Apr 28 2015 Trip spans 8 days
American Airlines
American Airlines
ONT
8:35a
DCA
2:59p
6h 24m
1 stop
DCA
1:30a
ONT
9:07a
7h 37m
1 stop
Depart: Thu Apr 23 2015 Return: Mon Apr 27 2015 Trip spans 5 days
US Airways
US Airways
ONT
8:35a
DCA
2:59p
6h 24m
1 stop
DCA
1:15p
ONT
8:06p
6h 51m
1 stop
Depart: Wed Apr 22 2015 Return: Tue Apr 28 2015 Trip spans 7 days
United
United
ONT
9:30a
IAD
4:05p
6h 35m
1 stop
IAD
1:45a
ONT
9:20a
7h 35m
1 stop
Depart: Thu Apr 16 2015 Return: Sat Apr 18 2015 Trip spans 3 days
United
United
ONT
5:35a
DCA
3:13p
9h 38m
1 stop
DCA
1:49a
ONT
9:20a
7h 31m
1 stop
Depart: Wed Apr 15 2015 Return: Wed Apr 22 2015 Trip spans 8 days
American Airlines
American Airlines
ONT
10:20a
IAD
5:28p
7h 08m
1 stop
IAD
1:30a
ONT
9:07a
7h 37m
1 stop
Depart: Sun Apr 19 2015 Return: Thu Apr 23 2015 Trip spans 5 days
US Airways
US Airways
ONT
5:56p
IAD
6:03a
12h 07m
2 stops
IAD
9:40a
ONT
8:06p
10h 26m
2 stops
Depart: Wed Sep 16 2015 Return: Mon Sep 21 2015 Trip spans 6 days
Multiple Airlines
Multiple Airlines
ONT
8:59p
DCA
4:00a
7h 01m
1 stop
DCA
1:45a
ONT
9:55a
8h 10m
1 stop
Depart: Sat Aug 15 2015 Return: Sun Aug 23 2015 Trip spans 9 days
Multiple Airlines
Multiple Airlines
ONT
6:00a
IAD
4:25p
10h 25m
2 stops
IAD
1:45a
ONT
9:55a
8h 10m
1 stop
Depart: Sat Mar 7 2015 Return: Sat Mar 14 2015 Trip spans 7 days
Delta
Delta
ONT
1:15a
DCA
7:49a
6h 34m
1 stop
DCA
12:40p
ONT
9:30p
8h 50m
1 stop
Depart: Fri Jun 19 2015 Return: Fri Jun 26 2015 Trip spans 8 days
$1017
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Alaska Airlines
Alaska Airlines
ONT
2:05a
DCA
2:59p
12h 54m
1 stop
DCA
5:15a
ONT
6:58p
13h 43m
2 stops
Change your search
Airports
Origin

Ontario
$307
Destination

Washington
only $310
only $307