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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: Sat Feb 14 2015 Return: Sun Feb 15 2015 Trip spans 2 days
US Airways
US Airways
DCA
12:00p
ONT
7:11p
7h 11m
1 stop
ONT
7:40a
DCA
2:00p
6h 20m
1 stop
Depart: Tue Mar 31 2015 Return: Tue Apr 14 2015 Trip spans 15 days
American Airlines
American Airlines
DCA
1:30a
ONT
9:07a
7h 37m
1 stop
ONT
8:35a
DCA
2:59p
6h 24m
1 stop
Depart: Tue Apr 14 2015 Return: Fri Apr 17 2015 Trip spans 4 days
American Airlines
American Airlines
DCA
6:45a
ONT
2:38p
7h 53m
1 stop
ONT
8:35a
DCA
2:59p
6h 24m
1 stop
Depart: Wed Apr 22 2015 Return: Mon Apr 27 2015 Trip spans 6 days
American Airlines
American Airlines
DCA
9:50a
ONT
7:00p
9h 10m
1 stop
ONT
8:35a
DCA
2:59p
6h 24m
1 stop
Depart: Sat Apr 25 2015 Return: Mon Apr 27 2015 Trip spans 3 days
American Airlines
American Airlines
DCA
2:55a
ONT
10:33a
7h 38m
1 stop
ONT
8:35a
DCA
2:59p
6h 24m
1 stop
Depart: Sun Apr 26 2015 Return: Mon Apr 27 2015 Trip spans 2 days
US Airways
US Airways
DCA
1:15p
ONT
8:06p
6h 51m
1 stop
ONT
8:35a
DCA
2:59p
6h 24m
1 stop
Depart: Mon Apr 27 2015 Return: Tue Apr 28 2015 Trip spans 2 days
US Airways
US Airways
DCA
1:15p
ONT
8:06p
6h 51m
1 stop
ONT
8:35a
DCA
2:59p
6h 24m
1 stop
Depart: Tue Apr 28 2015 Return: Wed Apr 29 2015 Trip spans 2 days
American Airlines
American Airlines
DCA
1:30a
ONT
9:07a
7h 37m
1 stop
ONT
8:35a
DCA
2:59p
6h 24m
1 stop
Depart: Wed Apr 29 2015 Return: Thu Apr 30 2015 Trip spans 2 days
American Airlines
American Airlines
DCA
1:30a
ONT
9:07a
7h 37m
1 stop
ONT
8:35a
DCA
2:59p
6h 24m
1 stop
Depart: Sun Feb 15 2015 Return: Wed Feb 18 2015 Trip spans 4 days
United
United
DCA
7:11a
ONT
5:46p
10h 35m
1 stop
ONT
6:35a
DCA
2:06p
7h 31m
1 stop
Depart: Tue Mar 3 2015 Return: Thu Mar 5 2015 Trip spans 3 days
United
United
DCA
9:00a
ONT
5:46p
8h 46m
1 stop
ONT
6:45a
DCA
2:10p
7h 25m
1 stop
Depart: Thu Feb 26 2015 Return: Tue Mar 3 2015 Trip spans 6 days
United
United
IAD
3:58a
ONT
3:03p
11h 05m
1 stop
ONT
12:35a
IAD
7:41a
7h 06m
1 stop
Depart: Mon Feb 16 2015 Return: Thu Feb 26 2015 Trip spans 11 days
Delta
Delta
DCA
11:30a
ONT
8:45p
9h 15m
1 stop
ONT
1:10a
DCA
7:39a
6h 29m
1 stop
Depart: Sat Apr 18 2015 Return: Sat Apr 25 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: Tue Feb 17 2015 Return: Thu Feb 19 2015 Trip spans 3 days
United
United
DCA
3:30a
ONT
1:20p
9h 50m
1 stop
ONT
6:35a
DCA
2:06p
7h 31m
1 stop
Depart: Wed Feb 18 2015 Return: Thu Feb 26 2015 Trip spans 9 days
Delta
Delta
DCA
11:30a
ONT
8:45p
9h 15m
1 stop
ONT
1:10a
DCA
7:39a
6h 29m
1 stop
Depart: Sat Feb 21 2015 Return: Tue Feb 24 2015 Trip spans 4 days
United
United
DCA
2:59a
ONT
1:20p
10h 21m
1 stop
ONT
6:35a
DCA
2:06p
7h 31m
1 stop
Depart: Mon Feb 23 2015 Return: Wed Feb 25 2015 Trip spans 3 days
American Airlines
American Airlines
DCA
11:00a
ONT
9:16p
10h 16m
1 stop
ONT
1:00a
DCA
10:11a
9h 11m
1 stop
Depart: Wed Apr 8 2015 Return: Sat Apr 11 2015 Trip spans 4 days
US Airways
US Airways
IAD
1:45a
ONT
9:07a
7h 22m
1 stop
ONT
10:20a
IAD
5:28p
7h 08m
1 stop
Depart: Wed Jul 15 2015 Return: Tue Jul 21 2015 Trip spans 7 days
Alaska Airlines
Alaska Airlines
DCA
4:00a
ONT
6:11p
14h 11m
2 stops
ONT
5:25a
DCA
2:59p
9h 34m
2 stops
Change your search
Airports
Origin

Washington
only $311
only $307
Destination

Ontario
$307