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Find Flight Deals from Washington Dulles Intl to Ontario (IAD - ONT)

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

Book cheap flights from Washington Dulles Intl to Ontario

(Round-trip)
Depart: Sat Feb 7 2015 Return: Tue Feb 10 2015 Trip spans 4 days
United
United
IAD
12:26p
ONT
9:55p
9h 29m
1 stop
ONT
12:30a
IAD
11:02a
10h 32m
1 stop
Depart: Mon Feb 9 2015 Return: Wed Feb 11 2015 Trip spans 3 days
United
United
IAD
11:26a
ONT
9:55p
10h 29m
1 stop
ONT
1:13p
IAD
11:30p
10h 17m
1 stop
Depart: Thu Mar 5 2015 Return: Tue Mar 10 2015 Trip spans 5 days
United
United
IAD
6:36a
ONT
4:30p
9h 54m
1 stop
ONT
1:35a
IAD
10:50a
9h 15m
1 stop
Depart: Tue Mar 10 2015 Return: Tue Mar 17 2015 Trip spans 8 days
United
United
IAD
8:30a
ONT
5:30p
9h 00m
1 stop
ONT
1:35a
IAD
9:35a
8h 00m
1 stop
Depart: Wed Mar 11 2015 Return: Thu Mar 12 2015 Trip spans 2 days
United
United
IAD
1:50p
ONT
10:59p
9h 09m
1 stop
ONT
9:05a
IAD
6:11p
9h 06m
1 stop
Depart: Sat Mar 14 2015 Return: Tue Mar 17 2015 Trip spans 4 days
United
United
IAD
1:50p
ONT
10:59p
9h 09m
1 stop
ONT
1:35a
IAD
9:35a
8h 00m
1 stop
Depart: Mon Mar 16 2015 Return: Tue Mar 17 2015 Trip spans 2 days
United
United
IAD
1:50p
ONT
10:59p
9h 09m
1 stop
ONT
1:35a
IAD
8:55a
7h 20m
1 stop
Depart: Wed Mar 4 2015 Return: Sun Mar 8 2015 Trip spans 4 days
US Airways
US Airways
IAD
8:40a
ONT
7:11p
10h 31m
2 stops
ONT
5:56p
IAD
6:01a
12h 05m
2 stops
Depart: Wed Feb 25 2015 Return: Tue Mar 31 2015 Trip spans 34 days
American Airlines
American Airlines
IAD
1:25a
ONT
9:50a
8h 25m
1 stop
ONT
10:18a
IAD
5:28p
7h 10m
1 stop
Depart: Wed Feb 18 2015 Return: Mon Feb 23 2015 Trip spans 6 days
United
United
IAD
11:29a
ONT
10:08p
10h 39m
1 stop
ONT
3:55p
IAD
11:30p
7h 35m
1 stop
Depart: Mon Feb 2 2015 Return: Thu Feb 12 2015 Trip spans 11 days
American Airlines
American Airlines
IAD
8:07a
ONT
7:11p
11h 04m
2 stops
ONT
7:30a
IAD
3:53p
8h 23m
1 stop
Depart: Tue Mar 17 2015 Return: Tue Mar 24 2015 Trip spans 8 days
United
United
IAD
8:30a
ONT
6:36p
10h 06m
1 stop
ONT
3:00p
IAD
12:19a
9h 19m
1 stop
Depart: Wed Apr 8 2015 Return: Wed Apr 15 2015 Trip spans 8 days
United
United
IAD
1:45a
ONT
9:20a
7h 35m
1 stop
ONT
9:30a
IAD
4:05p
6h 35m
1 stop
Depart: Tue Apr 14 2015 Return: Wed Apr 15 2015 Trip spans 2 days
United
United
IAD
1:45a
ONT
9:20a
7h 35m
1 stop
ONT
9:30a
IAD
4:05p
6h 35m
1 stop
Depart: Sat Feb 14 2015 Return: Tue Feb 17 2015 Trip spans 4 days
United
United
IAD
12:20p
ONT
10:08p
9h 48m
1 stop
ONT
6:35a
IAD
4:55p
10h 20m
1 stop
Depart: Sat Feb 21 2015 Return: Wed Feb 25 2015 Trip spans 5 days
United
United
IAD
11:29a
ONT
10:08p
10h 39m
1 stop
ONT
12:33p
IAD
10:44p
10h 11m
1 stop
Depart: Wed Mar 18 2015 Return: Wed Mar 25 2015 Trip spans 8 days
United
United
IAD
12:57p
ONT
10:59p
10h 02m
1 stop
ONT
9:05a
IAD
6:12p
9h 07m
1 stop
Depart: Sat Mar 28 2015 Return: Wed Apr 1 2015 Trip spans 5 days
United
United
IAD
2:42p
ONT
10:59p
8h 17m
1 stop
ONT
3:00p
IAD
12:19a
9h 19m
1 stop
Depart: Sat Mar 21 2015 Return: Sat Mar 28 2015 Trip spans 8 days
Multiple Airlines
Multiple Airlines
IAD
1:50p
ONT
10:59p
9h 09m
1 stop
ONT
5:56p
IAD
3:29a
9h 33m
2 stops
Depart: Sat May 30 2015 Return: Tue Jun 2 2015 Trip spans 4 days
Delta
Delta
IAD
8:45a
ONT
7:41p
10h 56m
2 stops
ONT
2:20a
IAD
2:15p
11h 55m
2 stops
Change your search
Airports
Origin

Washington
$311
Destination

Ontario
$311