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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: Tue Apr 21 2015 Return: Sat Apr 25 2015 Trip spans 5 days
United
United
IAD
1:45a
ONT
9:20a
7h 35m
1 stop
ONT
2:00a
IAD
9:54a
7h 54m
1 stop
Depart: Tue Apr 14 2015 Return: Mon Apr 20 2015 Trip spans 7 days
United
United
IAD
1:45a
ONT
9:20a
7h 35m
1 stop
ONT
3:18p
IAD
11:43p
8h 25m
1 stop
Depart: Wed Apr 15 2015 Return: Mon Apr 20 2015 Trip spans 6 days
United
United
IAD
1:45a
ONT
9:20a
7h 35m
1 stop
ONT
3:18p
IAD
12:22a
9h 04m
1 stop
Depart: Thu Apr 16 2015 Return: Sat Apr 25 2015 Trip spans 10 days
United
United
IAD
2:00a
ONT
12:36p
10h 36m
1 stop
ONT
2:00a
IAD
8:53a
6h 53m
1 stop
Depart: Tue Apr 28 2015 Return: Thu Apr 30 2015 Trip spans 3 days
United
United
IAD
1:45a
ONT
9:20a
7h 35m
1 stop
ONT
10:06a
IAD
6:47p
8h 41m
1 stop
Depart: Wed Apr 29 2015 Return: Mon May 4 2015 Trip spans 6 days
United
United
IAD
1:45a
ONT
9:20a
7h 35m
1 stop
ONT
3:18p
IAD
12:22a
9h 04m
1 stop
Depart: Tue May 5 2015 Return: Tue May 12 2015 Trip spans 8 days
United
United
IAD
1:45a
ONT
9:20a
7h 35m
1 stop
ONT
1:52p
IAD
11:40p
9h 48m
1 stop
Depart: Wed May 6 2015 Return: Thu May 7 2015 Trip spans 2 days
United
United
IAD
1:45a
ONT
10:00a
8h 15m
1 stop
ONT
8:47a
IAD
6:58p
10h 11m
1 stop
Depart: Sun May 10 2015 Return: Fri May 15 2015 Trip spans 6 days
United
United
IAD
1:45a
ONT
10:10a
8h 25m
1 stop
ONT
1:52p
IAD
10:44p
8h 52m
1 stop
Depart: Wed Apr 22 2015 Return: Sat Apr 25 2015 Trip spans 4 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: Thu Apr 23 2015 Return: Sat Apr 25 2015 Trip spans 3 days
United
United
IAD
2:00a
ONT
12:36p
10h 36m
1 stop
ONT
1:30a
IAD
9:41a
8h 11m
1 stop
Depart: Sat Apr 25 2015 Return: Wed Apr 29 2015 Trip spans 5 days
United
United
IAD
2:49p
ONT
11:09p
8h 20m
1 stop
ONT
9:30a
IAD
4:05p
6h 35m
1 stop
Depart: Mon Apr 27 2015 Return: Tue Apr 28 2015 Trip spans 2 days
United
United
IAD
2:00a
ONT
12:36p
10h 36m
1 stop
ONT
3:18p
IAD
12:22a
9h 04m
1 stop
Depart: Thu Apr 30 2015 Return: Mon May 4 2015 Trip spans 5 days
United
United
IAD
7:26a
ONT
5:47p
10h 21m
1 stop
ONT
3:18p
IAD
12:22a
9h 04m
1 stop
Depart: Sat May 2 2015 Return: Wed May 6 2015 Trip spans 5 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: Mon May 4 2015 Return: Thu May 7 2015 Trip spans 4 days
United
United
IAD
2:00a
ONT
12:36p
10h 36m
1 stop
ONT
8:47a
IAD
6:58p
10h 11m
1 stop
Depart: Thu May 7 2015 Return: Sun May 10 2015 Trip spans 4 days
United
United
IAD
2:07a
ONT
11:17a
9h 10m
1 stop
ONT
4:39p
IAD
12:22a
7h 43m
1 stop
Depart: Fri May 8 2015 Return: Fri May 15 2015 Trip spans 8 days
United
United
IAD
2:07a
ONT
11:17a
9h 10m
1 stop
ONT
12:40p
IAD
10:44p
10h 04m
1 stop
Depart: Wed Apr 1 2015 Return: Wed Apr 15 2015 Trip spans 15 days
US Airways
US Airways
IAD
11:11a
ONT
7:00p
7h 49m
1 stop
ONT
10:20a
IAD
5:28p
7h 08m
1 stop
Depart: Wed Jul 15 2015 Return: Sun Jul 19 2015 Trip spans 5 days
Multiple Airlines
Multiple Airlines
IAD
2:00a
ONT
10:58a
8h 58m
1 stop
ONT
3:30p
IAD
3:30a
12h 00m
2 stops
Change your search
Airports
Origin

Washington
$308
Destination

Ontario
$308