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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 May 2 2015 Return: Tue May 5 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: Tue May 12 2015 Return: Sat May 16 2015 Trip spans 5 days
US Airways
US Airways
IAD
2:10p
ONT
10:20p
8h 10m
1 stop
ONT
10:20a
IAD
5:28p
7h 08m
1 stop
Depart: Tue May 26 2015 Return: Wed Jun 3 2015 Trip spans 9 days
United
United
IAD
2:07a
ONT
11:17a
9h 10m
1 stop
ONT
6:43a
IAD
5:15p
10h 32m
1 stop
Depart: Tue May 5 2015 Return: Sat May 9 2015 Trip spans 5 days
American Airlines
American Airlines
IAD
1:30a
ONT
9:07a
7h 37m
1 stop
ONT
10:20a
IAD
5:28p
7h 08m
1 stop
Depart: Wed May 6 2015 Return: Sat May 9 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: Sat May 9 2015 Return: Tue May 12 2015 Trip spans 4 days
American Airlines
American Airlines
IAD
11:06a
ONT
7:00p
7h 54m
1 stop
ONT
10:20a
IAD
5:28p
7h 08m
1 stop
Depart: Wed May 13 2015 Return: Sat May 16 2015 Trip spans 4 days
US Airways
US Airways
IAD
1:30a
ONT
9:05a
7h 35m
1 stop
ONT
10:20a
IAD
5:28p
7h 08m
1 stop
Depart: Wed May 27 2015 Return: Tue Jun 2 2015 Trip spans 7 days
United
United
IAD
1:30p
ONT
11:10p
9h 40m
1 stop
ONT
3:17p
IAD
12:18a
9h 01m
1 stop
Depart: Sun May 10 2015 Return: Tue May 12 2015 Trip spans 3 days
United
United
IAD
2:07a
ONT
11:17a
9h 10m
1 stop
ONT
4:39p
IAD
12:18a
7h 39m
1 stop
Depart: Mon May 11 2015 Return: Wed May 13 2015 Trip spans 3 days
United
United
IAD
10:30a
ONT
7:09p
8h 39m
1 stop
ONT
8:47a
IAD
6:58p
10h 11m
1 stop
Depart: Sun May 24 2015 Return: Tue May 26 2015 Trip spans 3 days
United
United
IAD
4:30a
ONT
3:10p
10h 40m
1 stop
ONT
6:43a
IAD
5:15p
10h 32m
1 stop
Depart: Mon May 25 2015 Return: Wed May 27 2015 Trip spans 3 days
American Airlines
American Airlines
IAD
1:30a
ONT
9:05a
7h 35m
1 stop
ONT
10:20a
IAD
5:28p
7h 08m
1 stop
Depart: Thu May 28 2015 Return: Sat May 30 2015 Trip spans 3 days
American Airlines
American Airlines
IAD
1:30a
ONT
9:05a
7h 35m
1 stop
ONT
3:40a
IAD
10:26a
6h 46m
1 stop
Depart: Thu May 14 2015 Return: Thu May 21 2015 Trip spans 8 days
United
United
IAD
2:07a
ONT
11:17a
9h 10m
1 stop
ONT
8:47a
IAD
6:58p
10h 11m
1 stop
Depart: Tue May 19 2015 Return: Sat May 23 2015 Trip spans 5 days
American Airlines
American Airlines
IAD
1:30a
ONT
9:05a
7h 35m
1 stop
ONT
10:20a
IAD
5:28p
7h 08m
1 stop
Depart: Sat May 30 2015 Return: Tue Jun 9 2015 Trip spans 11 days
United
United
IAD
8:33a
ONT
5:47p
9h 14m
1 stop
ONT
2:07p
IAD
12:24a
10h 17m
1 stop
Depart: Tue Jun 2 2015 Return: Sat Jun 6 2015 Trip spans 5 days
American Airlines
American Airlines
IAD
11:06a
ONT
7:00p
7h 54m
1 stop
ONT
10:15a
IAD
5:19p
7h 04m
1 stop
Depart: Wed Jun 3 2015 Return: Sat Jun 6 2015 Trip spans 4 days
United
United
IAD
5:10a
ONT
3:10p
10h 00m
1 stop
ONT
8:44a
IAD
5:28p
8h 44m
1 stop
Depart: Thu Sep 3 2015 Return: Mon Sep 7 2015 Trip spans 5 days
Delta
Delta
IAD
9:35a
ONT
9:26p
11h 51m
2 stops
ONT
2:15p
IAD
2:12a
11h 57m
2 stops
Depart: Mon Aug 31 2015 Return: Wed Sep 9 2015 Trip spans 10 days
Alaska Airlines
Alaska Airlines
IAD
2:30p
ONT
8:44a
18h 14m
1 stop
ONT
2:00a
IAD
10:30a
8h 30m
1 stop
Airports
Origin

Washington
$377
Destination

Ontario
$377