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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
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: Wed Apr 22 2015 Return: Sat Apr 25 2015 Trip spans 4 days
American Airlines
American Airlines
IAD
1:30a
ONT
9:07a
7h 37m
1 stop
ONT
3:40a
IAD
10:26a
6h 46m
1 stop
Depart: Sat Apr 25 2015 Return: Wed Apr 29 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: Tue Apr 28 2015 Return: Sat May 2 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: Wed Apr 29 2015 Return: Sat May 2 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 2 2015 Return: Tue May 5 2015 Trip spans 4 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: Sat May 9 2015 Return: Tue May 19 2015 Trip spans 11 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: Tue May 12 2015 Return: Sat May 16 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: Tue Apr 14 2015 Return: Tue Apr 21 2015 Trip spans 8 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: Wed Apr 15 2015 Return: Tue Apr 21 2015 Trip spans 7 days
US Airways
US Airways
IAD
1:30a
ONT
9:07a
7h 37m
1 stop
ONT
10:20a
IAD
5:28p
7h 08m
1 stop
Depart: Sat Apr 18 2015 Return: Wed Apr 22 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: Mon Apr 20 2015 Return: Wed Apr 22 2015 Trip spans 3 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: Thu Apr 23 2015 Return: Sat Apr 25 2015 Trip spans 3 days
US Airways
US Airways
IAD
1:30a
ONT
9:07a
7h 37m
1 stop
ONT
10:20a
IAD
5:28p
7h 08m
1 stop
Depart: Sun Apr 26 2015 Return: Wed Apr 29 2015 Trip spans 4 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: Mon Apr 27 2015 Return: Wed Apr 29 2015 Trip spans 3 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: Sun May 3 2015 Return: Tue May 5 2015 Trip spans 3 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: Mon May 11 2015 Return: Tue May 19 2015 Trip spans 9 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: Wed May 13 2015 Return: Sat May 16 2015 Trip spans 4 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: Wed May 6 2015 Return: Tue May 12 2015 Trip spans 7 days
United
United
IAD
2:07a
ONT
11:27a
9h 20m
1 stop
ONT
3:17p
IAD
11:40p
8h 23m
1 stop
Depart: Wed Jun 3 2015 Return: Tue Jun 9 2015 Trip spans 7 days
$1112
Select
Delta
Delta
IAD
5:44a
ONT
2:59p
9h 15m
2 stops
ONT
6:15a
IAD
2:15p
8h 00m
2 stops
Airports
Origin

Washington
$351
Destination

Ontario
$351