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

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

Book cheap flights from Ontario to Washington Dulles Intl

(Round-trip)
Depart: Tue Feb 17 2015 Return: Tue Mar 3 2015 Trip spans 15 days
United
United
ONT
3:55p
IAD
11:30p
7h 35m
1 stop
IAD
7:30a
ONT
5:46p
10h 16m
1 stop
Depart: Wed Feb 18 2015 Return: Tue Mar 3 2015 Trip spans 14 days
United
United
ONT
3:55p
IAD
11:30p
7h 35m
1 stop
IAD
7:30a
ONT
5:46p
10h 16m
1 stop
Depart: Thu Feb 19 2015 Return: Tue Mar 3 2015 Trip spans 13 days
United
United
ONT
6:35a
IAD
4:55p
10h 20m
1 stop
IAD
7:30a
ONT
5:46p
10h 16m
1 stop
Depart: Mon Feb 23 2015 Return: Tue Mar 3 2015 Trip spans 9 days
United
United
ONT
3:55p
IAD
11:30p
7h 35m
1 stop
IAD
7:30a
ONT
5:46p
10h 16m
1 stop
Depart: Tue Feb 24 2015 Return: Tue Mar 3 2015 Trip spans 8 days
United
United
ONT
3:55p
IAD
11:30p
7h 35m
1 stop
IAD
7:30a
ONT
5:46p
10h 16m
1 stop
Depart: Wed Feb 25 2015 Return: Tue Mar 10 2015 Trip spans 13 days
United
United
ONT
3:55p
IAD
11:30p
7h 35m
1 stop
IAD
8:30a
ONT
6:40p
10h 10m
1 stop
Depart: Thu Feb 26 2015 Return: Tue Mar 3 2015 Trip spans 6 days
United
United
ONT
6:35a
IAD
4:55p
10h 20m
1 stop
IAD
7:30a
ONT
5:46p
10h 16m
1 stop
Depart: Fri Feb 27 2015 Return: Tue Mar 3 2015 Trip spans 5 days
United
United
ONT
6:35a
IAD
4:55p
10h 20m
1 stop
IAD
7:30a
ONT
5:46p
10h 16m
1 stop
Depart: Tue Mar 3 2015 Return: Tue Mar 10 2015 Trip spans 7 days
United
United
ONT
12:35a
IAD
7:41a
7h 06m
1 stop
IAD
8:30a
ONT
6:40p
10h 10m
1 stop
Depart: Wed Mar 4 2015 Return: Tue Mar 10 2015 Trip spans 6 days
United
United
ONT
8:23a
IAD
5:15p
8h 52m
1 stop
IAD
8:30a
ONT
6:40p
10h 10m
1 stop
Depart: Thu Mar 5 2015 Return: Tue Mar 10 2015 Trip spans 5 days
United
United
ONT
2:00p
IAD
11:19p
9h 19m
1 stop
IAD
8:30a
ONT
6:40p
10h 10m
1 stop
Depart: Fri Mar 6 2015 Return: Tue Mar 10 2015 Trip spans 4 days
United
United
ONT
2:00p
IAD
11:09p
9h 09m
1 stop
IAD
8:30a
ONT
6:40p
10h 10m
1 stop
Depart: Tue Apr 7 2015 Return: Tue Apr 14 2015 Trip spans 8 days
United
United
ONT
1:53p
IAD
12:22a
10h 29m
1 stop
IAD
1:45a
ONT
9:20a
7h 35m
1 stop
Depart: Sun Feb 15 2015 Return: Tue Feb 17 2015 Trip spans 3 days
United
United
ONT
8:23a
IAD
2:39p
6h 16m
1 stop
IAD
12:29p
ONT
10:08p
9h 39m
1 stop
Depart: Tue Mar 10 2015 Return: Mon Mar 16 2015 Trip spans 7 days
United
United
ONT
3:00p
IAD
12:19a
9h 19m
1 stop
IAD
12:57p
ONT
10:59p
10h 02m
1 stop
Depart: Sat Feb 14 2015 Return: Tue Feb 24 2015 Trip spans 11 days
US Airways
US Airways
ONT
1:30a
IAD
10:46a
9h 16m
2 stops
IAD
1:25a
ONT
9:50a
8h 25m
1 stop
Depart: Mon Mar 2 2015 Return: Wed Mar 4 2015 Trip spans 3 days
American Airlines
American Airlines
ONT
7:40a
IAD
3:53p
8h 13m
2 stops
IAD
1:25a
ONT
9:50a
8h 25m
1 stop
Depart: Sat Mar 14 2015 Return: Sun Apr 5 2015 Trip spans 23 days
Alaska Airlines
Alaska Airlines
ONT
6:30a
IAD
10:20a
27h 50m
1 stop
IAD
2:20p
ONT
10:21p
32h 01m
1 stop
Depart: Sun Jul 12 2015 Return: Fri Jul 17 2015 Trip spans 6 days
Multiple Airlines
Multiple Airlines
ONT
3:30p
IAD
3:30a
12h 00m
2 stops
IAD
2:00a
ONT
10:58a
8h 58m
1 stop
Depart: Fri Mar 20 2015 Return: Sun Mar 22 2015 Trip spans 3 days
$1041
Select
Delta
Delta
ONT
2:15a
IAD
11:30a
9h 15m
2 stops
IAD
5:53a
ONT
3:00p
9h 07m
2 stops
Change your search
Airports
Origin

Ontario
$310
Destination

Washington
$310