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

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Ontario to Washington Dulles Intl

(Round-trip)
Depart: Thu Apr 20 2017 Return: Wed Apr 26 2017 Trip spans 7 days
Major Airline
Major Airline
ONT
10:20p
IAD
5:19a
30h 59m
2 stops
IAD
9:30a
ONT
4:52a
19h 22m
2 stops
Depart: Wed Apr 26 2017 Return: Tue May 2 2017 Trip spans 7 days
United
United
ONT
9:35a
IAD
3:57p
6h 22m
1 stop
IAD
12:15p
ONT
7:11p
6h 56m
1 stop
Depart: Fri Apr 28 2017 Return: Sat May 6 2017 Trip spans 9 days
American Airlines
American Airlines
ONT
9:15p
IAD
3:58a
6h 43m
1 stop
IAD
3:17a
ONT
12:38p
9h 21m
1 stop
Depart: Tue May 2 2017 Return: Fri May 5 2017 Trip spans 4 days
Major Airline
Major Airline
ONT
9:30a
IAD
5:19a
19h 49m
1 stop
IAD
9:30a
ONT
4:52a
19h 22m
1 stop
Depart: Sat Apr 29 2017 Return: Wed May 10 2017 Trip spans 12 days
United
United
ONT
3:15p
IAD
12:20a
9h 05m
1 stop
IAD
6:45a
ONT
5:40p
10h 55m
1 stop
Depart: Mon May 1 2017 Return: Mon May 8 2017 Trip spans 8 days
American Airlines
American Airlines
ONT
9:15p
IAD
3:58a
6h 43m
1 stop
IAD
2:55p
ONT
10:20p
7h 25m
1 stop
Depart: Tue Apr 11 2017 Return: Mon Apr 17 2017 Trip spans 7 days
Major Airline
Major Airline
ONT
9:30a
IAD
5:19a
19h 49m
1 stop
IAD
9:30a
ONT
4:52a
19h 22m
1 stop
Depart: Sat May 27 2017 Return: Wed May 31 2017 Trip spans 5 days
United
United
ONT
12:55p
IAD
11:17p
10h 22m
1 stop
IAD
1:15p
ONT
11:11p
9h 56m
1 stop
Depart: Fri May 5 2017 Return: Mon May 8 2017 Trip spans 4 days
American Airlines
American Airlines
ONT
9:15p
IAD
3:58a
6h 43m
1 stop
IAD
2:55p
ONT
10:20p
7h 25m
1 stop
Depart: Mon May 22 2017 Return: Tue May 23 2017 Trip spans 2 days
United
United
ONT
12:55p
IAD
11:10p
10h 15m
1 stop
IAD
4:46a
ONT
3:21p
10h 35m
1 stop
Depart: Thu May 11 2017 Return: Wed Jun 7 2017 Trip spans 28 days
Major Airline
Major Airline
ONT
10:20p
IAD
5:24a
31h 04m
1 stop
IAD
9:20a
ONT
5:16p
31h 56m
1 stop
Depart: Mon Apr 10 2017 Return: Mon Apr 17 2017 Trip spans 8 days
American Airlines
American Airlines
ONT
9:15p
IAD
3:58a
6h 43m
1 stop
IAD
2:55p
ONT
10:18p
7h 23m
1 stop
Depart: Mon Apr 24 2017 Return: Wed Apr 26 2017 Trip spans 3 days
United
United
ONT
3:15p
IAD
11:37p
8h 22m
1 stop
IAD
4:21a
ONT
3:21p
11h 00m
1 stop
Depart: Fri May 12 2017 Return: Tue May 16 2017 Trip spans 5 days
United
United
ONT
8:40a
IAD
5:57p
9h 17m
1 stop
IAD
2:40a
ONT
11:06a
8h 26m
1 stop
Depart: Fri May 26 2017 Return: Tue Jun 6 2017 Trip spans 12 days
American Airlines
American Airlines
ONT
9:15p
IAD
3:58a
6h 43m
1 stop
IAD
3:05p
ONT
10:06p
7h 01m
1 stop
Depart: Wed Jul 5 2017 Return: Tue Jul 25 2017 Trip spans 21 days
Major Airline
Major Airline
ONT
10:20p
IAD
5:17a
30h 57m
1 stop
IAD
9:20a
ONT
5:18p
31h 58m
1 stop
Depart: Wed May 17 2017 Return: Thu May 18 2017 Trip spans 2 days
United
United
ONT
8:40a
IAD
4:10p
7h 30m
1 stop
IAD
2:40a
ONT
11:06a
8h 26m
1 stop
Depart: Mon Apr 17 2017 Return: Sat Apr 22 2017 Trip spans 6 days
American Airlines
American Airlines
ONT
9:15p
IAD
3:58a
6h 43m
1 stop
IAD
3:17a
ONT
12:38p
9h 21m
1 stop
Depart: Thu May 18 2017 Return: Tue May 23 2017 Trip spans 6 days
United
United
ONT
8:40a
IAD
5:57p
9h 17m
1 stop
IAD
4:46a
ONT
3:21p
10h 35m
1 stop
Depart: Thu May 25 2017 Return: Wed May 31 2017 Trip spans 7 days
United
United
ONT
8:40a
IAD
5:57p
9h 17m
1 stop
IAD
2:40a
ONT
11:06a
8h 26m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

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Airports
Origin

Ontario
$359
Destination

Washington
$359