Find Deals on Flights from Washington to Ontario (WAS - ONT)

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 Washington to Ontario

(Round-trip)
Depart: Tue Apr 18 2017 Return: Fri Apr 21 2017 Trip spans 4 days
Major Airline
Major Airline
IAD
9:30a
ONT
4:53a
19h 23m
1 stop
ONT
9:30a
IAD
5:19a
19h 49m
1 stop
Depart: Wed Apr 19 2017 Return: Tue Apr 25 2017 Trip spans 7 days
United
United
IAD
12:10p
ONT
7:11p
7h 01m
1 stop
ONT
9:25a
IAD
3:57p
6h 32m
1 stop
Depart: Sat Apr 22 2017 Return: Sat Apr 29 2017 Trip spans 8 days
American Airlines
American Airlines
DCA
12:30p
ONT
8:00p
7h 30m
1 stop
ONT
6:55a
DCA
3:52p
8h 57m
1 stop
Depart: Tue Apr 25 2017 Return: Sat Apr 29 2017 Trip spans 5 days
American Airlines
American Airlines
DCA
1:30a
ONT
8:59a
7h 29m
1 stop
ONT
6:55a
DCA
1:40p
6h 45m
1 stop
Depart: Wed May 10 2017 Return: Sat May 13 2017 Trip spans 4 days
United
United
DCA
4:33a
ONT
3:21p
10h 48m
1 stop
ONT
5:07a
DCA
2:58p
9h 51m
1 stop
Depart: Mon May 29 2017 Return: Tue Jun 6 2017 Trip spans 9 days
Major Airline
Major Airline
DCA
10:50a
ONT
5:15p
30h 25m
2 stops
ONT
11:50a
DCA
6:50a
19h 00m
2 stops
Depart: Wed Apr 26 2017 Return: Fri Apr 28 2017 Trip spans 3 days
American Airlines
American Airlines
DCA
1:30a
ONT
8:59a
7h 29m
1 stop
ONT
9:15p
DCA
3:52a
6h 37m
1 stop
Depart: Wed May 17 2017 Return: Sat May 20 2017 Trip spans 4 days
United
United
IAD
2:40a
ONT
11:06a
8h 26m
1 stop
ONT
8:40a
IAD
4:10p
7h 30m
1 stop
Depart: Sun Jun 4 2017 Return: Mon Jun 12 2017 Trip spans 9 days
Major Airline
Major Airline
DCA
12:00a
ONT
5:16p
17h 16m
1 stop
ONT
9:15a
DCA
10:53a
25h 38m
1 stop
Depart: Sat Apr 29 2017 Return: Tue May 2 2017 Trip spans 4 days
American Airlines
American Airlines
DCA
3:00a
ONT
10:41a
7h 41m
1 stop
ONT
10:30a
DCA
5:09p
6h 39m
1 stop
Depart: Tue May 23 2017 Return: Tue Jun 13 2017 Trip spans 22 days
United
United
IAD
2:40a
ONT
11:06a
8h 26m
1 stop
ONT
6:40a
IAD
4:20p
9h 40m
1 stop
Depart: Wed May 24 2017 Return: Tue May 30 2017 Trip spans 7 days
Major Airline
Major Airline
DCA
12:00a
ONT
11:30a
11h 30m
1 stop
ONT
12:45p
DCA
6:48a
18h 03m
1 stop
Depart: Tue May 2 2017 Return: Tue May 9 2017 Trip spans 8 days
American Airlines
American Airlines
DCA
12:59p
ONT
8:45p
7h 46m
1 stop
ONT
10:30a
DCA
5:09p
6h 39m
1 stop
Depart: Wed May 31 2017 Return: Tue Jun 13 2017 Trip spans 14 days
United
United
IAD
6:45a
ONT
5:40p
10h 55m
1 stop
ONT
8:45a
IAD
4:20p
7h 35m
1 stop
Depart: Wed May 3 2017 Return: Fri May 5 2017 Trip spans 3 days
American Airlines
American Airlines
DCA
1:30a
ONT
8:59a
7h 29m
1 stop
ONT
9:15p
DCA
3:52a
6h 37m
1 stop
Depart: Sat Jun 3 2017 Return: Sat Jun 10 2017 Trip spans 8 days
United
United
IAD
2:55p
ONT
11:11p
8h 16m
1 stop
ONT
8:45a
IAD
5:31p
8h 46m
1 stop
Depart: Fri Sep 1 2017 Return: Sun Sep 3 2017 Trip spans 3 days
Major Airline
Major Airline
DCA
9:10a
ONT
5:28a
20h 18m
1 stop
ONT
10:20p
DCA
10:59a
12h 39m
1 stop
Depart: Sat May 6 2017 Return: Tue May 9 2017 Trip spans 4 days
American Airlines
American Airlines
DCA
3:00a
ONT
10:41a
7h 41m
1 stop
ONT
10:30a
DCA
5:09p
6h 39m
1 stop
Depart: Tue Jun 6 2017 Return: Sat Jun 10 2017 Trip spans 5 days
United
United
IAD
10:35a
ONT
7:34p
8h 59m
1 stop
ONT
8:45a
IAD
5:31p
8h 46m
1 stop
Depart: Wed Jun 7 2017 Return: Sat Jun 10 2017 Trip spans 4 days
United
United
IAD
1:15p
ONT
11:11p
9h 56m
1 stop
ONT
8:45a
IAD
5:31p
8h 46m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

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

Washington
only $354
only $396
Destination

Ontario
$354