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
Students
under 26
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: Fri Feb 10 2017 Return: Tue Feb 14 2017 Trip spans 5 days
Major Airline
Major Airline
DCA
7:15a
ONT
1:48a
18h 33m
1 stop
ONT
10:59a
DCA
4:53a
17h 54m
1 stop
Depart: Tue Jan 10 2017 Return: Sat Jan 14 2017 Trip spans 5 days
American Airlines
American Airlines
DCA
12:40a
ONT
8:09a
7h 29m
1 stop
ONT
1:09a
DCA
9:14a
8h 05m
1 stop
Depart: Wed Jan 18 2017 Return: Tue Jan 24 2017 Trip spans 7 days
United
United
IAD
10:45a
ONT
6:48p
8h 03m
1 stop
ONT
12:38a
IAD
7:13a
6h 35m
1 stop
Depart: Sun Jan 8 2017 Return: Sat Jan 14 2017 Trip spans 7 days
Delta
Delta
DCA
11:45a
ONT
9:04p
9h 19m
1 stop
ONT
1:00a
DCA
7:57a
6h 57m
1 stop
Depart: Wed Jan 11 2017 Return: Sat Jan 21 2017 Trip spans 11 days
American Airlines
American Airlines
DCA
6:40a
ONT
4:12p
9h 32m
1 stop
ONT
2:30p
DCA
11:02p
8h 32m
1 stop
Depart: Sun Jan 15 2017 Return: Mon Jan 23 2017 Trip spans 9 days
Major Airline
Major Airline
DCA
8:55a
ONT
2:58a
18h 03m
2 stops
ONT
10:59a
DCA
4:54a
17h 55m
2 stops
Depart: Sat Feb 4 2017 Return: Wed Feb 8 2017 Trip spans 5 days
United
United
IAD
3:15a
ONT
10:43a
7h 28m
1 stop
ONT
12:38a
IAD
7:13a
6h 35m
1 stop
Depart: Mon May 15 2017 Return: Thu May 18 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
IAD
1:30p
ONT
9:15p
31h 45m
1 stop
ONT
2:20a
IAD
9:24a
31h 04m
1 stop
Depart: Sat Jan 14 2017 Return: Sat Jan 21 2017 Trip spans 8 days
American Airlines
American Airlines
DCA
12:00p
ONT
7:39p
7h 39m
1 stop
ONT
2:30p
DCA
11:02p
8h 32m
1 stop
Depart: Tue Feb 14 2017 Return: Wed Feb 15 2017 Trip spans 2 days
United
United
IAD
3:15a
ONT
10:44a
7h 29m
1 stop
ONT
12:38a
IAD
7:13a
6h 35m
1 stop
Depart: Fri Jan 20 2017 Return: Tue Jan 24 2017 Trip spans 5 days
Major Airline
Major Airline
DCA
7:15a
ONT
1:48a
18h 33m
2 stops
ONT
10:59a
DCA
4:54a
17h 55m
2 stops
Depart: Tue Jan 17 2017 Return: Sat Jan 28 2017 Trip spans 12 days
American Airlines
American Airlines
IAD
10:08a
ONT
6:13p
8h 05m
1 stop
ONT
3:25a
IAD
10:06a
6h 41m
1 stop
Depart: Sat Jan 28 2017 Return: Wed Feb 1 2017 Trip spans 5 days
Major Airline
Major Airline
IAD
9:00a
ONT
2:58a
17h 58m
1 stop
ONT
1:00a
IAD
4:47a
27h 47m
1 stop
Depart: Mon Jan 16 2017 Return: Tue Jan 24 2017 Trip spans 9 days
United
United
IAD
3:15a
ONT
10:44a
7h 29m
1 stop
ONT
12:38a
IAD
7:13a
6h 35m
1 stop
Depart: Tue Jan 31 2017 Return: Wed Feb 1 2017 Trip spans 2 days
American Airlines
American Airlines
DCA
2:00a
ONT
9:46a
7h 46m
1 stop
ONT
9:24a
DCA
3:57p
6h 33m
1 stop
Depart: Fri Jan 13 2017 Return: Sun Jan 22 2017 Trip spans 10 days
Major Airline
Major Airline
DCA
10:00p
ONT
10:24a
12h 24m
2 stops
ONT
8:15a
DCA
8:57a
24h 42m
2 stops
Depart: Thu Jan 19 2017 Return: Wed Jan 25 2017 Trip spans 7 days
United
United
IAD
11:14a
ONT
6:15p
7h 01m
1 stop
ONT
12:38a
IAD
7:13a
6h 35m
1 stop
Depart: Wed Feb 1 2017 Return: Tue Feb 7 2017 Trip spans 7 days
American Airlines
American Airlines
DCA
12:40a
ONT
8:09a
7h 29m
1 stop
ONT
9:24a
DCA
3:57p
6h 33m
1 stop
Depart: Sun Feb 12 2017 Return: Tue Feb 21 2017 Trip spans 10 days
United
United
IAD
11:14a
ONT
6:25p
7h 11m
1 stop
ONT
8:33a
IAD
2:48p
6h 15m
1 stop
Depart: Fri Jan 27 2017 Return: Wed Feb 1 2017 Trip spans 6 days
Major Airline
Major Airline
IAD
9:00a
ONT
2:58a
17h 58m
2 stops
ONT
1:00a
IAD
4:47a
27h 47m
2 stops
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Here's why:

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.

If you have more questions or if you have a bad price to report to us,
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Airports
Origin

Washington
only $294
only $284
Destination

Ontario
$284