Find Deals on Flights from Denver International to Ontario (DEN - 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 Denver International to Ontario

(Round-trip)
Depart: Sat Apr 1 2017 Return: Tue Apr 4 2017 Trip spans 4 days
United
United
DEN
3:09p
ONT
5:33p
2h 24m
nonstop
ONT
1:50a
DEN
8:20a
6h 30m
1 stop
Depart: Tue Apr 4 2017 Return: Wed Apr 5 2017 Trip spans 2 days
American Airlines
American Airlines
DEN
1:55a
ONT
6:01a
4h 06m
1 stop
ONT
8:45a
DEN
12:54p
4h 09m
1 stop
Depart: Wed May 24 2017 Return: Tue May 30 2017 Trip spans 7 days
Major Airline
Major Airline
DEN
11:00p
ONT
3:15p
16h 15m
nonstop
ONT
4:00a
DEN
10:28a
6h 28m
nonstop
Depart: Thu Mar 16 2017 Return: Tue Mar 21 2017 Trip spans 6 days
Delta
Delta
DEN
2:05a
ONT
6:35a
4h 30m
1 stop
ONT
2:00a
DEN
7:33a
5h 33m
1 stop
Depart: Sat Apr 15 2017 Return: Tue Apr 18 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
DEN
3:00a
ONT
7:14p
16h 14m
1 stop
ONT
2:20a
DEN
6:12p
15h 52m
1 stop
Depart: Sun Jun 25 2017 Return: Wed Jun 28 2017 Trip spans 4 days
Southwest
Southwest
DEN
4:25a
ONT
6:35a
2h 10m
nonstop
ONT
12:25p
DEN
2:35p
2h 10m
nonstop
Depart: Tue Apr 11 2017 Return: Wed Apr 19 2017 Trip spans 9 days
American Airlines
American Airlines
DEN
3:45a
ONT
8:41a
4h 56m
1 stop
ONT
8:45a
DEN
12:54p
4h 09m
1 stop
Depart: Tue Mar 28 2017 Return: Tue Apr 4 2017 Trip spans 8 days
United
United
DEN
1:06p
ONT
9:06p
8h 00m
1 stop
ONT
8:36a
DEN
4:24p
7h 48m
1 stop
Depart: Wed May 3 2017 Return: Sat May 6 2017 Trip spans 4 days
Major Airline
Major Airline
DEN
11:00p
ONT
9:27a
10h 27m
1 stop
ONT
3:45a
DEN
10:18a
6h 33m
1 stop
Depart: Wed Apr 12 2017 Return: Wed Apr 19 2017 Trip spans 8 days
American Airlines
American Airlines
DEN
1:55a
ONT
8:41a
6h 46m
1 stop
ONT
8:45a
DEN
12:54p
4h 09m
1 stop
Depart: Wed Mar 29 2017 Return: Wed Apr 5 2017 Trip spans 8 days
United
United
DEN
2:00a
ONT
7:11a
5h 11m
1 stop
ONT
8:36a
DEN
4:24p
7h 48m
1 stop
Depart: Sat Apr 29 2017 Return: Wed May 3 2017 Trip spans 5 days
Delta
Delta
DEN
1:35p
ONT
6:02p
4h 27m
1 stop
ONT
2:00a
DEN
7:32a
5h 32m
1 stop
Depart: Fri May 12 2017 Return: Fri May 19 2017 Trip spans 8 days
Major Airline
Major Airline
DEN
11:00p
ONT
3:15p
16h 15m
1 stop
ONT
10:20p
DEN
2:13p
15h 53m
1 stop
Depart: Fri Apr 28 2017 Return: Sun Apr 30 2017 Trip spans 3 days
Alaska Airlines
Alaska Airlines
DEN
4:25p
ONT
7:14p
26h 49m
1 stop
ONT
2:20a
DEN
4:48a
26h 28m
1 stop
Depart: Wed Mar 22 2017 Return: Tue Mar 28 2017 Trip spans 7 days
American Airlines
American Airlines
DEN
1:40a
ONT
8:48a
7h 08m
1 stop
ONT
3:35p
DEN
7:42p
4h 07m
1 stop
Depart: Wed Apr 5 2017 Return: Tue Apr 11 2017 Trip spans 7 days
United
United
DEN
11:41a
ONT
4:31p
4h 50m
1 stop
ONT
8:36a
DEN
2:15p
5h 39m
1 stop
Depart: Tue Aug 29 2017 Return: Sat Sep 2 2017 Trip spans 5 days
Delta
Delta
DEN
2:15a
ONT
6:40a
4h 25m
1 stop
ONT
2:00a
DEN
7:30a
5h 30m
1 stop
Depart: Sat Jun 3 2017 Return: Tue Jun 13 2017 Trip spans 11 days
Major Airline
Major Airline
DEN
6:50a
ONT
3:15p
8h 25m
1 stop
ONT
10:20p
DEN
4:45a
6h 25m
1 stop
Depart: Tue Apr 18 2017 Return: Wed May 10 2017 Trip spans 23 days
American Airlines
American Airlines
DEN
3:45a
ONT
8:41a
4h 56m
1 stop
ONT
8:45a
DEN
12:54p
4h 09m
1 stop
Depart: Wed Apr 19 2017 Return: Sat Apr 22 2017 Trip spans 4 days
United
United
DEN
10:09a
ONT
4:31p
6h 22m
1 stop
ONT
8:36a
DEN
2:14p
5h 38m
1 stop
Direct flights DEN to ONT on United
Flight # Depart DEN Arrive ONT Sun Mon Tue Wed Thu Fri Sat Valid Between
74 11:15 am 12:36 pm Apr 4 - Apr 12
74 11:17 am 12:40 pm Mar 6 - Mar 6
74 11:22 am 12:45 pm Mar 8 - Mar 8
74 11:25 am 12:48 pm Mar 5 - Mar 7
74 11:27 am 12:48 pm Mar 13 - Apr 3
74 11:27 am 12:48 pm Mar 9 - Mar 10
1199 6:50 pm 8:14 pm Mar 9 - Mar 9
1199 6:50 pm 8:17 pm Mar 10 - Mar 10
1199 6:50 pm 8:14 pm Mar 13 - Mar 17
1199 6:50 pm 8:15 pm Feb 26 - Mar 5
1199 6:50 pm 8:14 pm Mar 21 - Mar 21
1199 6:50 pm 8:14 pm Mar 22 - Mar 31
1199 6:50 pm 8:11 pm Apr 5 - Apr 18
1199 6:50 pm 8:11 pm Apr 4 - Apr 4
1199 6:59 pm 8:26 pm Apr 3 - Apr 3
1199 7:00 pm 8:25 pm Mar 6 - Mar 8
1199 7:00 pm 8:24 pm Mar 7 - Mar 7
1199 7:00 pm 8:24 pm Apr 1 - Apr 1
1199 7:00 pm 8:27 pm Mar 18 - Mar 18
1199 7:00 pm 8:23 pm Mar 25 - Mar 25
1199 7:09 pm 8:33 pm Mar 16 - Mar 23
1199 7:09 pm 8:33 pm Mar 30 - Mar 30
1199 7:10 pm 8:34 pm Mar 19 - Mar 19
1199 7:10 pm 8:37 pm Mar 11 - Mar 11
1199 7:10 pm 8:34 pm Mar 26 - Apr 2
1199 7:10 pm 8:34 pm Mar 12 - Mar 12
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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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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

Denver
$227
Destination

Ontario
$227
Airlines Airline reviews

11 travelers who booked a flight from Denver to Ontario rated their chosen airlines with an average of 6.9.

Overall
7.3
Boarding
6.9
Crew
7.8
Comfort
7.3
Food
6.2
Entertainment
6.2