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

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 Denver International

(Round-trip)
Depart: Sat Jun 10 2017 Return: Tue Jun 13 2017 Trip spans 4 days
United
United
ONT
1:28a
DEN
3:39a
2h 11m
nonstop
DEN
3:16p
ONT
5:31p
2h 15m
nonstop
Depart: Fri Apr 21 2017 Return: Tue Apr 25 2017 Trip spans 5 days
Major Airline
Major Airline
ONT
10:20p
DEN
2:12p
15h 52m
1 stop
DEN
11:00p
ONT
3:14p
16h 14m
1 stop
Depart: Sat Apr 15 2017 Return: Tue Apr 18 2017 Trip spans 4 days
American Airlines
American Airlines
ONT
2:20a
DEN
6:30a
4h 10m
1 stop
DEN
3:45a
ONT
8:41a
4h 56m
1 stop
Depart: Sun Apr 30 2017 Return: Wed May 3 2017 Trip spans 4 days
Delta
Delta
ONT
2:00a
DEN
7:32a
5h 32m
1 stop
DEN
2:10a
ONT
6:31a
4h 21m
1 stop
Depart: Thu May 11 2017 Return: Sun May 14 2017 Trip spans 4 days
Southwest
Southwest
ONT
4:15p
DEN
7:40p
3h 25m
1 stop
DEN
6:25p
ONT
8:40p
2h 15m
nonstop
Depart: Sat Apr 22 2017 Return: Wed Apr 26 2017 Trip spans 5 days
United
United
ONT
1:40a
DEN
3:56a
2h 16m
nonstop
DEN
10:09a
ONT
5:31p
7h 22m
1 stop
Depart: Tue Apr 18 2017 Return: Wed Apr 19 2017 Trip spans 2 days
American Airlines
American Airlines
ONT
8:45a
DEN
12:54p
4h 09m
1 stop
DEN
8:15a
ONT
12:36p
4h 21m
1 stop
Depart: Mon May 15 2017 Return: Tue May 16 2017 Trip spans 2 days
Major Airline
Major Airline
ONT
10:20p
DEN
4:48a
6h 28m
1 stop
DEN
12:25p
ONT
3:15p
26h 50m
1 stop
Depart: Sat May 6 2017 Return: Tue May 9 2017 Trip spans 4 days
United
United
ONT
1:35a
DEN
3:55a
2h 20m
nonstop
DEN
10:10a
ONT
5:36p
7h 26m
1 stop
Depart: Sat Apr 8 2017 Return: Tue Apr 11 2017 Trip spans 4 days
Delta
Delta
ONT
2:00a
DEN
7:32a
5h 32m
1 stop
DEN
1:35p
ONT
7:49p
6h 14m
1 stop
Depart: Wed Apr 19 2017 Return: Sat Apr 22 2017 Trip spans 4 days
American Airlines
American Airlines
ONT
8:45a
DEN
12:54p
4h 09m
1 stop
DEN
1:55a
ONT
6:01a
4h 06m
1 stop
Depart: Mon Apr 24 2017 Return: Wed Apr 26 2017 Trip spans 3 days
Major Airline
Major Airline
ONT
10:20p
DEN
2:12p
15h 52m
1 stop
DEN
2:50a
ONT
3:14p
12h 24m
1 stop
Depart: Tue Sep 26 2017 Return: Sat Oct 7 2017 Trip spans 12 days
United
United
ONT
9:15a
DEN
11:20a
2h 05m
nonstop
DEN
11:15a
ONT
4:13p
4h 58m
1 stop
Depart: Tue May 2 2017 Return: Tue May 9 2017 Trip spans 8 days
American Airlines
American Airlines
ONT
8:45a
DEN
12:54p
4h 09m
1 stop
DEN
11:00a
ONT
3:26p
4h 26m
1 stop
Depart: Mon May 1 2017 Return: Thu May 4 2017 Trip spans 4 days
Major Airline
Major Airline
ONT
10:20p
DEN
4:45a
6h 25m
nonstop
DEN
12:25p
ONT
3:41p
27h 16m
nonstop
Depart: Sun Aug 6 2017 Return: Tue Aug 8 2017 Trip spans 3 days
Southwest
Southwest
ONT
2:50a
DEN
5:00a
2h 10m
nonstop
DEN
6:45p
ONT
8:55p
2h 10m
nonstop
Depart: Wed Apr 5 2017 Return: Sun Apr 9 2017 Trip spans 5 days
Delta
Delta
ONT
2:00a
DEN
6:14a
4h 14m
1 stop
DEN
2:10a
ONT
6:47a
4h 37m
1 stop
Depart: Sat Sep 30 2017 Return: Wed Oct 4 2017 Trip spans 5 days
United
United
ONT
2:00a
DEN
4:11a
2h 11m
nonstop
DEN
11:15a
ONT
4:13p
4h 58m
1 stop
Depart: Wed May 3 2017 Return: Sat May 6 2017 Trip spans 4 days
American Airlines
American Airlines
ONT
8:45a
DEN
12:54p
4h 09m
1 stop
DEN
4:00a
ONT
8:41a
4h 41m
1 stop
Depart: Wed May 17 2017 Return: Fri May 19 2017 Trip spans 3 days
Major Airline
Major Airline
ONT
10:20p
DEN
10:28a
12h 08m
1 stop
DEN
11:00p
ONT
1:10p
14h 10m
1 stop
Direct flights ONT to DEN on United
Flight # Depart ONT Arrive DEN Sun Mon Tue Wed Thu Fri Sat Valid Between
1852 5:35 am 8:55 am Apr 2 - Apr 3
1852 5:40 am 8:56 am Apr 4 - May 4
1635 1:25 pm 4:43 pm Apr 4 - Apr 25
1635 1:25 pm 4:43 pm Apr 27 - May 4
1635 1:30 pm 4:48 pm Mar 22 - Apr 3
1635 1:35 pm 4:52 pm Apr 26 - Apr 26
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Airports
Origin

Ontario
$231
Destination

Denver
$231
Airlines Airline reviews

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

Overall
7.3
Boarding
7.2
Crew
7.5
Comfort
7.1
Food
6.4
Entertainment
6.1