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 Mar 25 2017 Return: Fri Mar 31 2017 Trip spans 7 days
Major Airline
Major Airline
ONT
3:45a
DEN
2:09p
10h 24m
nonstop
DEN
11:00p
ONT
1:08p
14h 08m
nonstop
Depart: Wed Mar 22 2017 Return: Tue Mar 28 2017 Trip spans 7 days
United
United
ONT
1:35a
DEN
3:55a
2h 20m
nonstop
DEN
10:15a
ONT
4:31p
6h 16m
1 stop
Depart: Tue Mar 14 2017 Return: Wed Mar 15 2017 Trip spans 2 days
American Airlines
American Airlines
ONT
8:45a
DEN
12:48p
4h 03m
1 stop
DEN
1:40a
ONT
8:48a
7h 08m
1 stop
Depart: Tue Apr 18 2017 Return: Sat Apr 22 2017 Trip spans 5 days
Delta
Delta
ONT
2:00a
DEN
6:14a
4h 14m
1 stop
DEN
1:35p
ONT
6:02p
4h 27m
1 stop
Depart: Wed Mar 29 2017 Return: Fri Mar 31 2017 Trip spans 3 days
Major Airline
Major Airline
ONT
3:45a
DEN
10:20a
6h 35m
1 stop
DEN
11:00p
ONT
1:08p
14h 08m
2 stops
Depart: Tue Jun 13 2017 Return: Wed Jun 14 2017 Trip spans 2 days
United
United
ONT
2:00a
DEN
4:11a
2h 11m
nonstop
DEN
2:45p
ONT
5:00p
2h 15m
nonstop
Depart: Sat Mar 18 2017 Return: Wed Mar 22 2017 Trip spans 5 days
American Airlines
American Airlines
ONT
2:15a
DEN
6:30a
4h 15m
1 stop
DEN
1:40a
ONT
6:00a
4h 20m
1 stop
Depart: Sat Apr 8 2017 Return: Fri Apr 14 2017 Trip spans 7 days
Delta
Delta
ONT
2:00a
DEN
7:32a
5h 32m
1 stop
DEN
1:35p
ONT
6:03p
4h 28m
1 stop
Depart: Sat May 13 2017 Return: Tue May 16 2017 Trip spans 4 days
American Airlines
American Airlines
ONT
2:20a
DEN
6:27a
4h 07m
1 stop
DEN
4:00a
ONT
8:41a
4h 41m
1 stop
Depart: Sun Mar 19 2017 Return: Sat Apr 1 2017 Trip spans 14 days
United
United
ONT
1:35a
DEN
3:54a
2h 19m
nonstop
DEN
3:09p
ONT
5:33p
2h 24m
nonstop
Depart: Mon May 8 2017 Return: Tue May 9 2017 Trip spans 2 days
Major Airline
Major Airline
ONT
3:45a
DEN
10:28a
6h 43m
1 stop
DEN
12:25p
ONT
9:30a
21h 05m
1 stop
Depart: Fri Apr 21 2017 Return: Sat Apr 22 2017 Trip spans 2 days
Delta
Delta
ONT
2:00a
DEN
6:14a
4h 14m
1 stop
DEN
1:35p
ONT
6:02p
4h 27m
1 stop
Depart: Wed Mar 15 2017 Return: Wed Mar 22 2017 Trip spans 8 days
American Airlines
American Airlines
ONT
3:35p
DEN
7:42p
4h 07m
1 stop
DEN
1:40a
ONT
6:00a
4h 20m
1 stop
Depart: Fri Mar 24 2017 Return: Sat Apr 1 2017 Trip spans 9 days
United
United
ONT
1:35a
DEN
3:55a
2h 20m
nonstop
DEN
3:09p
ONT
5:33p
2h 24m
nonstop
Depart: Sun Apr 23 2017 Return: Wed Apr 26 2017 Trip spans 4 days
Delta
Delta
ONT
2:00a
DEN
7:32a
5h 32m
1 stop
DEN
2:10a
ONT
6:47a
4h 37m
1 stop
Depart: Tue Mar 28 2017 Return: Wed Mar 29 2017 Trip spans 2 days
American Airlines
American Airlines
ONT
3:35p
DEN
7:42p
4h 07m
1 stop
DEN
1:40a
ONT
6:00a
4h 20m
1 stop
Depart: Tue May 30 2017 Return: Sun Jun 4 2017 Trip spans 6 days
Major Airline
Major Airline
ONT
10:20p
DEN
4:48a
6h 28m
1 stop
DEN
3:00a
ONT
9:17a
6h 17m
1 stop
Depart: Wed Apr 5 2017 Return: Tue Apr 11 2017 Trip spans 7 days
United
United
ONT
6:45a
DEN
11:34a
4h 49m
1 stop
DEN
11:41a
ONT
5:31p
5h 50m
1 stop
Depart: Sat Mar 11 2017 Return: Tue Mar 14 2017 Trip spans 3 days
Delta
Delta
ONT
1:00a
DEN
6:30a
5h 30m
1 stop
DEN
2:05a
ONT
6:35a
4h 30m
1 stop
Depart: Tue Apr 4 2017 Return: Wed Apr 5 2017 Trip spans 2 days
American Airlines
American Airlines
ONT
3:35p
DEN
7:40p
4h 05m
1 stop
DEN
3:45a
ONT
8:41a
4h 56m
1 stop
Direct flights ONT to DEN on United
Flight # Depart ONT Arrive DEN Sun Mon Tue Wed Thu Fri Sat Valid Between
1852 5:30 am 8:55 am Mar 4 - Mar 5
1852 5:30 am 8:55 am Feb 19 - Feb 26
1852 5:30 am 8:55 am Mar 1 - Mar 8
1852 5:30 am 8:56 am Feb 27 - Mar 7
1852 5:35 am 8:54 am Mar 11 - Mar 11
1852 5:35 am 8:55 am Mar 13 - Apr 1
1852 5:35 am 8:54 am Mar 12 - Mar 19
1852 5:35 am 8:55 am Mar 9 - Mar 10
1852 5:35 am 8:54 am Mar 26 - Mar 26
1635 1:30 pm 4:51 pm Mar 8 - Mar 8
1635 1:30 pm 4:51 pm Mar 1 - Mar 1
1635 1:30 pm 4:51 pm Feb 28 - Mar 7
1635 1:30 pm 4:48 pm Mar 14 - Mar 14
1635 1:30 pm 4:48 pm Mar 9 - Mar 10
1635 1:30 pm 4:48 pm Mar 13 - Apr 3
1635 1:30 pm 4:51 pm Feb 24 - Mar 6
1635 1:30 pm 4:48 pm Mar 28 - Mar 28
1635 1:30 pm 4:48 pm Mar 21 - Mar 21
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Airports
Origin

Ontario
$229
Destination

Denver
$229
Airlines Airline reviews

14 travelers who booked a flight from Ontario to Denver rated their chosen airlines with an average of 6.7.

Overall
7.1
Boarding
7.0
Crew
7.3
Comfort
6.9
Food
6.1
Entertainment
5.9