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

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Ontario to Denver International

(Round-trip)
Depart: Thu Jan 8 2015 Return: Mon Jan 12 2015 Trip spans 5 days
US Airways
US Airways
ONT
7:40a
DEN
11:39a
3h 59m
1 stop
DEN
7:20a
ONT
2:21p
7h 01m
1 stop
Depart: Tue Jan 13 2015 Return: Thu Jan 15 2015 Trip spans 3 days
US Airways
US Airways
ONT
7:40a
DEN
11:39a
3h 59m
1 stop
DEN
12:45a
ONT
5:04a
4h 19m
1 stop
Depart: Wed Jan 14 2015 Return: Thu Jan 15 2015 Trip spans 2 days
US Airways
US Airways
ONT
7:40a
DEN
11:39a
3h 59m
1 stop
DEN
12:45a
ONT
7:34a
6h 49m
1 stop
Depart: Thu Jan 15 2015 Return: Sat Jan 17 2015 Trip spans 3 days
US Airways
US Airways
ONT
7:40a
DEN
11:39a
3h 59m
1 stop
DEN
1:20p
ONT
5:11p
3h 51m
1 stop
Depart: Tue Jan 20 2015 Return: Wed Jan 21 2015 Trip spans 2 days
US Airways
US Airways
ONT
7:40a
DEN
11:39a
3h 59m
1 stop
DEN
12:45a
ONT
7:34a
6h 49m
1 stop
Depart: Wed Jan 21 2015 Return: Wed Jan 28 2015 Trip spans 8 days
US Airways
US Airways
ONT
7:40a
DEN
11:39a
3h 59m
1 stop
DEN
12:45a
ONT
5:04a
4h 19m
1 stop
Depart: Mon Jan 26 2015 Return: Wed Jan 28 2015 Trip spans 3 days
US Airways
US Airways
ONT
7:40a
DEN
11:39a
3h 59m
1 stop
DEN
12:45a
ONT
5:04a
4h 19m
1 stop
Depart: Thu Feb 5 2015 Return: Sun Feb 8 2015 Trip spans 4 days
US Airways
US Airways
ONT
7:40a
DEN
11:39a
3h 59m
1 stop
DEN
1:20p
ONT
5:11p
3h 51m
1 stop
Depart: Wed Feb 11 2015 Return: Sun Feb 15 2015 Trip spans 5 days
US Airways
US Airways
ONT
7:40a
DEN
11:39a
3h 59m
1 stop
DEN
12:45a
ONT
5:04a
4h 19m
1 stop
Depart: Sat Feb 14 2015 Return: Sat Feb 21 2015 Trip spans 8 days
US Airways
US Airways
ONT
7:40a
DEN
11:39a
3h 59m
1 stop
DEN
12:45a
ONT
5:04a
4h 19m
1 stop
Depart: Wed Feb 18 2015 Return: Fri Feb 20 2015 Trip spans 3 days
US Airways
US Airways
ONT
7:40a
DEN
11:39a
3h 59m
1 stop
DEN
12:45a
ONT
5:04a
4h 19m
1 stop
Depart: Fri Jan 9 2015 Return: Sun Jan 11 2015 Trip spans 3 days
US Airways
US Airways
ONT
2:25p
DEN
6:35p
4h 10m
1 stop
DEN
3:05a
ONT
7:34a
4h 29m
1 stop
Depart: Sat Jan 10 2015 Return: Sun Jan 11 2015 Trip spans 2 days
US Airways
US Airways
ONT
1:30a
DEN
5:32a
4h 02m
1 stop
DEN
9:50a
ONT
2:46p
4h 56m
1 stop
Depart: Mon Jan 12 2015 Return: Tue Jan 13 2015 Trip spans 2 days
US Airways
US Airways
ONT
2:25p
DEN
6:35p
4h 10m
1 stop
DEN
9:50a
ONT
2:21p
4h 31m
1 stop
Depart: Fri Jan 16 2015 Return: Sat Jan 17 2015 Trip spans 2 days
US Airways
US Airways
ONT
2:25p
DEN
6:35p
4h 10m
1 stop
DEN
12:45a
ONT
7:34a
6h 49m
1 stop
Depart: Sat Jan 17 2015 Return: Sun Jan 18 2015 Trip spans 2 days
US Airways
US Airways
ONT
1:30a
DEN
5:32a
4h 02m
1 stop
DEN
3:05a
ONT
7:34a
4h 29m
1 stop
Depart: Tue Feb 24 2015 Return: Tue Mar 3 2015 Trip spans 8 days
United
United
ONT
8:23a
DEN
10:40a
2h 17m
nonstop
DEN
2:30p
ONT
4:52p
2h 22m
nonstop
Depart: Tue Jan 6 2015 Return: Thu Jan 8 2015 Trip spans 3 days
Multiple Airlines
Multiple Airlines
ONT
12:25p
DEN
4:21p
3h 56m
1 stop
DEN
12:45a
ONT
5:04a
4h 19m
1 stop
Depart: Mon Feb 2 2015 Return: Wed Feb 4 2015 Trip spans 3 days
Delta
Delta
ONT
1:15a
DEN
6:25a
5h 10m
1 stop
DEN
1:00a
ONT
5:32a
4h 32m
1 stop
Depart: Mon Dec 29 2014 Return: Tue Jan 6 2015 Trip spans 9 days
American Airlines
American Airlines
ONT
7:40a
DEN
1:54p
6h 14m
1 stop
DEN
12:45a
ONT
5:04a
4h 19m
1 stop
Change your search
Direct flights ONT to DEN on United
Flight # Depart ONT Arrive DEN Sun Mon Tue Wed Thu Fri Sat Valid Between
5547 5:59 am 9:20 am Dec 20 - Jan 3
5547 5:59 am 9:20 am Dec 19 - Jan 5
5547 6:00 am 9:20 am Jan 6 - Mar 4
5547 6:00 am 9:20 am Jan 10 - Feb 28
5575 1:15 pm 4:32 pm Jan 6 - Feb 10
5583 1:15 pm 4:28 pm Jan 7 - Feb 11
6281 1:15 pm 4:32 pm Jan 12 - Feb 9
5164 1:26 pm 4:44 pm Jan 3 - Jan 3
5164 1:26 pm 4:44 pm Jan 1 - Jan 1
5583 1:26 pm 4:40 pm Dec 29 - Jan 5
6281 1:26 pm 4:40 pm Dec 30 - Jan 2
6422 1:26 pm 4:40 pm Dec 26 - Dec 26
5164 1:27 pm 4:45 pm Dec 27 - Dec 27
5575 1:27 pm 4:45 pm Jan 4 - Jan 4
6422 1:27 pm 4:45 pm Dec 28 - Dec 28
Airports
Origin

Ontario
$175
Destination

Denver
$175