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

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

Book cheap flights from Denver International to Ontario

(Round-trip)
Depart: Sat Jan 31 2015 Return: Wed Feb 4 2015 Trip spans 5 days
United
United
DEN
3:00a
ONT
8:00a
5h 00m
1 stop
ONT
8:15a
DEN
10:28a
2h 13m
nonstop
Depart: Thu Jan 15 2015 Return: Sat Jan 24 2015 Trip spans 10 days
United
United
DEN
1:00a
ONT
5:35a
4h 35m
1 stop
ONT
7:30a
DEN
1:24p
5h 54m
1 stop
Depart: Thu Feb 5 2015 Return: Mon Feb 9 2015 Trip spans 5 days
United
United
DEN
1:00a
ONT
5:35a
4h 35m
1 stop
ONT
7:30a
DEN
3:11p
7h 41m
1 stop
Depart: Fri Jan 30 2015 Return: Tue Feb 3 2015 Trip spans 5 days
United
United
DEN
1:00a
ONT
5:35a
4h 35m
1 stop
ONT
8:15a
DEN
10:32a
2h 17m
nonstop
Depart: Tue Jan 13 2015 Return: Thu Jan 15 2015 Trip spans 3 days
US Airways
US Airways
DEN
3:05a
ONT
7:34a
4h 29m
1 stop
ONT
7:40a
DEN
11:39a
3h 59m
1 stop
Depart: Fri Jan 23 2015 Return: Tue Jan 27 2015 Trip spans 5 days
US Airways
US Airways
DEN
12:45a
ONT
5:04a
4h 19m
1 stop
ONT
7:40a
DEN
11:39a
3h 59m
1 stop
Depart: Wed Feb 4 2015 Return: Tue Feb 10 2015 Trip spans 7 days
US Airways
US Airways
DEN
1:20p
ONT
5:11p
3h 51m
1 stop
ONT
7:40a
DEN
11:39a
3h 59m
1 stop
Depart: Wed Jan 14 2015 Return: Mon Jan 19 2015 Trip spans 6 days
US Airways
US Airways
DEN
3:05a
ONT
7:34a
4h 29m
1 stop
ONT
2:25p
DEN
6:35p
4h 10m
1 stop
Depart: Sat Jan 17 2015 Return: Sun Jan 18 2015 Trip spans 2 days
United
United
DEN
1:00a
ONT
5:35a
4h 35m
1 stop
ONT
7:30a
DEN
1:15p
5h 45m
1 stop
Depart: Wed Jan 21 2015 Return: Thu Jan 22 2015 Trip spans 2 days
US Airways
US Airways
DEN
3:05a
ONT
7:34a
4h 29m
1 stop
ONT
2:25p
DEN
6:35p
4h 10m
1 stop
Depart: Thu Jan 22 2015 Return: Sun Jan 25 2015 Trip spans 4 days
US Airways
US Airways
DEN
12:45a
ONT
7:34a
6h 49m
1 stop
ONT
2:25p
DEN
6:35p
4h 10m
1 stop
Depart: Sun Jan 25 2015 Return: Wed Jan 28 2015 Trip spans 4 days
US Airways
US Airways
DEN
3:05a
ONT
7:34a
4h 29m
1 stop
ONT
2:25p
DEN
6:35p
4h 10m
1 stop
Depart: Mon Feb 2 2015 Return: Sun Feb 8 2015 Trip spans 7 days
United
United
DEN
2:08p
ONT
7:55p
5h 47m
1 stop
ONT
9:51a
DEN
3:11p
5h 20m
1 stop
Depart: Fri Feb 6 2015 Return: Mon Feb 9 2015 Trip spans 4 days
US Airways
US Airways
DEN
12:45a
ONT
5:04a
4h 19m
1 stop
ONT
2:25p
DEN
6:35p
4h 10m
1 stop
Depart: Wed Feb 18 2015 Return: Mon Feb 23 2015 Trip spans 6 days
US Airways
US Airways
DEN
12:45a
ONT
7:34a
6h 49m
1 stop
ONT
2:25p
DEN
6:35p
4h 10m
1 stop
Depart: Wed Jan 7 2015 Return: Wed Jan 14 2015 Trip spans 8 days
United
United
DEN
1:00a
ONT
8:00a
7h 00m
1 stop
ONT
8:15a
DEN
10:28a
2h 13m
nonstop
Depart: Thu Jan 8 2015 Return: Tue Jan 13 2015 Trip spans 6 days
United
United
DEN
10:40a
ONT
3:30p
4h 50m
1 stop
ONT
12:30a
DEN
5:40a
5h 10m
1 stop
Depart: Sat May 30 2015 Return: Tue Jun 2 2015 Trip spans 4 days
US Airways
US Airways
DEN
2:00a
ONT
6:03a
4h 03m
1 stop
ONT
3:30p
DEN
7:36p
4h 06m
1 stop
Depart: Tue Feb 3 2015 Return: Mon Feb 9 2015 Trip spans 7 days
Delta
Delta
DEN
1:55p
ONT
5:49p
3h 54m
1 stop
ONT
1:15a
DEN
6:25a
5h 10m
1 stop
Depart: Thu Jan 1 2015 Return: Tue Jan 6 2015 Trip spans 6 days
Multiple Airlines
Multiple Airlines
DEN
4:00p
ONT
7:57p
3h 57m
1 stop
ONT
12:25p
DEN
4:21p
3h 56m
1 stop
Change your search
Direct flights DEN to ONT on United
Flight # Depart DEN Arrive ONT Sun Mon Tue Wed Thu Fri Sat Valid Between
6281 11:22 am 12:40 pm Jan 7 - Feb 11
6281 11:22 am 12:44 pm Jan 6 - Feb 10
6477 11:22 am 12:44 pm Jan 12 - Jan 12
6477 11:22 am 12:44 pm Jan 19 - Jan 26
5518 11:31 am 12:51 pm Dec 30 - Jan 2
5518 11:31 am 12:55 pm Jan 1 - Jan 1
6281 11:31 am 12:51 pm Jan 5 - Jan 5
6477 11:31 am 12:55 pm Jan 3 - Jan 3
6281 11:33 am 12:57 pm Jan 4 - Jan 4
5208 6:45 pm 8:07 pm Jan 22 - Jan 23
5518 6:45 pm 8:07 pm Jan 6 - Jan 21
5518 6:45 pm 8:07 pm Jan 25 - Feb 8
5518 7:55 pm 9:19 pm Jan 4 - Jan 4
6195 7:55 pm 9:19 pm Jan 5 - Jan 5
6195 7:55 pm 9:19 pm Dec 30 - Jan 2
6375 7:55 pm 9:19 pm Dec 27 - Jan 3
Airports
Origin

Denver
$151
Destination

Ontario
$151