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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: Mon May 18 2015 Return: Tue May 19 2015 Trip spans 2 days
American Airlines
American Airlines
DEN
1:45a
ONT
6:07a
4h 22m
1 stop
ONT
3:25p
DEN
7:35p
4h 10m
1 stop
Depart: Tue Jun 16 2015 Return: Wed Jun 17 2015 Trip spans 2 days
US Airways
US Airways
DEN
5:05p
ONT
8:57p
3h 52m
1 stop
ONT
3:25p
DEN
7:38p
4h 13m
1 stop
Depart: Tue May 19 2015 Return: Wed May 27 2015 Trip spans 9 days
American Airlines
American Airlines
DEN
1:45a
ONT
6:07a
4h 22m
1 stop
ONT
3:25p
DEN
7:35p
4h 10m
1 stop
Depart: Wed May 20 2015 Return: Wed May 27 2015 Trip spans 8 days
American Airlines
American Airlines
DEN
1:45a
ONT
6:07a
4h 22m
1 stop
ONT
3:25p
DEN
7:35p
4h 10m
1 stop
Depart: Tue Jun 2 2015 Return: Tue Jun 9 2015 Trip spans 8 days
American Airlines
American Airlines
DEN
1:45a
ONT
6:07a
4h 22m
1 stop
ONT
3:25p
DEN
7:38p
4h 13m
1 stop
Depart: Wed Jun 17 2015 Return: Wed Jun 24 2015 Trip spans 8 days
American Airlines
American Airlines
DEN
5:05p
ONT
8:57p
3h 52m
1 stop
ONT
3:25p
DEN
7:38p
4h 13m
1 stop
Depart: Sat Jul 4 2015 Return: Tue Jul 14 2015 Trip spans 11 days
American Airlines
American Airlines
DEN
8:18a
ONT
3:04p
6h 46m
1 stop
ONT
3:25p
DEN
7:38p
4h 13m
1 stop
Depart: Tue Aug 4 2015 Return: Wed Aug 12 2015 Trip spans 9 days
American Airlines
American Airlines
DEN
5:05p
ONT
8:57p
3h 52m
1 stop
ONT
3:25p
DEN
7:38p
4h 13m
1 stop
Depart: Wed Aug 12 2015 Return: Fri Aug 21 2015 Trip spans 10 days
American Airlines
American Airlines
DEN
2:24p
ONT
8:57p
6h 33m
1 stop
ONT
3:30p
DEN
7:36p
4h 06m
1 stop
Depart: Fri May 29 2015 Return: Tue Jun 9 2015 Trip spans 12 days
Delta
Delta
DEN
2:10a
ONT
6:28a
4h 18m
1 stop
ONT
12:30p
DEN
4:49p
4h 19m
1 stop
Depart: Sat May 30 2015 Return: Tue Jun 9 2015 Trip spans 11 days
Delta
Delta
DEN
2:10a
ONT
6:27a
4h 17m
1 stop
ONT
12:30p
DEN
4:49p
4h 19m
1 stop
Depart: Wed Aug 26 2015 Return: Wed Sep 2 2015 Trip spans 8 days
Delta
Delta
DEN
3:25p
ONT
7:26p
4h 01m
1 stop
ONT
6:20a
DEN
10:10a
3h 50m
1 stop
Depart: Fri Aug 28 2015 Return: Wed Sep 2 2015 Trip spans 6 days
Delta
Delta
DEN
3:25p
ONT
7:26p
4h 01m
1 stop
ONT
6:20a
DEN
10:10a
3h 50m
1 stop
Depart: Sat Aug 29 2015 Return: Wed Sep 2 2015 Trip spans 5 days
Delta
Delta
DEN
1:50p
ONT
5:41p
3h 51m
1 stop
ONT
6:20a
DEN
10:10a
3h 50m
1 stop
Depart: Tue Sep 8 2015 Return: Tue Sep 22 2015 Trip spans 15 days
Delta
Delta
DEN
7:50a
ONT
2:39p
6h 49m
1 stop
ONT
6:20a
DEN
12:19p
5h 59m
1 stop
Depart: Fri Sep 18 2015 Return: Sat Oct 3 2015 Trip spans 16 days
Delta
Delta
DEN
3:05p
ONT
7:26p
4h 21m
1 stop
ONT
6:20a
DEN
10:10a
3h 50m
1 stop
Depart: Thu Oct 1 2015 Return: Sun Oct 4 2015 Trip spans 4 days
Delta
Delta
DEN
3:05p
ONT
7:26p
4h 21m
1 stop
ONT
2:05a
DEN
7:28a
5h 23m
1 stop
Depart: Sun May 10 2015 Return: Tue May 19 2015 Trip spans 10 days
American Airlines
American Airlines
DEN
1:45a
ONT
8:33a
6h 48m
1 stop
ONT
3:25p
DEN
7:35p
4h 10m
1 stop
Depart: Sun May 17 2015 Return: Thu May 28 2015 Trip spans 12 days
United
United
DEN
3:32a
ONT
9:17a
5h 45m
1 stop
ONT
9:24a
DEN
11:45a
2h 21m
nonstop
Depart: Tue Oct 6 2015 Return: Fri Oct 9 2015 Trip spans 4 days
Alaska Airlines
Alaska Airlines
DEN
7:05a
ONT
2:23p
7h 18m
1 stop
ONT
6:25a
DEN
12:50p
6h 25m
1 stop
Direct flights DEN to ONT on United
Flight # Depart DEN Arrive ONT Sun Mon Tue Wed Thu Fri Sat Valid Between
6281 11:26 am 12:48 pm Jun 4 - Jun 16
6281 11:30 am 12:54 pm Jun 2 - Jun 3
6281 11:30 am 12:54 pm May 6 - Jun 1
6281 11:35 am 12:54 pm May 4 - May 4
6281 11:36 am 12:59 pm May 5 - May 5
6281 12:10 pm 1:34 pm May 9 - May 30
5518 6:45 pm 8:09 pm Jun 2 - Jun 3
5518 6:45 pm 8:09 pm May 17 - May 31
5518 6:45 pm 8:09 pm May 6 - May 15
6253 6:45 pm 8:09 pm Jun 1 - Jun 1
5518 7:00 pm 8:19 pm May 5 - May 5
5518 10:10 pm 11:24 pm Apr 26 - May 4
6253 10:10 pm 11:26 pm Jun 4 - Jun 19
Airports
Origin

Denver
$179
Destination

Ontario
$179