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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: Tue Mar 24 2015 Return: Sat Apr 4 2015 Trip spans 12 days
Delta
Delta
DEN
3:05p
ONT
7:34p
4h 29m
1 stop
ONT
2:10a
DEN
7:26a
5h 16m
1 stop
Depart: Sun Mar 29 2015 Return: Tue Apr 7 2015 Trip spans 10 days
Delta
Delta
DEN
2:10a
ONT
6:30a
4h 20m
1 stop
ONT
2:15a
DEN
6:11a
3h 56m
1 stop
Depart: Wed Apr 1 2015 Return: Tue Apr 7 2015 Trip spans 7 days
Delta
Delta
DEN
3:05p
ONT
7:34p
4h 29m
1 stop
ONT
2:15a
DEN
7:25a
5h 10m
1 stop
Depart: Sun Apr 5 2015 Return: Tue Apr 14 2015 Trip spans 10 days
Delta
Delta
DEN
3:30a
ONT
7:25a
3h 55m
1 stop
ONT
6:05a
DEN
10:19a
4h 14m
1 stop
Depart: Sat Apr 11 2015 Return: Wed Apr 15 2015 Trip spans 5 days
Delta
Delta
DEN
1:56p
ONT
7:45p
5h 49m
1 stop
ONT
6:05a
DEN
10:19a
4h 14m
1 stop
Depart: Sat Apr 18 2015 Return: Sat Apr 25 2015 Trip spans 8 days
Delta
Delta
DEN
1:56p
ONT
7:45p
5h 49m
1 stop
ONT
12:35p
DEN
4:29p
3h 54m
1 stop
Depart: Sat Apr 25 2015 Return: Tue Apr 28 2015 Trip spans 4 days
Delta
Delta
DEN
1:56p
ONT
7:45p
5h 49m
1 stop
ONT
12:35p
DEN
4:30p
3h 55m
1 stop
Depart: Tue Apr 21 2015 Return: Wed Apr 29 2015 Trip spans 9 days
United
United
DEN
3:10p
ONT
9:09p
5h 59m
1 stop
ONT
9:30a
DEN
11:50a
2h 20m
nonstop
Depart: Sat Mar 28 2015 Return: Tue Apr 7 2015 Trip spans 11 days
United
United
DEN
7:05a
ONT
9:26a
2h 21m
nonstop
ONT
10:18a
DEN
12:38p
2h 20m
nonstop
Depart: Wed Apr 15 2015 Return: Sat Apr 18 2015 Trip spans 4 days
United
United
DEN
2:00a
ONT
7:15a
5h 15m
1 stop
ONT
2:00a
DEN
4:16a
2h 16m
nonstop
Depart: Tue Apr 28 2015 Return: Sat May 2 2015 Trip spans 5 days
United
United
DEN
2:00a
ONT
7:15a
5h 15m
1 stop
ONT
2:00a
DEN
4:16a
2h 16m
nonstop
Depart: Fri May 1 2015 Return: Sat May 9 2015 Trip spans 9 days
American Airlines
American Airlines
DEN
1:45a
ONT
6:07a
4h 22m
1 stop
ONT
8:40a
DEN
12:37p
3h 57m
1 stop
Depart: Sat May 2 2015 Return: Sun May 10 2015 Trip spans 9 days
US Airways
US Airways
DEN
1:45a
ONT
6:07a
4h 22m
1 stop
ONT
8:40a
DEN
12:37p
3h 57m
1 stop
Depart: Mon May 4 2015 Return: Sat May 9 2015 Trip spans 6 days
US Airways
US Airways
DEN
2:25p
ONT
6:06p
3h 41m
1 stop
ONT
8:40a
DEN
12:37p
3h 57m
1 stop
Depart: Wed May 6 2015 Return: Sun May 10 2015 Trip spans 5 days
US Airways
US Airways
DEN
2:20p
ONT
6:06p
3h 46m
1 stop
ONT
8:40a
DEN
12:37p
3h 57m
1 stop
Depart: Thu Apr 16 2015 Return: Mon Apr 20 2015 Trip spans 5 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 Apr 19 2015 Return: Thu Apr 23 2015 Trip spans 5 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: Mon Apr 20 2015 Return: Thu Apr 23 2015 Trip spans 4 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: Wed Apr 22 2015 Return: Sat Apr 25 2015 Trip spans 4 days
Delta
Delta
DEN
2:10a
ONT
6:28a
4h 18m
1 stop
ONT
12:35p
DEN
4:29p
3h 54m
1 stop
Depart: Sun Mar 15 2015 Return: Tue Mar 24 2015 Trip spans 10 days
Multiple Airlines
Multiple Airlines
DEN
2:10a
ONT
6:30a
4h 20m
1 stop
ONT
12:40p
DEN
7:35p
6h 55m
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
5172 11:05 am 12:26 pm Apr 4 - Apr 4
6281 11:05 am 12:26 pm Mar 14 - Mar 28
6281 11:36 am 12:59 pm Apr 8 - Apr 17
6281 12:20 pm 1:43 pm Apr 7 - Apr 7
5518 7:00 pm 8:23 pm Apr 7 - Apr 21
5518 7:10 pm 8:27 pm Mar 10 - Mar 31
5518 9:59 pm 11:17 pm Apr 8 - Apr 8
5518 10:07 pm 11:23 pm Apr 6 - Apr 6
5518 10:07 pm 11:27 pm Mar 8 - Apr 5
5642 10:07 pm 11:27 pm Mar 18 - Apr 1
5642 10:07 pm 11:27 pm Mar 11 - Mar 11
Airports
Origin

Denver
$181
Destination

Ontario
$181