Browse Origins:
  • United States:
Browse Destinations:

Find Flight Deals from United States to Ontario

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

Book cheap flights to Ontario

(Round-trip)
Depart: Tue Feb 10 2015 Return: Sun Feb 15 2015 Trip spans 6 days
US Airways
US Airways
SFO
1:00a
ONT
6:34a
5h 34m
1 stop
ONT
1:30a
SFO
7:34a
6h 04m
1 stop
Depart: Mon Feb 2 2015 Return: Sat Feb 7 2015 Trip spans 6 days
US Airways
US Airways
PHX
3:59p
ONT
5:11p
1h 12m
nonstop
ONT
11:40a
PHX
12:55p
1h 15m
nonstop
Depart: Tue Apr 21 2015 Return: Tue Apr 28 2015 Trip spans 8 days
US Airways
US Airways
SJC
12:15p
ONT
5:06p
4h 51m
1 stop
ONT
2:30a
SJC
7:45a
5h 15m
1 stop
Depart: Sat Apr 25 2015 Return: Tue Apr 28 2015 Trip spans 4 days
US Airways
US Airways
OAK
12:15p
ONT
5:06p
4h 51m
1 stop
ONT
2:30a
OAK
7:47a
5h 17m
1 stop
Depart: Thu Feb 26 2015 Return: Tue Mar 3 2015 Trip spans 6 days
US Airways
US Airways
DEN
12:45a
ONT
5:06a
4h 21m
1 stop
ONT
7:40a
DEN
11:39a
3h 59m
1 stop
Depart: Thu Feb 19 2015 Return: Tue Feb 24 2015 Trip spans 6 days
Delta
Delta
PDX
1:28p
ONT
5:45p
4h 17m
1 stop
ONT
11:30a
PDX
6:12p
6h 42m
1 stop
Depart: Fri Feb 6 2015 Return: Wed Feb 11 2015 Trip spans 6 days
Delta
Delta
SEA
1:05p
ONT
5:35p
4h 30m
1 stop
ONT
1:15a
SEA
7:29a
6h 14m
1 stop
Depart: Fri Mar 20 2015 Return: Tue Mar 24 2015 Trip spans 5 days
US Airways
US Airways
SMF
3:15p
ONT
7:56p
4h 41m
1 stop
ONT
12:40p
SMF
6:33p
5h 53m
1 stop
Depart: Tue Apr 28 2015 Return: Wed May 6 2015 Trip spans 9 days
Delta
Delta
MSP
7:15a
ONT
1:57p
6h 42m
1 stop
ONT
2:05a
MSP
7:25a
5h 20m
1 stop
Depart: Wed Apr 29 2015 Return: Mon May 4 2015 Trip spans 6 days
Delta
Delta
SLC
11:10a
ONT
12:57p
1h 47m
nonstop
ONT
2:15p
SLC
3:56p
1h 41m
nonstop
Depart: Sun May 24 2015 Return: Sat Jun 6 2015 Trip spans 14 days
US Airways
US Airways
DFW
2:15a
ONT
7:03a
4h 48m
1 stop
ONT
12:41p
DFW
5:11p
4h 30m
1 stop
Depart: Mon Jul 13 2015 Return: Sun Jul 19 2015 Trip spans 7 days
US Airways
US Airways
AUS
11:25a
ONT
4:44p
5h 19m
1 stop
ONT
3:30p
AUS
7:53p
4h 23m
1 stop
Depart: Sun Jul 12 2015 Return: Wed Jul 22 2015 Trip spans 11 days
American Airlines
American Airlines
JFK
6:42a
ONT
3:01p
8h 19m
1 stop
ONT
8:40a
JFK
4:19p
7h 39m
1 stop
Change your search
Airports
Origin

New York
$515
Sacramento
$224
Portland
$181
Seattle
$183
Austin
$401
Oakland
$167
San Jose
$167
San Francisco
$159
Minneapolis
$287
Phoenix
$164
Salt Lake City
$296
Denver
$175
Dallas
$305
Destination

Ontario
$159