Find Deals on Flights to Ontario

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youth
12-17
Child
2-11
Seat Infant
under 2
Lap Infant
under 2
The price shown for each flight will be the average for all passengers including any infants.
Compare vs. KAYAK all | none
Browse Origins:
Browse Destinations:

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

Book cheap flights to Ontario

(Round-trip)
Depart: Wed Sep 23 2015 Return: Tue Sep 29 2015 Trip spans 7 days
United
United
SFO
ONT
1h 24m
nonstop
ONT
SFO
1h 24m
nonstop
Depart: Thu Sep 17 2015 Return: Sat Oct 17 2015 Trip spans 31 days
Southwest
Southwest
OAK
ONT
1h 15m
nonstop
ONT
OAK
1h 10m
nonstop
Depart: Thu Oct 1 2015 Return: Sun Oct 4 2015 Trip spans 4 days
Southwest
Southwest
SJC
ONT
1h 10m
nonstop
ONT
SJC
1h 10m
nonstop
Depart: Tue Sep 22 2015 Return: Sat Sep 26 2015 Trip spans 5 days
Alaska Airlines
Alaska Airlines
SEA
ONT
2h 44m
nonstop
ONT
SEA
2h 30m
nonstop
Depart: Wed Oct 7 2015 Return: Sat Oct 10 2015 Trip spans 4 days
Alaska Airlines
Alaska Airlines
PDX
ONT
2h 12m
nonstop
ONT
PDX
2h 16m
nonstop
Depart: Tue Oct 20 2015 Return: Wed Oct 21 2015 Trip spans 2 days
United
United
ORD
ONT
9h 48m
1 stop
ONT
ORD
8h 44m
1 stop
Depart: Wed Nov 25 2015 Return: Fri Nov 27 2015 Trip spans 3 days
American Airlines
American Airlines
LAS
ONT
3h 27m
1 stop
ONT
LAS
3h 39m
1 stop
Depart: Tue Sep 29 2015 Return: Wed Sep 30 2015 Trip spans 2 days
American Airlines
American Airlines
DEN
ONT
6h 48m
1 stop
ONT
DEN
4h 09m
1 stop
Depart: Thu Dec 3 2015 Return: Tue Jan 12 2016 Trip spans 41 days
American Airlines
American Airlines
PHX
ONT
1h 15m
nonstop
ONT
PHX
1h 17m
nonstop
Depart: Sat Oct 3 2015 Return: Sat Oct 10 2015 Trip spans 8 days
American Airlines
American Airlines
SMF
ONT
5h 28m
1 stop
ONT
SMF
5h 13m
1 stop
Depart: Tue Sep 15 2015 Return: Sat Sep 19 2015 Trip spans 5 days
Delta
Delta
SLC
ONT
1h 49m
nonstop
ONT
SLC
1h 45m
nonstop
Depart: Thu Nov 5 2015 Return: Thu Nov 12 2015 Trip spans 8 days
United
United
HOU
ONT
3h 32m
nonstop
ONT
HOU
3h 12m
nonstop
Depart: Wed Oct 28 2015 Return: Sat Nov 7 2015 Trip spans 11 days
American Airlines
American Airlines
ATL
ONT
7h 12m
1 stop
ONT
ATL
6h 51m
1 stop
Depart: Fri Oct 30 2015 Return: Mon Nov 2 2015 Trip spans 4 days
Delta
Delta
DFW
ONT
5h 36m
1 stop
ONT
DFW
5h 13m
1 stop
Depart: Thu Oct 22 2015 Return: Wed Oct 28 2015 Trip spans 7 days
Delta
Delta
MDW
ONT
12h 04m
2 stops
ONT
MDW
7h 37m
2 stops
Depart: Wed Sep 16 2015 Return: Sat Sep 19 2015 Trip spans 4 days
American Airlines
American Airlines
TPA
ONT
7h 08m
1 stop
ONT
TPA
6h 20m
1 stop
Depart: Tue Oct 13 2015 Return: Tue Oct 20 2015 Trip spans 8 days
American Airlines
American Airlines
FLL
ONT
7h 29m
1 stop
ONT
FLL
6h 52m
1 stop
Depart: Fri Nov 13 2015 Return: Mon Nov 16 2015 Trip spans 4 days
American Airlines
American Airlines
BWI
ONT
7h 48m
1 stop
ONT
BWI
6h 50m
1 stop
Depart: Thu Oct 29 2015 Return: Mon Nov 2 2015 Trip spans 5 days
American Airlines
American Airlines
MSP
ONT
6h 08m
1 stop
ONT
MSP
5h 24m
1 stop
Depart: Sat Jan 9 2016 Return: Sat Jan 16 2016 Trip spans 8 days
American Airlines
American Airlines
AUS
ONT
5h 57m
1 stop
ONT
AUS
4h 45m
1 stop
Airports
Origin

Sacramento
$185
Portland
$168
Seattle
$154
Chicago
only $171
only $282
Fort Lauderdale
$297
Austin
$323
Oakland
$132
San Jose
$148
San Francisco
$114
Baltimore
$311
Minneapolis
$317
Atlanta
$221
Phoenix
$182
Salt Lake City
$188
Denver
$181
Dallas
$221
Tampa
$297
Las Vegas
$177
Houston
$214
Destination

Ontario
$114