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

Book cheap flights to Ontario

(Round-trip)
Depart: Sat Sep 5 2015 Return: Sun Sep 6 2015 Trip spans 2 days
United
United
SFO
ONT
1h 27m
nonstop
ONT
SFO
1h 25m
nonstop
Depart: Tue Sep 22 2015 Return: Sun Sep 27 2015 Trip spans 6 days
Southwest
Southwest
LAS
ONT
0h 50m
nonstop
ONT
LAS
1h 00m
nonstop
Depart: Sun Sep 13 2015 Return: Fri Sep 18 2015 Trip spans 6 days
Southwest
Southwest
OAK
ONT
1h 15m
nonstop
ONT
OAK
1h 15m
nonstop
Depart: Fri Aug 14 2015 Return: Wed Aug 19 2015 Trip spans 6 days
United
United
DEN
ONT
2h 16m
nonstop
ONT
DEN
2h 17m
nonstop
Depart: Wed Sep 16 2015 Return: Tue Sep 22 2015 Trip spans 7 days
US Airways
US Airways
DFW
ONT
5h 08m
1 stop
ONT
DFW
4h 50m
1 stop
Depart: Tue Oct 6 2015 Return: Sat Oct 10 2015 Trip spans 5 days
American Airlines
American Airlines
PHX
ONT
1h 09m
nonstop
ONT
PHX
1h 10m
nonstop
Depart: Wed Sep 9 2015 Return: Sat Sep 12 2015 Trip spans 4 days
American Airlines
American Airlines
SMF
ONT
5h 49m
1 stop
ONT
SMF
7h 06m
1 stop
Depart: Mon Jan 11 2016 Return: Fri Jan 15 2016 Trip spans 5 days
Delta
Delta
PDX
ONT
5h 56m
1 stop
ONT
PDX
6h 25m
1 stop
Depart: Tue Sep 1 2015 Return: Sun Sep 6 2015 Trip spans 6 days
Alaska Airlines
Alaska Airlines
SEA
ONT
2h 30m
nonstop
ONT
SEA
2h 25m
nonstop
Depart: Wed Oct 21 2015 Return: Tue Oct 27 2015 Trip spans 7 days
Southwest
Southwest
MDW
ONT
4h 20m
nonstop
ONT
MDW
3h 55m
nonstop
Depart: Sat Sep 19 2015 Return: Tue Sep 22 2015 Trip spans 4 days
US Airways
US Airways
AUS
ONT
4h 31m
1 stop
ONT
AUS
6h 09m
1 stop
Depart: Fri Jan 8 2016 Return: Sat Jan 16 2016 Trip spans 9 days
American Airlines
American Airlines
ORD
ONT
6h 03m
1 stop
ONT
ORD
6h 21m
1 stop
Depart: Fri Sep 25 2015 Return: Sun Sep 27 2015 Trip spans 3 days
Delta
Delta
SLC
ONT
1h 50m
nonstop
ONT
SLC
1h 43m
nonstop
Depart: Sun Jan 17 2016 Return: Tue Jan 19 2016 Trip spans 3 days
American Airlines
American Airlines
SJC
ONT
3h 34m
1 stop
ONT
SJC
5h 14m
1 stop
Depart: Tue Aug 25 2015 Return: Sat Aug 29 2015 Trip spans 5 days
American Airlines
American Airlines
SAT
ONT
4h 51m
1 stop
ONT
SAT
4h 34m
1 stop
Depart: Sun Feb 7 2016 Return: Sat Feb 13 2016 Trip spans 7 days
United
United
OMA
ONT
5h 38m
1 stop
ONT
OMA
4h 23m
1 stop
Depart: Tue Aug 18 2015 Return: Sat Aug 29 2015 Trip spans 12 days
American Airlines
American Airlines
HOU
ONT
5h 04m
1 stop
ONT
HOU
5h 42m
1 stop
Depart: Wed Nov 18 2015 Return: Thu Nov 26 2015 Trip spans 9 days
United
United
IND
ONT
7h 34m
1 stop
ONT
IND
6h 10m
1 stop
Depart: Thu Dec 10 2015 Return: Sun Dec 13 2015 Trip spans 4 days
United
United
FLL
ONT
8h 16m
1 stop
ONT
FLL
8h 00m
1 stop
Depart: Fri Oct 9 2015 Return: Tue Oct 13 2015 Trip spans 5 days
US Airways
US Airways
CLT
ONT
6h 59m
1 stop
ONT
CLT
6h 28m
1 stop
Airports
Origin

Charlotte
$300
Sacramento
$185
Portland
$191
Seattle
$194
San Antonio
$277
Chicago
only $231
only $197
Fort Lauderdale
$297
Austin
$213
Oakland
$159
San Jose
$268
Omaha
$281
San Francisco
$112
Phoenix
$180
Salt Lake City
$232
Denver
$164
Dallas
$179
Las Vegas
$134
Houston
$287
Indianapolis
$287
Destination

Ontario
$112