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Find Deals on Flights to Ontario

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

Book cheap flights to Ontario

(Round-trip)
Depart: Sat Aug 29 2015 Return: Tue Sep 1 2015 Trip spans 4 days
United
United
SFO
ONT
1h 27m
nonstop
ONT
SFO
1h 25m
nonstop
Depart: Wed Sep 16 2015 Return: Sun Sep 20 2015 Trip spans 5 days
American Airlines
American Airlines
LAS
ONT
5h 44m
1 stop
ONT
LAS
4h 28m
1 stop
Depart: Wed Aug 26 2015 Return: Sun Sep 6 2015 Trip spans 12 days
American Airlines
American Airlines
PHX
ONT
1h 14m
nonstop
ONT
PHX
1h 16m
nonstop
Depart: Mon Nov 23 2015 Return: Thu Nov 26 2015 Trip spans 4 days
United
United
DEN
ONT
2h 15m
nonstop
ONT
DEN
2h 05m
nonstop
Depart: Tue Aug 18 2015 Return: Wed Aug 19 2015 Trip spans 2 days
US Airways
US Airways
DFW
ONT
7h 16m
1 stop
ONT
DFW
4h 35m
1 stop
Depart: Thu Oct 1 2015 Return: Sat Oct 3 2015 Trip spans 3 days
Delta
Delta
SEA
ONT
4h 16m
1 stop
ONT
SEA
4h 48m
1 stop
Depart: Sat Nov 7 2015 Return: Mon Nov 9 2015 Trip spans 3 days
Alaska Airlines
Alaska Airlines
PDX
ONT
2h 17m
nonstop
ONT
PDX
2h 28m
nonstop
Depart: Sat Sep 26 2015 Return: Sat Oct 3 2015 Trip spans 8 days
US Airways
US Airways
OAK
ONT
5h 33m
1 stop
ONT
OAK
5h 31m
1 stop
Depart: Tue Sep 8 2015 Return: Mon Sep 14 2015 Trip spans 7 days
Delta
Delta
SLC
ONT
1h 42m
nonstop
ONT
SLC
1h 45m
nonstop
Depart: Sat Jul 18 2015 Return: Sat Jul 25 2015 Trip spans 8 days
American Airlines
American Airlines
SMF
ONT
4h 42m
1 stop
ONT
SMF
5h 32m
1 stop
Depart: Tue Jul 21 2015 Return: Sat Jul 25 2015 Trip spans 5 days
American Airlines
American Airlines
SJC
ONT
4h 45m
1 stop
ONT
SJC
5h 52m
1 stop
Depart: Sun Sep 6 2015 Return: Sat Sep 12 2015 Trip spans 7 days
United
United
OMA
ONT
4h 59m
1 stop
ONT
OMA
4h 55m
1 stop
Depart: Mon Nov 9 2015 Return: Thu Nov 12 2015 Trip spans 4 days
United
United
AUS
ONT
5h 35m
1 stop
ONT
AUS
5h 08m
1 stop
Depart: Sat Jan 16 2016 Return: Tue Jan 19 2016 Trip spans 4 days
Delta
Delta
ORD
ONT
9h 06m
1 stop
ONT
ORD
6h 59m
1 stop
Depart: Wed Aug 12 2015 Return: Wed Aug 19 2015 Trip spans 8 days
American Airlines
American Airlines
CLT
ONT
7h 02m
1 stop
ONT
CLT
6h 59m
1 stop
Depart: Mon Aug 24 2015 Return: Tue Sep 1 2015 Trip spans 9 days
American Airlines
American Airlines
MSY
ONT
12h 04m
2 stops
ONT
MSY
10h 32m
1 stop
Depart: Sat Sep 12 2015 Return: Tue Sep 15 2015 Trip spans 4 days
Delta
Delta
MDW
ONT
10h 54m
2 stops
ONT
MDW
8h 24m
2 stops
Depart: Tue Jan 12 2016 Return: Sat Jan 16 2016 Trip spans 5 days
United
United
TPA
ONT
14h 00m
3 stops
ONT
TPA
8h 55m
1 stop
Depart: Tue Aug 25 2015 Return: Mon Aug 31 2015 Trip spans 7 days
United
United
ATL
ONT
7h 57m
1 stop
ONT
ATL
7h 21m
1 stop
Depart: Tue Sep 29 2015 Return: Tue Oct 6 2015 Trip spans 8 days
United
United
EWR
ONT
8h 13m
1 stop
ONT
EWR
6h 49m
1 stop
Airports
Origin

Charlotte
$300
Sacramento
$239
Portland
$194
Seattle
$191
Chicago
only $297
only $308
Austin
$297
Oakland
$233
San Jose
$263
Omaha
$281
San Francisco
$122
Atlanta
$311
New Orleans
$305
Phoenix
$180
Salt Lake City
$236
Newark
$323
Denver
$180
Dallas
$183
Tampa
$309
Las Vegas
$173
Destination

Ontario
$122