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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 8 2015 Return: Sat Aug 15 2015 Trip spans 8 days
United
United
SFO
ONT
1h 30m
nonstop
ONT
SFO
1h 25m
nonstop
Depart: Tue Oct 6 2015 Return: Sun Oct 11 2015 Trip spans 6 days
US Airways
US Airways
DFW
ONT
5h 22m
1 stop
ONT
DFW
4h 38m
1 stop
Depart: Wed Oct 28 2015 Return: Mon Nov 2 2015 Trip spans 6 days
Delta
Delta
SEA
ONT
5h 34m
1 stop
ONT
SEA
6h 06m
1 stop
Depart: Tue Jul 21 2015 Return: Tue Aug 4 2015 Trip spans 15 days
American Airlines
American Airlines
PHX
ONT
1h 10m
nonstop
ONT
PHX
1h 12m
nonstop
Depart: Sat Dec 5 2015 Return: Tue Dec 8 2015 Trip spans 4 days
United
United
DEN
ONT
2h 18m
nonstop
ONT
DEN
2h 05m
nonstop
Depart: Sun Sep 6 2015 Return: Sat Sep 12 2015 Trip spans 7 days
Alaska Airlines
Alaska Airlines
PDX
ONT
2h 16m
nonstop
ONT
PDX
2h 11m
nonstop
Depart: Tue Oct 20 2015 Return: Tue Oct 27 2015 Trip spans 8 days
Delta
Delta
SLC
ONT
1h 51m
nonstop
ONT
SLC
1h 41m
nonstop
Depart: Fri Sep 4 2015 Return: Sun Sep 6 2015 Trip spans 3 days
American Airlines
American Airlines
SMF
ONT
5h 31m
1 stop
ONT
SMF
5h 09m
1 stop
Depart: Tue Aug 25 2015 Return: Wed Aug 26 2015 Trip spans 2 days
United
United
ORD
ONT
7h 02m
1 stop
ONT
ORD
6h 51m
1 stop
Depart: Fri Sep 11 2015 Return: Mon Sep 14 2015 Trip spans 4 days
US Airways
US Airways
OAK
ONT
5h 33m
1 stop
ONT
OAK
13h 54m
1 stop
Depart: Wed Sep 9 2015 Return: Sat Sep 19 2015 Trip spans 11 days
United
United
HOU
ONT
3h 26m
nonstop
ONT
HOU
3h 12m
nonstop
Depart: Thu Aug 13 2015 Return: Tue Aug 18 2015 Trip spans 6 days
United
United
OMA
ONT
5h 30m
1 stop
ONT
OMA
7h 06m
1 stop
Depart: Mon Aug 31 2015 Return: Fri Sep 4 2015 Trip spans 5 days
US Airways
US Airways
SJC
ONT
5h 36m
1 stop
ONT
SJC
13h 46m
1 stop
Depart: Mon Oct 12 2015 Return: Tue Oct 20 2015 Trip spans 9 days
American Airlines
American Airlines
CLT
ONT
6h 59m
1 stop
ONT
CLT
6h 55m
1 stop
Depart: Wed Aug 5 2015 Return: Tue Aug 11 2015 Trip spans 7 days
American Airlines
American Airlines
TPA
ONT
6h 07m
1 stop
ONT
TPA
6h 01m
1 stop
Depart: Thu Oct 8 2015 Return: Mon Oct 12 2015 Trip spans 5 days
American Airlines
American Airlines
AUS
ONT
8h 28m
2 stops
ONT
AUS
6h 52m
1 stop
Depart: Sat Nov 7 2015 Return: Sat Nov 14 2015 Trip spans 8 days
United
United
PHL
ONT
13h 30m
2 stops
ONT
PHL
12h 24m
2 stops
Depart: Wed Sep 23 2015 Return: Sun Sep 27 2015 Trip spans 5 days
US Airways
US Airways
ATL
ONT
5h 57m
1 stop
ONT
ATL
5h 31m
1 stop
Depart: Mon Sep 28 2015 Return: Mon Oct 5 2015 Trip spans 8 days
Delta
Delta
JFK
ONT
9h 31m
1 stop
ONT
JFK
10h 37m
1 stop
Depart: Mon Oct 19 2015 Return: Thu Oct 22 2015 Trip spans 4 days
American Airlines
American Airlines
SAT
ONT
5h 37m
1 stop
ONT
SAT
4h 21m
1 stop
Airports
Origin

New York
$323
Charlotte
$300
Sacramento
$241
Portland
$222
Seattle
$191
San Antonio
$335
Chicago
$251
Austin
$308
Oakland
$271
San Jose
$291
Omaha
$281
San Francisco
$134
Atlanta
$321
Phoenix
$202
Salt Lake City
$236
Denver
$214
Dallas
$179
Tampa
$301
Philadelphia
$320
Houston
$274
Destination

Ontario
$134