Find Deals on Flights to Ontario

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights to Ontario

(Round-trip)
Depart: Sat Feb 27 2016 Return: Wed Mar 2 2016 Trip spans 5 days
United
United
SFO
ONT
1h 25m
nonstop
ONT
SFO
1h 26m
nonstop
Depart: Fri Feb 26 2016 Return: Thu Mar 3 2016 Trip spans 7 days
Southwest
Southwest
LAS
ONT
0h 55m
nonstop
ONT
LAS
0h 55m
nonstop
Depart: Tue Mar 1 2016 Return: Tue Mar 8 2016 Trip spans 8 days
United
United
ORD
ONT
6h 49m
1 stop
ONT
ORD
9h 35m
1 stop
Depart: Sat Mar 5 2016 Return: Wed Mar 9 2016 Trip spans 5 days
Delta
Delta
SLC
ONT
1h 45m
nonstop
ONT
SLC
1h 48m
nonstop
Depart: Sat Apr 9 2016 Return: Sat Apr 16 2016 Trip spans 8 days
Southwest
Southwest
OAK
ONT
1h 10m
nonstop
ONT
OAK
1h 25m
nonstop
Depart: Tue Mar 8 2016 Return: Wed Mar 9 2016 Trip spans 2 days
American Airlines
American Airlines
SEA
ONT
6h 40m
1 stop
ONT
SEA
7h 04m
1 stop
Depart: Fri Apr 15 2016 Return: Sun Apr 17 2016 Trip spans 3 days
Southwest
Southwest
SMF
ONT
1h 15m
nonstop
ONT
SMF
1h 15m
nonstop
Depart: Mon Feb 29 2016 Return: Wed Mar 2 2016 Trip spans 3 days
Delta
Delta
PDX
ONT
3h 59m
1 stop
ONT
PDX
6h 13m
1 stop
Depart: Tue Feb 23 2016 Return: Wed Mar 2 2016 Trip spans 9 days
United
United
DEN
ONT
2h 26m
nonstop
ONT
DEN
5h 33m
1 stop
Depart: Wed Apr 27 2016 Return: Mon May 2 2016 Trip spans 6 days
American Airlines
American Airlines
PHX
ONT
1h 13m
nonstop
ONT
PHX
1h 19m
nonstop
Depart: Sun Mar 6 2016 Return: Tue Mar 8 2016 Trip spans 3 days
American Airlines
American Airlines
SJC
ONT
5h 14m
1 stop
ONT
SJC
5h 21m
1 stop
Depart: Mon Feb 22 2016 Return: Tue Feb 23 2016 Trip spans 2 days
American Airlines
American Airlines
EWR
ONT
10h 42m
1 stop
ONT
EWR
7h 23m
1 stop
Depart: Fri Feb 19 2016 Return: Tue Feb 23 2016 Trip spans 5 days
American Airlines
American Airlines
JFK
ONT
7h 57m
1 stop
ONT
JFK
7h 30m
1 stop
Depart: Wed Mar 9 2016 Return: Wed Mar 16 2016 Trip spans 7 days
American Airlines
American Airlines
BWI
ONT
8h 04m
1 stop
ONT
BWI
7h 50m
1 stop
Depart: Wed Mar 2 2016 Return: Tue Mar 8 2016 Trip spans 7 days
American Airlines
American Airlines
AUS
ONT
7h 29m
1 stop
ONT
AUS
6h 47m
1 stop
Depart: Tue May 24 2016 Return: Wed May 25 2016 Trip spans 2 days
American Airlines
American Airlines
MSP
ONT
6h 31m
1 stop
ONT
MSP
5h 17m
1 stop
Depart: Thu Mar 10 2016 Return: Wed Mar 16 2016 Trip spans 6 days
American Airlines
American Airlines
IND
ONT
8h 59m
1 stop
ONT
IND
5h 30m
1 stop
Depart: Wed Mar 23 2016 Return: Tue Mar 29 2016 Trip spans 7 days
United
United
BOS
ONT
9h 19m
1 stop
ONT
BOS
8h 23m
1 stop
Depart: Fri Apr 29 2016 Return: Mon May 2 2016 Trip spans 4 days
United
United
IAD
ONT
10h 56m
1 stop
ONT
IAD
7h 38m
1 stop
Depart: Wed Jun 1 2016 Return: Tue Jun 7 2016 Trip spans 7 days
United
United
ATL
ONT
7h 23m
1 stop
ONT
ATL
6h 51m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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We’re not the seller
At KAYAK we don’t set prices, so it’s not possible for us to guarantee what other companies are selling.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we don't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find on occasion that certain prices are no longer available.

More questions or if you have a bad price to report to us
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Airports
Origin

New York
$261
Sacramento
$195
Portland
$197
Seattle
$191
Chicago
$177
Austin
$267
Oakland
$187
Washington
$312
San Jose
$239
San Francisco
$132
Baltimore
$261
Minneapolis
$295
Atlanta
$339
Phoenix
$211
Salt Lake City
$186
Newark
$251
Denver
$199
Las Vegas
$173
Boston
$311
Indianapolis
$311
Destination

Ontario
$132