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: Wed Feb 24 2016 Return: Sat Feb 27 2016 Trip spans 4 days
United
United
SFO
ONT
1h 25m
nonstop
ONT
SFO
1h 26m
nonstop
Depart: Sat Mar 5 2016 Return: Wed Mar 9 2016 Trip spans 5 days
Alaska Airlines
Alaska Airlines
PDX
ONT
2h 13m
nonstop
ONT
PDX
2h 28m
nonstop
Depart: Wed Apr 6 2016 Return: Wed Apr 20 2016 Trip spans 15 days
United
United
ORD
ONT
8h 03m
1 stop
ONT
ORD
7h 32m
1 stop
Depart: Wed Mar 9 2016 Return: Fri Mar 11 2016 Trip spans 3 days
Southwest
Southwest
OAK
ONT
1h 15m
nonstop
ONT
OAK
1h 15m
nonstop
Depart: Sat Apr 2 2016 Return: Wed Apr 6 2016 Trip spans 5 days
Delta
Delta
SLC
ONT
1h 45m
nonstop
ONT
SLC
1h 46m
nonstop
Depart: Thu Mar 24 2016 Return: Thu Mar 31 2016 Trip spans 8 days
Southwest
Southwest
LAS
ONT
0h 55m
nonstop
ONT
LAS
0h 55m
nonstop
Depart: Mon Feb 29 2016 Return: Sat Mar 5 2016 Trip spans 6 days
American Airlines
American Airlines
SMF
ONT
5h 07m
1 stop
ONT
SMF
5h 26m
1 stop
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: Tue Apr 26 2016 Return: Tue May 3 2016 Trip spans 8 days
United
United
DEN
ONT
6h 52m
1 stop
ONT
DEN
5h 39m
1 stop
Depart: Wed Apr 27 2016 Return: Mon May 2 2016 Trip spans 6 days
American Airlines
American Airlines
PHX
ONT
1h 15m
nonstop
ONT
PHX
1h 19m
nonstop
Depart: Mon Feb 22 2016 Return: Tue Feb 23 2016 Trip spans 2 days
United
United
EWR
ONT
10h 03m
1 stop
ONT
EWR
7h 22m
1 stop
Depart: Sat Feb 20 2016 Return: Tue Feb 23 2016 Trip spans 4 days
American Airlines
American Airlines
JFK
ONT
8h 04m
1 stop
ONT
JFK
7h 30m
1 stop
Depart: Sun Apr 17 2016 Return: Tue Apr 19 2016 Trip spans 3 days
American Airlines
American Airlines
MSP
ONT
6h 18m
1 stop
ONT
MSP
5h 17m
1 stop
Depart: Sat Mar 12 2016 Return: Wed Mar 16 2016 Trip spans 4 days
United
United
IAD
ONT
8h 36m
1 stop
ONT
IAD
9h 08m
1 stop
Depart: Fri Apr 22 2016 Return: Mon Apr 25 2016 Trip spans 4 days
American Airlines
American Airlines
IND
ONT
8h 48m
1 stop
ONT
IND
5h 42m
1 stop
Depart: Tue May 17 2016 Return: Tue May 24 2016 Trip spans 8 days
Southwest
Southwest
MDW
ONT
4h 15m
nonstop
ONT
MDW
3h 55m
nonstop
Depart: Wed Apr 13 2016 Return: Tue Apr 19 2016 Trip spans 7 days
American Airlines
American Airlines
DTW
ONT
7h 31m
1 stop
ONT
DTW
5h 58m
1 stop
Depart: Thu Feb 18 2016 Return: Tue Feb 23 2016 Trip spans 6 days
United
United
BOS
ONT
8h 53m
1 stop
ONT
BOS
8h 20m
1 stop
Depart: Sun Feb 14 2016 Return: Thu Feb 18 2016 Trip spans 5 days
American Airlines
American Airlines
LGA
ONT
8h 17m
1 stop
ONT
LGA
7h 49m
1 stop
Depart: Wed May 18 2016 Return: Sat May 28 2016 Trip spans 11 days
American Airlines
American Airlines
RDU
ONT
7h 07m
1 stop
ONT
RDU
7h 05m
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.

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Airports
Origin

New York
only $261
only $380
Detroit
$360
Sacramento
$191
Portland
$140
Seattle
$191
Raleigh
$380
Chicago
only $177
only $345
Oakland
$180
Washington
$307
San Francisco
$132
Minneapolis
$295
Phoenix
$211
Salt Lake City
$186
Newark
$251
Denver
$207
Las Vegas
$187
Boston
$371
Indianapolis
$311
Destination

Ontario
$132