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: Tue Mar 22 2016 Return: Tue Mar 29 2016 Trip spans 8 days
Southwest
Southwest
OAK
ONT
1h 10m
nonstop
ONT
OAK
1h 10m
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: Thu Feb 25 2016 Return: Sat Feb 27 2016 Trip spans 3 days
United
United
SFO
ONT
1h 25m
nonstop
ONT
SFO
1h 26m
nonstop
Depart: Tue Apr 12 2016 Return: Tue Apr 19 2016 Trip spans 8 days
Southwest
Southwest
LAS
ONT
0h 55m
nonstop
ONT
LAS
0h 55m
nonstop
Depart: Sat Apr 30 2016 Return: Tue May 3 2016 Trip spans 4 days
United
United
ORD
ONT
9h 14m
1 stop
ONT
ORD
7h 23m
1 stop
Depart: Tue Mar 8 2016 Return: Fri Mar 11 2016 Trip spans 4 days
Southwest
Southwest
SJC
ONT
1h 10m
nonstop
ONT
SJC
1h 10m
nonstop
Depart: Thu Feb 18 2016 Return: Wed Feb 24 2016 Trip spans 7 days
American Airlines
American Airlines
SEA
ONT
6h 24m
1 stop
ONT
SEA
7h 04m
1 stop
Depart: Sun Mar 6 2016 Return: Wed Mar 9 2016 Trip spans 4 days
American Airlines
American Airlines
SMF
ONT
4h 56m
1 stop
ONT
SMF
5h 25m
1 stop
Depart: Fri Feb 26 2016 Return: Sat Feb 27 2016 Trip spans 2 days
Delta
Delta
SLC
ONT
1h 55m
nonstop
ONT
SLC
1h 46m
nonstop
Depart: Tue Mar 1 2016 Return: Wed Mar 30 2016 Trip spans 29 days
United
United
DEN
ONT
2h 26m
nonstop
ONT
DEN
6h 11m
1 stop
Depart: Tue Mar 15 2016 Return: Sat Mar 26 2016 Trip spans 12 days
American Airlines
American Airlines
PHX
ONT
1h 19m
nonstop
ONT
PHX
1h 09m
nonstop
Depart: Tue May 3 2016 Return: Sat May 7 2016 Trip spans 5 days
United
United
BWI
ONT
11h 23m
1 stop
ONT
BWI
9h 50m
1 stop
Depart: Wed May 11 2016 Return: Wed May 18 2016 Trip spans 8 days
United
United
EWR
ONT
10h 32m
1 stop
ONT
EWR
10h 23m
1 stop
Depart: Mon Mar 7 2016 Return: Wed Mar 9 2016 Trip spans 3 days
United
United
IAD
ONT
8h 58m
1 stop
ONT
IAD
9h 20m
1 stop
Depart: Tue Apr 19 2016 Return: Tue Apr 26 2016 Trip spans 8 days
American Airlines
American Airlines
RDU
ONT
7h 11m
1 stop
ONT
RDU
6h 36m
1 stop
Depart: Fri Apr 22 2016 Return: Wed Apr 27 2016 Trip spans 6 days
United
United
BOS
ONT
11h 28m
1 stop
ONT
BOS
9h 38m
1 stop
Depart: Tue May 10 2016 Return: Sun May 15 2016 Trip spans 6 days
American Airlines
American Airlines
DCA
ONT
7h 31m
1 stop
ONT
DCA
7h 03m
1 stop
Depart: Tue May 24 2016 Return: Sat Jun 11 2016 Trip spans 19 days
American Airlines
American Airlines
ATL
ONT
8h 13m
1 stop
ONT
ATL
5h 15m
1 stop
Depart: Sat Mar 19 2016 Return: Mon Mar 21 2016 Trip spans 3 days
Southwest
Southwest
MDW
ONT
4h 25m
nonstop
ONT
MDW
3h 50m
nonstop
Depart: Thu Jun 2 2016 Return: Sun Jun 5 2016 Trip spans 4 days
United
United
LGA
ONT
9h 07m
1 stop
ONT
LGA
10h 41m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We make every attempt to get accurate prices, however, prices are not guaranteed.

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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.

We aggregate tons of data for you
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
$351
Sacramento
$191
Portland
$140
Seattle
$191
Raleigh
$299
Chicago
only $177
only $351
Oakland
$136
Washington
only $291
only $317
San Jose
$182
San Francisco
$142
Baltimore
$261
Atlanta
$339
Phoenix
$206
Salt Lake City
$192
Newark
$271
Denver
$199
Las Vegas
$150
Boston
$311
Destination

Ontario
$136