Find Cheap Flights from Ontario to Costa Rica

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 from Ontario to Costa Rica

(Round-trip)
Depart: Sun Nov 12 2017 Return: Fri Nov 17 2017 Trip spans 6 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
SJO
5:00p
17h 00m
1 stop
SJO
12:00a
ONT
1:34p
13h 34m
1 stop
Depart: Thu Oct 12 2017 Return: Sat Oct 21 2017 Trip spans 10 days
Aeromexico
Aeromexico
ONT
12:00a
SJO
9:29p
21h 29m
2 stops
SJO
12:00a
ONT
12:10p
12h 10m
2 stops
Depart: Sat Feb 24 2018 Return: Wed Feb 28 2018 Trip spans 5 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
SJO
5:00p
17h 00m
1 stop
SJO
12:00a
ONT
1:34p
13h 34m
1 stop
Depart: Sat Mar 3 2018 Return: Sat Mar 10 2018 Trip spans 8 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
LIR
1:43a
25h 43m
2 stops
LIR
12:00a
ONT
4:05a
27h 05m
2 stops
Depart: Sat Nov 25 2017 Return: Wed Dec 6 2017 Trip spans 12 days
Aeromexico
Aeromexico
ONT
12:00a
SJO
10:31p
22h 31m
2 stops
SJO
12:00a
ONT
12:19p
36h 19m
2 stops
Depart: Thu Dec 7 2017 Return: Mon Dec 11 2017 Trip spans 5 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
SJO
5:00p
17h 00m
1 stop
SJO
12:00a
ONT
1:34p
13h 34m
1 stop
Depart: Sun Mar 25 2018 Return: Thu Mar 29 2018 Trip spans 5 days
Aeromexico
Aeromexico
ONT
12:00a
SJO
10:07p
22h 07m
2 stops
SJO
12:00a
ONT
7:08p
19h 08m
2 stops
Depart: Fri Jan 19 2018 Return: Sat Jan 27 2018 Trip spans 9 days
Aeromexico
Aeromexico
ONT
12:00a
SJO
9:06a
33h 06m
2 stops
SJO
12:00a
ONT
6:44p
18h 44m
2 stops
Depart: Sun Nov 19 2017 Return: Thu Nov 23 2017 Trip spans 5 days
$1099
Select
United
United
ONT
12:00a
LIR
5:55a
29h 55m
2 stops
LIR
12:00a
ONT
12:14a
24h 14m
2 stops
Depart: Thu Dec 14 2017 Return: Mon Dec 18 2017 Trip spans 5 days
$1121
Select
American Airlines
American Airlines
ONT
12:00a
LIR
10:06p
22h 06m
1 stop
LIR
12:00a
ONT
8:38a
8h 38m
1 stop
Depart: Mon Feb 19 2018 Return: Tue Feb 27 2018 Trip spans 9 days
$1243
Select
Air Canada
Air Canada
ONT
12:00a
LIR
10:05p
22h 05m
2 stops
LIR
12:00a
ONT
12:48p
36h 48m
2 stops
Depart: Thu Jan 18 2018 Return: Sun Jan 28 2018 Trip spans 11 days
Aeromexico
Aeromexico
ONT
12:00a
SJO
10:31p
22h 31m
2 stops
SJO
12:00a
ONT
6:44p
18h 44m
2 stops
Depart: Tue Jan 30 2018 Return: Fri Feb 9 2018 Trip spans 11 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
SJO
5:34p
17h 34m
2 stops
SJO
12:00a
ONT
1:34p
13h 34m
1 stop
Depart: Sun Mar 25 2018 Return: Sun Apr 1 2018 Trip spans 8 days
Aeromexico
Aeromexico
ONT
12:00a
SJO
10:07p
22h 07m
2 stops
SJO
12:00a
ONT
6:08p
18h 08m
2 stops
Depart: Mon Jan 22 2018 Return: Sun Jan 28 2018 Trip spans 7 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
LIR
5:42p
17h 42m
2 stops
LIR
12:00a
ONT
7:57p
19h 57m
2 stops
Depart: Thu Dec 7 2017 Return: Mon Dec 18 2017 Trip spans 12 days
Aeromexico
Aeromexico
ONT
12:00a
SJO
10:31p
22h 31m
2 stops
SJO
12:00a
ONT
6:44p
18h 44m
2 stops
Depart: Sat Feb 10 2018 Return: Sat Feb 17 2018 Trip spans 8 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
LIR
5:42p
17h 42m
2 stops
LIR
12:00a
ONT
8:32p
20h 32m
2 stops
Depart: Thu Dec 21 2017 Return: Sun Dec 31 2017 Trip spans 11 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
SJO
5:00p
17h 00m
1 stop
SJO
12:00a
ONT
1:34p
13h 34m
1 stop
Depart: Thu Nov 16 2017 Return: Sun Nov 26 2017 Trip spans 11 days
Aeromexico
Aeromexico
ONT
12:00a
SJO
10:31p
22h 31m
2 stops
SJO
12:00a
ONT
6:44p
18h 44m
2 stops
Depart: Sun Oct 8 2017 Return: Sat Oct 21 2017 Trip spans 14 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
LIR
8:12a
56h 12m
3 stops
LIR
12:00a
ONT
6:40p
18h 40m
3 stops
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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 can'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.

If you have more questions or if you have a bad price to report to us,
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Airports
Origin

Ontario
$289
Destination

Liberia
$722
San Jose
$289