$225 Find Cheap Flights from Ontario to Costa Rica - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Costa Rica departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

Save 20% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Costa Rica

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
San José
San José2 stops$502
Liberia
Liberia2 stops$621
San José
San José2 stops$502
Liberia
Liberia2 stops$621

Book Cheap Ontario to Costa Rica Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Costa Rica that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Costa Rica

Tue, Oct 6 - Wed, Oct 28
Southwest Logo
7:30 am - 7:40 pm
ONT
-
SJO
11h 10m
2 stops
Southwest Logo
1:00 pm - 10:00 pm
SJO
-
ONT
10h 00m
2 stops
$502Southwest
Thu, Aug 13 - Sat, Aug 22
Avianca Logo
11:35 pm - 8:45 am
ONT
-
SJO
8h 10m
1 stop
Avianca Logo
9:40 am - 9:45 pm
SJO
-
ONT
13h 05m
1 stop
$509Avianca
Tue, Aug 25 - Thu, Aug 27
Multiple Airlines Logo
9:36 pm - 9:39 pm
ONT
-
SJO
23h 03m
2 stops
Multiple Airlines Logo
7:00 am - 11:05 pm
SJO
-
ONT
17h 05m
2 stops
$537Multiple Airlines
Fri, Aug 21 - Tue, Aug 25
Multiple Airlines Logo
9:36 pm - 9:56 pm
ONT
-
SJO
23h 20m
2 stops
Multiple Airlines Logo
7:00 am - 11:05 pm
SJO
-
ONT
17h 05m
2 stops
$545Multiple Airlines
Tue, Oct 20 - Mon, Oct 26
United Airlines Logo
1:52 pm - 12:10 pm
ONT
-
LIR
21h 18m
2 stops
United Airlines Logo
11:50 am - 8:56 pm
LIR
-
ONT
10h 06m
1 stop
$621United Airlines
Sat, Oct 31 - Sat, Nov 7
American Airlines Logo
1:05 pm - 12:16 pm
ONT
-
LIR
22h 11m
2 stops
American Airlines Logo
1:21 pm - 9:57 am
LIR
-
ONT
22h 36m
2 stops
$626American Airlines
Sat, Oct 31 - Sat, Nov 7
American Airlines Logo
2:22 pm - 2:45 pm
ONT
-
LIR
23h 23m
1 stop
American Airlines Logo
3:10 pm - 11:57 pm
LIR
-
ONT
10h 47m
1 stop
$633American Airlines
Mon, Aug 31 - Thu, Sep 10
Delta Logo
6:00 am - 12:00 pm
ONT
-
LIR
29h 00m
2 stops
Delta Logo
1:25 pm - 12:14 pm
LIR
-
ONT
23h 49m
2 stops
$641Delta
Sat, Sep 5 - Thu, Sep 10
Delta Logo
6:00 am - 12:00 pm
ONT
-
LIR
29h 00m
2 stops
Delta Logo
1:25 pm - 12:14 pm
LIR
-
ONT
23h 49m
2 stops
$652Delta
Sun, Oct 25 - Fri, Oct 30
United Airlines Logo
6:00 am - 5:37 pm
ONT
-
LIR
10h 37m
1 stop
United Airlines Logo
11:50 am - 8:56 pm
LIR
-
ONT
10h 06m
1 stop
$714United Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Costa Rica flights

Get data-powered insights and trends into flights from Ontario to Costa Rica to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Ontario to Costa Rica?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Costa Rica, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Costa Rica is October, when tickets cost $371 (return) on average. On the other hand, the most expensive months are July and September, when the average cost of round-trip tickets is $760 and $580 respectively.

Find deals

Good to know

Low season

August

Cheapest flight

$225
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Ontario to San José

FAQs - booking Costa Rica flights

  • How does KAYAK find such low prices on flights from Ontario to Costa Rica?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Costa Rica.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Costa Rica?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ontario to Costa Rica is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Costa Rica?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Ontario to Costa Rica with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Costa Rica?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Ontario to Costa Rica up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Ontario to Costa Rica

Information on your arrival and departure airports

Ontario (ONT)