HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Costa Rica

$159+ Cheap flights from Ontario (ONT) to Costa Rica

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJO
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Costa Rica with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Ontario to Costa Rica

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Costa Rica (CR0). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 21, 2024.

Find flight deals from Ontario to Costa Rica

Cheapest flights from Ontario to Costa Rica
Explore the most affordable flight options available from Ontario to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 21, 2024.

This Mytrip deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/912:58 amONT - SJO
1 stop20h 14mMultiple Airlines
Tue 12/173:32 pmSJO - ONT
1 stop9h 29mMultiple Airlines
Deal found 11/19$427
This Cheapflightsfares deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2810:30 pmONT - SJO
1 stop10h 55mAvianca
Thu 12/55:05 amSJO - ONT
1 stop17h 55mAvianca
Deal found 11/20$495
This CheapOair deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1312:58 amONT - SJO
1 stop20h 14mVolaris
Sat 12/213:32 pmSJO - ONT
1 stop9h 29mVolaris
Deal found 11/20$508
This American Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/106:05 amONT - SJO
1 stop15h 15mAmerican Airlines
Tue 12/172:51 pmSJO - ONT
2 stops20h 13mAmerican Airlines
Deal found 11/19$554
This United Airlines deal was found by Cheapflights users on 11/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/76:10 amONT - SJO
1 stop15h 48mUnited Airlines
Tue 12/172:20 pmSJO - ONT
1 stop9h 22mUnited Airlines
Deal found 11/21$562
This United Airlines deal was found by Cheapflights users on 11/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/85:05 amONT - LIR
1 stop9h 03mUnited Airlines
Fri 12/132:14 pmLIR - ONT
1 stop9h 28mUnited Airlines
Deal found 11/21$688
This American Airlines deal was found by Cheapflights users on 11/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3111:59 pmONT - LIR
1 stop10h 21mAmerican Airlines
Tue 1/73:35 pmLIR - ONT
2 stops24h 16mAmerican Airlines
Deal found 11/21$730
This Southwest deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/208:35 amONT - SJO
1 stop10h 05mSouthwest
Wed 11/279:55 amSJO - ONT
2 stops13h 20mSouthwest
Deal found 11/20$738
This Delta deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/307:10 amONT - SJO
1 stop12h 43mDelta
Sun 12/82:13 pmSJO - ONT
1 stop10h 49mDelta
Deal found 11/20$834
This Alaska Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/101:53 pmONT - SJO
3 stops32h 06mAlaska Airlines
Mon 12/161:24 amSJO - ONT
3 stops20h 36mAlaska Airlines
Deal found 11/19$1,196
This Delta deal was found by Cheapflights users on 11/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2910:29 pmONT - LIR
1 stop12h 23mDelta
Wed 1/82:10 pmLIR - ONT
1 stop10h 42mDelta
Deal found 11/21$1,374
This Alaska Airlines deal was found by Cheapflights users on 11/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3110:40 amONT - LIR
2 stops18h 53mAlaska Airlines
Tue 1/76:40 pmLIR - ONT
3 stops27h 33mAlaska Airlines
Deal found 11/21$1,499

Find flights from Ontario to Costa Rica within your budget

Customize your flight search to find flights from Ontario to Costa Rica that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,612,795 searches. Data last updated November 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Tue 2/4

10:30 pm-11:25 am

1 stop10h 55m

San José Juan Santamaria Intl

Tue 2/11

3:10 pm-9:00 pm

1 stop7h 50m

$337

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Mon 1/13

12:58 am-11:12 pm

1 stop20h 14m

San José Juan Santamaria Intl

Tue 1/21

3:32 pm-11:01 pm

1 stop9h 29m

$347

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Mon 1/13

12:58 am-11:12 pm

1 stop20h 14m

San José Juan Santamaria Intl

Tue 1/21

3:32 pm-11:01 pm

1 stop9h 29m

$355

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Sat 1/25

7:00 am-11:09 pm

1 stop14h 09m

San José Juan Santamaria Intl

Sat 2/1

3:14 pm-9:59 am

2 stops20h 45m

$463

OntarioLiberia

ONT - LIR

ONTLIR

Ontario

Thu 1/30

11:59 pm-2:34 pm

1 stop12h 35m

Liberia

Mon 2/3

2:59 pm-10:16 pm

1 stop9h 17m

$505

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Sun 2/2

6:00 am-8:39 pm

1 stop12h 39m

San José Juan Santamaria Intl

Tue 2/4

6:30 am-9:57 pm

1 stop17h 27m

$548

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Wed 4/2

8:52 am-9:55 pm

1 stop12h 03m

San José Juan Santamaria Intl

Sun 4/13

11:30 pm-11:18 am

1 stop12h 48m

$557

OntarioLiberia

ONT - LIR

ONTLIR

Ontario

Thu 1/30

7:00 am-7:09 am

2 stops22h 09m

Liberia

Mon 2/3

10:00 am-10:49 am

3 stops26h 49m

$571

OntarioLiberia

ONT - LIR

ONTLIR

Ontario

Sun 1/12

6:00 am-5:57 pm

1 stop9h 57m

Liberia

Thu 1/16

2:14 pm-9:57 pm

1 stop9h 43m

$589

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Sat 1/25

6:00 am-11:57 pm

2 stops15h 57m

San José Juan Santamaria Intl

Fri 1/31

1:12 am-6:12 pm

3 stops19h 00m

$642

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 26 results
1
2
3

Best time to book a flight from Ontario to Costa Rica

Have a flexible travel schedule? Discover the best time to fly to Costa Rica from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Ontario to Costa Rica

Get recent, data-driven insights about flights from Ontario to Costa Rica including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Ontario to Costa Rica?

Currently, September is the cheapest month in which you can book a flight from Ontario to Costa Rica (average of $398). Flying from Ontario to Costa Rica in July is currently the most expensive (average of $531). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to CR?

Find hourly flight availability from Ontario to Costa Rica. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 21, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Costa Rica as you normally would.

Rainfall in Costa Rica by month

Plan your trip to Costa Rica by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Costa Rica ranges from 0.0 - 11.8 inches per month. September is typically the wettest month, when rainfall can reach 11.8 in. February is typically the driest time to visit Costa Rica when rainfall is around 0.0 in.

Temperature in Costa Rica by month

Plan your trip to Costa Rica by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Costa Rica, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 64.4 F).

Reviews of airlines servicing Costa Rica

Get insights into the airlines that provide service to Costa Rica. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Costa Rica. Reviews last updated November 21, 2024.
Read reviews from past customers who have flown Avianca, United Airlines and American Airlines from Ontario to Costa Rica. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,005 reviews

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very good
5,005 reviews
Southwest
8.1
Very good
5,005 reviews

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,464 reviews
Southwest
8.1
Very good
5,005 reviews

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
8,755 reviews
Southwest
8.1
Very good
5,005 reviews

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
9,172 reviews
Southwest
8.1
Very good
5,005 reviews

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,005 reviews

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Related info for your journey

Find useful and relevant information for your journey from Ontario to Costa Rica. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Costa Rica?

    If you book a flight to Costa Rica from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • What are the cheapest airlines to fly from Ontario to Costa Rica one-way?

    To fly one-way, consider booking your trip with Avianca, which is currently one of the cheapest options available, starting at $159. American Airlines flights start at $216 while deals on United Airlines start at $255 one-way.

  • Can I find deals for flights from Ontario to Costa Rica that include hotel bookings?

    Yes. In addition to deals on Ontario to Costa Rica flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Costa Rica?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Costa Rica.

  • Can I find deals for business class flights from Ontario to Costa Rica?

    Yes. Cheapflights offers flight deals from Ontario to Costa Rica by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Costa Rica?

    Currently, September is the cheapest month in which you can book a flight from Ontario to Costa Rica (average of $398). Flying from Ontario to Costa Rica in July is currently the most expensive (average of $531). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Costa Rica

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to San Salvador flights
Los Angeles to Guatemala City flights
Los Angeles to San José flights
Los Angeles to Panama City flights
San Francisco to San José flights
Los Angeles to Liberia flights
Ontario to San Salvador flights
Los Angeles to Philip S.W.Goldson flights
San Francisco to Liberia flights
Ontario to Guatemala City flights
San Francisco to Panama City flights
Ontario to San José flights
San Francisco to Guatemala City flights
Burbank to San Salvador flights
Los Angeles to Managua flights
Burbank to Guatemala City flights
San Francisco to San Salvador flights
Oakland to San José flights
San Francisco to Managua flights
San Francisco to Philip S.W.Goldson flights
Las Vegas to San Salvador flights
Burbank to San José flights
Oakland to San Salvador flights
Ontario to Liberia flights
Ontario to Managua flights
Santa Ana to Guatemala City flights
Ontario to Panama City flights
Ontario to Philip S.W.Goldson flights
Santa Ana to San Salvador flights
San Jose to San José flights
San Diego to Panama City flights
San Jose to Guatemala City flights
San Diego to San José flights
Sacramento to San José flights
Sacramento to Philip S.W.Goldson flights
Oakland to Guatemala City flights
Los Angeles to San Pedro Sula flights
Santa Ana to San José flights
Sacramento to Guatemala City flights
San Francisco to San Pedro Sula flights
Las Vegas to San José flights
San Diego to Liberia flights
Las Vegas to Panama City flights
San Jose to Liberia flights
Sacramento to Liberia flights
San Jose to Panama City flights
Las Vegas to Managua flights
Ontario to San Pedro Sula flights
Las Vegas to Philip S.W.Goldson flights
San Diego to Philip S.W.Goldson flights

Top 3 airlines flying from Ontario to Costa Rica

Discover the top 3 airlines that operate flights from Ontario to Costa Rica. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,612,795 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest$314Average$436FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$378Average$665FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$442Average$650FlexibilityNo cancel feeOn-time71%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines