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$170+ 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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJO
Dec 27 — Jan 31
Fri 12/27
Fri 1/3
1 adult, Economy
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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 December 22, 2024.

Round-trip from

$387
(Priceline)

One-way from

$170
(CheapOair)
From Ontario to Costa Rica
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One-way flight from Ontario to Costa Rica
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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 December 22, 2024.

This American Airlines deal was found by Cheapflights users on 12/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2311:59 pmONT - SJO
2 stops12h 21mAmerican Airlines
Tue 12/311:30 pmSJO - ONT
2 stops21h 42mAmerican Airlines
Deal found 12/20$727
This United Airlines deal was found by Cheapflights users on 12/21. 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.
Tue 12/246:10 amONT - SJO
1 stop15h 48mUnited Airlines
Thu 12/262:20 pmSJO - ONT
1 stop10h 09mUnited Airlines
Deal found 12/21$762
This American Airlines deal was found by Cheapflights users on 12/21. 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.
Wed 12/252:50 pmONT - LIR
1 stop21h 40mAmerican Airlines
Mon 12/301:25 pmLIR - ONT
2 stops21h 47mAmerican Airlines
Deal found 12/21$782
This United Airlines deal was found by Cheapflights users on 12/21. 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.
Wed 12/255:05 amONT - LIR
1 stop9h 03mUnited Airlines
Mon 12/308:50 amLIR - ONT
1 stop15h 39mUnited Airlines
Deal found 12/21$914
This Delta deal was found by Cheapflights users on 12/20. 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 12/286:52 amONT - SJO
1 stop13h 03mDelta
Wed 1/17:05 amSJO - ONT
1 stop14h 36mDelta
Deal found 12/20$959
This Priceline deal was found by Cheapflights users on 12/21. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3110:30 pmONT - SJO
1 stop10h 55mAvianca
Thu 1/29:35 amSJO - ONT
1 stop13h 25mAvianca
Deal found 12/21$1,168
This Delta deal was found by Cheapflights users on 12/20. 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.
Sun 12/2910:29 pmONT - LIR
1 stop14h 03mDelta
Sun 1/52:19 pmLIR - ONT
1 stop11h 22mDelta
Deal found 12/20$1,289
This Mytrip deal was found by Cheapflights users on 12/19. 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.
Tue 12/2410:30 pmONT - LIR
2 stops16h 40mMultiple Airlines
Tue 12/316:40 amLIR - ONT
2 stops16h 20mMultiple Airlines
Deal found 12/19$1,848
This Mytrip deal was found by Cheapflights users on 12/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3012:58 amONT - SJO
3 stops20h 12mMultiple Airlines
Sun 1/52:42 pmSJO - ONT
3 stops34h 19mMultiple Airlines
Deal found 12/21$1,893
This Alaska Airlines deal was found by Cheapflights users on 12/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/238:32 pmONT - SJO
2 stops25h 26mAlaska Airlines
Mon 12/301:18 amSJO - ONT
2 stops20h 19mAlaska Airlines
Deal found 12/20$1,911
This Alaska Airlines deal was found by Cheapflights users on 12/21. 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.
Wed 12/256:00 amONT - LIR
3 stops23h 33mAlaska Airlines
Mon 12/306:18 pmLIR - ONT
2 stops27h 19mAlaska Airlines
Deal found 12/21$3,005

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 2,558,603 searches. Data last updated December 22, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Thu 2/20

10:30 pm-11:25 am

1 stop10h 55m

San José Juan Santamaria Intl

Thu 2/27

3:10 pm-9:00 pm

1 stop7h 50m

$387

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Mon 1/20

12:58 am-11:12 pm

1 stop20h 14m

San José Juan Santamaria Intl

Tue 1/28

3:32 pm-11:01 pm

1 stop9h 29m

$400

OntarioLiberia

ONT - LIR

ONTLIR

Ontario

Fri 1/24

6:00 am-5:57 pm

1 stop9h 57m

Liberia

Sun 1/26

9:30 am-8:29 pm

1 stop12h 59m

$515

OntarioLiberia

ONT - LIR

ONTLIR

Ontario

Thu 1/30

2:44 pm-12:50 pm

2 stops20h 06m

Liberia

Mon 2/3

1:50 pm-9:59 am

2 stops22h 09m

$520

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Wed 3/19

6:00 am-9:59 pm

1 stop14h 59m

San José Juan Santamaria Intl

Thu 4/3

11:30 pm-5:49 pm

1 stop19h 19m

$536

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Thu 1/30

6:00 am-8:39 pm

1 stop12h 39m

San José Juan Santamaria Intl

Mon 2/3

6:30 am-9:57 pm

1 stop17h 27m

$548

OntarioLiberia

ONT - LIR

ONTLIR

Ontario

Sat 2/8

6:15 am-7:19 pm

1 stop11h 04m

Liberia

Sat 2/15

8:50 am-9:59 pm

1 stop15h 09m

$618

OntarioLiberia

ONT - LIR

ONTLIR

Ontario

Thu 1/30

7:00 am-7:09 am

2 stops22h 09m

Liberia

Mon 2/3

6:40 pm-8:13 pm

3 stops27h 33m

$625

OntarioLiberia

ONT - LIR

ONTLIR

Ontario

Sat 2/1

4:05 pm-12:42 pm

2 stops18h 37m

Liberia

Tue 2/4

2:20 pm-10:52 pm

1 stop10h 32m

$730

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Sat 2/1

4:06 pm-11:57 pm

3 stops29h 51m

San José Juan Santamaria Intl

Mon 2/3

1:12 am-8:13 pm

3 stops21h 01m

$734

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 19 results
1
2

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 March is currently the most expensive (average of $555). 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 December 22, 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 December 22, 2024.
Read reviews from past customers who have flown Alaska Airlines, Avianca 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.
Alaska Airlines
8.0
Very good
9,537 reviews

Food

7.2

Overall

8.0

Comfort

7.9

Entertainment

7.1

Crew

8.5

Boarding

8.2

Reviews

1 / 10

Could not watch a movie, asked for help. Could not get extra cookies

Alaska Airlines
8.0
Very good
9,537 reviews
Alaska Airlines
8.0
Very good
9,537 reviews

Food

7.2

Overall

8.0

Comfort

7.9

Entertainment

7.1

Crew

8.5

Boarding

8.2

Reviews

1 / 10

Could not watch a movie, asked for help. Could not get extra cookies

Delta
8.0
Very good
8,597 reviews
Alaska Airlines
8.0
Very good
9,537 reviews

Food

7.2

Overall

8.0

Comfort

7.9

Entertainment

7.1

Crew

8.5

Boarding

8.2

Reviews

1 / 10

Could not watch a movie, asked for help. Could not get extra cookies

United Airlines
7.4
Good
9,035 reviews
Alaska Airlines
8.0
Very good
9,537 reviews

Food

7.2

Overall

8.0

Comfort

7.9

Entertainment

7.1

Crew

8.5

Boarding

8.2

Reviews

1 / 10

Could not watch a movie, asked for help. Could not get extra cookies

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,537 reviews

Food

7.2

Overall

8.0

Comfort

7.9

Entertainment

7.1

Crew

8.5

Boarding

8.2

Reviews

1 / 10

Could not watch a movie, asked for help. Could not get extra cookies

Avianca
7.0
Good
2,653 reviews
Alaska Airlines
8.0
Very good
9,537 reviews

Food

7.2

Overall

8.0

Comfort

7.9

Entertainment

7.1

Crew

8.5

Boarding

8.2

Reviews

1 / 10

Could not watch a movie, asked for help. Could not get extra cookies

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 $177. American Airlines flights start at $210 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 March is currently the most expensive (average of $555). 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

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Alternative routes for Ontario to Costa Rica

See prices for flight routes from nearby airports that may be better suited for you.
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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 2,558,603 searches. Data last updated December 22, 2024.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest$314Average$448FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$376Average$724FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$442Average$641FlexibilityNo cancel feeOn-time71%
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