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

The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $178. However, be on the lookout for offers from Avianca and American Airlines, as they are both options that can get you from Costa Rica to Ontario for a low price.

What are the most popular airlines that fly from Costa Rica to Ontario?

When booking a flight from Costa Rica to Ontario, you may want to consider flying on American Airlines, Avianca or United Airlines as they are the most popular for this route.

How far in advance should I book a flight from Costa Rica to Ontario?

To save on the cost of your flight from Costa Rica to Ontario, book at least 58 days before your planned departure. Booking around this time can save you about 19% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $436 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $442.

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

Our data shows that September tends to be the cheapest month to fly to Ontario from Costa Rica. Users have commonly found prices around $402 for the month, but tickets can be as low as $133. Due to multiple factors, prepare for potentially higher prices in June.

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

Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Ontario from Costa Rica.

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

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

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

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

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

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

$515+ Save on Flights from Costa Rica to Ontario

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Cheap flight deals from Costa Rica to Ontario

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$303 (United Airlines)
One-way from	$178 (United Airlines)
Popular in	June
Cheapest in	September
Average price	$364

Provider with most accurate pricing for San José Juan Santamaria Intl-Los Angeles flight deals.

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Provider most trusted by Cheapflights users for San José Juan Santamaria Intl-Los Angeles flights.

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From Costa Rica to Ontario

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One-way flight from Costa Rica to Ontario

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Highest demand for flights based on searches. 7% potential increase in price ($34 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).

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Average for round-trip flights in February 2025

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Find flight deals from Costa Rica to Ontario

Cheapest flights from Costa Rica to Ontario
Explore the most affordable flight options available from Costa Rica to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Mon 5/268:45 amSJO - ONT

1 stop15h 00mUnited Airlines

Sun 6/16:00 amONT - SJO

1 stop24h 15mUnited Airlines

Deal found 2/20

$303

Thu 5/19:35 amSJO - ONT

1 stop13h 20mAvianca

Tue 5/611:25 pmONT - SJO

1 stop13h 05mAvianca

Deal found 2/20

$433

Mon 4/141:20 pmLIR - ONT

1 stop9h 38mUnited Airlines

Sun 4/206:10 amONT - LIR

1 stop7h 13mUnited Airlines

Deal found 2/20

$502

Tue 3/43:32 pmSJO - ONT

1 stop9h 29mMultiple Airlines

Thu 3/610:30 pmONT - SJO

1 stop10h 55mMultiple Airlines

Deal found 2/19

$536

Sun 2/232:19 pmSJO - ONT

1 stop10h 33mDelta

Tue 3/47:05 amONT - SJO

1 stop13h 07mDelta

Deal found 2/20

$567

Sat 11/156:29 amSJO - ONT

2 stops13h 24mAmerican Airlines

Sat 12/68:05 pmONT - SJO

2 stops12h 30mAmerican Airlines

Deal found 2/19

$572

Wed 3/51:26 amSJO - ONT

3 stops24h 32mAlaska Airlines

Mon 3/176:00 amONT - SJO

2 stops15h 59mAlaska Airlines

Deal found 2/20

$756

Sun 2/236:30 amSJO - ONT

2 stops17h 34mBritish Airways

Tue 3/46:59 amONT - SJO

1 stop12h 06mBritish Airways

Deal found 2/20

$1,155

Best flights from Costa Rica to Ontario
Discover carefully curated flight deals from Costa Rica to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 20, 2025.

Sat 5/176:35 amSJO - ONT

1 stop9h 41mUnited Airlines

Sun 5/256:41 pmONT - SJO

1 stop11h 34mUnited Airlines

Deal found 2/19

$303

Sat 5/103:31 pmSJO - ONT

1 stop8h 42mMultiple Airlines

Fri 5/301:09 amONT - SJO

1 stop21h 05mMultiple Airlines

Deal found 2/18

$363

Thu 5/19:35 amSJO - ONT

1 stop13h 20mAvianca

Tue 5/611:25 pmONT - SJO

1 stop13h 05mAvianca

Deal found 2/20

$433

Wed 3/1911:59 pmSJO - ONT

1 stop23h 28mAmerican Airlines

Wed 3/2611:59 pmONT - SJO

1 stop21h 00mAmerican Airlines

Deal found 2/19

$477

Sun 2/232:19 pmSJO - ONT

1 stop10h 33mDelta

Tue 3/47:05 amONT - SJO

1 stop13h 07mDelta

Deal found 2/20

$567

Thu 3/1312:26 amSJO - ONT

2 stops23h 58mAlaska Airlines

Wed 3/266:00 amONT - SJO

2 stops17h 12mAlaska Airlines

Deal found 2/19

$756

Mon 4/141:20 pmLIR - ONT

2 stops32h 01mUnited Airlines

Sun 4/206:10 amONT - LIR

1 stop7h 13mUnited Airlines

Deal found 2/20

$502

Sun 2/236:30 amSJO - ONT

2 stops17h 34mBritish Airways

Tue 3/46:59 amONT - SJO

1 stop12h 06mBritish Airways

Deal found 2/20

$1,155

Last-minute flights from Costa Rica to Ontario
Discover last-minute flight deals from Costa Rica to Ontario. Data last updated February 20, 2025 and is based on user searches.

Sun 2/232:19 pmSJO - ONT

1 stop10h 33mDelta

Tue 3/47:05 amONT - SJO

1 stop13h 07mDelta

Deal found 2/20

$567

Sun 2/236:30 amSJO - ONT

2 stops17h 34mBritish Airways

Tue 3/46:59 amONT - SJO

1 stop12h 06mBritish Airways

Deal found 2/20

$1,155

Mon 2/248:45 amSJO - ONT

1 stop15h 14mUnited Airlines

Wed 2/266:00 amONT - SJO

1 stop12h 39mUnited Airlines

Deal found 2/20

$402

Fri 2/2812:50 pmLIR - ONT

1 stop10h 02mUnited Airlines

Thu 3/65:05 amONT - LIR

2 stops11h 25mUnited Airlines

Deal found 2/20

$698

Mon 3/31:26 amSJO - ONT

3 stops22h 01mAlaska Airlines

Mon 3/176:00 amONT - SJO

2 stops15h 59mAlaska Airlines

Deal found 2/19

$976

Tue 3/43:32 pmSJO - ONT

1 stop9h 29mMultiple Airlines

Mon 3/171:09 amONT - SJO

1 stop21h 02mMultiple Airlines

Deal found 2/19

$371

Tue 3/43:10 pmSJO - ONT

1 stop7h 50mAvianca

Tue 3/1811:30 pmONT - SJO

1 stop10h 55mAvianca

Deal found 2/19

$460

Tue 3/43:32 pmSJO - ONT

1 stop9h 29mMultiple Airlines

Mon 3/101:09 amONT - SJO

1 stop21h 02mMultiple Airlines

Deal found 2/20

$372

Wed 3/512:59 amSJO - ONT

1 stop11h 08mAmerican Airlines

Mon 3/1711:59 pmONT - SJO

1 stop21h 00mAmerican Airlines

Deal found 2/19

$596

Wed 3/512:59 amSJO - ONT

1 stop24h 54mAmerican Airlines

Mon 3/1710:27 pmONT - SJO

1 stop13h 53mAmerican Airlines

Deal found 2/20

$598

Wed 3/51:26 amSJO - ONT

3 stops24h 32mAlaska Airlines

Mon 3/176:00 amONT - SJO

2 stops15h 59mAlaska Airlines

Deal found 2/20

$756

Fri 3/712:50 pmLIR - ONT

1 stop10h 07mUnited Airlines

Tue 3/115:05 amONT - LIR

1 stop9h 03mUnited Airlines

Deal found 2/20

$669

One-way flights from Costa Rica to Ontario
Search for one-way flight options from Costa Rica to Ontario. Find affordable one-way fares based on user searches. Data last updated February 20, 2025.

Mon 3/177:45 amSJO - ONT

1 stop15h 14mUnited Airlines

Deal found 2/20

$178

Thu 4/311:55 amSJO - ONT

2 stops26h 47mMultiple Airlines

Deal found 2/20

$182

Tue 3/253:10 pmSJO - ONT

1 stop7h 50mAvianca

Deal found 2/20

$240

Fri 7/43:25 pmLIR - ONT

1 stop30h 57mUnited Airlines

Deal found 2/19

$264

Fri 7/113:45 pmLIR - ONT

1 stop18h 27mAmerican Airlines

Deal found 2/20

$314

Sun 5/1811:59 pmSJO - ONT

2 stops22h 59mAmerican Airlines

Deal found 2/20

$347

Mon 4/286:40 pmLIR - ONT

3 stops19h 57mMultiple Airlines

Deal found 2/20

$398

Mon 4/71:22 amSJO - ONT

3 stops33h 06mAlaska Airlines

Deal found 2/20

$501

Find flights from Costa Rica to Ontario within your budget

Fly from

Fly to

Route

Depart

Return

Price

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Mon 5/26

8:45 am-10:45 pm

1 stop15h 00m

Ontario

Sun 6/1

6:00 am-7:15 am

1 stop24h 15m

$303

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Thu 5/1

9:35 am-9:55 pm

1 stop13h 20m

Ontario

Tue 5/6

11:25 pm-1:30 pm

1 stop13h 05m

$433

LiberiaOntario

LIR - ONT

LIRONT

Liberia

Mon 4/14

1:20 pm-8:21 pm

2 stops32h 01m

Ontario

Sun 4/20

6:10 am-2:23 pm

1 stop7h 13m

$502

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Tue 3/4

3:32 pm-11:01 pm

1 stop9h 29m

Ontario

Thu 3/6

10:30 pm-11:25 am

1 stop10h 55m

$536

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Wed 3/5

12:59 am-11:53 pm

1 stop24h 54m

Ontario

Mon 3/17

10:27 pm-1:20 pm

1 stop13h 53m

$598

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Wed 3/5

1:26 am-11:58 pm

3 stops24h 32m

Ontario

Mon 3/17

6:00 am-10:59 pm

2 stops15h 59m

$756

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Sat 3/8

2:19 pm-10:52 pm

1 stop10h 33m

Ontario

Fri 4/18

10:15 pm-11:55 am

1 stop12h 40m

$791

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Mon 3/17

7:45 am-9:59 pm

1 stop15h 14m

$178

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Thu 4/3

11:55 am-1:42 pm

2 stops26h 47m

$182

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Tue 3/25

3:10 pm-10:00 pm

1 stop7h 50m

$240

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 15 results

Best time to book a flight from Costa Rica to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Costa Rica 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 Costa Rica to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Costa Rica to Ontario (average of $246). Flying from Costa Rica to Ontario in March is currently the most expensive (average of $315). 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 CR to ONT?

When flying from Costa Rica to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Ontario by month

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

To help decide which airline to fly from Costa Rica to Ontario, see what other customers have to say about Alaska Airlines, Delta and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,692 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Alaska Airlines

8.0

Very good

9,692 reviews

Alaska Airlines

8.0

Very good

9,692 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Delta

8.0

Very good

8,220 reviews

Alaska Airlines

8.0

Very good

9,692 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

United Airlines

7.4

Good

8,766 reviews

Alaska Airlines

8.0

Very good

9,692 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,692 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Avianca

6.8

Okay

2,435 reviews

Alaska Airlines

8.0

Very good

9,692 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Related info for your journey

What airport do you fly into for flights to Ontario from Costa Rica?
Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Ontario from Costa Rica.
What are the cheapest airlines to fly from Costa Rica to Ontario one-way?
The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $178. However, be on the lookout for offers from Avianca and American Airlines, as they are both options that can get you from Costa Rica to Ontario for a low price.
Can I find deals for flights from Costa Rica to Ontario that include hotel bookings?
Yes. In addition to deals on Costa Rica to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Costa Rica to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Costa Rica to Ontario.
Can I find deals for business class flights from Costa Rica to Ontario?
Yes. Cheapflights offers flight deals from Costa Rica to Ontario 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 Costa Rica to Ontario?
Currently, August is the cheapest month in which you can book a flight from Costa Rica to Ontario (average of $246). Flying from Costa Rica to Ontario in March is currently the most expensive (average of $315). 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

Top 3 airlines flying from Costa Rica to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Avianca	Cheapest$308	Average$418	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$349	Average$478	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$408	Average$614	FlexibilityNo cancel fee	On-time71%

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$178+ Cheap flights from Costa Rica to Ontario (ONT)

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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Costa Rica to Ontario with Cheapflights

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Cheap flight deals from Costa Rica to Ontario

Keep the following information in mind while searching for Costa Rica to Ontario flight deals. Data was last updated February 20, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Costa Rica to Ontario

Cheapest flights from Costa Rica to OntarioExplore the most affordable flight options available from Costa Rica to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Explore the most affordable flight options available from Costa Rica to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Find flights from Costa Rica to Ontario within your budget

Best time to book a flight from Costa Rica to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Costa Rica with our price prediction graph.

Travel insights for flights from Costa Rica to Ontario

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

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

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

Find hourly flight availability from Costa Rica to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

Rainfall in Ontario by month

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

Temperature in Ontario by month

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

Reviews of airlines servicing Ontario

To help decide which airline to fly from Costa Rica to Ontario, see what other customers have to say about Alaska Airlines, Delta and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Costa Rica to Ontario. 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 into for flights to Ontario from Costa Rica?

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

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

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

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

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

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 Costa Rica to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Costa Rica to Ontario

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Travel Smart

Cheapest flights from Costa Rica to Ontario
Explore the most affordable flight options available from Costa Rica to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.