What is the cheapest airline that flies from Costa Rica to Ontario?

United Airlines is the most popular carrier operating from Costa Rica to Ontario

What airlines fly to Ontario?

Alaska Airlines, United Airlines and Avianca are the top three most popular airlines that fly to Ontario from Costa Rica according to our data. Alaska Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 8 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Ontario?

Average flight duration from Costa Rica to Ontario depends on which airport you fly into and out of. Flying from Liberia to Los Angeles is 5h 48m on average, while flying from San José to Los Angeles is 6h 14m on average. Los Angeles is the most popular airport in Ontario.

When did momondo last update prices for flights from Costa Rica to Ontario Airport?

Prices for flights from Costa Rica to Ontario Airport refresh daily.

How many operators does momondo search for flights from Costa Rica to Ontario Airport?

There are 2 operators available for flights from Costa Rica to Ontario Airport as of April 2026.

How old do you have to be to fly from Costa Rica to Ontario Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Costa Rica to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$254 Cheap Flights from Costa Rica to Ontario in 2026

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Find the cheapest flights from Costa Rica to Los Angeles

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8:45 am - 6:11 pm

SJO

ONT

10h 26m

1 stop

5:45 am - 7:37 pm

ONT

SJO

12h 52m

1 stop

$443United Airlines

Thu, Sep 3 - Wed, Sep 16

8:45 am - 5:52 pm

SJO

ONT

10h 07m

1 stop

1:50 pm - 7:15 am

ONT

SJO

16h 25m

1 stop

$449United Airlines

Tue, May 19 - Tue, May 26

8:45 am - 5:52 pm

SJO

ONT

10h 07m

1 stop

6:59 pm - 7:15 am

ONT

SJO

11h 16m

1 stop

$458United Airlines

Thu, May 7 - Mon, May 11

8:45 am - 6:11 pm

SJO

ONT

10h 26m

1 stop

1:49 pm - 7:15 am

ONT

SJO

16h 26m

1 stop

$465United Airlines

Fri, Sep 18 - Thu, Sep 24

8:45 am - 5:52 pm

SJO

ONT

10h 07m

1 stop

1:30 pm - 7:37 pm

ONT

SJO

29h 07m

2 stops

$469United Airlines

Thu, May 7 - Mon, May 11

11:59 pm - 6:22 pm

SJO

ONT

19h 23m

2 stops

11:59 pm - 1:52 pm

ONT

SJO

12h 53m

1 stop

$474American Airlines

Thu, Jun 25 - Tue, Aug 18

2:00 pm - 8:47 pm

LIR

ONT

31h 47m

1 stop

10:41 pm - 12:40 pm

ONT

LIR

12h 59m

1 stop

$562JetBlue

Wed, Jun 3 - Tue, Jun 9

2:00 pm - 8:47 pm

LIR

ONT

31h 47m

1 stop

10:41 pm - 12:40 pm

ONT

LIR

12h 59m

1 stop

$594JetBlue

Wed, Jun 3 - Mon, Jun 8

1:20 pm - 9:58 pm

LIR

ONT

9h 38m

1 stop

5:00 am - 3:08 pm

ONT

LIR

9h 08m

1 stop

$623Multiple Airlines

Wed, Oct 14 - Sun, Oct 25

1:20 pm - 9:58 pm

LIR

ONT

9h 38m

1 stop

6:30 pm - 3:19 pm

ONT

LIR

19h 49m

1 stop

$654Multiple Airlines

Sun, May 10 - Tue, May 26

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United Airlines flights from Costa Rica to Ontario

Our best United Airlines deals on Costa Rica to Ontario flight tickets

United Airlines

Sep 3

SJO8:45 amSan José Juan Santamaria Intl

10h 26m

1 stop

ONT6:11 pmOntario

Sep 16

ONT5:45 amOntario

12h 52m

1 stop

SJO7:37 pmSan José Juan Santamaria Intl

$443

United Airlines

May 19

SJO8:45 amSan José Juan Santamaria Intl

10h 07m

1 stop

ONT5:52 pmOntario

May 26

ONT1:50 pmOntario

16h 25m

1 stop

SJO7:15 amSan José Juan Santamaria Intl

$449

United Airlines

May 7

SJO8:45 amSan José Juan Santamaria Intl

10h 07m

1 stop

ONT5:52 pmOntario

May 11

ONT6:59 pmOntario

11h 16m

1 stop

SJO7:15 amSan José Juan Santamaria Intl

$458

American Airlines flights from Costa Rica to Ontario

Our best American Airlines deals on Costa Rica to Ontario flight tickets

American Airlines

Apr 23

SJO2:08 pmSan José Juan Santamaria Intl

9h 28m

1 stop

ONT10:36 pmOntario

Apr 30

ONT10:59 amOntario

9h 37m

1 stop

SJO9:36 pmSan José Juan Santamaria Intl

$450

American Airlines

May 3

SJO11:35 pmSan José Juan Santamaria Intl

20h 02m

1 stop

ONT6:37 pmOntario

May 7

ONT6:00 amOntario

14h 36m

1 stop

SJO9:36 pmSan José Juan Santamaria Intl

$470

American Airlines

Jun 25

SJO11:59 pmSan José Juan Santamaria Intl

19h 23m

2 stops

ONT6:22 pmOntario

Aug 18

ONT11:59 pmOntario

12h 53m

1 stop

SJO1:52 pmSan José Juan Santamaria Intl

$474

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Thu 9/3

8:45 am-6:11 pm

1 stop10h 26m

Ontario

Wed 9/16

5:45 am-7:37 pm

1 stop12h 52m

$443

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Tue 5/19

8:45 am-5:52 pm

1 stop10h 07m

Ontario

Tue 5/26

1:50 pm-7:15 am

1 stop16h 25m

$449

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Thu 5/7

8:45 am-5:52 pm

1 stop10h 07m

Ontario

Mon 5/11

6:59 pm-7:15 am

1 stop11h 16m

$458

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Fri 9/18

8:45 am-6:11 pm

1 stop10h 26m

Ontario

Thu 9/24

1:49 pm-7:15 am

1 stop16h 26m

$465

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Thu 5/7

8:45 am-5:52 pm

1 stop10h 07m

Ontario

Mon 5/11

1:30 pm-7:37 pm

2 stops29h 07m

$469

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Thu 6/25

11:59 pm-6:22 pm

2 stops19h 23m

Ontario

Tue 8/18

11:59 pm-1:52 pm

1 stop12h 53m

$474

LiberiaOntario

LIR - ONT

LIRONT

Liberia

Wed 6/3

2:00 pm-8:47 pm

1 stop31h 47m

Ontario

Tue 6/9

10:41 pm-12:40 pm

1 stop12h 59m

$562

LiberiaOntario

LIR - ONT

LIRONT

Liberia

Wed 6/3

2:00 pm-8:47 pm

1 stop31h 47m

Ontario

Mon 6/8

10:41 pm-12:40 pm

1 stop12h 59m

$594

Quickest round-trip

LiberiaOntario

LIR - ONT

LIRONT

Liberia

Wed 10/14

1:20 pm-9:58 pm

1 stop9h 38m

Ontario

Sun 10/25

5:00 am-3:08 pm

1 stop9h 08m

$623

LiberiaOntario

LIR - ONT

LIRONT

Liberia

Sun 5/10

1:20 pm-9:58 pm

1 stop9h 38m

Ontario

Tue 5/26

6:30 pm-3:19 pm

1 stop19h 49m

$654

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Costa Rica to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

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Other information

What is the cheapest month to fly to Ontario?

In general, January is the cheapest month to fly from Costa Rica to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $322. If you aren’t able to travel during the month of January, then book flights to Ontario from Costa Rica during October instead. Flights to Ontario in October, while not as cheap as those in January, still average around $368.

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

You are more likely to see cheaper flights to Ontario from Costa Rica when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $400 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Costa Rica for as low as $331 on momondo.

Can stopping save me money on Costa Rica to Ontario flights?

You could potentially save up to 24% on your flight if you consider stops on a Costa Rica to Ontario flight.

Cheap Costa Rica to Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Costa Rica to Ontario

Fastest flight time	7h 35m
Direct flights	Fri and Sun
Airports in Ontario	1 airport

The fastest flight from Costa Rica to Ontario takes 7h 35m

Direct flights go from Costa Rica to Ontario on Friday and Sunday. There are no airlines offering direct flights.

There is 1 airport in Ontario. From Costa Rica there are direct flights to Ontario (ONT).

Search flight deals

Frequently asked questions about flying from Costa Rica to Ontario

When did momondo last update prices for flights from Costa Rica to Ontario Airport?
Prices for flights from Costa Rica to Ontario Airport refresh daily.
How many operators does momondo search for flights from Costa Rica to Ontario Airport?
There are 2 operators available for flights from Costa Rica to Ontario Airport as of April 2026.
How old do you have to be to fly from Costa Rica to Ontario Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Costa Rica to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Costa Rica to Ontario

Compare and see reviews for airlines that fly from Costa Rica to Ontario with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $267	Free Cancellation	Rating 7.4 9,612 reviews		Search United Airlines flights
Avianca	PriceFrom $361	Free Cancellation	Rating 6.5 2,514 reviews		Search Avianca flights

Why use momondo?

Why should I use momondo to find a flight deal from Costa Rica to Ontario?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Costa Rica.

Can I find flights from Costa Rica to Ontario with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Costa Rica to Ontario flights to just show those with flexible booking policies.

How can momondo help me find flights from Costa Rica to Ontario?

Once all potential Costa Rica to Ontario flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Costa Rica to Ontario right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Costa Rica to Ontario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Costa Rica to Los Angeles from $248

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Costa Rica to Los Angeles departing on 9/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Costa Rica to Ontario

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How to get the cheapest flight ticket from Costa Rica to Ontario

What is the cheapest month to fly to Ontario?

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Can stopping save me money on Costa Rica to Ontario flights?

What is the cheapest airline that flies from Costa Rica to Ontario?

What airlines fly to Ontario?

How long does it take to fly to Ontario?

Cheap Costa Rica to Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Costa Rica to Ontario

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Compare and see reviews for airlines that fly from Costa Rica to Ontario with momondo

Why use momondo?

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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