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

United Airlines, American Airlines, and Southwest are the most popular carriers 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 42% 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 6h 08m on average, while flying from San José to Los Angeles is 6h 17m 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 is 1 operator available for flights from Costa Rica to Ontario Airport as of January 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.

$169 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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Recent round-trip flight deals from Costa Rica to Los Angeles

Enter your travel dates to find the best prices.

9:40 am - 10:53 pm

SJO

ONT

15h 13m

1 stop

8:00 am - 1:15 pm

ONT

SJO

27h 15m

1 stop

$290United Airlines

Thu, Jan 29 - Tue, Feb 3

9:40 am - 10:57 pm

SJO

ONT

15h 17m

1 stop

1:53 pm - 8:32 am

ONT

SJO

16h 39m

1 stop

$299United Airlines

Thu, Feb 26 - Sat, Feb 28

8:45 am - 12:22 pm

SJO

ONT

28h 37m

1 stop

6:00 am - 7:15 am

ONT

SJO

24h 15m

1 stop

$301United Airlines

Fri, May 1 - Sat, Jun 6

8:45 am - 9:58 pm

SJO

ONT

15h 13m

1 stop

1:53 pm - 8:32 am

ONT

SJO

16h 39m

1 stop

$303United Airlines

Sun, Feb 1 - Sat, Feb 7

8:45 am - 10:59 pm

SJO

ONT

15h 14m

1 stop

6:59 pm - 7:15 am

ONT

SJO

11h 16m

1 stop

$310United Airlines

Fri, May 1 - Fri, May 15

1:20 pm - 6:07 pm

SJO

ONT

29h 47m

1 stop

6:15 am - 7:32 am

ONT

SJO

24h 17m

1 stop

$313United Airlines

Mon, Mar 9 - Mon, Mar 23

7:55 am - 12:38 pm

SJO

ONT

29h 43m

2 stops

10:37 am - 7:15 am

ONT

SJO

19h 38m

1 stop

$315United Airlines

Fri, May 1 - Fri, May 15

1:20 pm - 12:18 pm

SJO

ONT

23h 58m

2 stops

1:50 pm - 7:39 pm

ONT

SJO

28h 49m

2 stops

$317United Airlines

Mon, Mar 9 - Mon, Mar 23

8:45 am - 10:59 pm

SJO

ONT

15h 14m

1 stop

6:59 pm - 7:15 am

ONT

SJO

11h 16m

1 stop

$352Multiple Airlines

Fri, May 1 - Mon, May 4

11:20 am - 2:32 pm

LIR

ONT

28h 12m

3 stops

3:26 pm - 6:20 am

ONT

LIR

13h 54m

2 stops

$686Alaska Airlines

Fri, May 1 - Mon, May 4

United Airlines flights from Costa Rica to Ontario

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

United Airlines

Jan 29

SJO8:45 amSan José Juan Santamaria Intl

16h 08m

2 stops

ONT10:53 pmOntario

Feb 4

ONT1:53 pmOntario

16h 39m

1 stop

SJO8:32 amSan José Juan Santamaria Intl

$290

United Airlines

Feb 26

SJO9:40 amSan José Juan Santamaria Intl

15h 17m

1 stop

ONT10:57 pmOntario

Feb 28

ONT1:53 pmOntario

16h 39m

1 stop

SJO8:32 amSan José Juan Santamaria Intl

$299

United Airlines

May 1

SJO7:55 amSan José Juan Santamaria Intl

29h 27m

2 stops

ONT12:22 pmOntario

May 5

ONT1:40 pmOntario

21h 41m

2 stops

SJO12:21 pmSan José Juan Santamaria Intl

$301

Avianca flights from Costa Rica to Ontario

Our best Avianca deals on Costa Rica to Ontario flight tickets

Avianca

May 9

SJO3:10 pmSan José Juan Santamaria Intl

7h 35m

1 stop

ONT9:45 pmOntario

May 16

ONT11:35 pmOntario

8h 10m

1 stop

SJO8:45 amSan José Juan Santamaria Intl

$332

Avianca

May 1

SJO8:45 amSan José Juan Santamaria Intl

15h 14m

1 stop

ONT10:59 pmOntario

May 10

ONT6:00 amOntario

24h 15m

1 stop

SJO7:15 amSan José Juan Santamaria Intl

$377

Avianca

Apr 30

SJO3:10 pmSan José Juan Santamaria Intl

7h 35m

1 stop

ONT9:45 pmOntario

May 7

ONT11:35 pmOntario

10h 55m

1 stop

SJO11:30 amSan José Juan Santamaria Intl

$387

Fly from

Fly to

Route

Depart

Return

Price

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Thu 1/29

9:40 am-10:53 pm

1 stop15h 13m

Ontario

Tue 2/3

8:00 am-1:15 pm

1 stop27h 15m

$290

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Thu 2/26

9:40 am-10:57 pm

1 stop15h 17m

Ontario

Sat 2/28

1:53 pm-8:32 am

1 stop16h 39m

$299

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Fri 5/1

8:45 am-12:22 pm

1 stop28h 37m

Ontario

Sat 6/6

6:00 am-7:15 am

1 stop24h 15m

$301

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Sun 2/1

8:45 am-9:58 pm

1 stop15h 13m

Ontario

Sat 2/7

1:53 pm-8:32 am

1 stop16h 39m

$303

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Fri 5/1

8:45 am-10:59 pm

1 stop15h 14m

Ontario

Fri 5/15

6:59 pm-7:15 am

1 stop11h 16m

$310

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Mon 3/9

1:20 pm-6:07 pm

1 stop29h 47m

Ontario

Mon 3/23

6:15 am-7:32 am

1 stop24h 17m

$313

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Fri 5/1

7:55 am-12:38 pm

2 stops29h 43m

Ontario

Fri 5/15

10:37 am-7:15 am

1 stop19h 38m

$315

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Mon 3/9

1:20 pm-12:18 pm

2 stops23h 58m

Ontario

Mon 3/23

1:50 pm-7:39 pm

2 stops28h 49m

$317

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Fri 5/1

8:45 am-10:59 pm

1 stop15h 14m

Ontario

Mon 5/4

6:59 pm-7:15 am

1 stop11h 16m

$352

LiberiaOntario

LIR - ONT

LIRONT

Liberia

Fri 5/1

11:20 am-2:32 pm

3 stops28h 12m

Ontario

Mon 5/4

3:26 pm-6:20 am

2 stops13h 54m

$686

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Airlines

Other information

What is the cheapest month to fly to Ontario?

In general, October 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 $368. If you aren’t able to travel during the month of October, then book flights to Ontario from Costa Rica during November instead. Flights to Ontario in November, while not as cheap as those in October, still average around $383.

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 $419 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 $330 on momondo.

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

You could potentially save up to 5% 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	9h 28m
Direct flights	None

The fastest flight from Costa Rica to Ontario takes 9h 28m

There are no direct flights from Costa Rica to Ontario. There are no popular flight routes from Costa Rica to Ontario.

Search flight deals

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 is 1 operator available for flights from Costa Rica to Ontario Airport as of January 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 9,177 reviews		Search United Airlines 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.