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

United Airlines, Avianca, and American Airlines 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 32% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 11 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 49m on average, while flying from San José to Los Angeles is 6h 20m 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 July 2025.

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.

$186 Cheap Flights from Costa Rica to Ontario in 2025

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Find the cheapest flights from Costa Rica to Los Angeles

Round-trip

One-way

Last minute

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

9:35 am - 9:55 pmSJO-ONT

13h 20m1 stop

11:25 pm - 11:15 amONT-SJO

10h 50m1 stop

$318Avianca

Find Deal

Thu, Sep 11 - Sat, Sep 20

8:37 am - 8:33 pmSJO-ONT

12h 56m1 stop

6:50 pm - 7:15 amONT-SJO

11h 25m1 stop

$324United Airlines

Find Deal

Tue, Sep 16 - Mon, Sep 22

9:35 am - 9:55 pmSJO-ONT

13h 20m1 stop

11:25 pm - 11:15 amONT-SJO

10h 50m1 stop

$348Avianca

Find Deal

Tue, Sep 2 - Sat, Sep 6

9:35 am - 9:55 pmSJO-ONT

13h 20m1 stop

11:25 pm - 11:15 amONT-SJO

10h 50m1 stop

$349Avianca

Find Deal

Thu, Aug 28 - Sat, Aug 30

1:35 pm - 10:23 pmSJO-ONT

9h 48m1 stop

1:15 pm - 12:08 pmONT-SJO

21h 53m2 stops

$354Delta

Find Deal

Thu, Sep 25 - Thu, Oct 2

1:45 pm - 10:05 amSJO-ONT

21h 20m2 stops

4:45 pm - 5:57 pmONT-SJO

24h 12m2 stops

$360American Airlines

Find Deal

Sat, Sep 13 - Tue, Sep 23

7:55 am - 9:25 pmSJO-ONT

14h 30m1 stop

6:36 pm - 7:15 amONT-SJO

11h 39m1 stop

$365United Airlines

Find Deal

Wed, Sep 24 - Thu, Oct 2

1:45 pm - 11:55 amSJO-ONT

23h 10m2 stops

10:35 pm - 7:42 pmONT-SJO

20h 07m2 stops

$376American Airlines

Find Deal

Sat, Sep 13 - Tue, Sep 23

1:21 pm - 12:16 pmSJO-ONT

23h 55m2 stops

10:59 pm - 12:52 pmONT-SJO

11h 53m1 stop

$467Delta

Find Deal

Fri, Oct 31 - Fri, Nov 14

4:13 pm - 11:12 pmSJO-ONT

8h 59m1 stop

1:02 am - 11:53 pmONT-SJO

20h 51m1 stop

$520

Find Deal

Mon, Nov 24 - Sat, Nov 29

American Airlines flights from Costa Rica to Ontario

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

American Airlines

Sep 13

SJO1:45 pmSan José Juan Santamaria Intl

21h 20m

2 stops

ONT10:05 amOntario

Sep 23

ONT4:45 pmOntario

24h 12m

2 stops

SJO5:57 pmSan José Juan Santamaria Intl

$360

Find similar

American Airlines

Sep 13

SJO1:45 pmSan José Juan Santamaria Intl

23h 10m

2 stops

ONT11:55 amOntario

Sep 23

ONT10:35 pmOntario

20h 07m

2 stops

SJO7:42 pmSan José Juan Santamaria Intl

$376

Find similar

American Airlines

Aug 15

SJO2:40 pmSan José Juan Santamaria Intl

31h 59m

2 stops

ONT9:39 pmOntario

Aug 25

ONT11:59 pmOntario

19h 16m

2 stops

SJO8:15 pmSan José Juan Santamaria Intl

$397

Find similar

United Airlines flights from Costa Rica to Ontario

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

United Airlines

Sep 16

SJO8:37 amSan José Juan Santamaria Intl

12h 56m

1 stop

ONT8:33 pmOntario

Sep 22

ONT6:50 pmOntario

11h 25m

1 stop

SJO7:15 amSan José Juan Santamaria Intl

$324

Find similar

United Airlines

Aug 1

SJO5:30 amSan José Juan Santamaria Intl

17h 07m

1 stop

ONT9:37 pmOntario

Aug 9

ONT6:00 amOntario

27h 11m

1 stop

SJO10:11 amSan José Juan Santamaria Intl

$356

Find similar

United Airlines

Sep 24

SJO7:55 amSan José Juan Santamaria Intl

14h 30m

1 stop

ONT9:25 pmOntario

Oct 2

ONT6:36 pmOntario

11h 39m

1 stop

SJO7:15 amSan José Juan Santamaria Intl

$365

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Thu 9/11

9:35 am-9:55 pm

1 stop13h 20m

Ontario

Sat 9/20

11:25 pm-11:15 am

1 stop10h 50m

$318

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Tue 9/16

8:37 am-8:33 pm

1 stop12h 56m

Ontario

Mon 9/22

6:50 pm-7:15 am

1 stop11h 25m

$324

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Tue 9/2

9:35 am-9:55 pm

1 stop13h 20m

Ontario

Sat 9/6

11:25 pm-11:15 am

1 stop10h 50m

$348

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Thu 8/28

9:35 am-9:55 pm

1 stop13h 20m

Ontario

Sat 8/30

11:25 pm-11:15 am

1 stop10h 50m

$349

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Thu 9/25

1:35 pm-10:23 pm

1 stop9h 48m

Ontario

Thu 10/2

1:15 pm-12:08 pm

2 stops21h 53m

$354

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Sat 9/13

1:45 pm-10:05 am

2 stops21h 20m

Ontario

Tue 9/23

4:45 pm-5:57 pm

2 stops24h 12m

$360

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Wed 9/24

7:55 am-9:25 pm

1 stop14h 30m

Ontario

Thu 10/2

6:36 pm-7:15 am

1 stop11h 39m

$365

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Sat 9/13

1:45 pm-11:55 am

2 stops23h 10m

Ontario

Tue 9/23

10:35 pm-7:42 pm

2 stops20h 07m

$376

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Fri 10/31

1:21 pm-12:16 pm

2 stops23h 55m

Ontario

Fri 11/14

10:59 pm-12:52 pm

1 stop11h 53m

$467

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Mon 11/24

4:13 pm-11:12 pm

1 stop8h 59m

Ontario

Sat 11/29

1:02 am-11:53 pm

1 stop20h 51m

$520

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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, September 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 $373. If you aren’t able to travel during the month of September, then book flights to Ontario from Costa Rica during May instead. Flights to Ontario in May, while not as cheap as those in September, still average around $387.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Tuesday when prices can be found for as low as $418. This is often the case because there is less demand to fly during this day of the week. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Costa Rica to Ontario for around $660.

What is the cheapest time of day to depart on your flight to Ontario?

In the afternoon is the cheapest time of day to fly from Costa Rica to Ontario when you can find flight prices for as low as $265. Flying to Ontario in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $645 on average. Flights to Ontario from Costa Rica at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 $492 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 $216 on momondo.

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

You could potentially save up to 36% 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

Best Price Found	$186
Fastest flight time	7h 50m
Direct flights	None
Airports in Ontario	1 airport

The best one-way flight to Ontario from Costa Rica in the past 72 hours is $186. The best round-trip flight deal from Costa Rica to Ontario found on momondo in the last 72 hours is $318.

The fastest flight from Costa Rica to Ontario takes 7h 50m

There are no direct flights from Costa Rica to Ontario. Popular non-direct routes for this connection are San José Juan Santamaria Intl Airport - Ontario Airport and Liberia Airport - Ontario Airport.

There is 1 airport near Ontario: Ontario (ONT)

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 July 2025.
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 $324	Free Cancellation	Rating 7.4 8,900 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.