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 35% 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 6h 16m on average, while flying from San José to Los Angeles is 6h 17m on average. Los Angeles is the most popular airport in Ontario.

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

Avianca, United Airlines, and American Airlines are the most popular carriers operating 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 is 1 operator available for flights from Costa Rica to Ontario Airport as of October 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.

$140 Cheap Flights from Costa Rica to Ontario in 2025/26

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3:05 pm - 9:55 pmSJO-ONT

7h 50m1 stop

11:30 pm - 11:25 amONT-SJO

10h 55m1 stop

$241Avianca

Find Deal

Thu, Oct 23 - Sat, Oct 25

9:35 am - 9:55 pmSJO-ONT

13h 20m1 stop

10:30 pm - 11:25 amONT-SJO

10h 55m1 stop

$257Avianca

Find Deal

Sat, Nov 1 - Sat, Nov 8

3:05 pm - 9:55 pmSJO-ONT

7h 50m1 stop

10:30 pm - 11:25 amONT-SJO

10h 55m1 stop

$260Avianca

Find Deal

Thu, Oct 30 - Thu, Nov 13

3:05 pm - 8:55 pmSJO-ONT

7h 50m1 stop

10:30 pm - 11:25 amONT-SJO

10h 55m1 stop

$262Avianca

Find Deal

Thu, Feb 19 - Tue, Feb 24

7:45 am - 8:44 pmSJO-ONT

13h 59m2 stops

1:40 pm - 1:15 pmONT-SJO

21h 35m2 stops

$267United Airlines

Find Deal

Sat, Nov 1 - Tue, Nov 18

6:22 am - 6:20 pmSJO-ONT

13h 58m2 stops

3:04 pm - 1:39 pmONT-SJO

20h 35m2 stops

$285American Airlines

Find Deal

Sat, Nov 15 - Sat, Dec 6

8:40 am - 10:51 pmSJO-ONT

15h 11m1 stop

6:38 pm - 7:32 amONT-SJO

11h 54m1 stop

$321United Airlines

Find Deal

Mon, Oct 27 - Fri, Oct 31

2:59 pm - 9:57 amSJO-ONT

20h 58m1 stop

10:34 pm - 2:02 pmONT-SJO

13h 28m1 stop

$335American Airlines

Find Deal

Sat, Nov 15 - Sat, Dec 6

9:35 am - 8:55 pmSJO-ONT

13h 20m1 stop

1:04 am - 11:56 pmONT-SJO

20h 52m1 stop

$519Multiple Airlines

Find Deal

Sat, Feb 21 - Sat, Mar 7

2:31 pm - 11:04 pmSJO-ONT

10h 33m1 stop

7:05 am - 10:07 pmONT-SJO

13h 02m1 stop

$520Delta

Find Deal

Fri, Nov 21 - Sat, Nov 29

Avianca flights from Costa Rica to Ontario

Our best Avianca deals on Costa Rica to Ontario flight tickets

Avianca

Oct 23

SJO3:05 pmSan José Juan Santamaria Intl

7h 50m

1 stop

ONT9:55 pmOntario

Oct 25

ONT11:30 pmOntario

10h 55m

1 stop

SJO11:25 amSan José Juan Santamaria Intl

$241

Find similar

Avianca

Nov 1

SJO9:35 amSan José Juan Santamaria Intl

13h 20m

1 stop

ONT9:55 pmOntario

Nov 8

ONT10:30 pmOntario

10h 55m

1 stop

SJO11:25 amSan José Juan Santamaria Intl

$257

Find similar

Avianca

Oct 30

SJO3:05 pmSan José Juan Santamaria Intl

7h 50m

1 stop

ONT9:55 pmOntario

Nov 13

ONT10:30 pmOntario

10h 55m

1 stop

SJO11:25 amSan José Juan Santamaria Intl

$260

Find similar

United Airlines flights from Costa Rica to Ontario

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

United Airlines

Nov 1

SJO7:45 amSan José Juan Santamaria Intl

13h 59m

2 stops

ONT8:44 pmOntario

Nov 18

ONT1:40 pmOntario

21h 35m

2 stops

SJO1:15 pmSan José Juan Santamaria Intl

$267

Find similar

United Airlines

Oct 27

SJO8:40 amSan José Juan Santamaria Intl

15h 11m

1 stop

ONT10:51 pmOntario

Oct 31

ONT6:38 pmOntario

11h 54m

1 stop

SJO7:32 amSan José Juan Santamaria Intl

$321

Find similar

United Airlines

Jan 31

SJO8:45 amSan José Juan Santamaria Intl

15h 13m

1 stop

ONT9:58 pmOntario

Feb 2

ONT1:53 pmOntario

16h 39m

1 stop

SJO8:32 amSan José Juan Santamaria Intl

$330

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Thu 10/23

3:05 pm-9:55 pm

1 stop7h 50m

Ontario

Sat 10/25

11:30 pm-11:25 am

1 stop10h 55m

$241

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Sat 11/1

9:35 am-9:55 pm

1 stop13h 20m

Ontario

Sat 11/8

10:30 pm-11:25 am

1 stop10h 55m

$257

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Thu 10/30

3:05 pm-9:55 pm

1 stop7h 50m

Ontario

Thu 11/13

10:30 pm-11:25 am

1 stop10h 55m

$260

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Thu 2/19

3:05 pm-8:55 pm

1 stop7h 50m

Ontario

Tue 2/24

10:30 pm-11:25 am

1 stop10h 55m

$262

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Sat 11/1

7:45 am-8:44 pm

2 stops13h 59m

Ontario

Tue 11/18

1:40 pm-1:15 pm

2 stops21h 35m

$267

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Sat 11/15

6:22 am-6:20 pm

2 stops13h 58m

Ontario

Sat 12/6

3:04 pm-1:39 pm

2 stops20h 35m

$285

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Mon 10/27

8:40 am-10:51 pm

1 stop15h 11m

Ontario

Fri 10/31

6:38 pm-7:32 am

1 stop11h 54m

$321

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Sat 11/15

2:59 pm-9:57 am

1 stop20h 58m

Ontario

Sat 12/6

10:34 pm-2:02 pm

1 stop13h 28m

$335

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Sat 2/21

9:35 am-8:55 pm

1 stop13h 20m

Ontario

Sat 3/7

1:04 am-11:56 pm

1 stop20h 52m

$519

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Fri 11/21

2:31 pm-11:04 pm

1 stop10h 33m

Ontario

Sat 11/29

7:05 am-10:07 pm

1 stop13h 02m

$520

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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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What is the cheapest month to fly to Ontario?

In general, May 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 $387. If you aren’t able to travel during the month of May, then book flights to Ontario from Costa Rica during September instead. Flights to Ontario in September, while not as cheap as those in May, still average around $388.

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 $327 on momondo.

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

You could potentially save up to 44% 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

Direct flights	None

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 October 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 $267	Free Cancellation	Rating 7.4 8,974 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.

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Flights to New Yorkfrom $49

Flights to Los Angelesfrom $38

Flights to Miamifrom $49

Flights to Chicagofrom $49

Flights to Orlandofrom $63

Flights to Las Vegasfrom $38

Flights to San Franciscofrom $38

Flights to Washington, D.C.from $48

Flights to Bostonfrom $61

Flights to Atlantafrom $48

Flights to Dallasfrom $57

Flights to Seattlefrom $75

Fly to other destinations from Costa Rica

Flights from San José Juan Santamaria Intl to New York John F Kennedy Intl

Flights from San José Juan Santamaria Intl to Orlando

Flights from San José Juan Santamaria Intl to Fort Lauderdale

Flights from Liberia to Newark

Flights from San José Juan Santamaria Intl to Atlanta Hartsfield-Jackson

Flights from San José Juan Santamaria Intl to Miami

Cheap flights from Costa Rica to Los Angeles from $140

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 10/23. 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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Our best Avianca deals on Costa Rica to Ontario flight tickets

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

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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

What is the cheapest month to fly to Ontario?

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

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

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

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

You could potentially save up to 44% on your flight if you consider stops on a Costa Rica to Ontario flight.

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

Avianca, United Airlines, and American Airlines are the most popular carriers operating from Costa Rica to Ontario

What airlines fly to Ontario?

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 16m on average, while flying from San José to Los Angeles is 6h 17m on average. Los Angeles is the most popular airport in 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

Direct flights

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

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

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

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

Best airlines flying from Costa Rica to Ontario

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

Why use momondo?

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

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

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

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

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.

Find better results for your trip to the United States

Airports servicing California