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Cheap flights from Costa Rica to Los Angeles from $146

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 3/5. 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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0 bags

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Find the cheapest flights from Costa Rica to Los Angeles

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

Enter your travel dates to find the best prices.
Avianca Logo
3:05 pm - 8:55 pmSJO-ONT
7h 50m1 stop
Avianca Logo
10:30 pm - 11:25 amONT-SJO
10h 55m1 stop
$261Avianca
Find Deal
jue., feb. 19 - mar., feb. 24
Avianca Logo
3:05 pm - 9:55 pmSJO-ONT
7h 50m1 stop
Avianca Logo
11:25 pm - 11:15 amONT-SJO
10h 50m1 stop
$265Avianca
Find Deal
mar., abr. 14 - sáb., abr. 18
United Airlines Logo
9:40 am - 10:53 pmSJO-ONT
15h 13m1 stop
United Airlines Logo
1:53 pm - 8:32 amONT-SJO
16h 39m1 stop
$267United Airlines
Find Deal
mar., ene. 27 - lun., feb. 2
Avianca Logo
5:05 am - 9:55 pmSJO-ONT
17h 50m1 stop
Avianca Logo
11:25 pm - 11:15 amONT-SJO
10h 50m1 stop
$275Avianca
Find Deal
sáb., abr. 18 - mar., abr. 21
American Airlines Logo
3:16 pm - 8:48 amSJO-ONT
19h 32m2 stops
American Airlines Logo
7:30 pm - 12:38 pmONT-SJO
15h 08m2 stops
$281American Airlines
Find Deal
lun., dic. 22 - lun., ene. 19
American Airlines Logo
6:20 am - 1:55 pmSJO-ONT
9h 35m1 stop
American Airlines Logo
11:59 pm - 9:55 pmONT-SJO
20h 56m1 stop
$282American Airlines
Find Deal
vie., dic. 12 - mié., abr. 22
United Airlines Logo
9:40 am - 5:43 pmSJO-ONT
10h 03m1 stop
United Airlines Logo
1:53 pm - 1:15 pmONT-SJO
45h 22m2 stops
$300United Airlines
Find Deal
jue., ene. 22 - sáb., ene. 31
Delta Logo
3:05 pm - 12:16 pmLIR-ONT
23h 11m2 stops
Delta Logo
10:30 pm - 12:50 pmONT-LIR
12h 20m1 stop
$522Delta
Find Deal
mié., ene. 14 - lun., ene. 19
Delta Logo
3:05 pm - 12:16 pmLIR-ONT
23h 11m2 stops
Delta Logo
10:30 pm - 12:50 pmONT-LIR
12h 20m1 stop
$543Delta
Find Deal
mié., ene. 14 - sáb., ene. 17
JetBlue Logo
1:45 pm - 10:09 pmLIR-ONT
33h 24m1 stop
JetBlue Logo
11:25 pm - 12:15 pmONT-LIR
11h 50m1 stop
$557JetBlue
Find Deal
lun., may. 18 - sáb., may. 23

American Airlines flights from Costa Rica to Ontario

Our best American Airlines deals on Costa Rica to Ontario flight tickets
American Airlines
Dec 22
SJO3:16 pmSan José Juan Santamaria Intl
19h 32m
2 stops
ONT8:48 amOntario
Jan 19
ONT7:30 pmOntario
15h 08m
2 stops
SJO12:38 pmSan José Juan Santamaria Intl
$281
Find similar
American Airlines
Dec 12
SJO6:20 amSan José Juan Santamaria Intl
9h 35m
1 stop
ONT1:55 pmOntario
Apr 22
ONT11:59 pmOntario
20h 56m
1 stop
SJO9:55 pmSan José Juan Santamaria Intl
$282
Find similar
American Airlines
Dec 12
SJO3:38 pmSan José Juan Santamaria Intl
19h 15m
2 stops
ONT8:53 amOntario
Apr 22
ONT11:59 pmOntario
20h 56m
1 stop
SJO9:55 pmSan José Juan Santamaria Intl
$287
Find similar

Avianca flights from Costa Rica to Ontario

Our best Avianca deals on Costa Rica to Ontario flight tickets
Avianca
Feb 19
SJO3:05 pmSan José Juan Santamaria Intl
7h 50m
1 stop
ONT8:55 pmOntario
Feb 24
ONT10:30 pmOntario
10h 55m
1 stop
SJO11:25 amSan José Juan Santamaria Intl
$261
Find similar
Avianca
Apr 14
SJO3:05 pmSan José Juan Santamaria Intl
7h 50m
1 stop
ONT9:55 pmOntario
Apr 18
ONT11:25 pmOntario
10h 50m
1 stop
SJO11:15 amSan José Juan Santamaria Intl
$265
Find similar
Avianca
Apr 18
SJO5:05 amSan José Juan Santamaria Intl
17h 50m
1 stop
ONT9:55 pmOntario
Apr 21
ONT11:25 pmOntario
10h 50m
1 stop
SJO11:15 amSan José Juan Santamaria Intl
$275
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Costa Rica to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated noviembre 26, 2025.
Use the filters below to find and compare flights from Costa Rica to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

jue. 2/19

3:05 pm-8:55 pm

1 stop7h 50m

Ontario

mar. 2/24

10:30 pm-11:25 am

1 stop10h 55m

$261

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

mar. 4/14

3:05 pm-9:55 pm

1 stop7h 50m

Ontario

sáb. 4/18

11:25 pm-11:15 am

1 stop10h 50m

$265

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

mar. 1/27

9:40 am-10:53 pm

1 stop15h 13m

Ontario

lun. 2/2

1:53 pm-8:32 am

1 stop16h 39m

$267

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

sáb. 4/18

5:05 am-9:55 pm

1 stop17h 50m

Ontario

mar. 4/21

11:25 pm-11:15 am

1 stop10h 50m

$275

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

lun. 12/22

3:16 pm-8:48 am

2 stops19h 32m

Ontario

lun. 1/19

7:30 pm-12:38 pm

2 stops15h 08m

$281

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

vie. 12/12

6:20 am-1:55 pm

1 stop9h 35m

Ontario

mié. 4/22

11:59 pm-9:55 pm

1 stop20h 56m

$282

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

jue. 1/22

9:40 am-5:43 pm

1 stop10h 03m

Ontario

sáb. 1/31

1:53 pm-1:15 pm

2 stops45h 22m

$300

LiberiaOntario

LIR - ONT

LIRONT

Liberia

mié. 1/14

3:05 pm-12:16 pm

2 stops23h 11m

Ontario

lun. 1/19

10:30 pm-12:50 pm

1 stop12h 20m

$522

LiberiaOntario

LIR - ONT

LIRONT

Liberia

mié. 1/14

3:05 pm-12:16 pm

2 stops23h 11m

Ontario

sáb. 1/17

10:30 pm-12:50 pm

1 stop12h 20m

$543

LiberiaOntario

LIR - ONT

LIRONT

Liberia

lun. 5/18

1:45 pm-10:09 pm

1 stop33h 24m

Ontario

sáb. 5/23

11:25 pm-12:15 pm

1 stop11h 50m

$557

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest 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

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 May instead. Flights to Ontario in May, while not as cheap as those in October, 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 $441 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 $317 on momondo.

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

You could potentially save up to 10% 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 29m

Direct flights

None
The fastest flight from Costa Rica to Ontario takes 9h 29m
There are no direct flights from Costa Rica to Ontario. There are no popular flight routes from Costa Rica to Ontario.
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  • 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?

  • 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 AirlinesPriceFrom $267Free CancellationRating
7.4
9,046 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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