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$151+ Cheap flights from Riverside, CA to Costa Rica

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SJO
Jan 16 — Jan 231
Fri 1/16
Fri 1/23
1 adult, Economy
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Cheap flight deals from Riverside to Costa Rica

Cheapest flights from Riverside to Costa Rica
Explore the most affordable flight options available from Riverside to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 17, 2025.

This American Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:50 pmLAX - SJO
1 stop19h 42mAmerican Airlines
Sat 1/316:00 amSJO - LAX
1 stop20h 55mAmerican Airlines
Deal found 12/17$356
This American Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/167:00 amLAX - SJO
1 stop11h 49mAmerican Airlines
Thu 12/1812:34 amSJO - LAX
1 stop11h 36mAmerican Airlines
Deal found 12/15$368
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:20 pmLAX - SJO
Nonstop5h 45mDelta
Sat 1/318:25 amSJO - LAX
Nonstop6h 28mDelta
Deal found 12/16$375
This American Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1510:59 pmLAX - SJO
1 stop19h 50mAmerican Airlines
Mon 12/226:20 amSJO - LAX
1 stop18h 44mAmerican Airlines
Deal found 12/15$379
This FlightHub deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:43 pmLAX - SJO
1 stop10h 42mSpirit Airlines
Sat 1/311:30 pmSJO - LAX
2 stops20h 52mSpirit Airlines
Deal found 12/15$380
This American Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3011:57 pmLAX - SJO
1 stop18h 17mAmerican Airlines
Sat 1/314:02 pmSJO - LAX
1 stop19h 37mAmerican Airlines
Deal found 12/15$396
This United Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:50 amLAX - SJO
1 stop10h 26mUnited Airlines
Sun 12/216:40 amSJO - LAX
Nonstop6h 28mUnited Airlines
Deal found 12/17$397
This United Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1811:02 amLAX - SJO
1 stop8h 58mUnited Airlines
Mon 12/222:20 pmSJO - LAX
1 stop11h 10mUnited Airlines
Deal found 12/16$407
This United Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:44 pmLAX - SJO
Nonstop5h 41mUnited Airlines
Sat 1/316:40 amSJO - LAX
Nonstop6h 28mUnited Airlines
Deal found 12/17$411
This American Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/291:15 amLAX - LIR
1 stop9h 11mAmerican Airlines
Tue 1/133:14 pmLIR - LAX
1 stop11h 41mAmerican Airlines
Deal found 12/17$430
This American Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:59 pmLAX - LIR
1 stop16h 27mAmerican Airlines
Thu 1/83:23 pmLIR - LAX
1 stop26h 38mAmerican Airlines
Deal found 12/17$437
This American Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2912:40 amLAX - LIR
1 stop11h 33mAmerican Airlines
Sat 1/101:30 pmLIR - LAX
1 stop21h 35mAmerican Airlines
Deal found 12/15$503

Find flight deals from Riverside to Costa Rica

Keep the following information in mind while searching for Riverside to Costa Rica flight deals. Data was last updated December 17, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$320
(SmartFares)

One-way from

$151
(CheapOair)

Popular in

December

Cheapest in

October

Average price

$787
Provider with most accurate pricing for Los Angeles-San José Juan Santamaria Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-San José Juan Santamaria Intl flights.
Search Deals
From Riverside to Costa Rica
Search Deals
One-way flight from Riverside to Costa Rica
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($114 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Riverside to Costa Rica 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, Cheapflights users made 2,558,603 searches. Data last updated December 17, 2025.
Use the filters below to find and compare flights from Riverside to Costa Rica that are best for you.

Fly from

Riverside

Fly to

Costa Rica

Route

Depart

Return

Price

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

Mon 2/23

10:20 am-5:58 pm

Nonstop5h 38m

Liberia

Mon 3/2

7:08 pm-11:28 pm

Nonstop6h 20m

$334

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

Fri 1/30

10:25 am-6:01 pm

Nonstop5h 36m

Liberia

Fri 2/6

11:20 am-3:28 pm

Nonstop6h 08m

$334

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

Sun 2/1

11:05 pm-12:55 pm

1 stop11h 50m

Liberia

Sat 2/7

4:53 pm-9:05 pm

Nonstop6h 12m

$339

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

Fri 2/6

7:55 pm-5:01 pm

1 stop19h 06m

Liberia

Wed 2/11

11:20 am-3:28 pm

Nonstop6h 08m

$339

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

Sat 1/10

8:15 am-3:51 pm

Nonstop5h 36m

Liberia

Fri 1/16

8:35 am-11:33 pm

1 stop16h 58m

$344

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

Sun 1/25

10:25 am-6:01 pm

Nonstop5h 36m

Liberia

Thu 1/29

11:20 am-3:28 pm

Nonstop6h 08m

$344

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

Fri 2/6

7:35 am-6:37 pm

1 stop9h 02m

Liberia

Tue 2/10

8:35 am-4:56 pm

1 stop10h 21m

$349

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

Thu 2/5

12:55 am-6:37 pm

1 stop15h 42m

Liberia

Wed 2/11

8:35 am-4:56 pm

1 stop10h 21m

$349

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

Sun 1/25

12:40 am-6:37 pm

1 stop15h 57m

Liberia

Thu 1/29

2:20 pm-9:44 pm

1 stop9h 24m

$359

Los AngelesSan José

LAX - SJO

LAXSJO

Los Angeles

Mon 2/16

1:50 pm-11:15 pm

1 stop7h 25m

San José Juan Santamaria Intl

Mon 2/23

5:00 am-11:35 am

1 stop8h 35m

$379

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 43 results
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Best time to book a flight from Riverside to Costa Rica

Have a flexible travel schedule? Discover the best time to fly to Costa Rica from Riverside with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Riverside to Costa Rica

What is the cheapest month to book a flight from Riverside to Costa Rica?

Currently, October is the cheapest month in which you can book a flight from Riverside to Costa Rica (average of $152). Flying from Riverside to Costa Rica in December is currently the most expensive (average of $299). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from R1V to CR?

Find hourly flight availability from Riverside to Costa Rica. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 17, 2025.

A simple way to save on the total cost of your ticket is to fly from Riverside to Costa Rica at noon. If you’re flexible enough to do this you can expect to save up to 22% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from Riverside to Costa Rica?

Use this chart to determine the cheapest time to fly round-trip from Riverside to Costa Rica. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Riverside to Costa Rica flight should consider departing on Sunday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Costa Rica

Get insights into the airlines that provide service to Costa Rica. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Costa Rica. Reviews last updated December 17, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and Volaris Costa Rica from Riverside to Costa Rica. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,477 reviews

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,477 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,005 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Volaris Costa Rica
7.8
Good
80 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,091 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Avianca
6.6
Okay
2,490 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

Related info for your journey

Find useful and relevant information for your journey from Riverside to Costa Rica. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Riverside to Costa Rica flight route?

    The Riverside to Costa Rica flight path was viewed by 34 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Riverside to Costa Rica?

    Alaska Airlines, United Airlines, and Avianca can get you from Riverside to Costa Rica in just under 5h 38m. Your travel time can differ by up to 6h 12m. Airlines will cover a distance of 2626 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Riverside to Costa Rica one-way?

    The cheapest airlines for a one-way flight from Riverside to Costa Rica are Volaris El Salvador ($104), Volaris Costa Rica ($125), and Spirit Airlines ($129).

  • What are the most reliable airlines from Riverside to Costa Rica?

    The top 3 most reliable airlines when flying from Riverside to Costa Rica are American Airlines (89%), Alaska Airlines (89%) and United Airlines (86%).

  • What are the cheapest flights from Riverside to Costa Rica?

    Looking for the cheapest flight from Riverside to Costa Rica? While on average our users pay $834, our data indicates the cheapest price to be $151. The most popular route (Los Angeles - San José Juan Santamaria Intl), is priced around $206.

  • Can I find deals for flights from Riverside to Costa Rica that include hotel bookings?

    Yes. In addition to deals on Riverside to Costa Rica flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Riverside to Costa Rica?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Riverside to Costa Rica.

  • Can I find deals for business class flights from Riverside to Costa Rica?

    Yes. Cheapflights offers flight deals from Riverside to Costa Rica by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Riverside to Costa Rica?

    Currently, October is the cheapest month in which you can book a flight from Riverside to Costa Rica (average of $152). Flying from Riverside to Costa Rica in December is currently the most expensive (average of $299). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Riverside to Costa Rica

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Riverside to Costa Rica

Discover the top 10 airlines that operate flights from Riverside to Costa Rica. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$81Average$269FlexibilityNo cancel feeOn-time65%
Volaris El SalvadorCheapest$117Average$265FlexibilityNo cancel feeOn-timeN/A
AviancaCheapest$165Average$473FlexibilityNo cancel feeOn-time71%
Volaris Costa RicaCheapest$195Average$379FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$205Average$555FlexibilityNo cancel feeOn-timeN/A
Copa AirlinesCheapest$320Average$505FlexibilityNo cancel feeOn-time70%
Alaska AirlinesCheapest$324Average$554FlexibilityNo cancel feeOn-time75%
JetBlueCheapest$337Average$483FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$346Average$609FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$366Average$677FlexibilityNo cancel feeOn-time71%

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