HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Costa Rica

$137+ 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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SJO
oct. 16 — oct. 231
jue. 10/16
jue. 10/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Riverside to Costa Rica with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 septiembre 16, 2025.

Round-trip from

$230
(Expedia)

One-way from

$137
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$401
From Riverside to Costa Rica
Search Deals
One-way flight from Riverside to Costa Rica
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($106 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find 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 septiembre 16, 2025.

This Expedia deal was found by Cheapflights users on 9/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/1312:09 amLAX - SJO
2 stops10h 21mMultiple Airlines
lun. 10/275:30 amSJO - LAX
1 stop16h 46mMultiple Airlines
Deal found 9/14$230
This eDestinos deal was found by Cheapflights users on 9/14. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/275:07 pmLAX - SJO
2 stops17h 07mSpirit Airlines
sáb. 10/411:37 amSJO - LAX
2 stops13h 19mSpirit Airlines
Deal found 9/14$237
This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/2010:49 pmLAX - SJO
1 stop23h 24mMultiple Airlines
mié. 10/222:42 pmSJO - LAX
1 stop8h 17mMultiple Airlines
Deal found 9/15$241
This Expedia deal was found by Cheapflights users on 9/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/1312:09 amLAX - SJO
2 stops10h 21mMultiple Airlines
jue. 10/165:30 amSJO - LAX
1 stop16h 46mMultiple Airlines
Deal found 9/14$243
This Orbitz deal was found by Cheapflights users on 9/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/510:49 pmLAX - SJO
1 stop23h 24mVolaris Costa Rica
jue. 10/95:30 amSJO - LAX
1 stop16h 46mVolaris Costa Rica
Deal found 9/15$244
This Orbitz deal was found by Cheapflights users on 9/14. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/2211:39 pmLAX - SJO
1 stop19h 40mMultiple Airlines
sáb. 9/2712:19 pmSJO - LAX
2 stops21h 29mMultiple Airlines
Deal found 9/14$246
This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/2610:49 pmLAX - SJO
1 stop23h 24mVolaris Costa Rica
mar. 11/42:39 pmSJO - LAX
1 stop7h 55mVolaris Costa Rica
Deal found 9/15$247
This CheapOair deal was found by Cheapflights users on 9/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/307:50 pmLAX - SJO
2 stops14h 24mSpirit Airlines
mar. 10/712:35 pmSJO - LAX
2 stops20h 42mSpirit Airlines
Deal found 9/14$248
This Orbitz deal was found by Cheapflights users on 9/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/2710:49 pmLAX - SJO
1 stop7h 39mMultiple Airlines
sáb. 10/412:19 pmSJO - LAX
2 stops12h 37mMultiple Airlines
Deal found 9/15$251
This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/2911:39 pmLAX - SJO
1 stop19h 40mMultiple Airlines
jue. 10/25:30 amSJO - LAX
1 stop16h 46mMultiple Airlines
Deal found 9/15$252
This Priceline deal was found by Cheapflights users on 9/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/1312:09 amLAX - SJO
2 stops10h 21mSpirit Airlines
lun. 10/2712:35 pmSJO - LAX
2 stops20h 42mSpirit Airlines
Deal found 9/14$255
This CheapOair deal was found by Cheapflights users on 9/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/612:09 pmLAX - SJO
1 stop16h 35mVolaris El Salvador
lun. 11/104:17 pmSJO - LAX
1 stop20h 18mVolaris El Salvador
Deal found 9/16$256

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 septiembre 16, 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

vie. 11/28

10:42 pm-6:20 am

Nonstop5h 38m

Liberia

mié. 12/3

7:17 pm-11:26 pm

Nonstop6h 09m

$324

Los AngelesSan José

LAX - SJO

LAXSJO

Los Angeles

lun. 11/10

4:45 pm-12:38 am

Nonstop5h 53m

San José Juan Santamaria Intl

lun. 11/24

1:30 am-6:00 am

Nonstop6h 30m

$325

Los AngelesSan José

LAX - SJO

LAXSJO

Los Angeles

lun. 11/10

4:45 pm-12:38 am

Nonstop5h 53m

San José Juan Santamaria Intl

lun. 11/17

1:55 am-6:15 am

Nonstop6h 20m

$325

Los AngelesSan José

LAX - SJO

LAXSJO

Los Angeles

mié. 10/29

4:58 pm-11:51 pm

Nonstop5h 53m

San José Juan Santamaria Intl

lun. 11/3

1:55 am-6:15 am

Nonstop6h 20m

$325

Los AngelesSan José

LAX - SJO

LAXSJO

Los Angeles

mar. 11/11

11:05 am-8:19 am

1 stop19h 14m

San José Juan Santamaria Intl

mié. 11/19

5:50 pm-12:02 pm

1 stop20h 12m

$326

Los AngelesSan José

LAX - SJO

LAXSJO

Los Angeles

lun. 11/10

4:45 pm-12:38 am

Nonstop5h 53m

San José Juan Santamaria Intl

dom. 11/23

1:30 am-6:00 am

Nonstop6h 30m

$328

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

mar. 10/28

12:55 am-5:37 pm

1 stop15h 42m

Liberia

mié. 11/5

2:20 pm-11:21 pm

1 stop11h 01m

$330

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

vie. 11/7

11:20 pm-12:55 pm

1 stop11h 35m

Liberia

mar. 11/11

8:35 am-4:07 pm

1 stop9h 32m

$339

Los AngelesSan José

LAX - SJO

LAXSJO

Los Angeles

vie. 10/31

1:52 am-1:53 pm

1 stop11h 01m

San José Juan Santamaria Intl

jue. 11/6

11:00 am-10:44 pm

1 stop13h 44m

$340

Los AngelesSan José

LAX - SJO

LAXSJO

Los Angeles

jue. 11/13

11:05 am-8:19 am

1 stop19h 14m

San José Juan Santamaria Intl

mié. 11/26

4:08 am-12:02 pm

1 stop9h 54m

$341

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 39 results
1
2
3
4

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, September is the cheapest month in which you can book a flight from Riverside to Costa Rica (average of $398). Flying from Riverside to Costa Rica in March is currently the most expensive (average of $554). 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 septiembre 16, 2025.

When flying from Riverside to Costa Rica, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 Thursday at noon when fares are most often at their lowest. Saturday 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 septiembre 16, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and United Airlines 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
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,957 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,924 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Avianca
6.7
Okay
2,435 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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, Copa Airlines, and United Airlines can get you from Riverside to Costa Rica in just under 5h 38m. Your travel time can differ by up to 13h 36m. Airlines will cover a distance of 2626 mi. This flight may include one or multiple stops.

  • 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 (92%), Alaska Airlines (92%) and KLM (80%).

  • 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 $315, our data indicates the cheapest price to be $140. The most popular route (Los Angeles - San José Juan Santamaria Intl), is priced around $236.

  • 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, September is the cheapest month in which you can book a flight from Riverside to Costa Rica (average of $398). Flying from Riverside to Costa Rica in March is currently the most expensive (average of $554). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Riverside to Costa Rica

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Guatemala City flights
Los Angeles to San Salvador flights
Los Angeles to San José flights
Los Angeles to Panama City flights
San Francisco to San José flights
Los Angeles to Liberia flights
Ontario to San Salvador flights
San Francisco to Panama City flights
Los Angeles to Philip S.W.Goldson flights
San Francisco to San Salvador flights
Ontario to Guatemala City flights
San Francisco to Guatemala City flights
Ontario to San José flights
San Francisco to Liberia flights
Los Angeles to Managua flights
San Francisco to Managua flights
San Francisco to Philip S.W.Goldson flights
Burbank to Guatemala City flights
Las Vegas to San Salvador flights
Oakland to San José flights
Burbank to San Salvador flights
San Diego to San José flights
San Jose to San José flights
Burbank to San José flights
Las Vegas to Panama City flights
Ontario to Liberia flights
Reno to San José flights
Ontario to Philip S.W.Goldson flights
San Diego to Panama City flights
Santa Ana to San José flights
Los Angeles to San Pedro Sula flights
Sacramento to San José flights
San Jose to Guatemala City flights
Oakland to San Salvador flights
Ontario to Managua flights
Ontario to Panama City flights
Las Vegas to Guatemala City flights
Las Vegas to San José flights
San Francisco to San Pedro Sula flights
San Jose to Liberia flights
San Diego to Liberia flights
San Jose to Philip S.W.Goldson flights
Sacramento to Liberia flights
San Francisco to Coxen Hole flights
Santa Ana to San Salvador flights
San Jose to San Salvador flights
Oakland to Guatemala City flights
San Diego to San Salvador flights
Ontario to San Pedro Sula flights
Sacramento to Philip S.W.Goldson flights

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 septiembre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$87Average$317FlexibilityNo cancel feeOn-time65%
Volaris El SalvadorCheapest$116Average$231FlexibilityNo cancel feeOn-timeN/A
AviancaCheapest$178Average$467FlexibilityNo cancel feeOn-time71%
Volaris Costa RicaCheapest$195Average$379FlexibilityNo cancel feeOn-timeN/A
VolarisCheapest$211Average$425FlexibilityNo cancel feeOn-time79%
DeltaCheapest$231Average$584FlexibilityNo cancel feeOn-timeN/A
Copa AirlinesCheapest$310Average$508FlexibilityNo cancel feeOn-time70%
Alaska AirlinesCheapest$334Average$535FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$334Average$645FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$383Average$685FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.