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$138+ 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SJO
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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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 October 30, 2025.

This eDestinos deal was found by Cheapflights users on 10/28. 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.
Thu 11/2712:09 pmLAX - SJO
1 stop16h 41mMultiple Airlines
Thu 12/42:39 pmSJO - LAX
Nonstop7h 55mMultiple Airlines
Deal found 10/28$251
This Mytrip deal was found by Cheapflights users on 10/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/510:35 amLAX - SJO
2 stops23h 50mMultiple Airlines
Wed 12/105:30 amSJO - LAX
1 stop17h 04mMultiple Airlines
Deal found 10/29$259
This CheapOair deal was found by Cheapflights users on 10/30. 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.
Thu 12/410:35 amLAX - SJO
2 stops23h 50mSpirit Airlines
Sat 12/61:31 pmSJO - LAX
2 stops21h 59mSpirit Airlines
Deal found 10/30$273
This Expedia deal was found by Cheapflights users on 10/29. 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.
Sat 11/154:56 pmLAX - SJO
2 stops17h 29mMultiple Airlines
Fri 11/211:30 amSJO - LAX
Nonstop6h 30mMultiple Airlines
Deal found 10/29$276
This Expedia deal was found by Cheapflights users on 10/29. 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.
Sat 11/154:56 pmLAX - SJO
2 stops17h 29mMultiple Airlines
Thu 11/201:45 amSJO - LAX
Nonstop6h 30mMultiple Airlines
Deal found 10/29$278
This CheapOair deal was found by Cheapflights users on 10/28. 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.
Sat 11/84:56 pmLAX - SJO
2 stops17h 29mSpirit Airlines
Thu 11/131:30 pmSJO - LAX
2 stops20h 44mSpirit Airlines
Deal found 10/28$279
This Mytrip deal was found by Cheapflights users on 10/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/144:56 pmLAX - SJO
2 stops17h 29mSpirit Airlines
Sun 11/161:30 pmSJO - LAX
2 stops20h 44mSpirit Airlines
Deal found 10/30$281
This Trip.com deal was found by Cheapflights users on 10/29. 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.
Mon 12/111:15 pmLAX - SJO
1 stop14h 05mMultiple Airlines
Fri 12/55:30 amSJO - LAX
1 stop17h 04mMultiple Airlines
Deal found 10/29$282
This Orbitz deal was found by Cheapflights users on 10/30. 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.
Fri 11/144:56 pmLAX - SJO
2 stops17h 29mMultiple Airlines
Thu 11/201:45 amSJO - LAX
Nonstop6h 30mMultiple Airlines
Deal found 10/30$288
This KAYAK deal was found by Cheapflights users on 10/29. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/510:35 amLAX - SJO
2 stops23h 50mSpirit Airlines
Fri 12/121:31 pmSJO - LAX
2 stops21h 59mSpirit Airlines
Deal found 10/29$290
This Orbitz deal was found by Cheapflights users on 10/29. 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.
Fri 11/144:56 pmLAX - SJO
2 stops17h 29mMultiple Airlines
Sun 11/231:30 amSJO - LAX
Nonstop6h 30mMultiple Airlines
Deal found 10/29$292
This SmartFares deal was found by Cheapflights users on 10/28. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:00 amLAX - LIR
1 stop9h 13mAlaska Airlines
Sat 12/137:17 pmLIR - LAX
Nonstop6h 09mAlaska Airlines
Deal found 10/28$327

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 October 30, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$240
(Mytrip)

One-way from

$138
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$375
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 ($113 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 October 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 October 30, 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

Sat 12/13

6:00 am-5:13 pm

1 stop9h 13m

Liberia

Thu 12/18

7:40 am-11:59 am

Nonstop6h 19m

$329

Los AngelesSan José

LAX - SJO

LAXSJO

Los Angeles

Tue 12/9

4:02 pm-11:48 pm

Nonstop5h 46m

San José Juan Santamaria Intl

Sat 12/20

1:30 am-6:10 am

Nonstop6h 40m

$340

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

Sat 12/13

10:37 pm-6:20 am

Nonstop5h 43m

Liberia

Mon 12/22

7:40 am-11:59 am

Nonstop6h 19m

$344

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

Tue 12/2

10:25 am-6:07 pm

Nonstop5h 42m

Liberia

Sun 12/7

7:17 pm-11:26 pm

Nonstop6h 09m

$344

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

Thu 12/11

10:25 am-6:07 pm

Nonstop5h 42m

Liberia

Sun 12/21

7:07 pm-11:30 pm

Nonstop6h 23m

$344

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

Fri 12/5

10:37 pm-6:20 am

Nonstop5h 43m

Liberia

Sat 12/13

7:17 pm-11:26 pm

Nonstop6h 09m

$344

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

Thu 12/11

10:25 am-6:07 pm

Nonstop5h 42m

Liberia

Mon 12/22

7:40 am-11:59 am

Nonstop6h 19m

$344

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

Mon 12/15

7:40 am-6:37 pm

1 stop8h 57m

Liberia

Sat 12/20

4:53 pm-9:05 pm

Nonstop6h 12m

$349

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

Sat 12/13

6:00 am-5:13 pm

1 stop9h 13m

Liberia

Sat 12/20

7:07 pm-11:30 pm

Nonstop6h 23m

$349

Los AngelesSan José

LAX - SJO

LAXSJO

Los Angeles

Fri 11/14

10:44 pm-6:25 am

Nonstop5h 41m

San José Juan Santamaria Intl

Mon 11/24

2:20 pm-11:59 pm

1 stop11h 39m

$353

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 44 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 $153). Flying from Riverside to Costa Rica in December is currently the most expensive (average of $305). 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 October 30, 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 21% 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 October 30, 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
11,215 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

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
11,215 reviews
Alaska Airlines
8.0
Very good
11,215 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

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
7.9
Good
7,996 reviews
Alaska Airlines
8.0
Very good
11,215 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

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.
Volaris Costa Rica
7.8
Good
79 reviews
Alaska Airlines
8.0
Very good
11,215 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

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
8,998 reviews
Alaska Airlines
8.0
Very good
11,215 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

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
6.6
Okay
2,467 reviews
Alaska Airlines
8.0
Very good
11,215 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

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 39 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 and United Airlines can get you from Riverside to Costa Rica in just under 5h 41m. Your travel time can differ by up to 3h 32m. Airlines will cover a distance of 2721 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 Alaska Airlines ($139), American Airlines ($144), and United Airlines ($151).

  • 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 United Airlines (100%), American Airlines (85%) and Alaska Airlines (85%).

  • 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 $769, our data indicates the cheapest price to be $149. The most popular route (Los Angeles - San José Juan Santamaria Intl), is priced around $228.

  • 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 $153). Flying from Riverside to Costa Rica in December is currently the most expensive (average of $305). 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$87Average$277FlexibilityNo cancel feeOn-time65%
Volaris El SalvadorCheapest$117Average$256FlexibilityNo cancel feeOn-timeN/A
AviancaCheapest$173Average$460FlexibilityNo cancel feeOn-time71%
VolarisCheapest$179Average$399FlexibilityNo cancel feeOn-time79%
Volaris Costa RicaCheapest$193Average$382FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$200Average$489FlexibilityNo cancel feeOn-time62%
DeltaCheapest$223Average$573FlexibilityNo cancel feeOn-timeN/A
Copa AirlinesCheapest$267Average$495FlexibilityNo cancel feeOn-time70%
Alaska AirlinesCheapest$332Average$546FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$333Average$669FlexibilityNo cancel feeOn-time71%

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