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$129+ 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SJO
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
1 adult, Economy
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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 julio 31, 2025.

Round-trip from

$246
(CheapOair)

One-way from

$129
(Alaska Airlines)

Popular in

December

Cheapest in

May

Average price

$496
From Riverside to Costa Rica
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One-way flight from Riverside to Costa Rica
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Highest demand for flights based on searches. 17% potential increase in price ($102 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 julio 31, 2025.

This FlightHub deal was found by Cheapflights users on 7/31. 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.
dom. 8/177:58 pmLAX - SJO
2 stops14h 14mSpirit Airlines
sáb. 8/2312:18 pmSJO - LAX
2 stops20h 25mSpirit Airlines
Deal found 7/31$255
This Trip.com deal was found by Cheapflights users on 7/31. 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.
mié. 8/2010:49 pmLAX - SJO
1 stop23h 24mVolaris Costa Rica
dom. 8/315:30 amSJO - LAX
1 stop16h 41mVolaris Costa Rica
Deal found 7/31$260
This Trip.com deal was found by Cheapflights users on 7/31. 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.
mié. 11/510:50 pmLAX - SJO
1 stop19h 29mMultiple Airlines
lun. 11/104:17 pmSJO - LAX
1 stop20h 18mMultiple Airlines
Deal found 7/31$261
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/94:45 pmLAX - SJO
Nonstop5h 53mAlaska Airlines
vie. 11/211:30 amSJO - LAX
Nonstop6h 30mAlaska Airlines
Deal found 7/31$305
This Priceline deal was found by Cheapflights users on 7/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/191:00 amLAX - SJO
1 stop9h 15mAvianca
sáb. 9/276:10 amSJO - LAX
1 stop8h 20mAvianca
Deal found 7/30$307
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/3010:10 amLAX - SJO
1 stop9h 05mAmerican Airlines
mié. 9/36:00 amSJO - LAX
1 stop12h 56mAmerican Airlines
Deal found 7/30$320
This American Airlines deal was found by Cheapflights users on 7/31. 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.
jue. 9/46:52 pmLAX - LIR
2 stops17h 10mAmerican Airlines
lun. 9/82:02 pmLIR - LAX
1 stop19h 31mAmerican Airlines
Deal found 7/31$343
This United Airlines deal was found by Cheapflights users on 7/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/1212:56 amLAX - LIR
1 stop10h 14mUnited Airlines
sáb. 9/201:20 pmLIR - LAX
1 stop19h 14mUnited Airlines
Deal found 7/30$347
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/310:29 pmLAX - LIR
Nonstop5h 51mAlaska Airlines
sáb. 11/811:20 amLIR - LAX
Nonstop6h 00mAlaska Airlines
Deal found 7/31$364
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/2311:45 pmLAX - LIR
1 stop12h 30mSouthwest
dom. 8/312:10 pmLIR - LAX
1 stop10h 10mSouthwest
Deal found 7/29$380

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 julio 31, 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 AngelesSan José

LAX - SJO

LAXSJO

Los Angeles

dom. 8/17

7:58 pm-11:12 am

2 stops14h 14m

San José Juan Santamaria Intl

sáb. 8/23

12:18 pm-7:43 am

2 stops20h 25m

$255

Los AngelesSan José

LAX - SJO

LAXSJO

Los Angeles

mié. 8/20

10:49 pm-11:13 pm

1 stop23h 24m

San José Juan Santamaria Intl

dom. 8/31

5:30 am-9:11 pm

1 stop16h 41m

$260

Los AngelesSan José

LAX - SJO

LAXSJO

Los Angeles

vie. 8/15

5:07 pm-11:12 am

2 stops17h 05m

San José Juan Santamaria Intl

dom. 8/31

5:30 am-9:11 pm

1 stop16h 41m

$272

Los AngelesSan José

LAX - SJO

LAXSJO

Los Angeles

sáb. 9/20

2:50 pm-11:15 pm

1 stop7h 25m

San José Juan Santamaria Intl

sáb. 9/27

6:10 am-1:30 pm

1 stop8h 20m

$305

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

jue. 9/4

6:52 pm-1:02 pm

2 stops17h 10m

Liberia

lun. 9/8

2:02 pm-8:33 am

1 stop19h 31m

$343

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

vie. 9/12

12:56 am-12:10 pm

1 stop10h 14m

Liberia

sáb. 9/20

1:20 pm-7:34 am

1 stop19h 14m

$347

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

sáb. 8/30

11:33 pm-6:20 am

Nonstop5h 47m

Liberia

sáb. 9/6

11:20 am-4:12 pm

Nonstop5h 52m

$364

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

sáb. 8/23

11:45 pm-1:15 pm

1 stop12h 30m

Liberia

dom. 8/31

2:10 pm-11:20 pm

1 stop10h 10m

$380

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

dom. 10/26

10:55 pm-12:50 pm

2 stops36h 55m

Liberia

vie. 10/31

2:45 pm-9:30 pm

1 stop31h 45m

$491

Los AngelesLiberia

LAX - LIR

LAXLIR

Los Angeles

dom. 8/31

11:33 pm-6:20 am

Nonstop5h 47m

$129

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 23 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, 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 $555). 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 julio 31, 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.

Weekly flight availability from Riverside to Costa Rica

Explore weekly flight availability from Riverside to Costa Rica. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated julio 31, 2025.

The most flights from R1V to CR0 are scheduled on a Tuesday (4 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

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 julio 31, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Copa 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

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Copa Airlines
7.5
Good
1,493 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 42 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • 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 ($129), American Airlines ($132), and Volaris El Salvador ($149).

  • 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%), Air France (93%) and KLM (89%).

  • 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 $883, our data indicates the cheapest price to be $148. The most popular route (Los Angeles - San José Juan Santamaria Intl), is priced around $255.

  • 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 $555). 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 julio 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$87Average$343FlexibilityNo cancel feeOn-time65%
Volaris El SalvadorCheapest$112Average$222FlexibilityNo cancel feeOn-timeN/A
AviancaCheapest$175Average$461FlexibilityNo cancel feeOn-time71%
VolarisCheapest$184Average$421FlexibilityNo cancel feeOn-time79%
Volaris Costa RicaCheapest$195Average$368FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$235Average$582FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$310Average$523FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$326Average$633FlexibilityNo cancel feeOn-time69%
Copa AirlinesCheapest$327Average$508FlexibilityNo cancel feeOn-time70%
Alaska AirlinesCheapest$344Average$550FlexibilityNo cancel feeOn-time75%

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