$136+ 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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SJO
Feb 28 — Mar 71
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
Cheapest flights from Riverside to Costa RicaExplore 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 January 29, 2026.
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 January 29, 2026.
This CheapOair deal was found by Cheapflights users on 1/28. 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 2/2112:09 pm
LAX
- SJO
1 stop16h 41m
Multiple Airlines
Thu 2/261:31 pm
SJO
- LAX
1 stop12h 19m
Multiple Airlines
Deal found 1/28![Multiple Airlines logo]()
$294
This Trip.com deal was found by Cheapflights users on 1/27. 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.
Thu 2/511:51 pm
LAX
- SJO
1 stop11h 59m
Multiple Airlines
Thu 2/125:30 am
SJO
- LAX
1 stop17h 04m
Multiple Airlines
Deal found 1/27![Multiple Airlines logo]()
$295
This Expedia deal was found by Cheapflights users on 1/27. 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.
Sun 3/111:59 pm
LAX
- SJO
1 stop10h 23m
Multiple Airlines
Wed 3/41:27 am
SJO
- LAX
Nonstop6h 41m
Multiple Airlines
Deal found 1/27![Multiple Airlines logo]()
$296
This CheapOair deal was found by Cheapflights users on 1/28. 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 2/284:07 pm
LAX
- SJO
2 stops18h 15m
Multiple Airlines
Mon 3/164:17 pm
SJO
- LAX
1 stop20h 09m
Multiple Airlines
Deal found 1/28![Multiple Airlines logo]()
$297
This CheapOair deal was found by Cheapflights users on 1/27. 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.
Mon 3/24:07 pm
LAX
- SJO
2 stops18h 15m
Multiple Airlines
Fri 3/135:30 am
SJO
- LAX
1 stop16h 57m
Multiple Airlines
Deal found 1/27![Multiple Airlines logo]()
$298
This Mytrip deal was found by Cheapflights users on 1/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2112:09 pm
LAX
- SJO
1 stop16h 41m
Multiple Airlines
Tue 3/31:31 pm
SJO
- LAX
2 stops20h 44m
Multiple Airlines
Deal found 1/28![Multiple Airlines logo]()
$299
This Orbitz deal was found by Cheapflights users on 1/29. 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.
Thu 2/194:07 pm
LAX
- SJO
2 stops18h 15m
Spirit Airlines
Mon 3/21:31 pm
SJO
- LAX
2 stops20h 44m
Spirit Airlines
Deal found 1/29![Spirit Airlines logo]()
$300
This Travelocity deal was found by Cheapflights users on 1/28. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/264:07 pm
LAX
- SJO
2 stops18h 15m
Multiple Airlines
Mon 3/164:17 pm
SJO
- LAX
1 stop20h 09m
Multiple Airlines
Deal found 1/28![Multiple Airlines logo]()
$301
This Gotogate deal was found by Cheapflights users on 1/27. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/910:04 pm
LAX
- SJO
1 stop23h 09m
Multiple Airlines
Wed 2/181:31 pm
SJO
- LAX
2 stops20h 44m
Multiple Airlines
Deal found 1/27![Multiple Airlines logo]()
$302
This FlightHub deal was found by Cheapflights users on 1/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2811:59 pm
LAX
- SJO
1 stop10h 23m
Spirit Airlines
Tue 3/31:31 pm
SJO
- LAX
2 stops20h 44m
Spirit Airlines
Deal found 1/28![Spirit Airlines logo]()
$303
This FlightHub deal was found by Cheapflights users on 1/27. 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.
Sun 3/110:04 pm
LAX
- SJO
Nonstop7h 13m
Volaris Costa Rica
Fri 3/62:39 pm
SJO
- LAX
Nonstop7h 55m
Volaris Costa Rica
Deal found 1/27![Volaris Costa Rica logo]()
$304
This FlightHub deal was found by Cheapflights users on 1/27. 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.
Sun 3/110:04 pm
LAX
- SJO
Nonstop7h 13m
Volaris Costa Rica
Mon 3/92:39 pm
SJO
- LAX
Nonstop7h 48m
Volaris Costa Rica
Deal found 1/27![Volaris Costa Rica logo]()
$305
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 January 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $294 (CheapOair) |
One-way from | $136 (Expedia) |
Popular in | December |
Cheapest in | October |
Average price | $465 |
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 January 29, 2026.
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
Sun 3/8
5:00 am-3:08 pm
1 stop9h 08m
Liberia
Fri 3/13
1:01 pm-11:59 pm
1 stop11h 58m
$358
Los AngelesSan José
LAX - SJO
LAXSJO
Los Angeles
Thu 4/23
5:00 pm-11:45 pm
Nonstop5h 45m
San José Juan Santamaria Intl
Mon 5/4
12:55 am-6:33 am
Nonstop6h 38m
$366
Los AngelesSan José
LAX - SJO
LAXSJO
Los Angeles
Sun 4/19
6:45 pm-10:11 am
1 stop14h 26m
San José Juan Santamaria Intl
Sat 4/25
6:00 am-11:21 am
Nonstop6h 21m
$370
Los AngelesSan José
LAX - SJO
LAXSJO
Los Angeles
Sat 4/25
12:55 am-10:11 am
1 stop8h 16m
San José Juan Santamaria Intl
Sun 5/10
6:00 am-11:21 am
Nonstop6h 21m
$382
Los AngelesSan José
LAX - SJO
LAXSJO
Los Angeles
Sat 3/7
10:44 pm-6:25 am
Nonstop5h 41m
San José Juan Santamaria Intl
Sat 3/14
5:40 am-11:08 am
Nonstop6h 28m
$385
Los AngelesLiberia
LAX - LIR
LAXLIR
Los Angeles
Mon 2/23
7:10 pm-2:15 pm
2 stops17h 05m
Liberia
Sat 2/28
4:00 pm-11:25 pm
1 stop9h 25m
$394
Los AngelesLiberia
LAX - LIR
LAXLIR
Los Angeles
Fri 2/27
10:20 am-5:58 pm
Nonstop5h 38m
Liberia
Tue 3/17
11:20 am-4:43 pm
Nonstop6h 23m
$399
Los AngelesSan José
LAX - SJO
LAXSJO
Los Angeles
Sat 4/25
5:00 pm-11:45 pm
Nonstop5h 45m
San José Juan Santamaria Intl
Mon 5/4
12:55 am-6:33 am
Nonstop6h 38m
$401
Los AngelesLiberia
LAX - LIR
LAXLIR
Los Angeles
Sat 4/25
6:13 am-3:59 pm
1 stop8h 46m
Liberia
Tue 4/28
11:20 am-4:37 pm
Nonstop6h 17m
$408
Los AngelesLiberia
LAX - LIR
LAXLIR
Los Angeles
Sun 3/8
11:59 pm-6:36 am
Nonstop5h 37m
Liberia
Sat 3/14
4:47 pm-11:57 pm
1 stop32h 10m
$411
Showing 1-10 of 45 results
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 $294). 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 January 29, 2026.
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 20% on your trip compared to booking a flight in the afternoon.
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 January 24, 2026.
Travelers seeking maximum savings on their Riverside to Costa Rica flight should consider departing on Friday at noon when fares are most often at their lowest. Wednesday at noon 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 January 29, 2026.
The most flights from R1V to CR0 are scheduled on a Tuesday (4 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (2 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 January 29, 2026.
Read reviews from past customers who have flown Alaska Airlines, Volaris Costa Rica, 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.
Boarding
8.1
Food
7.1
Overall
8.0
Crew
8.5
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Boarding
8.1
Food
7.1
Overall
8.0
Crew
8.5
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Boarding
8.1
Food
7.1
Overall
8.0
Crew
8.5
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Boarding
8.1
Food
7.1
Overall
8.0
Crew
8.5
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Boarding
8.1
Food
7.1
Overall
8.0
Crew
8.5
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Boarding
8.1
Food
7.1
Overall
8.0
Crew
8.5
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
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.
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.
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 January 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$81 | Average$192 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$114 | Average$212 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$148 | Average$462 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$165 | Average$351 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$180 | Average$463 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$193 | Average$408 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$202 | Average$502 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$220 | Average$503 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$315 | Average$543 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$333 | Average$665 | FlexibilityNo cancel fee | On-time71% |