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$645+ Cheap flights from Eureka, CA to Costa Rica

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
RDD — SJO
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Eureka to Costa Rica

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

Round-trip from

$645
(United Airlines)
From Eureka to Costa Rica
Search Deals

Find flight deals from Eureka to Costa Rica

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

This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/106:45 pmACV - LIR
2 stops19h 23mUnited Airlines
Thu 11/132:20 pmLIR - ACV
2 stops22h 35mUnited Airlines
Deal found 9/14$645

Cheapflights Fare Finder

 
Customize your flight search to find flights from Eureka 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 September 17, 2025.
Use the filters below to find and compare flights from Eureka to Costa Rica that are best for you.

Fly from

Eureka

Fly to

Costa Rica

Route

Depart

Return

Price

ArcataLiberia

ACV - LIR

ACVLIR

Arcata Eureka

Mon 11/10

6:45 pm-4:08 pm

2 stops19h 23m

Liberia

Thu 11/13

2:20 pm-10:55 am

2 stops22h 35m

$645

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Best time to book a flight from Eureka to Costa Rica

Have a flexible travel schedule? Discover the best time to fly to Costa Rica from Eureka 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 Eureka to Costa Rica

What is the cheapest time of day to fly from EU9 to CR?

Find hourly flight availability from Eureka 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 September 17, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Eureka to Costa Rica as you normally would.

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 September 17, 2025.
Read through reviews of airlines operating flights from Eureka to Costa Rica, such as United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,926 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,926 reviews
United Airlines
7.4
Good
8,926 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Eureka 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 long is the flight from Eureka to Costa Rica?

    For as low as $645, United Airlines can have you in Costa Rica from Eureka in 19h 23m. Eureka and Costa Rica are separated by a distance of 3142 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Eureka 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 Eureka to Costa Rica?

    Currently, September is the cheapest month in which you can book a flight from Eureka to Costa Rica (average of $398). Flying from Eureka 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

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Alternative routes for Eureka to Costa Rica

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Top airline flying from Eureka to Costa Rica

Discover the top airline that operate flights from Eureka 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$561Average$817FlexibilityNo cancel feeOn-time69%

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