$498 Find Cheap Flights from Key West to Costa Rica - Compare and Save

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1 adult, Economy, 0 bags

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Price, demand and travel trends for Key West to Costa Rica flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What are the cheapest fares from Key West to Costa Rica right now?

The cheapest fares from Key West to Costa Rica on KAYAK in the last week were to San José Juan Santamaria Intl (SJO) from $498 round-trip, and to Liberia (LIR) from $727 round-trip.

Which airport in Costa Rica is the cheapest to fly to from Key West?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into Costa Rica are:

• San José Juan Santamaria Intl (SJO) from $747
• Liberia (LIR) from $861

What's the cheapest time of day to fly from Key West to Costa Rica?

Data from the past 12 months shows it's cheapest to fly to Costa Rica during the morning, but the difference compared with the afternoon, the most expensive time to fly, is minimal, just 1%.

Key details for Key West to Costa Rica flights

Low season

November

Cheapest flight

$498
Beat the crowds with an average 47% drop in travelers.
The most popular month to fly with an average 5% increase in travelers.
Round-trip flight from Key West to San José

Your Key West to Costa Rica flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Key West to Costa Rica?

    Yes. Fares from Key West to Costa Rica are low right now. As a rule of thumb, a round-trip under $573 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Key West to Costa Rica?

    Over the past 12 months, round-trip fares from Key West to Costa Rica have ranged from $573 to $835.

  • What are the main airports serving Costa Rica?

    Flights to Costa Rica use two main airports, San José Juan Santamaria Intl (SJO) and Liberia (LIR).

  • What airlines fly nonstop from Key West to Costa Rica?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from Key West to Costa Rica. However, American Airlines offers a one-stop option.

  • Which cabin classes are available on flights from Key West to Costa Rica?

    On flights from Key West to Costa Rica you can only book Economy Class.

  • What are some popular landmarks in Costa Rica?

    KAYAK travelers' favorite landmarks in Costa Rica include:

    • Parque Metropolitano La Sabana
    • Estadio Nacional de Costa Rica
    • Museo de Oro
    • Morazan Park

Your guide to booking Key West to Costa Rica flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your travel dates are flexible, book your trip for February when flights are typically cheapest and avoid August when prices are at their highest.
  • Flying on Thursday is usually the cheapest. Flights on Monday cost about 51% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, San José Juan Santamaria Intl (SJO) is the cheapest airport to fly into from Key West. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in San José, which is the most popular destination in Costa Rica. From there, it's easy to continue on to other popular destinations such as La Fortuna, Tamarindo and Manuel Antonio.

Reviews of the top airline flying from Key West to Costa Rica

 
Need help choosing which airline to fly with from Key West to Costa Rica? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.0
American AirlinesOverall score based on 12129 reviews
7.2Comfort
6.8Entertainment
7.9Crew
6.4Food
7.4Boarding
Airline reviews

Flight was delayed due to maintenance issue. Missed my connecting flight. Got rebooked in a middle seat when I had a first class ticket.

2.0 MediocreErin, Oct 2026
Read more American Airlines reviews

Flight was delayed due to maintenance issue. Missed my connecting flight. Got rebooked in a middle seat when I had a first class ticket.

My boarding pass said gate E5. I arrived at gate E5 by 12:45pm. At 2:10pm, I received a phone call stating I was supposed to be at gate D37. They would not wait for me to get there (by the way, the plane was still there when I got to gate D37, but everything was closed and no one was at the door). The next flight at 7:40pm was sold out; was told I'd be put on the 9:47pm flight. I was so stressed, I became chokey (apparently I have mild asthma). By the grace of God, a lot of begging, and the customer service rep taking pity on me, I was able to get on a 4:50pm flight to Philadelphia.

Comfy and timely flight thanks to Cathay to all crew and the captain for our smooth landing.. above all thank You Lord for our Safe flight ❤️🙌🙏🏽

I have executive platinum status with American Airlines. It seems impossible to be upgraded anymore and I’m never offered a cheese plate or thanked for my loyalty.

In premium economy I was expecting a bit cleaner area. Tables were not very clean. Only one of us received a blanket and pillow. The food was okay. Probably a smidgen better than coach. The crew were very nice but should have done more walk through to at least pick up trash.

We had a 1 hour delay due to mechanical issues, then another hour, then 2, and eventually it was an 8 hour delay. The airport staff was confused about gate changes, as they were not getting good communication. They were trying, but we changed gates 5 times in one hour!

Horrible. Flight was delayed for 4 hours first till 7pm. Then for one more hour. Then again and around 9pm we were finally boarded and waited for catering delivery for another hour. At 10pm we were not interested on food at all. Tired, sleepy we arrived after midnight. Insane.

My flights were all delayed , mostly due to technical issues with AA aircrafts. I had to rebook my trip 4 times . I lost my whole day and finally arrived in LAX around midnight. This was a very bad experience with American airlines , I will always try to avoid flying with them

I have never been assaulted they way I was today in Charlotte - shame on American

A much better flight than our previous. The flight attendant took care of us and regularly checked in to see if we needed anything. Brought us drinks prior to the departure and then a couple more times. Totally makes the difference in how you travel when the crew is checking on their passengers. Great job on this leg of our trip.

More options for your flight from Key West to Costa Rica

Complete your trip to Costa Rica with a hotel stay or car rental