Find cheap flights from Key West to Costa Rica - Compare and Save

1 adult
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.

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

All flights from Key West to Costa Rica arrive at Liberia (LIR). On average, round-trip fares are around $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%.

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Key details for Key West to Costa Rica flights

Low season

November
Beat the crowds with an average 83% drop in travelers.
The most popular month to fly with an average 33% increase in travelers.

Your Key West to Costa Rica flight questions, answered

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

  • 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 $846.

  • 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.
  • 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 12232 reviews
7.2Comfort
6.8Entertainment
7.9Crew
7.4Boarding
6.4Food
Airline reviews

Seats were very tight for a 17 hour flight. Baby cried for 15 out of 17 hours.

4.0 OkayBarbara, Oct 2026
Read more American Airlines reviews

Seats were very tight for a 17 hour flight. Baby cried for 15 out of 17 hours.

Good flight, excellent personnel; poor comfort, small seats, big cost.

This trip on American was the WORST I have ever experienced. The plan was LATE taking off from Tucson due to mechanical issues. It caused me to arrive late in Dallas, so I tried to move flights so I would not miss my dinner meeting. First attempt, that flight was delayed, Second attempt, that flight was also delayed. Got back on original flight, the mechanical issue was NOT fixed, so we de-planed and had to find the new gate. Overall, was which was 4 hours delayed and missed the dinner meeting. Friday return, flight from Orlando was on time and landed early. Then the next flight was delayed due to crew coming in late, and them waiting on other passengers. After 90 minutes of delay, we boarded, and then were informed the Fist Officer could not fly due to time constraints. At 12:15 AM we were offered a hotel for a 4:20 boarding flight. Not happening. DFW was COLD and no place to sleep. Plane delayed again to 6:50, but was late taking off AGAIN. Finally landed in Tucson at around 8AM. Should be refunded 75% of the ticket costs due to negligence, nothing more.

Cabin was bone dry, no humidity whatsoever, and pretty warm; and beverage service didn't start for at least an hour. I had to go to the back for water and the FAs tried telling me it was always this way for all Miami flights, which is complete nonsense. Avoid the MAX8 like the plague.

Im sitting here waiting over an hour for my golf clubs

Flight was 2+ hours delayed and they “misplaced” all 3 of our checked-in bags.

Overall, really good experience, on time and the comfort was there. Wi-Fi was easy to connect

Flight was delayed 5 hours only to be cancelled at 1:30am. I did not get on the rescheduled flight because of worry it would be delayed (which it was). I needed to drive home. Horrible.

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

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