$519 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.

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

The cheapest fare from Key West to Costa Rica in the last week was $682 round-trip, to San José Juan Santamaria Intl (SJO).

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

$519
Beat the crowds with an average 65% drop in travelers.
The most popular month to fly with an average 40% increase in travelers.
One-way flight from Key West to Liberia

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?

    Fares from Key West to Costa Rica are around their usual level right now. A round-trip under $573 is considered a good deal, so it's worth keeping an eye out, or setting a Price Alert to catch price changes.

  • 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 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 12173 reviews
7.9Crew
7.4Boarding
6.8Entertainment
6.4Food
7.1Comfort
Airline reviews

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.

2.0 MediocreSean, Oct 2026
Read more American Airlines reviews

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.

When there are many passengers who are going to miss a connecting flight, they always say please let them off first. But the flight attendant never manages that part of the process. It would be helpful if they would repeat that and stress that to the other passengers.

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

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