$510 Find Cheap Flights from Key West to Costa Rica

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Key West to Costa Rica departing on 3/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Book Cheap Key West to Costa Rica Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Key West to Costa Rica that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Key West to Costa Rica

Tue, Mar 17 - Thu, Mar 19
Spirit Airlines Logo
12:25 pm - 11:14 am
EYW
-
SJO
24h 49m
1 stop
Spirit Airlines Logo
12:19 pm - 1:37 pm
SJO
-
EYW
23h 18m
1 stop
$510Spirit Airlines
Tue, Mar 17 - Thu, Mar 19
Multiple Airlines Logo
1:01 pm - 11:14 am
EYW
-
SJO
24h 13m
2 stops
Multiple Airlines Logo
12:19 pm - 1:37 pm
SJO
-
EYW
23h 18m
1 stop
$513Multiple Airlines
Thu, Apr 23 - Sun, Apr 26
Spirit Airlines Logo
12:26 pm - 11:33 am
EYW
-
SJO
25h 07m
1 stop
Spirit Airlines Logo
12:38 pm - 1:35 pm
SJO
-
EYW
22h 57m
1 stop
$516Spirit Airlines
Wed, Apr 22 - Wed, Apr 29
American Airlines Logo
8:05 am - 7:07 pm
EYW
-
SJO
13h 02m
2 stops
American Airlines Logo
6:30 am - 10:36 pm
SJO
-
EYW
14h 06m
2 stops
$561American Airlines
Mon, Apr 20 - Thu, Apr 23
American Airlines Logo
6:45 am - 11:07 am
EYW
-
SJO
6h 22m
1 stop
American Airlines Logo
2:22 pm - 10:58 pm
SJO
-
EYW
6h 36m
1 stop
$576American Airlines
Wed, Apr 22 - Wed, Apr 29
American Airlines Logo
8:05 am - 7:07 pm
EYW
-
SJO
13h 02m
2 stops
American Airlines Logo
6:30 am - 10:36 pm
SJO
-
EYW
14h 06m
2 stops
$581American Airlines
Wed, Apr 22 - Wed, Apr 29
American Airlines Logo
11:24 am - 7:07 pm
EYW
-
SJO
9h 43m
1 stop
American Airlines Logo
6:30 am - 10:58 pm
SJO
-
EYW
14h 28m
1 stop
$586American Airlines
Wed, Apr 22 - Wed, Apr 29
American Airlines Logo
6:45 am - 1:08 pm
EYW
-
SJO
8h 23m
1 stop
American Airlines Logo
2:22 pm - 10:58 pm
SJO
-
EYW
6h 36m
1 stop
$594American Airlines
Wed, Apr 22 - Wed, Apr 29
American Airlines Logo
3:58 pm - 7:07 pm
EYW
-
SJO
5h 09m
1 stop
American Airlines Logo
2:22 pm - 10:58 pm
SJO
-
EYW
6h 36m
1 stop
$606American Airlines
Mon, Apr 20 - Thu, Apr 23
American Airlines Logo
4:20 pm - 11:07 am
EYW
-
SJO
20h 47m
2 stops
American Airlines Logo
6:30 am - 10:36 pm
SJO
-
EYW
14h 06m
2 stops
$611American Airlines
Booking Insights

KAYAK's insights & trends for Key West to Costa Rica flights

Get data-powered insights and trends into flights from Key West to Costa Rica to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Key West to Costa Rica?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Key West to Costa Rica were found on Spirit Airlines ($516) and American Airlines ($561).

Good to know

Cheapest flight$510
Flight from Key West to San José

FAQs - booking Costa Rica flights

  • How does KAYAK find such low prices on flights from Key West to Costa Rica?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Key West to Costa Rica.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Key West to Costa Rica?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Key West to Costa Rica is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Key West to Costa Rica?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Key West to Costa Rica with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Key West to Costa Rica?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Key West to Costa Rica up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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.
7.1
American AirlinesOverall score based on 11381 reviews
6.9Entertainment
7.5Boarding
8.0Crew
7.2Comfort
6.4Food
Airline reviews

why would I bother with this airline and pick seats when I am asked to move for a weight imbalance

2.0 MediocreBenjamin, Mar 2026
GNV - CLT
Read more American Airlines reviews

why would I bother with this airline and pick seats when I am asked to move for a weight imbalance

Overall good. The pilots and flight attendants are excellent! The equipment was the issue on my First flight as they had to wait for a part to be installed. So the take off was at least 30 minutes later.

For my arriving destination, we were delayed multiple times to the point that we arrived 6 hours after we were originally scheduled. On my flight home, they overbooked and involuntarily removed passengers (including me) from the plane. It was not a good experience.

Boarding is always an ordeal. Less dogs on flights. I am highly allergic to dogs and cats. Why are there so many animals these days?

Horrible. Got delayed many hours because their pilot wasn't trained for night landing at the airport and a rain delay made it a night landing. We have to wait hours for a qualified crew. They give us 12 dollar meal vouchers but most everything in the airport was closed and definitely more expensive than the vouchers.

I am an AA flyer for a very long time... AA has yet to disappoint.

Everything was good. Flight was very full so crew was busy. After we boarded and plane pulled away from the gate, we were delayed about 40 minutes- sitting on the runway - due to weather en route or at the destination. While weather is not the fault of the airline- it’s terrible to sit on a plane and not moving.

The smell from the bathroom kept wafting through the cabin. It made people sick.

Waited for oxygen tanks for 30 minutes after boarding was complete.

Awful. Original flight was delayed 5 hours. Had to to take a connecting flight instead of direct. Had a 4 hour layover. I missed all of my morning meetings getting in 5 hours later than I was supposed to and had to change to take a later flight the next day to get them back in which cia time another $150.

Everything you need to know for your flight from Key West to Costa Rica

Information on your arrival and departure airports