$135 Find Cheap Flights from Key West to Costa Rica

This is the cheapest one-way 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 3/8. 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

Mon, Feb 23 - Thu, Feb 26
Multiple Airlines Logo
1:06 pm - 11:40 am
EYW
-
SJO
23h 34m
1 stop
Multiple Airlines Logo
1:31 pm - 1:30 pm
SJO
-
EYW
22h 59m
1 stop
$346Multiple Airlines
Mon, Feb 23 - Thu, Feb 26
Multiple Airlines Logo
1:06 pm - 11:40 am
EYW
-
SJO
23h 34m
1 stop
Multiple Airlines Logo
1:31 pm - 9:09 am
SJO
-
EYW
18h 38m
2 stops
$379Multiple Airlines
Mon, Feb 23 - Thu, Feb 26
Spirit Airlines Logo
2:25 pm - 11:40 am
EYW
-
SJO
22h 15m
2 stops
Spirit Airlines Logo
12:35 pm - 1:30 pm
SJO
-
EYW
23h 55m
3 stops
$479Spirit Airlines
Mon, Feb 23 - Thu, Feb 26
Spirit Airlines Logo
2:25 pm - 11:40 am
EYW
-
SJO
22h 15m
3 stops
Spirit Airlines Logo
12:35 pm - 1:30 pm
SJO
-
EYW
23h 55m
3 stops
$540Spirit Airlines
Fri, Apr 24 - Sat, May 2
American Airlines Logo
3:58 pm - 7:07 pm
EYW
-
SJO
5h 09m
1 stop
American Airlines Logo
12:10 pm - 10:58 pm
SJO
-
EYW
8h 48m
1 stop
$572American Airlines
Fri, Apr 24 - Sat, May 2
American Airlines Logo
4:20 pm - 1:08 pm
EYW
-
SJO
22h 48m
2 stops
American Airlines Logo
6:30 am - 10:36 pm
SJO
-
EYW
14h 06m
2 stops
$577American Airlines
Mon, Feb 23 - Thu, Feb 26
American Airlines Logo
4:40 pm - 12:31 pm
EYW
-
SJO
20h 51m
2 stops
American Airlines Logo
3:59 pm - 3:57 pm
SJO
-
EYW
22h 58m
2 stops
$752American Airlines
Fri, Mar 13 - Fri, Mar 20
American Airlines Logo
7:42 pm - 7:33 pm
EYW
-
SJO
25h 51m
1 stop
American Airlines Logo
7:00 am - 7:12 pm
SJO
-
EYW
10h 12m
1 stop
$810American Airlines
Fri, Mar 13 - Fri, Mar 20
Multiple Airlines Logo
2:35 pm - 11:14 am
EYW
-
SJO
22h 39m
1 stop
Multiple Airlines Logo
12:19 pm - 2:42 pm
SJO
-
EYW
24h 23m
2 stops
$941Multiple Airlines
Fri, Mar 13 - Fri, Mar 20
American Airlines Logo
7:45 am - 7:33 pm
EYW
-
SJO
13h 48m
2 stops
American Airlines Logo
7:00 am - 10:37 pm
SJO
-
EYW
13h 37m
2 stops
$1,518American 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 ($479) and American Airlines ($572).

Find deals

Good to know

Cheapest flight$135
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.
7.2
American AirlinesOverall score based on 11275 reviews
6.4Food
7.5Boarding
6.9Entertainment
7.2Comfort
8.0Crew
Airline reviews

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.

2.0 MediocreSalim, Feb 2026
JAX - PHL
Read more American Airlines reviews

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.

On time on a day with lots of weather cancellations on other flights. Thank you for getting me home during a winter storm!

Don't change gate multiple times make people run across the airport. Announce delays in a timely manner. Have maintenance crew ready. Don't delay and keep passengers on the plane for 3 hrs. on tarmac.

The attendants were kind and helpful. A sugar-free drink would have been very welcome.

Little warm on the plane and delayed for an hour

UGH I HAD TO MISS MY FIRST FLIGHT TO TAMPA CAUSE OF THE 10 MINUTE DELAY OF THE ORLANDO TO MIAMI ONE SO THEY HAD ME GET ANOTHER TICKET. I AM NOT HAPPY AT ALL BECAUSE IT MADE ME MISS MY CONNECTING FLIGHT FROM TAMPA TO LONDON AND FORCED ME TO MISS A DAY AT MY ROOM IN THE UK.

Wish they didnt delay off-boarding for 10 minutes so i could connect to my flight from miami to tampa

It was fine. My connection in Charlotte to go to WPB was too late and I had to spend the night in the Charlotte Airport in the mini suites.

Boarding was organized and timely. Food was mediocre, especially for first class travel.

We were 4+ hours delayed. AA is absolutely obnoxious. They just kept pushing back the time to the point where we did not get into Vegas until after midnight when we were supposed to arrive like 845pm.

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

Information on your arrival and departure airports

Key West (EYW)