Latest deals
FAQs
Reviews
Price Alerts

Cheap flights from Key West to Costa Rica from $619

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Key West to Costa Rica departing on 1/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Key West to Costa Rica

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:16 pm - 12:49 pmEYW  Key West-SJO San José Juan Santamaria Intl
24h 33m1 stop Tampa
Multiple Airlines Logo
7:00 am - 10:19 amSJO  San José Juan Santamaria Intl-EYW Key West
26h 19m1 stop Orlando
$619Multiple Airlines
Tue, Jan 12 - Mon, Jan 18
Multiple Airlines Logo
1:16 pm - 12:49 pmEYW  Key West-SJO San José Juan Santamaria Intl
24h 33m1 stop Tampa
Multiple Airlines Logo
11:55 pm - 10:39 amSJO  San José Juan Santamaria Intl-EYW Key West
33h 44m2 stops Toronto Pearson Intl Orlando
$737Multiple Airlines
Tue, Jan 12 - Mon, Jan 18
American Airlines Logo
6:43 pm - 12:34 pmEYW  Key West-SJO San José Juan Santamaria Intl
18h 51m2 stops Charlotte Douglas Miami
American Airlines Logo
8:00 am - 9:47 pmSJO  San José Juan Santamaria Intl-EYW Key West
12h 47m2 stops Miami Charlotte Douglas
$752American Airlines
Tue, Jan 12 - Mon, Jan 18
Multiple Airlines Logo
10:59 am - 3:11 pmEYW  Key West-SJO San José Juan Santamaria Intl
6h 12m1 stop Orlando
Multiple Airlines Logo
7:00 am - 9:24 amSJO  San José Juan Santamaria Intl-EYW Key West
24h 24m2 stops Mexico City Benito Juarez Tampa
$772Multiple Airlines
Fri, Sep 11 - Fri, Sep 18
American Airlines Logo
10:21 am - 8:07 pmEYW  Key West-SJO San José Juan Santamaria Intl
11h 46m1 stop Miami
American Airlines Logo
6:00 am - 7:17 pmSJO  San José Juan Santamaria Intl-EYW Key West
11h 17m1 stop Miami
$788American Airlines
Fri, Sep 11 - Fri, Sep 18
American Airlines Logo
3:30 pm - 11:59 amEYW  Key West-SJO San José Juan Santamaria Intl
22h 29m2 stops Charlotte Douglas Miami
American Airlines Logo
6:00 am - 1:11 pmSJO  San José Juan Santamaria Intl-EYW Key West
29h 11m2 stops Miami Charlotte Douglas
$793American Airlines
Fri, Sep 11 - Fri, Sep 18
Multiple Airlines Logo
11:04 am - 3:11 pmEYW  Key West-SJO San José Juan Santamaria Intl
29h 07m1 stop Orlando
Multiple Airlines Logo
7:00 am - 10:19 amSJO  San José Juan Santamaria Intl-EYW Key West
26h 19m1 stop Orlando
$794Multiple Airlines
Tue, Nov 24 - Sun, Nov 29
American Airlines Logo
7:57 pm - 1:06 pmEYW  Key West-SJO San José Juan Santamaria Intl
18h 09m2 stops Miami Charlotte Douglas
American Airlines Logo
6:20 am - 7:27 pmSJO  San José Juan Santamaria Intl-EYW Key West
12h 07m1 stop Miami
$882American Airlines
Tue, Nov 24 - Sun, Nov 29
Multiple Airlines Logo
12:45 pm - 9:35 amEYW  Key West-SJO San José Juan Santamaria Intl
45h 50m3 stops Boston Logan Intl New York John F Kennedy Intl Guatemala City La Aurora
Multiple Airlines Logo
4:15 pm - 12:24 pmSJO  San José Juan Santamaria Intl-EYW Key West
43h 09m3 stops Guatemala City La Aurora New York John F Kennedy Intl Boston Logan Intl
$2,437Multiple Airlines
Tue, Nov 24 - Sun, Nov 29
Multiple Airlines Logo
1:00 pm - 9:35 amEYW  Key West-SJO San José Juan Santamaria Intl
45h 35m3 stops Boston Logan Intl New York John F Kennedy Intl Guatemala City La Aurora
Multiple Airlines Logo
12:20 pm - 5:11 pmSJO  San José Juan Santamaria Intl-EYW Key West
27h 51m2 stops Mexico City Benito Juarez Atlanta Hartsfield-Jackson
$4,967Multiple Airlines
Tue, Jan 12 - Mon, Jan 18

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

American Airlines flights from Key West to Costa Rica

Our best American Airlines deals on Key West to Costa Rica flight tickets
American Airlines
Jan 12
EYW6:43 pmKey West
18h 51m
2 stops
SJO12:34 pmSan José Juan Santamaria Intl
Jan 18
SJO8:00 amSan José Juan Santamaria Intl
12h 47m
2 stops
EYW9:47 pmKey West
$752
American Airlines
Sep 11
EYW10:21 amKey West
11h 46m
1 stop
SJO8:07 pmSan José Juan Santamaria Intl
Sep 18
SJO6:00 amSan José Juan Santamaria Intl
11h 17m
1 stop
EYW7:17 pmKey West
$788
American Airlines
Sep 11
EYW3:30 pmKey West
22h 29m
2 stops
SJO11:59 amSan José Juan Santamaria Intl
Sep 18
SJO6:00 amSan José Juan Santamaria Intl
29h 11m
2 stops
EYW1:11 pmKey West
$793

momondo Fare Finder

 
Customize your flight search to find flights from Key West to Costa Rica that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 14, 2026.
Use the filters below to find and compare flights from Key West to Costa Rica that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Key WestSan José

EYW Key West - SJO San José Juan Santamaria Intl

EYWSJO

Key West

Tue 1/12

1:16 pm-12:49 pm

1 stop24h 33m

San José Juan Santamaria Intl

Mon 1/18

7:00 am-10:19 am

1 stop26h 19m

$619

Key WestSan José

EYW Key West - SJO San José Juan Santamaria Intl

EYWSJO

Key West

Tue 1/12

1:16 pm-12:49 pm

1 stop24h 33m

San José Juan Santamaria Intl

Mon 1/18

11:55 pm-10:39 am

2 stops33h 44m

$737

Key WestSan José

EYW Key West - SJO San José Juan Santamaria Intl

EYWSJO

Key West

Tue 1/12

6:43 pm-12:34 pm

2 stops18h 51m

San José Juan Santamaria Intl

Mon 1/18

8:00 am-9:47 pm

2 stops12h 47m

$752

Key WestSan José

EYW Key West - SJO San José Juan Santamaria Intl

EYWSJO

Key West

Fri 9/11

10:59 am-3:11 pm

1 stop6h 12m

San José Juan Santamaria Intl

Fri 9/18

7:00 am-9:24 am

2 stops24h 24m

$772
Quickest round-trip

Key WestSan José

EYW Key West - SJO San José Juan Santamaria Intl

EYWSJO

Key West

Fri 9/11

10:21 am-8:07 pm

1 stop11h 46m

San José Juan Santamaria Intl

Fri 9/18

6:00 am-7:17 pm

1 stop11h 17m

$788

Key WestSan José

EYW Key West - SJO San José Juan Santamaria Intl

EYWSJO

Key West

Fri 9/11

3:30 pm-11:59 am

2 stops22h 29m

San José Juan Santamaria Intl

Fri 9/18

6:00 am-1:11 pm

2 stops29h 11m

$793

Key WestSan José

EYW Key West - SJO San José Juan Santamaria Intl

EYWSJO

Key West

Tue 11/24

11:04 am-3:11 pm

1 stop29h 07m

San José Juan Santamaria Intl

Sun 11/29

7:00 am-10:19 am

1 stop26h 19m

$794

Key WestSan José

EYW Key West - SJO San José Juan Santamaria Intl

EYWSJO

Key West

Tue 11/24

7:57 pm-1:06 pm

2 stops18h 09m

San José Juan Santamaria Intl

Sun 11/29

6:20 am-7:27 pm

1 stop12h 07m

$882

Key WestSan José

EYW Key West - SJO San José Juan Santamaria Intl

EYWSJO

Key West

Tue 11/24

12:45 pm-9:35 am

3 stops45h 50m

San José Juan Santamaria Intl

Sun 11/29

4:15 pm-12:24 pm

3 stops43h 09m

$2,437

Key WestSan José

EYW Key West - SJO San José Juan Santamaria Intl

EYWSJO

Key West

Tue 1/12

1:00 pm-9:35 am

3 stops45h 35m

San José Juan Santamaria Intl

Mon 1/18

12:20 pm-5:11 pm

2 stops27h 51m

$4,967

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Key West to Costa Rica flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Key West to Costa Rica

Fastest flight time

6h 12m

Direct flights

None
The fastest flight from Key West to Costa Rica takes 6h 12m
There are no direct flights from Key West to Costa Rica. There are no popular flight routes from Key West to Costa Rica.
Search flight deals

Frequently asked questions about flying from Key West to Costa Rica

  • When did momondo last update prices for flights from Key West Airport to Costa Rica?

    Prices for flights from Key West Airport to Costa Rica refresh daily.

  • How many operators does momondo search for flights from Key West Airport to Costa Rica?

  • How old do you have to be to fly from Key West Airport to Costa Rica?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Key West Airport to Costa Rica.

  • What documentation or ID do you need to fly to Costa Rica?

    The travel and health documents you'll need for your trip to Costa Rica may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Costa Rica. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Key West to Costa Rica

Compare and see reviews for airlines that fly from Key West to Costa Rica with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $523Free CancellationRating
7.1
11,927 reviews
Search American Airlines flights

Frequently asked questions about flying from Key West to Costa Rica

  • How do I get Price Alerts for flights from Key West to Costa Rica?

    Confirm your travel details to search for the latest offers for flights from Key West to Costa Rica. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Key West to Costa Rica with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

Why should I use momondo to find a flight deal from Key West to Costa Rica?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Costa Rica from Key West.

Can I find flights from Key West to Costa Rica with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Key West to Costa Rica flights to just show those with flexible booking policies.

How can momondo help me find flights from Key West to Costa Rica?

momondo helps you find the best flight between Key West and Costa Rica by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Key West to Costa Rica right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Costa Rica, momondo offers a useful price alert feature which will track prices for flights to Costa Rica from Key West and alert you when they change.

An easier way to manage your Costa Rica trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 9/13
Sun 9/20
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Costa Rica

Popular cities in Costa Rica

Popular flights according to clicks in the last 7 days on momondo
Flights to San Joséfrom $203
Flights to Liberiafrom $299
Flights to Limon
Flights to Tamarindo
Flights to Tortuguero
Flights to Golfito
Flights to Tambor