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Cheap flights from Key West to Costa Rica from $530

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 6/11. 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
0 bags

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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
12:05 pm - 3:11 pm
EYW
-
SJO
29h 06m
1 stop
Multiple Airlines Logo
7:07 am - 11:25 am
SJO
-
EYW
26h 18m
1 stop
$530Multiple Airlines
Thu, Jun 11 - Wed, Jun 17
Multiple Airlines Logo
12:05 pm - 3:11 pm
EYW
-
SJO
29h 06m
1 stop
Multiple Airlines Logo
7:07 am - 11:27 am
SJO
-
EYW
26h 20m
1 stop
$543Multiple Airlines
Thu, Jun 11 - Thu, Jun 18
Multiple Airlines Logo
12:05 pm - 3:18 pm
EYW
-
SJO
29h 13m
1 stop
Multiple Airlines Logo
9:35 am - 11:27 am
SJO
-
EYW
23h 52m
1 stop
$569Multiple Airlines
Thu, May 21 - Thu, May 28
Multiple Airlines Logo
12:05 pm - 3:18 pm
EYW
-
SJO
29h 13m
1 stop
Multiple Airlines Logo
9:35 am - 11:02 am
SJO
-
EYW
23h 27m
2 stops
$589Multiple Airlines
Thu, May 21 - Thu, May 28
Multiple Airlines Logo
10:31 am - 3:11 pm
EYW
-
SJO
30h 40m
2 stops
Multiple Airlines Logo
7:07 am - 11:25 am
SJO
-
EYW
26h 18m
1 stop
$639Multiple Airlines
Mon, Jun 15 - Sat, Jun 20
Multiple Airlines Logo
12:14 pm - 3:11 pm
EYW
-
SJO
28h 57m
2 stops
Multiple Airlines Logo
7:07 am - 11:25 am
SJO
-
EYW
26h 18m
1 stop
$644Multiple Airlines
Thu, Jun 11 - Wed, Jun 17
Multiple Airlines Logo
12:07 pm - 3:11 pm
EYW
-
SJO
29h 04m
1 stop
Multiple Airlines Logo
7:07 am - 11:25 am
SJO
-
EYW
26h 18m
1 stop
$660Multiple Airlines
Mon, Jun 15 - Sat, Jun 20
Multiple Airlines Logo
11:04 am - 9:06 am
EYW
-
SJO
24h 02m
2 stops
Multiple Airlines Logo
7:07 am - 11:27 am
SJO
-
EYW
26h 20m
1 stop
$672Multiple Airlines
Thu, Jun 11 - Thu, Jun 18
American Airlines Logo
7:29 pm - 11:49 am
EYW
-
SJO
18h 20m
2 stops
American Airlines Logo
3:08 pm - 12:16 pm
SJO
-
EYW
19h 08m
2 stops
$679American Airlines
Thu, Jun 11 - Wed, Jun 17
American Airlines Logo
7:40 pm - 7:23 pm
EYW
-
SJO
25h 43m
1 stop
American Airlines Logo
3:08 pm - 10:56 am
SJO
-
EYW
17h 48m
1 stop
$712American Airlines
Fri, Jun 5 - Mon, Jun 8

American Airlines flights from Key West to Costa Rica

Our best American Airlines deals on Key West to Costa Rica flight tickets
American Airlines
Jun 11
EYW7:29 pmKey West
18h 20m
2 stops
SJO11:49 amSan José Juan Santamaria Intl
Jun 17
SJO3:08 pmSan José Juan Santamaria Intl
19h 08m
2 stops
EYW12:16 pmKey West
$679
American Airlines
Jun 5
EYW7:40 pmKey West
25h 43m
1 stop
SJO7:23 pmSan José Juan Santamaria Intl
Jun 8
SJO3:08 pmSan José Juan Santamaria Intl
17h 48m
1 stop
EYW10:56 amKey West
$712
American Airlines
Jun 5
EYW11:28 amKey West
26h 21m
1 stop
SJO11:49 amSan José Juan Santamaria Intl
Jun 8
SJO2:00 pmSan José Juan Santamaria Intl
21h 07m
2 stops
EYW1:07 pmKey West
$716

GOL flights from Key West to Costa Rica

Our best GOL deals on Key West to Costa Rica flight tickets
GOL
Jun 4
EYW11:28 amKey West
9h 55m
1 stop
SJO7:23 pmSan José Juan Santamaria Intl
Jun 4
SJO11:59 pmSan José Juan Santamaria Intl
14h 53m
1 stop
EYW4:52 pmKey West
$2,794
GOL
Jun 4
EYW1:39 pmKey West
7h 44m
1 stop
SJO7:23 pmSan José Juan Santamaria Intl
Jun 4
SJO11:59 pmSan José Juan Santamaria Intl
13h 25m
2 stops
EYW3:24 pmKey West
$2,837

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 May 11, 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 - SJO

EYWSJO

Key West

Thu 6/11

12:05 pm-3:11 pm

1 stop29h 06m

San José Juan Santamaria Intl

Wed 6/17

7:07 am-11:25 am

1 stop26h 18m

$530

Key WestSan José

EYW - SJO

EYWSJO

Key West

Thu 6/11

12:05 pm-3:11 pm

1 stop29h 06m

San José Juan Santamaria Intl

Thu 6/18

7:07 am-11:27 am

1 stop26h 20m

$543

Key WestSan José

EYW - SJO

EYWSJO

Key West

Thu 5/21

12:05 pm-3:18 pm

1 stop29h 13m

San José Juan Santamaria Intl

Thu 5/28

9:35 am-11:27 am

1 stop23h 52m

$569

Key WestSan José

EYW - SJO

EYWSJO

Key West

Thu 5/21

12:05 pm-3:18 pm

1 stop29h 13m

San José Juan Santamaria Intl

Thu 5/28

9:35 am-11:02 am

2 stops23h 27m

$589

Key WestSan José

EYW - SJO

EYWSJO

Key West

Mon 6/15

10:31 am-3:11 pm

2 stops30h 40m

San José Juan Santamaria Intl

Sat 6/20

7:07 am-11:25 am

1 stop26h 18m

$639

Key WestSan José

EYW - SJO

EYWSJO

Key West

Thu 6/11

12:14 pm-3:11 pm

2 stops28h 57m

San José Juan Santamaria Intl

Wed 6/17

7:07 am-11:25 am

1 stop26h 18m

$644

Key WestSan José

EYW - SJO

EYWSJO

Key West

Mon 6/15

12:07 pm-3:11 pm

1 stop29h 04m

San José Juan Santamaria Intl

Sat 6/20

7:07 am-11:25 am

1 stop26h 18m

$660

Key WestSan José

EYW - SJO

EYWSJO

Key West

Thu 6/11

11:04 am-9:06 am

2 stops24h 02m

San José Juan Santamaria Intl

Thu 6/18

7:07 am-11:27 am

1 stop26h 20m

$672
Quickest round-trip

Key WestSan José

EYW - SJO

EYWSJO

Key West

Thu 6/11

7:29 pm-11:49 am

2 stops18h 20m

San José Juan Santamaria Intl

Wed 6/17

3:08 pm-12:16 pm

2 stops19h 08m

$679

Key WestSan José

EYW - SJO

EYWSJO

Key West

Fri 6/5

7:40 pm-7:23 pm

1 stop25h 43m

San José Juan Santamaria Intl

Mon 6/8

3:08 pm-10:56 am

1 stop17h 48m

$712

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

29h 06m

Direct flights

None
The fastest flight from Key West to Costa Rica takes 29h 06m
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
11,665 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.

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