Costa Rica

$111+ Cheap flights from Key Largo, FL to Costa Rica

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SJO
mars 30 — avr. 61
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Cheap flight deals from Key Largo to Costa Rica

Keep the following information in mind while searching for Key Largo to Costa Rica flight deals. Data was last updated mars 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$240
(Cheapflightsfares)

One-way from

$113
(Orbitz)

Popular in

December

Cheapest in

October

Average price

$379
Provider with most accurate pricing for Miami-San José Juan Santamaria Intl flight deals.
Provider most trusted by Cheapflights users for Miami-San José Juan Santamaria Intl flights.
From Key Largo to Costa Rica
One-way flight from Key Largo to Costa Rica
Highest demand for flights based on searches. 15% potential increase in price ($70 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
Average for round-trip flights in March 2025

Find flight deals from Key Largo to Costa Rica

Cheapest flights from Key Largo to Costa Rica
Explore the most affordable flight options available from Key Largo to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on mars 25, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/89:40 pmMIA - SJO
Nonstop3h 00mAvianca
mar. 4/158:25 amSJO - MIA
Nonstop2h 50mAvianca
Deal found 3/25$240
This American Airlines deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 6/127:09 pmMIA - SJO
Nonstop3h 00mAmerican Airlines
mer. 6/186:18 amSJO - MIA
Nonstop3h 00mAmerican Airlines
Deal found 3/24$251
This Kiwi.com deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 5/82:16 pmMIA - SJO
1 stop6h 32mCopa Airlines
mar. 5/1310:57 amSJO - MIA
1 stop7h 02mCopa Airlines
Deal found 3/24$252
This Trip.com deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 8/92:28 pmMIA - SJO
Nonstop2h 49mMultiple Airlines
lun. 8/256:10 amSJO - MIA
1 stop12h 00mMultiple Airlines
Deal found 3/24$260
This Delta deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/306:00 amMIA - SJO
1 stop7h 53mDelta
mer. 10/81:13 pmSJO - MIA
1 stop7h 38mDelta
Deal found 3/24$318
This Mytrip deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 4/238:58 amMIA - SJO
2 stops27h 26mSpirit Airlines
mer. 4/3012:23 pmSJO - MIA
2 stops17h 30mSpirit Airlines
Deal found 3/24$324
This United Airlines deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/28:40 amMIA - SJO
1 stop27h 31mUnited Airlines
ven. 6/135:30 amSJO - MIA
1 stop15h 15mUnited Airlines
Deal found 3/24$344
This American Airlines deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 6/2112:10 pmMIA - LIR
Nonstop3h 05mAmerican Airlines
mer. 6/2512:55 pmLIR - MIA
Nonstop3h 00mAmerican Airlines
Deal found 3/23$545
This Southwest deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 7/135:55 amMIA - LIR
1 stop6h 55mSouthwest
sam. 7/1911:50 amLIR - MIA
1 stop9h 30mSouthwest
Deal found 3/23$556
This United Airlines deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 5/26:25 amMIA - LIR
1 stop9h 58mUnited Airlines
mar. 5/63:25 pmLIR - MIA
1 stop18h 04mUnited Airlines
Deal found 3/23$569
This Mytrip deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 4/101:53 pmMIA - LIR
3 stops25h 57mMultiple Airlines
lun. 4/146:40 amLIR - MIA
2 stops16h 58mMultiple Airlines
Deal found 3/23$578
This Delta deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 5/36:00 amMIA - LIR
1 stop7h 37mDelta
sam. 5/101:05 pmLIR - MIA
1 stop7h 59mDelta
Deal found 3/24$587

Cheapflights Fare Finder

Customize your flight search to find flights from Key Largo 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, Cheapflights users made 2,558,603 searches. Data last updated mars 25, 2025.
Use the filters below to find and compare flights from Key Largo to Costa Rica that are best for you.

Fly from

Key Largo

Fly to

Costa Rica

Route

Depart

Return

Price

MiamiSan José

MIA - SJO

MIASJO

Miami

mar. 4/8

9:40 pm-10:40 pm

Nonstop3h 00m

San José Juan Santamaria Intl

mar. 4/15

8:25 am-1:15 pm

Nonstop2h 50m

$240

MiamiSan José

MIA - SJO

MIASJO

Miami

jeu. 5/8

2:16 pm-6:48 pm

1 stop6h 32m

San José Juan Santamaria Intl

mar. 5/13

10:57 am-7:59 pm

1 stop7h 02m

$252

MiamiSan José

MIA - SJO

MIASJO

Miami

mar. 6/17

7:09 pm-8:09 pm

Nonstop3h 00m

San José Juan Santamaria Intl

mar. 6/24

6:18 am-11:18 am

Nonstop3h 00m

$265

MiamiSan José

MIA - SJO

MIASJO

Miami

jeu. 7/24

3:25 pm-11:35 pm

2 stops10h 10m

San José Juan Santamaria Intl

dim. 8/24

8:14 am-12:57 pm

Nonstop2h 43m

$275

MiamiSan José

MIA - SJO

MIASJO

Miami

mer. 4/23

11:15 am-10:24 am

3 stops25h 09m

San José Juan Santamaria Intl

dim. 4/27

12:55 am-7:53 am

2 stops28h 58m

$368

MiamiLiberia

MIA - LIR

MIALIR

Miami

sam. 6/21

12:10 pm-1:15 pm

Nonstop3h 05m

Liberia

mer. 6/25

12:55 pm-5:55 pm

Nonstop3h 00m

$545

MiamiLiberia

MIA - LIR

MIALIR

Miami

mar. 5/27

6:30 am-2:23 pm

1 stop9h 53m

Liberia

mar. 6/3

11:05 am-10:45 pm

1 stop9h 40m

$568

MiamiLiberia

MIA - LIR

MIALIR

Miami

jeu. 4/10

1:53 pm-1:50 pm

3 stops25h 57m

Liberia

lun. 4/14

6:40 am-1:38 am

2 stops16h 58m

$578

MiamiLiberia

MIA - LIR

MIALIR

Miami

sam. 5/3

6:00 am-11:37 am

1 stop7h 37m

Liberia

sam. 5/10

1:05 pm-11:04 pm

1 stop7h 59m

$587

MiamiLiberia

MIA - LIR

MIALIR

Miami

dim. 4/27

5:15 am-1:10 pm

1 stop9h 55m

Liberia

ven. 5/2

2:05 pm-8:55 am

2 stops16h 50m

$612

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 35 results
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Best time to book a flight from Key Largo to Costa Rica

Have a flexible travel schedule? Discover the best time to fly to Costa Rica from Key Largo with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Key Largo to Costa Rica

What is the cheapest month to book a flight from Key Largo to Costa Rica?

Currently, September is the cheapest month in which you can book a flight from Key Largo to Costa Rica (average of $398). Flying from Key Largo to Costa Rica in March is currently the most expensive (average of $555). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from KE9 to CR?

Find hourly flight availability from Key Largo to Costa Rica. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated mars 25, 2025.

When flying from Key Largo to Costa Rica, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Key Largo to Costa Rica?

Use this chart to determine the cheapest time to fly round-trip from Key Largo to Costa Rica. Price data was last updated on October 20, 2024.

Travelers seeking maximum savings on their Key Largo to Costa Rica flight should consider departing on Monday at noon when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Key Largo to Costa Rica

Explore weekly flight availability from Key Largo to Costa Rica. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated mars 25, 2025.

The most flights from KE9 to CR0 are scheduled on a Friday (11 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

Rainfall in Costa Rica by month

Plan your trip to Costa Rica by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Costa Rica ranges from 0.0 - 11.8 inches per month. September is typically the wettest month, when rainfall can reach 11.8 in. February is typically the driest time to visit Costa Rica when rainfall is around 0.0 in.

Temperature in Costa Rica by month

Plan your trip to Costa Rica by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Costa Rica, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 64.4 F).

Reviews of airlines servicing Costa Rica

Get insights into the airlines that provide service to Costa Rica. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Costa Rica. Reviews last updated mars 25, 2025.
Get a feel of what it's like to fly with Japan Airlines, Delta and Alaska Airlines from Key Largo to Costa Rica by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.2

Boarding

8.4

Crew

8.7

Overall

8.3

Food

7.7

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

Comfort

8.2

Boarding

8.4

Crew

8.7

Overall

8.3

Food

7.7

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
8.0
Very good

Comfort

8.2

Boarding

8.4

Crew

8.7

Overall

8.3

Food

7.7

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

Comfort

8.2

Boarding

8.4

Crew

8.7

Overall

8.3

Food

7.7

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

Comfort

8.2

Boarding

8.4

Crew

8.7

Overall

8.3

Food

7.7

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

Comfort

8.2

Boarding

8.4

Crew

8.7

Overall

8.3

Food

7.7

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

Related info for your journey

Find useful and relevant information for your journey from Key Largo to Costa Rica. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How popular is this Key Largo to Costa Rica flight route?

  • What are the cheapest airlines to fly from Key Largo to Costa Rica one-way?

    One-way options have recently been found by users for as low as $113 on Arajet. Other airlines that offer cheap prices include Avianca from $115 and Copa Airlines from $126 one-way.

  • What are the most reliable airlines from Key Largo to Costa Rica?

    Consider American Airlines (82%), Iberia (82%) or British Airways (80%) when booking your flight. These represent the most reliable airlines when flying from Key Largo to Costa Rica.

  • What are the cheapest flights from Key Largo to Costa Rica?

    While on average a flight from Key Largo to Costa Rica is generally $690, our data shows the cheapest flight currently is $120. When looking at the most popular route, (Miami - San José Juan Santamaria Intl), you can expect to pay $208 for that flight.

  • Can I find deals for flights from Key Largo to Costa Rica that include hotel bookings?

    Yes. In addition to deals on Key Largo to Costa Rica flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Key Largo to Costa Rica?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key Largo to Costa Rica.

  • Can I find deals for business class flights from Key Largo to Costa Rica?

    Yes. Cheapflights offers flight deals from Key Largo to Costa Rica by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Key Largo to Costa Rica?

    Currently, September is the cheapest month in which you can book a flight from Key Largo to Costa Rica (average of $398). Flying from Key Largo to Costa Rica in March is currently the most expensive (average of $555). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Key Largo to Costa Rica

See prices for flight routes from nearby airports that may be better suited for you.

Top 8 airlines flying from Key Largo to Costa Rica

Discover the top 8 airlines that operate flights from Key Largo to Costa Rica. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated mars 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$153Average$261FlexibilityNo cancel feeOn-time65%
Copa AirlinesCheapest$161Average$339FlexibilityNo cancel feeOn-time70%
JetBlueCheapest$199Average$366FlexibilityNo cancel feeOn-time62%
AviancaCheapest$211Average$280FlexibilityNo cancel feeOn-time71%
Volaris El SalvadorCheapest$234Average$249FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$282Average$673FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$443Average$619FlexibilityNo cancel feeOn-time69%
DeltaCheapest$486Average$657FlexibilityNo cancel feeOn-timeN/A
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