$92+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SJO
Mar 7 — Mar 141
1 adult, Economy
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Find cheap flights from Key Largo to Costa Rica with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Key Largo to Costa Rica
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Cheapest flights from Key Largo to Costa RicaExplore 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 February 5, 2026.
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 February 5, 2026.
This Mytrip deal was found by Cheapflights users on 2/2. 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.
Sat 2/141:33 pm
MIA
- SJO
Nonstop2h 53m
Multiple Airlines
Mon 2/237:58 am
SJO
- MIA
Nonstop2h 54m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$184
This Mytrip deal was found by Cheapflights users on 2/3. 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.
Sat 2/281:33 pm
MIA
- SJO
Nonstop2h 53m
Multiple Airlines
Fri 3/67:58 am
SJO
- MIA
Nonstop2h 54m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$185
This eDestinos deal was found by Cheapflights users on 2/1. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/271:24 pm
MIA
- SJO
Nonstop2h 53m
Volaris
Mon 3/27:58 am
SJO
- MIA
Nonstop2h 54m
Volaris
Deal found 2/1![Volaris logo]()
$191
This Mytrip deal was found by Cheapflights users on 2/1. 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.
Mon 3/21:24 pm
MIA
- SJO
Nonstop2h 53m
Multiple Airlines
Sat 3/78:07 am
SJO
- MIA
Nonstop2h 54m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$194
This CheapOair deal was found by Cheapflights users on 2/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/71:33 pm
MIA
- SJO
Nonstop2h 53m
Multiple Airlines
Fri 3/137:58 am
SJO
- MIA
Nonstop2h 54m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$195
This CheapOair deal was found by Cheapflights users on 2/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/161:24 pm
MIA
- SJO
Nonstop2h 53m
Multiple Airlines
Sat 2/218:07 am
SJO
- MIA
Nonstop2h 54m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$196
This Expedia deal was found by Cheapflights users on 2/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/211:33 pm
MIA
- SJO
Nonstop2h 53m
Multiple Airlines
Sat 2/282:30 pm
SJO
- MIA
1 stop9h 12m
Multiple Airlines
Deal found 2/5![Multiple Airlines logo]()
$197
This Mytrip deal was found by Cheapflights users on 2/3. 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.
Sat 2/211:33 pm
MIA
- SJO
Nonstop2h 53m
Multiple Airlines
Sun 3/87:58 am
SJO
- MIA
Nonstop2h 54m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$198
This Avianca deal was found by Cheapflights users on 2/4. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/51:25 pm
MIA
- SJO
Nonstop3h 05m
Avianca
Sun 3/87:45 am
SJO
- MIA
Nonstop3h 05m
Avianca
Deal found 2/4![Avianca logo]()
$202
This Avianca deal was found by Cheapflights users on 2/2. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/271:25 pm
MIA
- SJO
Nonstop3h 05m
Avianca
Mon 3/23:05 pm
SJO
- MIA
1 stop5h 10m
Avianca
Deal found 2/2![Avianca logo]()
$203
This Delta deal was found by Cheapflights users on 2/4. 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.
Wed 2/186:00 am
MIA
- LIR
1 stop7h 50m
Delta
Wed 2/253:30 pm
LIR
- MIA
1 stop8h 23m
Delta
Deal found 2/4![Delta logo]()
$450
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Tue 2/2412:00 pm
MIA
- LIR
Nonstop3h 13m
American Airlines
Sat 2/283:29 pm
LIR
- MIA
Nonstop3h 05m
American Airlines
Deal found 2/2![American Airlines logo]()
$466
Best flights from Key Largo to Costa RicaDiscover carefully curated flight deals from Key Largo to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 5, 2026.
Discover carefully curated flight deals from Key Largo to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 5, 2026.
This CheapOair deal was found by Cheapflights users on 2/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/71:33 pm
MIA
- SJO
Nonstop2h 53m
Multiple Airlines
Fri 3/137:58 am
SJO
- MIA
Nonstop2h 54m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$195
This Avianca deal was found by Cheapflights users on 2/4. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/21:45 pm
MIA
- SJO
2 stops11h 55m
Avianca
Tue 7/281:50 am
SJO
- MIA
1 stop8h 35m
Avianca
Deal found 2/4![Avianca logo]()
$198
This Avianca deal was found by Cheapflights users on 2/4. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/21:25 pm
MIA
- SJO
Nonstop3h 05m
Avianca
Fri 3/67:45 am
SJO
- MIA
Nonstop3h 05m
Avianca
Deal found 2/4![Avianca logo]()
$202
This Avianca deal was found by Cheapflights users on 2/3. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/271:25 pm
MIA
- SJO
Nonstop3h 05m
Avianca
Mon 3/27:45 am
SJO
- MIA
Nonstop3h 05m
Avianca
Deal found 2/3![Avianca logo]()
$202
This Delta deal was found by Cheapflights users on 2/3. 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.
Wed 2/187:15 am
MIA
- LIR
1 stop8h 00m
Delta
Wed 2/253:30 pm
LIR
- MIA
1 stop8h 23m
Delta
Deal found 2/3![Delta logo]()
$450
This American Airlines deal was found by Cheapflights users on 2/5. 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.
Wed 3/2510:03 am
MIA
- LIR
Nonstop3h 10m
American Airlines
Wed 4/112:30 pm
LIR
- MIA
Nonstop3h 01m
American Airlines
Deal found 2/5![American Airlines logo]()
$474
This Avianca deal was found by Cheapflights users on 2/4. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/512:45 pm
MIA
- SJO
2 stops7h 10m
Avianca
Sun 3/85:00 am
SJO
- MIA
1 stop5h 15m
Avianca
Deal found 2/4![Avianca logo]()
$205
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Sun 5/316:30 am
MIA
- LIR
1 stop7h 40m
United Airlines
Fri 6/511:10 am
LIR
- MIA
1 stop9h 30m
United Airlines
Deal found 2/1![United Airlines logo]()
$507
This American Airlines deal was found by Cheapflights users on 2/4. 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.
Wed 3/412:00 pm
MIA
- LIR
Nonstop3h 13m
American Airlines
Tue 3/102:13 pm
LIR
- MIA
Nonstop3h 05m
American Airlines
Deal found 2/4![American Airlines logo]()
$486
This Delta deal was found by Cheapflights users on 2/4. 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.
Wed 3/186:00 am
MIA
- LIR
1 stop8h 50m
Delta
Wed 3/252:05 pm
LIR
- MIA
1 stop8h 47m
Delta
Deal found 2/4![Delta logo]()
$488
This Delta deal was found by Cheapflights users on 2/2. 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.
Tue 3/37:15 am
MIA
- LIR
1 stop7h 35m
Delta
Tue 3/102:05 pm
LIR
- MIA
1 stop8h 47m
Delta
Deal found 2/2![Delta logo]()
$488
This American Airlines deal was found by Cheapflights users on 2/4. 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.
Sun 5/3112:09 pm
MIA
- LIR
Nonstop2h 59m
American Airlines
Fri 6/52:45 pm
LIR
- MIA
Nonstop3h 00m
American Airlines
Deal found 2/4![American Airlines logo]()
$493
This Delta deal was found by Cheapflights users on 2/5. 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.
Wed 3/257:05 am
MIA
- LIR
1 stop7h 45m
Delta
Wed 4/11:05 pm
LIR
- MIA
1 stop9h 47m
Delta
Deal found 2/5![Delta logo]()
$488
This Delta deal was found by Cheapflights users on 2/4. 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.
Wed 3/46:00 am
MIA
- LIR
1 stop7h 50m
Delta
Tue 3/101:05 pm
LIR
- MIA
1 stop9h 47m
Delta
Deal found 2/4![Delta logo]()
$488
This Delta deal was found by Cheapflights users on 2/3. 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.
Thu 2/197:26 pm
MIA
- LIR
1 stop18h 24m
Delta
Mon 2/233:30 pm
LIR
- MIA
1 stop8h 23m
Delta
Deal found 2/3![Delta logo]()
$502
Last-minute flights from Key Largo to Costa RicaDiscover last-minute flight deals from Key Largo to Costa Rica. Data last updated February 5, 2026 and is based on user searches.
Discover last-minute flight deals from Key Largo to Costa Rica. Data last updated February 5, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 2/2. 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.
Sat 2/141:33 pm
MIA
- SJO
Nonstop2h 53m
Multiple Airlines
Mon 2/237:58 am
SJO
- MIA
Nonstop2h 54m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$184
This CheapOair deal was found by Cheapflights users on 2/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/161:24 pm
MIA
- SJO
Nonstop2h 53m
Multiple Airlines
Sat 2/218:07 am
SJO
- MIA
Nonstop2h 54m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$196
This Delta deal was found by Cheapflights users on 2/4. 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.
Wed 2/186:00 am
MIA
- LIR
1 stop7h 50m
Delta
Wed 2/253:30 pm
LIR
- MIA
1 stop8h 23m
Delta
Deal found 2/4![Delta logo]()
$450
This Expedia deal was found by Cheapflights users on 2/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/211:33 pm
MIA
- SJO
Nonstop2h 53m
Multiple Airlines
Sat 2/282:30 pm
SJO
- MIA
1 stop9h 12m
Multiple Airlines
Deal found 2/5![Multiple Airlines logo]()
$197
This Mytrip deal was found by Cheapflights users on 2/3. 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.
Sat 2/211:33 pm
MIA
- SJO
Nonstop2h 53m
Multiple Airlines
Sun 3/87:58 am
SJO
- MIA
Nonstop2h 54m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$198
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Tue 2/2412:00 pm
MIA
- LIR
Nonstop3h 13m
American Airlines
Sat 2/283:29 pm
LIR
- MIA
Nonstop3h 05m
American Airlines
Deal found 2/2![American Airlines logo]()
$466
This eDestinos deal was found by Cheapflights users on 2/1. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/271:24 pm
MIA
- SJO
Nonstop2h 53m
Volaris
Mon 3/27:58 am
SJO
- MIA
Nonstop2h 54m
Volaris
Deal found 2/1![Volaris logo]()
$191
This Avianca deal was found by Cheapflights users on 2/2. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2712:45 pm
MIA
- SJO
2 stops7h 10m
Avianca
Mon 3/27:45 am
SJO
- MIA
Nonstop3h 05m
Avianca
Deal found 2/2![Avianca logo]()
$203
This Mytrip deal was found by Cheapflights users on 2/3. 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.
Sat 2/281:33 pm
MIA
- SJO
Nonstop2h 53m
Multiple Airlines
Fri 3/67:58 am
SJO
- MIA
Nonstop2h 54m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$185
This Mytrip deal was found by Cheapflights users on 2/1. 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.
Mon 3/21:24 pm
MIA
- SJO
Nonstop2h 53m
Multiple Airlines
Sat 3/78:07 am
SJO
- MIA
Nonstop2h 54m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$194
This Avianca deal was found by Cheapflights users on 2/4. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/51:25 pm
MIA
- SJO
Nonstop3h 05m
Avianca
Sun 3/87:45 am
SJO
- MIA
Nonstop3h 05m
Avianca
Deal found 2/4![Avianca logo]()
$202
This CheapOair deal was found by Cheapflights users on 2/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/71:33 pm
MIA
- SJO
Nonstop2h 53m
Multiple Airlines
Fri 3/137:58 am
SJO
- MIA
Nonstop2h 54m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$195
One-way flights from Key Largo to Costa RicaSearch for one-way flight options from Key Largo to Costa Rica. Find affordable one-way fares based on user searches. Data last updated February 5, 2026.
Search for one-way flight options from Key Largo to Costa Rica. Find affordable one-way fares based on user searches. Data last updated February 5, 2026.
This Super.com deal was found by Cheapflights users on 2/2. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/93:50 pm
MIA
- SJO
1 stop5h 00m
Avianca
Deal found 2/2![Avianca logo]()
$92
This Mytrip deal was found by Cheapflights users on 2/3. 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.
Fri 2/131:24 pm
MIA
- SJO
Nonstop2h 53m
Volaris El Salvador
Deal found 2/3![Volaris El Salvador logo]()
$94
This Mytrip deal was found by Cheapflights users on 2/4. 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.
Mon 2/161:24 pm
MIA
- SJO
Nonstop2h 53m
Volaris El Salvador
Deal found 2/4![Volaris El Salvador logo]()
$95
This Frontier deal was found by Cheapflights users on 2/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/285:05 am
MIA
- SJO
1 stop9h 10m
Frontier
Deal found 2/3![Frontier logo]()
$96
This Mytrip deal was found by Cheapflights users on 2/4. 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.
Sun 2/151:24 pm
MIA
- SJO
Nonstop2h 53m
Volaris El Salvador
Deal found 2/4![Volaris El Salvador logo]()
$97
This Avianca deal was found by Cheapflights users on 2/3. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/261:25 pm
MIA
- SJO
Nonstop3h 05m
Avianca
Deal found 2/3![Avianca logo]()
$98
This Avianca deal was found by Cheapflights users on 2/3. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/224:50 pm
MIA
- SJO
2 stops7h 50m
Avianca
Deal found 2/3![Avianca logo]()
$99
This FlightHub deal was found by Cheapflights users on 2/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/201:24 pm
MIA
- SJO
Nonstop2h 53m
Volaris El Salvador
Deal found 2/2![Volaris El Salvador logo]()
$101
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Thu 2/266:15 am
MIA
- SJO
1 stop15h 24m
United Airlines
Deal found 2/2![United Airlines logo]()
$103
This eDestinos deal was found by Cheapflights users on 2/3. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/221:24 pm
MIA
- SJO
Nonstop2h 53m
Volaris
Deal found 2/3![Volaris logo]()
$104
This Southwest deal was found by Cheapflights users on 2/4. 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.
Tue 4/146:15 am
MIA
- LIR
1 stop9h 00m
Southwest
Deal found 2/4![Southwest logo]()
$183
This American Airlines deal was found by Cheapflights users on 2/4. 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.
Sun 5/312:14 pm
MIA
- LIR
Nonstop2h 56m
American Airlines
Deal found 2/4![American Airlines logo]()
$224
Find 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 February 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $184 (Mytrip) |
One-way from | $92 (Super.com) |
Popular in | December |
Cheapest in | August |
Average price | $295 |
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 February 5, 2026.
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
Sat 3/7
1:33 pm-3:26 pm
Nonstop2h 53m
San José Juan Santamaria Intl
Fri 3/13
7:58 am-12:52 pm
Nonstop2h 54m
$195
MiamiSan José
MIA - SJO
MIASJO
Miami
Thu 7/2
1:45 pm-11:40 pm
2 stops11h 55m
San José Juan Santamaria Intl
Tue 7/28
1:50 am-12:25 pm
1 stop8h 35m
$198
MiamiSan José
MIA - SJO
MIASJO
Miami
Mon 3/2
1:25 pm-3:30 pm
Nonstop3h 05m
San José Juan Santamaria Intl
Fri 3/6
7:45 am-11:50 am
Nonstop3h 05m
$202
MiamiSan José
MIA - SJO
MIASJO
Miami
Fri 2/27
1:25 pm-3:30 pm
Nonstop3h 05m
San José Juan Santamaria Intl
Mon 3/2
7:45 am-11:50 am
Nonstop3h 05m
$202
MiamiSan José
MIA - SJO
MIASJO
Miami
Thu 3/5
12:45 pm-6:55 pm
2 stops7h 10m
San José Juan Santamaria Intl
Sun 3/8
5:00 am-12:15 pm
1 stop5h 15m
$205
MiamiLiberia
MIA - LIR
MIALIR
Miami
Wed 2/18
7:15 am-2:15 pm
1 stop8h 00m
Liberia
Wed 2/25
3:30 pm-12:53 am
1 stop8h 23m
$450
MiamiLiberia
MIA - LIR
MIALIR
Miami
Wed 3/25
10:03 am-11:13 am
Nonstop3h 10m
Liberia
Wed 4/1
12:30 pm-5:31 pm
Nonstop3h 01m
$474
MiamiLiberia
MIA - LIR
MIALIR
Miami
Wed 3/4
12:00 pm-2:13 pm
Nonstop3h 13m
Liberia
Tue 3/10
2:13 pm-7:18 pm
Nonstop3h 05m
$486
MiamiLiberia
MIA - LIR
MIALIR
Miami
Wed 3/18
6:00 am-12:50 pm
1 stop8h 50m
Liberia
Wed 3/25
2:05 pm-12:52 am
1 stop8h 47m
$488
MiamiLiberia
MIA - LIR
MIALIR
Miami
Tue 3/3
7:15 am-1:50 pm
1 stop7h 35m
Liberia
Tue 3/10
2:05 pm-12:52 am
1 stop8h 47m
$488
Showing 1-10 of 32 results
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.
MIA-SJO
MIA-LIR
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
KE9-CR0
MIA-SJO
MIA-LIR
What is the cheapest month to book a flight from Key Largo to Costa Rica?
Currently, January is the cheapest month in which you can book a flight from Key Largo to Costa Rica (average of $93). Flying from Key Largo to Costa Rica in June is currently the most expensive (average of $152). 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 February 5, 2026.
It’s typically best to fly out from Key Largo to Costa Rica at noon. Doing so could potentially save you 20% on the flight price compared to flying in the morning, which is usually more expensive.
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 January 31, 2026.
Travelers seeking maximum savings on their Key Largo to Costa Rica flight should consider departing on Tuesday evenings when fares are most often at their lowest. Saturday afternoons 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 February 5, 2026.
The most flights from KE9 to CR0 are scheduled on a Thursday (13 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (8 on average).
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 February 5, 2026.
Read reviews from past customers who have flown Copa Airlines, Volaris El Salvador, and American Airlines from Key Largo to Costa Rica. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
6.8
Comfort
7.4
Boarding
7.8
Crew
8.1
Entertainment
6.8
Overall
7.5
Reviews
1 / 20
2.0
MediocreMaria,Dec 2025
PTY - SLA
Food
6.8
Comfort
7.4
Boarding
7.8
Crew
8.1
Entertainment
6.8
Overall
7.5
Reviews
1 / 20
2.0
MediocreMaria,Dec 2025
PTY - SLA
Volaris El Salvador
Food
6.8
Comfort
7.4
Boarding
7.8
Crew
8.1
Entertainment
6.8
Overall
7.5
Reviews
1 / 20
2.0
MediocreMaria,Dec 2025
PTY - SLA
Food
6.8
Comfort
7.4
Boarding
7.8
Crew
8.1
Entertainment
6.8
Overall
7.5
Reviews
1 / 20
2.0
MediocreMaria,Dec 2025
PTY - SLA
Food
6.8
Comfort
7.4
Boarding
7.8
Crew
8.1
Entertainment
6.8
Overall
7.5
Reviews
1 / 20
2.0
MediocreMaria,Dec 2025
PTY - SLA
Food
6.8
Comfort
7.4
Boarding
7.8
Crew
8.1
Entertainment
6.8
Overall
7.5
Reviews
1 / 20
2.0
MediocreMaria,Dec 2025
PTY - SLA
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.
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Alternative routes for Key Largo to Costa Rica
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Complete your trip
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Key Largo and Costa Rica flights
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Popular flight searches
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Key Largo to Costa Rica flights
Consider these flights traveling from Key Largo to Costa Rica.
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 February 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$94 | Average$248 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$105 | Average$273 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$108 | Average$234 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$124 | Average$159 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$144 | Average$340 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$192 | Average$234 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$225 | Average$521 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$352 | Average$584 | FlexibilityNo cancel fee | On-timeN/A |