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$64+ Cheap flights from Key Largo, FL to Caribbean

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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SJU
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap flight deals from Key Largo to Caribbean

Cheapest flights from Key Largo to Caribbean
Explore the most affordable flight options available from Key Largo to Caribbean. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This Trip.com deal was found by Cheapflights users on 12/15. 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.
Sun 12/285:05 amMIA - SJU
Nonstop2h 34mFrontier
Sat 1/108:15 amSJU - MIA
Nonstop2h 59mFrontier
Deal found 12/15$141
This Super.com deal was found by Cheapflights users on 12/15. 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.
Sun 12/2811:05 pmMIA - SJU
Nonstop2h 34mFrontier
Fri 1/910:47 pmSJU - MIA
Nonstop3h 02mFrontier
Deal found 12/15$146
This Kiwi.com deal was found by Cheapflights users on 12/13. 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.
Mon 12/154:10 pmMIA - SJU
Nonstop2h 40mMultiple Airlines
Sun 12/219:49 amSJU - MIA
Nonstop3h 00mMultiple Airlines
Deal found 12/13$147
This Cheapflightsfares deal was found by Cheapflights users on 12/14. 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.
Thu 12/253:38 pmMIA - SJU
Nonstop2h 35mSpirit Airlines
Fri 1/1611:52 amSJU - MIA
Nonstop2h 58mSpirit Airlines
Deal found 12/14$148
This Priceline deal was found by Cheapflights users on 12/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/144:10 pmMIA - SJU
Nonstop2h 40mSpirit Airlines
Wed 12/177:07 pmSJU - MIA
Nonstop2h 56mSpirit Airlines
Deal found 12/13$149
This CheapOair deal was found by Cheapflights users on 12/15. 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.
Thu 12/183:38 pmMIA - SJU
Nonstop2h 35mSpirit Airlines
Mon 12/2212:53 pmSJU - MIA
Nonstop2h 50mSpirit Airlines
Deal found 12/15$150
This Frontier deal was found by Cheapflights users on 12/14. 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 12/2711:05 pmMIA - SJU
Nonstop2h 34mFrontier
Fri 1/166:00 amSJU - MIA
Nonstop2h 57mFrontier
Deal found 12/14$151
This Kiwi.com deal was found by Cheapflights users on 12/13. 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.
Sat 12/273:38 pmMIA - SJU
Nonstop2h 35mMultiple Airlines
Tue 12/303:54 amSJU - MIA
Nonstop3h 06mMultiple Airlines
Deal found 12/13$154
This Frontier deal was found by Cheapflights users on 12/13. 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.
Wed 12/3111:05 pmMIA - SJU
Nonstop2h 34mFrontier
Thu 1/811:52 amSJU - MIA
1 stop10h 22mFrontier
Deal found 12/13$155
This eDestinos deal was found by Cheapflights users on 12/14. 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 12/2811:05 pmMIA - SJU
Nonstop2h 34mFrontier
Thu 1/1511:55 amSJU - MIA
1 stop12h 32mFrontier
Deal found 12/14$157
This Kiwi.com deal was found by Cheapflights users on 12/13. 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.
Sat 12/273:38 pmMIA - SJU
Nonstop2h 35mSpirit Airlines
Thu 1/811:52 amSJU - MIA
Nonstop2h 58mSpirit Airlines
Deal found 12/13$158
This CheapOair deal was found by Cheapflights users on 12/12. 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 12/135:05 amMIA - SJU
1 stop17h 20mSpirit Airlines
Sat 12/2012:53 pmSJU - MIA
Nonstop2h 50mSpirit Airlines
Deal found 12/12$160

Find flight deals from Key Largo to Caribbean

Keep the following information in mind while searching for Key Largo to Caribbean flight deals. Data was last updated December 15, 2025.

Round-trip from

$137
(Frontier)

One-way from

$64
(Super.com)

Popular in

December

Cheapest in

February

Average price

$317
From Key Largo to Caribbean
Search Deals
One-way flight from Key Largo to Caribbean
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($21 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to Caribbean 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 December 15, 2025.
Use the filters below to find and compare flights from Key Largo to Caribbean that are best for you.

Fly from

Key Largo

Fly to

Caribbean

Route

Depart

Return

Price

MiamiSan Juan

MIA - SJU

MIASJU

Miami

Wed 3/4

3:26 pm-6:58 pm

Nonstop2h 32m

San Juan Luis Munoz Marin Intl

Sat 3/7

11:52 am-1:50 pm

Nonstop2h 58m

$168

MiamiSan Juan

MIA - SJU

MIASJU

Miami

Fri 1/9

9:59 pm-8:54 am

2 stops33h 55m

San Juan Luis Munoz Marin Intl

Mon 1/12

5:45 am-7:51 am

Nonstop3h 06m

$172

MiamiSan Juan

MIA - SJU

MIASJU

Miami

Thu 1/29

5:20 pm-12:35 am

1 stop6h 15m

San Juan Luis Munoz Marin Intl

Thu 2/5

5:35 am-11:50 am

1 stop7h 15m

$209

MiamiSan Juan

MIA - SJU

MIASJU

Miami

Thu 1/22

5:20 pm-12:35 am

1 stop6h 15m

San Juan Luis Munoz Marin Intl

Sat 1/31

5:30 am-2:50 pm

2 stops10h 20m

$215

MiamiSan Juan

MIA - SJU

MIASJU

Miami

Mon 1/26

5:20 pm-12:35 am

1 stop6h 15m

San Juan Luis Munoz Marin Intl

Sat 1/31

5:30 am-2:50 pm

2 stops10h 20m

$232

MiamiPunta Cana

MIA - PUJ

MIAPUJ

Miami

Tue 2/3

1:57 pm-5:33 pm

Nonstop2h 36m

Punta Cana

Tue 2/10

11:10 am-4:55 pm

1 stop6h 45m

$244

MiamiPunta Cana

MIA - PUJ

MIAPUJ

Miami

Fri 2/6

4:18 pm-7:54 pm

Nonstop2h 36m

Punta Cana

Thu 2/12

2:05 am-11:39 am

1 stop10h 34m

$244

MiamiSanto Domingo

MIA - SDQ

MIASDQ

Miami

Fri 1/23

4:18 pm-1:50 am

1 stop8h 32m

Santo Domingo Las Americas

Sun 2/8

5:10 pm-6:30 pm

Nonstop2h 20m

$244

MiamiSanto Domingo

MIA - SDQ

MIASDQ

Miami

Fri 1/30

4:18 pm-1:50 am

1 stop8h 32m

Santo Domingo Las Americas

Mon 2/2

10:19 am-11:39 am

Nonstop2h 20m

$244

MiamiSanto Domingo

MIA - SDQ

MIASDQ

Miami

Mon 2/2

5:53 pm-2:25 am

1 stop7h 32m

Santo Domingo Las Americas

Mon 2/9

10:19 am-11:39 am

Nonstop2h 20m

$244

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 60 results
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Best time to book a flight from Key Largo to Caribbean

Have a flexible travel schedule? Discover the best time to fly to Caribbean 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 Caribbean

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

Currently, February is the cheapest month in which you can book a flight from Key Largo to Caribbean (average of $60). Flying from Key Largo to Caribbean in September is currently the most expensive (average of $109). 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 CB?

Find hourly flight availability from Key Largo to Caribbean. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

It’s optimal to fly from Key Largo to Caribbean in the morning. By choosing this option you can save up to 9% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from Key Largo to Caribbean?

Use this chart to determine the cheapest time to fly round-trip from Key Largo to Caribbean. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Key Largo to Caribbean flight should consider departing on Tuesday evenings 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.

Reviews of airlines servicing Caribbean

Get insights into the airlines that provide service to Caribbean. 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 Caribbean. Reviews last updated December 15, 2025.
Read through reviews of airlines operating flights from Key Largo to Caribbean, such as American Airlines, Frontier, and Bahamasair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,050 reviews

Entertainment

6.9

Food

6.5

Crew

8.0

Overall

7.2

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.
American Airlines
7.2
Good
11,050 reviews
American Airlines
7.2
Good
11,050 reviews

Entertainment

6.9

Food

6.5

Crew

8.0

Overall

7.2

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.
Frontier
5.8
Fair
3,082 reviews
American Airlines
7.2
Good
11,050 reviews

Entertainment

6.9

Food

6.5

Crew

8.0

Overall

7.2

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.
Bahamasair
5.7
Fair
65 reviews
American Airlines
7.2
Good
11,050 reviews

Entertainment

6.9

Food

6.5

Crew

8.0

Overall

7.2

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.

Related info for your journey

Find useful and relevant information for your journey from Key Largo to Caribbean. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Key Largo to Caribbean?

    Spirit Airlines, Frontier, and Southwest can get you from Key Largo to Caribbean in just under 2h 32m. Your travel time can differ by up to 31h 23m. Airlines will cover a distance of 1044 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $40. Users have also found prices from $45 and $67 on Frontier and Arajet, respectively.

  • What are the most popular routes from Key Largo to Caribbean?

    When deciding which route to take from Key Largo to Caribbean consider Miami - San Juan Luis Munoz Marin Intl, Miami - Punta Cana or Miami - Santo Domingo Las Americas as they are the most popular.

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

    The top 3 most reliable airlines when flying from Key Largo to Caribbean are Royal Air Maroc (100%), British Airways (85%) and Iberia (77%).

  • What are the cheapest flights from Key Largo to Caribbean?

    Looking at all options, your cheapest flight can be booked for $62. While the most popular route (Miami - San Juan Luis Munoz Marin Intl) can be booked for $113 on average, our data indicates $458 when flying from Key Largo to Caribbean.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Key Largo to Caribbean 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 Caribbean?

    Currently, February is the cheapest month in which you can book a flight from Key Largo to Caribbean (average of $60). Flying from Key Largo to Caribbean in September is currently the most expensive (average of $109). 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

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Alternative routes for Key Largo to Caribbean

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Key Largo to Caribbean

Discover the top 10 airlines that operate flights from Key Largo to Caribbean. 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$65Average$265FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$74Average$263FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$93Average$358FlexibilityNo cancel feeOn-time62%
Western AirCheapest$98Average$302FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$108Average$525FlexibilityNo cancel feeOn-timeN/A
Copa AirlinesCheapest$140Average$354FlexibilityNo cancel feeOn-time70%
ArajetCheapest$151Average$273FlexibilityNo cancel feeOn-timeN/A
Caribbean AirlinesCheapest$165Average$412FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$180Average$405FlexibilityNo cancel feeOn-time63%
Sky HighCheapest$189Average$362FlexibilityNo cancel feeOn-timeN/A

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