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St. Maarten

$96+ Cheap flights from Key Largo, FL to St. Maarten

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 12/30. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SXM
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from Key Largo to St. Maarten

Keep the following information in mind while searching for Key Largo to St. Maarten flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$294
(American Airlines)

One-way from

$97
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$462
Provider with most accurate pricing for Miami-Simpson Bay Princess Juliana flight deals.
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Provider most trusted by Cheapflights users for Miami-Simpson Bay Princess Juliana flights.
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From Key Largo to St. Maarten
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One-way flight from Key Largo to St. Maarten
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Highest demand for flights based on searches. 11% potential increase in price ($60 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Key Largo to St. Maarten

Cheapest flights from Key Largo to St. Maarten
Explore the most affordable flight options available from Key Largo to St. Maarten. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Delta deal was found by Cheapflights users on 10/29. 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 11/187:00 amMIA - SXM
1 stop6h 55mDelta
Wed 11/264:20 pmSXM - MIA
1 stop9h 26mDelta
Deal found 10/29$297
This Delta deal was found by Cheapflights users on 10/30. 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.
Mon 11/177:00 amMIA - SXM
1 stop6h 55mDelta
Sat 11/224:30 pmSXM - MIA
2 stops28h 27mDelta
Deal found 10/30$302
This American Airlines deal was found by Cheapflights users on 10/30. 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 11/912:15 pmMIA - SXM
Nonstop3h 07mAmerican Airlines
Wed 11/195:24 pmSXM - MIA
Nonstop3h 31mAmerican Airlines
Deal found 10/30$307
This American Airlines deal was found by Cheapflights users on 10/30. 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.
Fri 12/512:13 pmMIA - SXM
Nonstop3h 12mAmerican Airlines
Wed 12/105:25 pmSXM - MIA
Nonstop3h 35mAmerican Airlines
Deal found 10/30$318
This American Airlines deal was found by Cheapflights users on 10/29. 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 11/97:01 amMIA - SXM
1 stop29h 49mAmerican Airlines
Thu 11/135:24 pmSXM - MIA
Nonstop3h 31mAmerican Airlines
Deal found 10/29$324
This Delta deal was found by Cheapflights users on 10/30. 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 11/116:00 amMIA - SXM
1 stop7h 55mDelta
Mon 11/244:20 pmSXM - MIA
1 stop9h 26mDelta
Deal found 10/30$331
This Mytrip deal was found by Cheapflights users on 10/30. 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.
Wed 11/121:09 pmMIA - SXM
1 stop5h 43mMultiple Airlines
Fri 11/143:20 pmSXM - MIA
2 stops19h 38mMultiple Airlines
Deal found 10/30$334
This American Airlines deal was found by Cheapflights users on 10/28. 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 11/1610:11 amMIA - SXM
Nonstop3h 08mAmerican Airlines
Wed 11/265:24 pmSXM - MIA
Nonstop3h 31mAmerican Airlines
Deal found 10/28$335
This Mytrip deal was found by Cheapflights users on 10/29. 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 11/147:39 pmMIA - SXM
2 stops17h 36mSpirit Airlines
Mon 11/173:20 pmSXM - MIA
3 stops28h 24mSpirit Airlines
Deal found 10/29$336

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to St. Maarten 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 October 30, 2025.
Use the filters below to find and compare flights from Key Largo to St. Maarten that are best for you.

Fly from

Key Largo

Fly to

St. Maarten

Route

Depart

Return

Price

MiamiSimpson Bay

MIA - SXM

MIASXM

Miami

Mon 1/26

6:00 am-2:55 pm

1 stop7h 55m

Simpson Bay Princess Juliana

Thu 1/29

1:55 pm-10:48 pm

1 stop9h 53m

$297

MiamiSimpson Bay

MIA - SXM

MIASXM

Miami

Sat 1/10

8:29 pm-1:45 pm

1 stop16h 16m

Simpson Bay Princess Juliana

Sun 1/18

5:33 pm-8:04 pm

Nonstop3h 31m

$316

MiamiSimpson Bay

MIA - SXM

MIASXM

Miami

Sun 1/25

7:59 pm-12:30 pm

1 stop15h 31m

Simpson Bay Princess Juliana

Wed 1/28

1:55 pm-12:51 am

1 stop11h 56m

$350

MiamiSimpson Bay

MIA - SXM

MIASXM

Miami

Thu 11/27

6:00 am-2:55 pm

1 stop7h 55m

Simpson Bay Princess Juliana

Thu 12/4

3:53 pm-12:46 am

1 stop9h 53m

$350

MiamiSimpson Bay

MIA - SXM

MIASXM

Miami

Wed 11/12

7:00 am-2:55 pm

1 stop6h 55m

Simpson Bay Princess Juliana

Fri 11/14

4:20 pm-12:46 am

1 stop9h 26m

$378

MiamiSimpson Bay

MIA - SXM

MIASXM

Miami

Wed 11/26

6:00 am-2:55 pm

1 stop7h 55m

Simpson Bay Princess Juliana

Wed 12/3

3:53 pm-12:46 am

1 stop9h 53m

$403

MiamiSimpson Bay

MIA - SXM

MIASXM

Miami

Thu 11/27

6:00 am-2:55 pm

1 stop7h 55m

Simpson Bay Princess Juliana

Wed 12/3

3:53 pm-12:46 am

1 stop9h 53m

$403

MiamiSimpson Bay

MIA - SXM

MIASXM

Miami

Sun 11/16

7:00 am-2:55 pm

1 stop6h 55m

Simpson Bay Princess Juliana

Mon 11/24

4:20 pm-12:46 am

1 stop9h 26m

$405

MiamiSimpson Bay

MIA - SXM

MIASXM

Miami

Sun 12/14

12:13 pm-4:25 pm

Nonstop3h 12m

Simpson Bay Princess Juliana

Sun 12/21

5:33 pm-8:10 pm

Nonstop3h 37m

$417

MiamiSimpson Bay

MIA - SXM

MIASXM

Miami

Fri 11/7

6:00 am-2:49 pm

1 stop7h 49m

Simpson Bay Princess Juliana

Wed 11/12

4:20 pm-12:46 am

1 stop9h 26m

$437

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 21 results
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Best time to book a flight from Key Largo to St. Maarten

Have a flexible travel schedule? Discover the best time to fly to St. Maarten 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 St. Maarten

What is the cheapest month to book a flight from Key Largo to St. Maarten?

Currently, October is the cheapest month in which you can book a flight from Key Largo to St. Maarten (average of $174). Flying from Key Largo to St. Maarten in January is currently the most expensive (average of $265). 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 SX?

Find hourly flight availability from Key Largo to St. Maarten. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

One of the essential ways to save on airfare from Key Largo to St. Maarten is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 37% on airfare.

Reviews of airlines servicing St. Maarten

Get insights into the airlines that provide service to St. Maarten. 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 St. Maarten. Reviews last updated October 30, 2025.
Get a feel of what it's like to fly with American Airlines, Spirit Airlines, and Frontier from Key Largo to St. Maarten by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,030 reviews

Food

6.4

Boarding

7.5

Comfort

7.2

Overall

7.2

Entertainment

6.9

Crew

8.0

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
11,030 reviews
American Airlines
7.2
Good
11,030 reviews

Food

6.4

Boarding

7.5

Comfort

7.2

Overall

7.2

Entertainment

6.9

Crew

8.0

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.
Spirit Airlines
6.3
Okay
8,115 reviews
American Airlines
7.2
Good
11,030 reviews

Food

6.4

Boarding

7.5

Comfort

7.2

Overall

7.2

Entertainment

6.9

Crew

8.0

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
3,123 reviews
American Airlines
7.2
Good
11,030 reviews

Food

6.4

Boarding

7.5

Comfort

7.2

Overall

7.2

Entertainment

6.9

Crew

8.0

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 St. Maarten. 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 St. Maarten?

    For as low as $297, Delta can have you in St. Maarten from Key Largo in 7h 55m. The distance between Key Largo and St. Maarten is about 1222 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Key Largo to St. Maarten one-way?

    One-way options have recently been found by users for as low as $96 on American Airlines. Other airlines that offer cheap prices include Copa Airlines from $105 and Delta from $108 one-way.

  • What are the cheapest flights from Key Largo to St. Maarten?

    The cheapest flight price from Key Largo to St. Maarten is $139. On average you can expect to pay $360. The most popular route, (Miami - Simpson Bay Princess Juliana), can usually be booked for $278.

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

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

  • How can I find direct flights from Key Largo to St. Maarten?

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

  • Can I find deals for business class flights from Key Largo to St. Maarten?

    Yes. Cheapflights offers flight deals from Key Largo to St. Maarten 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 St. Maarten?

    Currently, October is the cheapest month in which you can book a flight from Key Largo to St. Maarten (average of $174). Flying from Key Largo to St. Maarten in January is currently the most expensive (average of $265). 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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Top 5 airlines flying from Key Largo to St. Maarten

Discover the top 5 airlines that operate flights from Key Largo to St. Maarten. 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$184Average$253FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$228Average$300FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$271Average$389FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$323Average$533FlexibilityNo cancel feeOn-time71%
DeltaCheapest$345Average$511FlexibilityNo cancel feeOn-timeN/A

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