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Saint Martin Island

$455+ Cheap flights from St. Louis (STL) to Saint Martin Island

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SXM
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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Cheap flight deals from St. Louis to Saint Martin Island

Keep the following information in mind while searching for St. Louis to Saint Martin Island flight deals. Data was last updated October 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$454
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$670
Provider with most accurate pricing for Lambert-St Louis-Simpson Bay Princess Juliana flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Simpson Bay Princess Juliana flights.
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From Lambert-St Louis to Saint Martin Island
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Highest demand for flights based on searches. 11% potential increase in price ($88 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($31 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 St. Louis to Saint Martin Island

Cheapest flights from St. Louis to Saint Martin Island
Explore the most affordable flight options available from St. Louis to Saint Martin Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.

This Air Canada deal was found by Cheapflights users on 10/21. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/54:05 pmSTL - SXM
1 stop21h 55mAir Canada
Fri 12/125:00 pmSXM - STL
1 stop24h 29mAir Canada
Deal found 10/21$498
This Mytrip deal was found by Cheapflights users on 10/21. 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 12/59:50 amSTL - SXM
3 stops26h 20mMultiple Airlines
Fri 12/125:00 pmSXM - STL
1 stop24h 29mMultiple Airlines
Deal found 10/21$583
This American Airlines deal was found by Cheapflights users on 10/20. 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.
Mon 12/295:05 amSTL - SXM
1 stop7h 21mAmerican Airlines
Tue 1/65:33 pmSXM - STL
1 stop17h 35mAmerican Airlines
Deal found 10/20$613
This American Airlines deal was found by Cheapflights users on 10/21. 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 11/96:45 pmSTL - SXM
1 stop17h 05mAmerican Airlines
Wed 11/192:51 pmSXM - STL
1 stop10h 16mAmerican Airlines
Deal found 10/21$697
This Gotogate deal was found by Cheapflights users on 10/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/64:05 pmSTL - SXM
1 stop21h 55mAir Canada
Fri 11/145:00 pmSXM - STL
1 stop24h 29mAir Canada
Deal found 10/21$844
This American Airlines deal was found by Cheapflights users on 10/21. 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.
Thu 11/66:45 pmSTL - SXM
2 stops17h 34mAmerican Airlines
Fri 11/143:20 pmSXM - STL
2 stops18h 48mAmerican Airlines
Deal found 10/21$845
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Fri 12/55:27 pmSTL - SXM
3 stops18h 23mUnited Airlines
Fri 12/122:52 pmSXM - STL
2 stops23h 23mUnited Airlines
Deal found 10/21$862
This American Airlines deal was found by Cheapflights users on 10/22. 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.
Sat 12/278:01 pmSTL - SXM
2 stops18h 32mAmerican Airlines
Mon 1/55:33 pmSXM - STL
1 stop17h 35mAmerican Airlines
Deal found 10/22$863

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Saint Martin Island 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 22, 2025.
Use the filters below to find and compare flights from St. Louis to Saint Martin Island that are best for you.

Fly from

St. Louis

Fly to

Saint Martin Island

Route

Depart

Return

Price

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Sun 1/4

4:05 pm-4:00 pm

1 stop21h 55m

Simpson Bay Princess Juliana

Sat 1/10

4:28 pm-11:01 am

1 stop20h 33m

$455

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Sun 1/18

5:06 pm-3:10 pm

2 stops20h 04m

Simpson Bay Princess Juliana

Fri 1/23

4:28 pm-1:53 pm

1 stop23h 25m

$469

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Tue 1/13

4:05 pm-4:00 pm

1 stop21h 55m

Simpson Bay Princess Juliana

Fri 1/23

4:28 pm-1:53 pm

1 stop23h 25m

$475

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Fri 12/5

4:05 pm-2:40 pm

2 stops20h 35m

Simpson Bay Princess Juliana

Fri 12/12

5:00 pm-3:29 pm

1 stop24h 29m

$498

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Sun 1/4

4:05 pm-2:40 pm

2 stops44h 35m

Simpson Bay Princess Juliana

Sun 1/11

3:40 pm-3:29 pm

2 stops49h 49m

$546

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Best time to book a flight from St. Louis to Saint Martin Island

Have a flexible travel schedule? Discover the best time to fly to Saint Martin Island from St. Louis 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 St. Louis to Saint Martin Island

What is the cheapest month to book a flight from St. Louis to Saint Martin Island?

Currently, September is the cheapest month in which you can book a flight from St. Louis to Saint Martin Island (average of $497). Flying from St. Louis to Saint Martin Island in December is currently the most expensive (average of $683). 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.

Reviews of airlines servicing Saint Martin Island

Get insights into the airlines that provide service to Saint Martin Island. 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 Saint Martin Island. Reviews last updated October 22, 2025.
Read reviews from past customers who have flown Delta and American Airlines from St. Louis to Saint Martin Island. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,981 reviews

Overall

7.9

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,981 reviews
Delta
7.9
Good
7,981 reviews

Overall

7.9

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,028 reviews
Delta
7.9
Good
7,981 reviews

Overall

7.9

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Saint Martin Island. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Saint Martin Island?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Saint Martin Island. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • Can I find deals for flights from St. Louis to Saint Martin Island that include hotel bookings?

    Yes. In addition to deals on St. Louis to Saint Martin Island flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Saint Martin Island?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Saint Martin Island.

  • Can I find deals for business class flights from St. Louis to Saint Martin Island?

    Yes. Cheapflights offers flight deals from St. Louis to Saint Martin Island 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 St. Louis to Saint Martin Island?

    Currently, September is the cheapest month in which you can book a flight from St. Louis to Saint Martin Island (average of $497). Flying from St. Louis to Saint Martin Island in December is currently the most expensive (average of $683). 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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See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from St. Louis to Saint Martin Island

Discover the top 2 airlines that operate flights from St. Louis to Saint Martin Island. 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 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$497Average$672FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$560Average$738FlexibilityNo cancel feeOn-time71%

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