$369+ 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 6/12. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SXM
May 12 — May 191
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Saint Martin Island with Cheapflights
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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
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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 St. Louis to Saint Martin Island
Cheapest
Best
Last-minute
Cheapest flights from St. Louis to Saint Martin IslandExplore 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 April 12, 2026.
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 April 12, 2026.
This Expedia deal was found by Cheapflights users on 4/8. 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.
Fri 6/122:15 pm
STL
- SXM
1 stop25h 45m
Air Canada
Thu 6/186:00 pm
SXM
- STL
1 stop19h 21m
Air Canada
Deal found 4/8![Air Canada logo]()
$369
This Southwest deal was found by Cheapflights users on 4/7. 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.
Sun 5/106:40 am
STL
- SXM
1 stop6h 45m
Southwest
Tue 5/122:25 pm
SXM
- STL
1 stop9h 10m
Southwest
Deal found 4/7![Southwest logo]()
$515
This Air Canada deal was found by Cheapflights users on 4/8. 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.
Sat 5/97:05 am
STL
- SXM
1 stop8h 55m
Air Canada
Sat 5/166:00 pm
SXM
- STL
1 stop19h 06m
Air Canada
Deal found 4/8![Air Canada logo]()
$520
This American Airlines deal was found by Cheapflights users on 4/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/176:54 pm
STL
- SXM
1 stop17h 27m
American Airlines
Thu 5/212:53 pm
SXM
- STL
1 stop9h 51m
American Airlines
Deal found 4/12![American Airlines logo]()
$529
This Southwest deal was found by Cheapflights users on 4/7. 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.
Fri 5/85:00 am
STL
- SXM
1 stop7h 30m
Southwest
Fri 5/152:25 pm
SXM
- STL
1 stop10h 15m
Southwest
Deal found 4/7![Southwest logo]()
$545
This Southwest deal was found by Cheapflights users on 4/7. 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.
Thu 5/77:45 pm
STL
- SXM
2 stops16h 45m
Southwest
Thu 5/142:25 pm
SXM
- STL
2 stops18h 20m
Southwest
Deal found 4/7![Southwest logo]()
$550
This American Airlines deal was found by Cheapflights users on 4/7. 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 5/88:03 pm
STL
- SXM
2 stops17h 23m
American Airlines
Fri 5/154:35 pm
SXM
- STL
2 stops17h 19m
American Airlines
Deal found 4/7![American Airlines logo]()
$559
This American Airlines deal was found by Cheapflights users on 4/10. 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 5/96:53 pm
STL
- SXM
1 stop17h 28m
American Airlines
Sat 5/163:32 pm
SXM
- STL
1 stop17h 58m
American Airlines
Deal found 4/10![American Airlines logo]()
$564
Best flights from St. Louis to Saint Martin IslandDiscover carefully curated flight deals from St. Louis to Saint Martin Island that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 12, 2026.
Discover carefully curated flight deals from St. Louis to Saint Martin Island that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 12, 2026.
This Southwest deal was found by Cheapflights users on 4/7. 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.
Sun 5/106:40 am
STL
- SXM
1 stop6h 45m
Southwest
Tue 5/122:25 pm
SXM
- STL
1 stop9h 10m
Southwest
Deal found 4/7![Southwest logo]()
$515
This Expedia deal was found by Cheapflights users on 4/7. 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.
Thu 5/77:05 am
STL
- SXM
1 stop8h 55m
Air Canada
Thu 5/146:00 pm
SXM
- STL
1 stop19h 06m
Air Canada
Deal found 4/7![Air Canada logo]()
$520
This Delta deal was found by Cheapflights users on 4/10. 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.
Sun 7/196:00 am
STL
- SXM
1 stop6h 53m
Delta
Wed 7/223:18 pm
SXM
- STL
1 stop9h 35m
Delta
Deal found 4/10![Delta logo]()
$625
This American Airlines deal was found by Cheapflights users on 4/11. 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 6/15:14 am
STL
- SXM
1 stop7h 36m
American Airlines
Mon 6/81:40 pm
SXM
- STL
1 stop11h 19m
American Airlines
Deal found 4/11![American Airlines logo]()
$645
This Southwest deal was found by Cheapflights users on 4/7. 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.
Fri 5/85:00 am
STL
- SXM
1 stop7h 30m
Southwest
Fri 5/152:25 pm
SXM
- STL
1 stop10h 15m
Southwest
Deal found 4/7![Southwest logo]()
$545
This Southwest deal was found by Cheapflights users on 4/7. 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.
Thu 5/77:45 pm
STL
- SXM
2 stops16h 45m
Southwest
Thu 5/142:25 pm
SXM
- STL
2 stops18h 20m
Southwest
Deal found 4/7![Southwest logo]()
$550
This American Airlines deal was found by Cheapflights users on 4/8. 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 7/186:12 pm
STL
- SXM
2 stops20h 34m
American Airlines
Sat 7/251:40 pm
SXM
- STL
2 stops19h 51m
American Airlines
Deal found 4/8![American Airlines logo]()
$650
This Southwest deal was found by Cheapflights users on 4/9. 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.
Sun 5/106:40 am
STL
- SXM
1 stop6h 45m
Southwest
Sun 5/173:20 pm
SXM
- STL
1 stop8h 55m
Southwest
Deal found 4/9![Southwest logo]()
$590
This American Airlines deal was found by Cheapflights users on 4/10. 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 6/265:00 pm
STL
- SXM
2 stops17h 14m
American Airlines
Fri 7/34:46 pm
SXM
- STL
2 stops20h 09m
American Airlines
Deal found 4/10![American Airlines logo]()
$650
This American Airlines deal was found by Cheapflights users on 4/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/295:10 am
STL
- SXM
2 stops9h 32m
American Airlines
Mon 8/32:51 pm
SXM
- STL
2 stops19h 01m
American Airlines
Deal found 4/12![American Airlines logo]()
$655
Last-minute flights from St. Louis to Saint Martin IslandDiscover last-minute flight deals from St. Louis to Saint Martin Island. Data last updated April 12, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Saint Martin Island. Data last updated April 12, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 4/8. 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 5/35:21 pm
STL
- SXM
2 stops18h 59m
American Airlines
Sun 5/102:21 pm
SXM
- STL
1 stop9h 03m
American Airlines
Deal found 4/8![American Airlines logo]()
$574
This Southwest deal was found by Cheapflights users on 4/7. 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.
Thu 5/77:45 pm
STL
- SXM
2 stops16h 45m
Southwest
Thu 5/142:25 pm
SXM
- STL
2 stops18h 20m
Southwest
Deal found 4/7![Southwest logo]()
$550
This Southwest deal was found by Cheapflights users on 4/7. 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.
Fri 5/85:00 am
STL
- SXM
1 stop7h 30m
Southwest
Fri 5/152:25 pm
SXM
- STL
1 stop10h 15m
Southwest
Deal found 4/7![Southwest logo]()
$545
This American Airlines deal was found by Cheapflights users on 4/7. 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 5/88:03 pm
STL
- SXM
2 stops17h 23m
American Airlines
Fri 5/154:35 pm
SXM
- STL
2 stops17h 19m
American Airlines
Deal found 4/7![American Airlines logo]()
$559
This Air Canada deal was found by Cheapflights users on 4/8. 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.
Sat 5/97:05 am
STL
- SXM
1 stop8h 55m
Air Canada
Sat 5/166:00 pm
SXM
- STL
1 stop19h 06m
Air Canada
Deal found 4/8![Air Canada logo]()
$520
This American Airlines deal was found by Cheapflights users on 4/10. 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 5/96:53 pm
STL
- SXM
1 stop17h 28m
American Airlines
Sat 5/163:32 pm
SXM
- STL
1 stop17h 58m
American Airlines
Deal found 4/10![American Airlines logo]()
$564
This Southwest deal was found by Cheapflights users on 4/7. 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.
Sun 5/106:40 am
STL
- SXM
1 stop6h 45m
Southwest
Tue 5/122:25 pm
SXM
- STL
1 stop9h 10m
Southwest
Deal found 4/7![Southwest logo]()
$515
This American Airlines deal was found by Cheapflights users on 4/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/176:54 pm
STL
- SXM
1 stop17h 27m
American Airlines
Thu 5/212:53 pm
SXM
- STL
1 stop9h 51m
American Airlines
Deal found 4/12![American Airlines logo]()
$529
Find 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 April 12, 2026.
Round-trip from | $369 (Expedia) |
|---|---|
Popular in | December |
Cheapest in | September |
Average price | $585 |
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 April 12, 2026.
Use the filters below to find and compare flights from St. Louis to Saint Martin Island that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisSimpson Bay
STL - SXM
STLSXM
Lambert-St Louis
Sun 5/10
6:40 am-2:25 pm
1 stop6h 45m
Simpson Bay Princess Juliana
Tue 5/12
2:25 pm-10:35 pm
1 stop9h 10m
$515
St. LouisSimpson Bay
STL - SXM
STLSXM
Lambert-St Louis
Thu 5/7
7:05 am-5:00 pm
1 stop8h 55m
Simpson Bay Princess Juliana
Thu 5/14
6:00 pm-12:06 pm
1 stop19h 06m
$520
St. LouisSimpson Bay
STL - SXM
STLSXM
Lambert-St Louis
Fri 5/8
5:00 am-1:30 pm
1 stop7h 30m
Simpson Bay Princess Juliana
Fri 5/15
2:25 pm-11:40 pm
1 stop10h 15m
$545
St. LouisSimpson Bay
STL - SXM
STLSXM
Lambert-St Louis
Thu 5/7
7:45 pm-1:30 pm
2 stops16h 45m
Simpson Bay Princess Juliana
Thu 5/14
2:25 pm-7:45 am
2 stops18h 20m
$550
Quickest round-trip
St. LouisSimpson Bay
STL - SXM
STLSXM
Lambert-St Louis
Sun 5/10
6:40 am-2:25 pm
1 stop6h 45m
Simpson Bay Princess Juliana
Sun 5/17
3:20 pm-11:15 pm
1 stop8h 55m
$590
St. LouisSimpson Bay
STL - SXM
STLSXM
Lambert-St Louis
Sun 7/19
6:00 am-1:53 pm
1 stop6h 53m
Simpson Bay Princess Juliana
Wed 7/22
3:18 pm-11:53 pm
1 stop9h 35m
$625
St. LouisSimpson Bay
STL - SXM
STLSXM
Lambert-St Louis
Mon 6/1
5:14 am-1:50 pm
1 stop7h 36m
Simpson Bay Princess Juliana
Mon 6/8
1:40 pm-11:59 pm
1 stop11h 19m
$645
St. LouisSimpson Bay
STL - SXM
STLSXM
Lambert-St Louis
Sat 7/18
6:12 pm-3:46 pm
2 stops20h 34m
Simpson Bay Princess Juliana
Sat 7/25
1:40 pm-8:31 am
2 stops19h 51m
$650
St. LouisSimpson Bay
STL - SXM
STLSXM
Lambert-St Louis
Fri 6/26
5:00 pm-11:14 am
2 stops17h 14m
Simpson Bay Princess Juliana
Fri 7/3
4:46 pm-11:55 am
2 stops20h 09m
$650
St. LouisSimpson Bay
STL - SXM
STLSXM
Lambert-St Louis
Wed 7/29
5:10 am-3:42 pm
2 stops9h 32m
Simpson Bay Princess Juliana
Mon 8/3
2:51 pm-8:52 am
2 stops19h 01m
$655
Sorted by cheapest first
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.
STL-SXM
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
STL-zzSCH
STL-SXM
What is the cheapest month to book a flight from St. Louis to Saint Martin Island?
Currently, January is the cheapest month in which you can book a flight from St. Louis to Saint Martin Island (average of $465). 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 April 12, 2026.
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.
Crew
8.5
Entertainment
7.8
Boarding
8.1
Comfort
7.9
Overall
7.9
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Entertainment
7.8
Boarding
8.1
Comfort
7.9
Overall
7.9
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Entertainment
7.8
Boarding
8.1
Comfort
7.9
Overall
7.9
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
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.
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Complete your trip
Complete your trip to Saint Martin Island by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from St. Louis to Saint Martin Island, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Saint Martin Island flights
Browse other St. Louis and Saint Martin Island flight options. Last updated on April 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 April 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$473 | Average$585 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$553 | Average$683 | FlexibilityNo cancel fee | On-time71% |