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Simpson Bay

$208+ Cheap flights from St. Louis (STL) to Simpson Bay (SXM)

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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SXM
ago. 3 — ago. 101
dom. 8/3
dom. 8/10
1 adult, Economy
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Cheap flight deals from St. Louis to Simpson Bay

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Simpson Bay (SXM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated julio 29, 2025.

Round-trip from

$388
(Kiwi.com)

One-way from

$208
(American Airlines)

Popular in

December

Cheapest in

August

Average price

$623
From Lambert-St Louis to Simpson Bay Princess Juliana
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One-way flight from Lambert-St Louis to Simpson Bay Princess Juliana
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Highest demand for flights based on searches. 13% potential increase in price ($112 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($41 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from St. Louis to Simpson Bay

Cheapest flights from St. Louis to Simpson Bay
Explore the most affordable flight options available from St. Louis to Simpson Bay. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 29, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
mar. 8/125:26 pmSTL - SXM
1 stop19h 34mSpirit Airlines
mié. 8/203:05 pmSXM - STL
1 stop19h 35mSpirit Airlines
Deal found 7/27$388
This Delta deal was found by Cheapflights users on 7/27. 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.
sáb. 8/236:00 amSTL - SXM
1 stop6h 56mDelta
mié. 8/273:10 pmSXM - STL
1 stop7h 52mDelta
Deal found 7/27$497
This American Airlines deal was found by Cheapflights users on 7/29. 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.
sáb. 10/114:25 pmSTL - SXM
2 stops21h 50mAmerican Airlines
sáb. 10/184:24 pmSXM - STL
2 stops16h 49mAmerican Airlines
Deal found 7/29$502
This Mytrip deal was found by Cheapflights users on 7/27. 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.
sáb. 8/231:30 pmSTL - SXM
2 stops22h 45mMultiple Airlines
mié. 8/273:05 pmSXM - STL
3 stops23h 27mMultiple Airlines
Deal found 7/27$820
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/2711:05 amSTL - SXM
2 stops24h 45mUnited Airlines
lun. 1/54:55 pmSXM - STL
2 stops19h 32mUnited Airlines
Deal found 7/28$1,517

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Simpson Bay 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 julio 29, 2025.
Use the filters below to find and compare flights from St. Louis to Simpson Bay that are best for you.

Fly from

St. Louis

Fly to

Simpson Bay

Route

Depart

Return

Price

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

mar. 8/12

5:26 pm-2:00 pm

1 stop19h 34m

Simpson Bay Princess Juliana

mié. 8/20

3:05 pm-9:40 am

1 stop19h 35m

$388

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

sáb. 8/23

6:00 am-1:56 pm

1 stop6h 56m

Simpson Bay Princess Juliana

mié. 8/27

3:10 pm-10:02 pm

1 stop7h 52m

$497

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

sáb. 10/11

4:25 pm-3:15 pm

2 stops21h 50m

Simpson Bay Princess Juliana

sáb. 10/18

4:24 pm-8:13 am

2 stops16h 49m

$502

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

dom. 1/18

5:15 pm-3:10 pm

3 stops19h 55m

Simpson Bay Princess Juliana

jue. 1/22

3:40 pm-3:29 pm

2 stops25h 49m

$748

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

vie. 8/29

4:54 pm-12:20 pm

1 stop18h 26m

$208

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

vie. 8/29

2:30 pm-2:00 pm

3 stops22h 30m

$231

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

vie. 8/29

3:16 pm-2:00 pm

2 stops21h 44m

$244

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Best time to book a flight from St. Louis to Simpson Bay

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

How far ahead should I book a flight from St. Louis to Simpson Bay?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Simpson Bay. Price data was last updated on July 25, 2025.

The best time to book flights from St. Louis to Simpson Bay is 31 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from St. Louis to Simpson Bay?

Currently, September is the cheapest month in which you can book a flight from St. Louis to Simpson Bay (average of $459). Flying from St. Louis to Simpson Bay in March is currently the most expensive (average of $655). 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 STL to SXM?

Find hourly flight availability from St. Louis to Simpson Bay. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 29, 2025.

It’s typically best to fly out from St. Louis to Simpson Bay in the afternoon. Doing so could potentially save you 13% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing Simpson Bay

Get insights into the airlines that provide service to Simpson Bay. 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 Simpson Bay. Reviews last updated julio 29, 2025.
Read reviews from past customers who have flown Delta, American Airlines, and Spirit Airlines from St. Louis to Simpson Bay. 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.
Delta
8.0
Very good
7,979 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,979 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Spirit Airlines
6.3
Okay
8,044 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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

  • What are the cheapest airlines flying from St. Louis to Simpson Bay round-trip?

    Flying on Spirit Airlines is currently your cheapest option to Simpson Bay, with prices starting at $388. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $497 and $502, respectively. Spirit Airlines is 46% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from St. Louis to Simpson Bay that include hotel bookings?

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

  • How can I find direct flights from St. Louis to Simpson Bay?

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

  • Can I find deals for business class flights from St. Louis to Simpson Bay?

    Yes. Cheapflights offers flight deals from St. Louis to Simpson Bay 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 Simpson Bay?

    Currently, September is the cheapest month in which you can book a flight from St. Louis to Simpson Bay (average of $459). Flying from St. Louis to Simpson Bay in March is currently the most expensive (average of $655). 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.

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Alternative routes for St. Louis to Simpson Bay

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Kansas City to Simpson Bay flights

Top 2 airlines flying from St. Louis to Simpson Bay

Discover the top 2 airlines that operate flights from St. Louis to Simpson Bay. 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 julio 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$530Average$679FlexibilityNo cancel feeOn-time71%
DeltaCheapest$531Average$714FlexibilityNo cancel feeOn-timeN/A

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