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Simpson Bay

$251+ 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 5/17. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SXM
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap 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 December 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:42 amSTL - SXM
2 stops25h 33mMultiple Airlines
Wed 12/313:20 pmSXM - STL
1 stop21h 36mMultiple Airlines
Deal found 12/9$400
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:42 amSTL - SXM
2 stops25h 33mMultiple Airlines
Mon 12/293:20 pmSXM - STL
1 stop21h 36mMultiple Airlines
Deal found 12/9$428
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2310:48 amSTL - SXM
2 stops25h 27mMultiple Airlines
Wed 12/313:20 pmSXM - STL
1 stop21h 36mMultiple Airlines
Deal found 12/9$440
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2310:48 amSTL - SXM
2 stops25h 27mMultiple Airlines
Mon 12/293:20 pmSXM - STL
1 stop21h 36mMultiple Airlines
Deal found 12/9$468
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:51 amSTL - SXM
1 stop24h 24mSpirit Airlines
Wed 12/313:20 pmSXM - STL
1 stop21h 36mSpirit Airlines
Deal found 12/9$473
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2810:57 amSTL - SXM
2 stops25h 18mMultiple Airlines
Wed 12/313:20 pmSXM - STL
1 stop21h 36mMultiple Airlines
Deal found 12/9$475
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2110:57 amSTL - SXM
2 stops25h 18mMultiple Airlines
Wed 12/313:20 pmSXM - STL
1 stop21h 36mMultiple Airlines
Deal found 12/11$478
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2311:51 amSTL - SXM
1 stop24h 24mSpirit Airlines
Wed 12/313:20 pmSXM - STL
1 stop21h 36mSpirit Airlines
Deal found 12/9$487
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:51 amSTL - SXM
1 stop24h 24mSpirit Airlines
Mon 12/293:20 pmSXM - STL
1 stop21h 36mSpirit Airlines
Deal found 12/9$501
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2311:51 amSTL - SXM
1 stop24h 24mSpirit Airlines
Mon 12/293:20 pmSXM - STL
1 stop21h 36mSpirit Airlines
Deal found 12/9$515
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2811:51 amSTL - SXM
1 stop24h 24mSpirit Airlines
Wed 12/313:20 pmSXM - STL
1 stop21h 36mSpirit Airlines
Deal found 12/9$521

Find 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$392
(Frontier)

One-way from

$251
(Delta)

Popular in

December

Cheapest in

August

Average price

$1,055
Provider with most accurate pricing for Lambert-St Louis-Simpson Bay Princess Juliana flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Simpson Bay Princess Juliana flights.
Search Deals
From Lambert-St Louis to Simpson Bay Princess Juliana
Search Deals
One-way flight from Lambert-St Louis to Simpson Bay Princess Juliana
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($120 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($31 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 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 December 12, 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

Tue 2/17

6:00 am-2:50 pm

1 stop6h 50m

Simpson Bay Princess Juliana

Tue 2/24

1:38 pm-7:22 pm

1 stop7h 44m

$465

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Tue 2/17

6:00 am-2:50 pm

1 stop6h 50m

Simpson Bay Princess Juliana

Wed 2/25

1:38 pm-11:36 pm

1 stop11h 58m

$465

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Wed 2/4

6:00 am-2:55 pm

1 stop6h 55m

Simpson Bay Princess Juliana

Thu 2/12

1:38 pm-8:41 pm

1 stop9h 03m

$465

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Tue 1/13

6:00 am-2:55 pm

1 stop6h 55m

Simpson Bay Princess Juliana

Fri 1/23

1:55 pm-8:37 pm

1 stop8h 42m

$465

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Sun 1/18

6:00 am-2:55 pm

1 stop6h 55m

Simpson Bay Princess Juliana

Fri 1/23

1:55 pm-11:37 pm

1 stop11h 42m

$465

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Mon 2/16

6:00 am-2:50 pm

1 stop6h 50m

Simpson Bay Princess Juliana

Wed 2/25

1:38 pm-11:36 pm

1 stop11h 58m

$465

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Tue 1/20

6:00 am-2:55 pm

1 stop6h 55m

Simpson Bay Princess Juliana

Wed 1/28

1:55 pm-11:37 pm

1 stop11h 42m

$465

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Sun 1/18

3:54 pm-12:58 pm

2 stops19h 04m

Simpson Bay Princess Juliana

Fri 1/23

5:33 pm-9:08 am

1 stop17h 35m

$470

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Wed 2/18

11:55 am-12:13 pm

2 stops22h 18m

Simpson Bay Princess Juliana

Tue 2/24

1:38 pm-7:22 pm

1 stop7h 44m

$470

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Mon 2/16

6:00 am-2:50 pm

1 stop6h 50m

Simpson Bay Princess Juliana

Fri 2/27

4:15 pm-3:55 pm

2 stops25h 40m

$470

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 20 results
1
2

Compare providers for flights from St. Louis to Simpson Bay

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Simpson Bay in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Simpson Bay flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Simpson Bay flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Simpson Bay flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Simpson Bay flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Simpson Bay flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 December 5, 2025.

The best time to book flights from St. Louis to Simpson Bay is 38 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, January is the cheapest month in which you can book a flight from St. Louis to Simpson Bay (average of $489). Flying from St. Louis to Simpson Bay 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 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 December 12, 2025.
Read reviews from past customers who have flown Delta and American 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
7.9
Good
8,007 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.3

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,007 reviews
Delta
7.9
Good
8,007 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.3

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,050 reviews
Delta
7.9
Good
8,007 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.3

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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.

  • How long is the flight from St. Louis to Simpson Bay?

    There are many flights that can get you from St. Louis to Simpson Bay in 6h 50m. Fly via Delta to get the fastest option. The distance from St. Louis to Simpson Bay is about 2172 mi.

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

    Flying on Delta is currently your cheapest option to Simpson Bay, with prices starting at $497. Another option worth looking into is American Airlines, starting at $560 round trip. Delta is 30% 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, January is the cheapest month in which you can book a flight from St. Louis to Simpson Bay (average of $489). Flying from St. Louis to Simpson Bay 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

Traveling to a place near Simpson Bay?

Book flights to Simpson Bay if you plan to visit one of these locations
Philipsburg

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Alternative routes for St. Louis to Simpson Bay

See prices for flight routes from nearby airports that may be better suited for you.
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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$497Average$657FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$560Average$730FlexibilityNo cancel feeOn-time71%

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