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Simpson Bay

$365+ Cheap flights from St. Louis (STL) to Simpson Bay (SXM)

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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SXM
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
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 January 26, 2026.

This Air Canada deal was found by Cheapflights users on 1/26. 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.
Tue 3/34:05 pm
STL
-
SXM
1 stop21h 55m
Air Canada
Fri 3/134:00 pm
SXM
-
STL
1 stop24h 29m
Air Canada
Deal found 1/26$365
This Delta deal was found by Cheapflights users on 1/25. 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.
Sat 2/216:00 am
STL
-
SXM
1 stop6h 50m
Delta
Wed 2/251:38 pm
SXM
-
STL
1 stop11h 58m
Delta
Deal found 1/25$435
This American Airlines deal was found by Cheapflights users on 1/25. 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.
Tue 3/33:33 pm
STL
-
SXM
2 stops18h 56m
American Airlines
Fri 3/1312:29 pm
SXM
-
STL
2 stops21h 06m
American Airlines
Deal found 1/25$440
This American Airlines deal was found by Cheapflights users on 1/26. 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 3/25:14 am
STL
-
SXM
1 stop9h 14m
American Airlines
Sun 3/84:01 pm
SXM
-
STL
1 stop21h 43m
American Airlines
Deal found 1/26$464
This Air Canada deal was found by Cheapflights users on 1/25. 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 2/214:05 pm
STL
-
SXM
2 stops20h 35m
Air Canada
Wed 2/255:00 pm
SXM
-
STL
1 stop24h 29m
Air Canada
Deal found 1/25$473
This American Airlines deal was found by Cheapflights users on 1/25. 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 4/56:50 pm
STL
-
SXM
2 stops17h 31m
American Airlines
Fri 4/104:35 pm
SXM
-
STL
2 stops20h 02m
American Airlines
Deal found 1/25$480
This Air Canada deal was found by Cheapflights users on 1/25. 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.
Thu 1/294:05 pm
STL
-
SXM
1 stop21h 55m
Air Canada
Sat 1/315:00 pm
SXM
-
STL
1 stop24h 29m
Air Canada
Deal found 1/25$484
This American Airlines deal was found by Cheapflights users on 1/25. 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 2/216:53 pm
STL
-
SXM
1 stop17h 23m
American Airlines
Sat 2/284:35 pm
SXM
-
STL
1 stop21h 58m
American Airlines
Deal found 1/25$485
This American Airlines deal was found by Cheapflights users on 1/25. 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 3/65:14 am
STL
-
SXM
1 stop7h 05m
American Airlines
Tue 3/103:01 pm
SXM
-
STL
1 stop18h 34m
American Airlines
Deal found 1/25$505
This American Airlines deal was found by Cheapflights users on 1/25. 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 2/216:53 pm
STL
-
SXM
2 stops19h 35m
American Airlines
Wed 2/251:29 pm
SXM
-
STL
2 stops12h 19m
American Airlines
Deal found 1/25$510

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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$365
(Air Canada)

Popular in

December

Cheapest in

September

Average price

$688
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
Highest demand for flights based on searches. 10% potential increase in price ($83 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 26, 2026.
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 3/3

4:05 pm-4:00 pm

1 stop21h 55m

Simpson Bay Princess Juliana

Fri 3/13

4:00 pm-3:29 pm

1 stop24h 29m

$365

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Sat 4/11

6:53 pm-1:21 pm

1 stop17h 28m

Simpson Bay Princess Juliana

Wed 4/22

2:21 pm-10:24 pm

1 stop9h 03m

$435

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Sat 4/18

6:53 pm-1:21 pm

1 stop17h 28m

Simpson Bay Princess Juliana

Fri 4/24

4:35 pm-11:37 am

2 stops20h 02m

$440

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Tue 3/3

2:21 pm-12:29 pm

2 stops20h 08m

Simpson Bay Princess Juliana

Fri 3/13

4:28 pm-11:58 pm

1 stop8h 30m

$440

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Mon 3/2

6:00 am-4:00 pm

1 stop8h 00m

Simpson Bay Princess Juliana

Sun 3/8

4:01 pm-12:44 pm

1 stop21h 43m

$464

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Simpson Bay flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 January 23, 2026.

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.

How much does it cost to fly round-trip from St. Louis to Simpson Bay?

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 January 26, 2026.
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
8,111 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.8

Food

7.2

Comfort

7.9

Crew

8.5

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
8,111 reviews
Delta
7.9
Good
8,111 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.8

Food

7.2

Comfort

7.9

Crew

8.5

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
11,189 reviews
Delta
7.9
Good
8,111 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.8

Food

7.2

Comfort

7.9

Crew

8.5

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 17h 28m. Fly via Air Canada or American Airlines to get the fastest option. The distance from St. Louis to Simpson Bay is about 2172 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $554 round trip. Delta is 28% 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

Browse thousands of different options on Cheapflights for your next trip

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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 January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$497Average$633FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$554Average$686FlexibilityNo cancel feeOn-time71%

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