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Cheap flights from St. Louis to Simpson Bay from $208

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Simpson Bay departing on 8/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to Simpson Bay (STL-SXM)

Cheap round-trip flights

Delta Logo
6:01 am - 1:50 pmSTL-SXM
6h 49m1 stop
Delta Logo
3:20 pm - 11:24 pmSXM-STL
9h 04m1 stop
$497Delta
Find Deal
Sat, Sep 13 - Sun, Sep 21
American Airlines Logo
4:55 pm - 1:19 pmSTL-SXM
19h 24m2 stops
American Airlines Logo
2:40 pm - 8:09 amSXM-STL
18h 29m2 stops
$502American Airlines
Find Deal
Mon, Sep 29 - Mon, Oct 6
American Airlines Logo
4:55 pm - 1:19 pmSTL-SXM
19h 24m2 stops
American Airlines Logo
2:20 pm - 11:59 pmSXM-STL
10h 39m1 stop
$503American Airlines
Find Deal
Thu, Sep 25 - Wed, Oct 1
American Airlines Logo
4:25 pm - 1:37 pmSTL-SXM
20h 12m2 stops
American Airlines Logo
4:24 pm - 8:16 amSXM-STL
16h 52m2 stops
$566American Airlines
Find Deal
Sat, Oct 11 - Sat, Oct 18
American Airlines Logo
4:54 pm - 12:20 pmSTL-SXM
18h 26m1 stop
American Airlines Logo
3:15 pm - 8:19 amSXM-STL
19h 04m2 stops
$570American Airlines
Find Deal
Fri, Aug 29 - Sat, Dec 13
American Airlines Logo
3:59 pm - 1:19 pmSTL-SXM
20h 20m2 stops
American Airlines Logo
2:20 pm - 9:16 amSXM-STL
19h 56m2 stops
$571American Airlines
Find Deal
Sat, Sep 13 - Sun, Sep 21
Logo
4:05 pm - 4:00 pmSTL-SXM
21h 55m1 stop
Logo
4:28 pm - 1:53 pmSXM-STL
23h 25m1 stop
$575
Find Deal
Tue, Jan 13 - Fri, Jan 23
Delta Logo
6:00 am - 1:45 pmSTL-SXM
6h 45m1 stop
Delta Logo
3:21 pm - 10:02 pmSXM-STL
7h 41m1 stop
$644Delta
Find Deal
Fri, Aug 29 - Sun, Aug 31
United Airlines Logo
3:14 pm - 1:50 pmSTL-SXM
20h 36m2 stops
United Airlines Logo
2:40 pm - 9:40 pmSXM-STL
9h 00m1 stop
$748United Airlines
Find Deal
Fri, Nov 28 - Sat, Dec 6
United Airlines Logo
10:00 am - 3:57 pmSTL-SXM
27h 57m1 stop
United Airlines Logo
2:40 pm - 10:45 pmSXM-STL
10h 05m1 stop
$751United Airlines
Find Deal
Fri, Nov 28 - Sat, Dec 6

American Airlines flights from St. Louis to Simpson Bay

Our best American Airlines deals on St. Louis to Simpson Bay flight tickets
American Airlines
Sep 29
STL4:55 pmLambert-St Louis
19h 24m
2 stops
SXM1:19 pmSimpson Bay Princess Juliana
Oct 6
SXM2:40 pmSimpson Bay Princess Juliana
18h 29m
2 stops
STL8:09 amLambert-St Louis
$502
Find similar
American Airlines
Sep 25
STL4:55 pmLambert-St Louis
19h 24m
2 stops
SXM1:19 pmSimpson Bay Princess Juliana
Oct 1
SXM2:20 pmSimpson Bay Princess Juliana
10h 39m
1 stop
STL11:59 pmLambert-St Louis
$503
Find similar
American Airlines
Oct 11
STL4:25 pmLambert-St Louis
20h 12m
2 stops
SXM1:37 pmSimpson Bay Princess Juliana
Oct 18
SXM4:24 pmSimpson Bay Princess Juliana
16h 52m
2 stops
STL8:16 amLambert-St Louis
$566
Find similar

Delta flights from St. Louis to Simpson Bay

Our best Delta deals on St. Louis to Simpson Bay flight tickets
Delta
Sep 13
STL6:01 amLambert-St Louis
6h 49m
1 stop
SXM1:50 pmSimpson Bay Princess Juliana
Sep 21
SXM3:20 pmSimpson Bay Princess Juliana
9h 04m
1 stop
STL11:24 pmLambert-St Louis
$497
Find similar
Delta
Aug 29
STL6:00 amLambert-St Louis
6h 45m
1 stop
SXM1:45 pmSimpson Bay Princess Juliana
Aug 31
SXM3:21 pmSimpson Bay Princess Juliana
7h 41m
1 stop
STL10:02 pmLambert-St Louis
$644
Find similar
Delta
Aug 27
STL6:00 amLambert-St Louis
6h 45m
1 stop
SXM1:45 pmSimpson Bay Princess Juliana
Sep 7
SXM3:21 pmSimpson Bay Princess Juliana
7h 41m
1 stop
STL10:02 pmLambert-St Louis
$677
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated August 16, 2025.
Use the filters below to find and compare flights from St. Louis to Simpson Bay that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Sat 9/13

6:01 am-1:50 pm

1 stop6h 49m

Simpson Bay Princess Juliana

Sun 9/21

3:20 pm-11:24 pm

1 stop9h 04m

$497

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Mon 9/29

4:55 pm-1:19 pm

2 stops19h 24m

Simpson Bay Princess Juliana

Mon 10/6

2:40 pm-8:09 am

2 stops18h 29m

$502

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Thu 9/25

4:55 pm-1:19 pm

2 stops19h 24m

Simpson Bay Princess Juliana

Wed 10/1

2:20 pm-11:59 pm

1 stop10h 39m

$503

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Sat 10/11

4:25 pm-1:37 pm

2 stops20h 12m

Simpson Bay Princess Juliana

Sat 10/18

4:24 pm-8:16 am

2 stops16h 52m

$566

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Fri 8/29

4:54 pm-12:20 pm

1 stop18h 26m

Simpson Bay Princess Juliana

Sat 12/13

3:15 pm-8:19 am

2 stops19h 04m

$570

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Sat 9/13

3:59 pm-1:19 pm

2 stops20h 20m

Simpson Bay Princess Juliana

Sun 9/21

2:20 pm-9:16 am

2 stops19h 56m

$571

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

$575

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Fri 8/29

6:00 am-1:45 pm

1 stop6h 45m

Simpson Bay Princess Juliana

Sun 8/31

3:21 pm-10:02 pm

1 stop7h 41m

$644

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Fri 11/28

3:14 pm-1:50 pm

2 stops20h 36m

Simpson Bay Princess Juliana

Sat 12/6

2:40 pm-9:40 pm

1 stop9h 00m

$748

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Fri 11/28

10:00 am-3:57 pm

1 stop27h 57m

Simpson Bay Princess Juliana

Sat 12/6

2:40 pm-10:45 pm

1 stop10h 05m

$751

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Simpson Bay from

How to get the cheapest flight ticket from St. Louis to Simpson Bay

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Simpson Bay?

In general, May is the cheapest month to fly from St. Louis to Simpson Bay. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $598. If you aren’t able to travel to Simpson Bay during the month of May, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $612.

What is the cheapest day to depart on your flight to Simpson Bay?

Our data shows that Wednesday is the least expensive day to fly to Simpson Bay. Tickets to fly out on this day can be as low as $592. Flights from St. Louis to Simpson Bay on a Saturday will generally be more expensive and average around $774. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Simpson Bay?

According to our data, the cheapest time of day to fly to Simpson Bay is in the evening. momondo users have found flights departing from St. Louis to Simpson Bay in the evening for as low as $638. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Simpson Bay is in the afternoon when prices are around $726.

How far in advance should I book a flight to Simpson Bay?

You are more likely to see cheaper flights to Simpson Bay from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Simpson Bay for around $724 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Simpson Bay from St. Louis for as low as $530 on momondo.

When to book flights from St. Louis to Simpson Bay

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Simpson Bay according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Simpson Bay (STL to SXM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Simpson Bay

Best Price Found

$208

Fastest flight time

6h 32m

Direct flights

None

Airports in Simpson Bay

1 airport
The best one-way flight to Simpson Bay from St. Louis in the past 72 hours is $208. The best round-trip flight deal from St. Louis to Simpson Bay found on momondo in the last 72 hours is $497.
The fastest flight from St. Louis to Simpson Bay takes 6h 32m
There are no direct flights from St. Louis to Simpson Bay. Popular non-direct route for this connection is Lambert-St Louis Airport - Simpson Bay Princess Juliana Airport.
There is 1 airport near Simpson Bay: Simpson Bay Princess Juliana (SXM)
Search flight deals

  • How far is Lambert-St Louis to Simpson Bay Princess Juliana by plane?

    The distance between Lambert-St Louis and Simpson Bay Princess Juliana is about 2159.4 mi. 6h 32m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Simpson Bay Princess Juliana Airport?

    Prices for flights from Lambert-St Louis Airport to Simpson Bay Princess Juliana Airport are updated daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Simpson Bay Princess Juliana Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Simpson Bay Princess Juliana Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Simpson Bay Princess Juliana Airport.

  • What documentation or ID do you need to fly to Simpson Bay Princess Juliana Airport?

    The travel and health documents you'll need for your trip to Simpson Bay Princess Juliana Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Simpson Bay Princess Juliana Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Simpson Bay?

Best airlines flying from St. Louis to Simpson Bay

Compare and see reviews for airlines that fly from St. Louis to Simpson Bay with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $530Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $573Free CancellationRating
8.0
7,985 reviews
Search Delta flights

Traveling to a place near Simpson Bay?

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

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Simpson Bay?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Simpson Bay for you.

Can I find flights from St. Louis to Simpson Bay with flexible booking policies on momondo?

Flights from St. Louis to Simpson Bay with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Simpson Bay?

momondo provides multiple filters to help you find the best flight to Simpson Bay from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from St. Louis to Simpson Bay right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Simpson Bay flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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