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Cheap flights from St. Louis to Simpson Bay from $135

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 5/15. 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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
4:17 pm - 11:23 am
STL
-
SXM
18h 06m
1 stop
Frontier Logo
12:43 pm - 12:09 am
SXM
-
STL
12h 26m
1 stop
$357Frontier
Fri, Jun 12 - Sat, Jun 20
Multiple Airlines Logo
1:05 pm - 5:00 pm
STL
-
SXM
50h 55m
2 stops
Multiple Airlines Logo
12:43 pm - 12:09 am
SXM
-
STL
12h 26m
1 stop
$393Multiple Airlines
Tue, Jun 16 - Sat, Jun 20
Frontier Logo
5:06 pm - 11:23 am
STL
-
SXM
17h 17m
2 stops
Frontier Logo
12:43 pm - 12:09 am
SXM
-
STL
12h 26m
1 stop
$422Frontier
Fri, Jun 12 - Sat, Jun 20
Air Canada Logo
1:05 pm - 5:00 pm
STL
-
SXM
50h 55m
2 stops
Air Canada Logo
6:00 pm - 8:25 pm
SXM
-
STL
51h 25m
2 stops
$475Air Canada
Tue, Jun 16 - Sat, Jun 20
Frontier Logo
5:06 pm - 11:23 am
STL
-
SXM
17h 17m
2 stops
Frontier Logo
12:43 pm - 6:18 pm
SXM
-
STL
30h 35m
2 stops
$526Frontier
Fri, Jun 12 - Sat, Jun 20
American Airlines Logo
6:54 pm - 1:21 pm
STL
-
SXM
17h 27m
1 stop
American Airlines Logo
2:22 pm - 10:58 pm
SXM
-
STL
9h 36m
1 stop
$529American Airlines
Sun, May 17 - Thu, May 21
American Airlines Logo
6:54 pm - 1:21 pm
STL
-
SXM
17h 27m
1 stop
American Airlines Logo
2:22 pm - 8:33 am
SXM
-
STL
19h 11m
2 stops
$534American Airlines
Sun, May 17 - Thu, May 21
Multiple Airlines Logo
1:05 pm - 5:00 pm
STL
-
SXM
50h 55m
2 stops
Multiple Airlines Logo
6:00 pm - 6:36 pm
SXM
-
STL
25h 36m
3 stops
$546Multiple Airlines
Tue, Jun 16 - Sat, Jun 20
American Airlines Logo
6:53 pm - 1:21 pm
STL
-
SXM
17h 28m
1 stop
American Airlines Logo
2:21 pm - 10:53 pm
SXM
-
STL
9h 32m
1 stop
$564American Airlines
Sat, May 9 - Sat, May 16
American Airlines Logo
6:54 pm - 11:37 am
STL
-
SXM
15h 43m
2 stops
American Airlines Logo
2:22 pm - 8:33 am
SXM
-
STL
19h 11m
2 stops
$566American Airlines
Sun, May 17 - Thu, May 21

American Airlines flights from St. Louis to Simpson Bay

Our best American Airlines deals on St. Louis to Simpson Bay flight tickets
American Airlines
May 17
STL6:54 pmLambert-St Louis
17h 27m
1 stop
SXM1:21 pmSimpson Bay Princess Juliana
May 21
SXM2:22 pmSimpson Bay Princess Juliana
9h 36m
1 stop
STL10:58 pmLambert-St Louis
$529
American Airlines
May 17
STL6:54 pmLambert-St Louis
17h 27m
1 stop
SXM1:21 pmSimpson Bay Princess Juliana
May 21
SXM2:22 pmSimpson Bay Princess Juliana
19h 11m
2 stops
STL8:33 amLambert-St Louis
$534
American Airlines
May 9
STL6:53 pmLambert-St Louis
17h 28m
1 stop
SXM1:21 pmSimpson Bay Princess Juliana
May 16
SXM2:21 pmSimpson Bay Princess Juliana
9h 32m
1 stop
STL10:53 pmLambert-St Louis
$564

United Airlines flights from St. Louis to Simpson Bay

Our best United Airlines deals on St. Louis to Simpson Bay flight tickets
United Airlines
May 29
STL6:00 amLambert-St Louis
7h 43m
1 stop
SXM2:43 pmSimpson Bay Princess Juliana
Jun 5
SXM3:50 pmSimpson Bay Princess Juliana
21h 17m
2 stops
STL12:07 pmLambert-St Louis
$624
United Airlines
Jun 8
STL6:55 pmLambert-St Louis
18h 48m
2 stops
SXM2:43 pmSimpson Bay Princess Juliana
Jun 11
SXM1:35 pmSimpson Bay Princess Juliana
23h 36m
2 stops
STL12:11 pmLambert-St Louis
$750
United Airlines
Jun 8
STL8:15 pmLambert-St Louis
17h 28m
2 stops
SXM2:43 pmSimpson Bay Princess Juliana
Jun 11
SXM1:35 pmSimpson Bay Princess Juliana
11h 00m
1 stop
STL11:35 pmLambert-St Louis
$808

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 April 18, 2026.
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

Cheapest round-trip

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Fri 6/12

4:17 pm-11:23 am

1 stop18h 06m

Simpson Bay Princess Juliana

Sat 6/20

12:43 pm-12:09 am

1 stop12h 26m

$357

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Tue 6/16

1:05 pm-5:00 pm

2 stops50h 55m

Simpson Bay Princess Juliana

Sat 6/20

12:43 pm-12:09 am

1 stop12h 26m

$393

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Fri 6/12

5:06 pm-11:23 am

2 stops17h 17m

Simpson Bay Princess Juliana

Sat 6/20

12:43 pm-12:09 am

1 stop12h 26m

$422

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Tue 6/16

1:05 pm-5:00 pm

2 stops50h 55m

Simpson Bay Princess Juliana

Sat 6/20

6:00 pm-8:25 pm

2 stops51h 25m

$475

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Fri 6/12

5:06 pm-11:23 am

2 stops17h 17m

Simpson Bay Princess Juliana

Sat 6/20

12:43 pm-6:18 pm

2 stops30h 35m

$526

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Sun 5/17

6:54 pm-1:21 pm

1 stop17h 27m

Simpson Bay Princess Juliana

Thu 5/21

2:22 pm-10:58 pm

1 stop9h 36m

$529

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Sun 5/17

6:54 pm-1:21 pm

1 stop17h 27m

Simpson Bay Princess Juliana

Thu 5/21

2:22 pm-8:33 am

2 stops19h 11m

$534

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Tue 6/16

1:05 pm-5:00 pm

2 stops50h 55m

Simpson Bay Princess Juliana

Sat 6/20

6:00 pm-6:36 pm

3 stops25h 36m

$546
Quickest round-trip

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Sat 5/9

6:53 pm-1:21 pm

1 stop17h 28m

Simpson Bay Princess Juliana

Sat 5/16

2:21 pm-10:53 pm

1 stop9h 32m

$564

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Sun 5/17

6:54 pm-11:37 am

2 stops15h 43m

Simpson Bay Princess Juliana

Thu 5/21

2:22 pm-8:33 am

2 stops19h 11m

$566

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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 typical price of a round-trip flight between St. Louis and Simpson Bay?

What is the cheapest month to fly to Simpson Bay?

In general, September 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 $517. If you aren’t able to travel to Simpson Bay during the month of September, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $585.

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

Fastest flight time

6h 51m

Direct flights

None
The fastest flight from St. Louis to Simpson Bay takes 6h 51m
There are no direct flights from St. Louis to Simpson Bay. There are no popular flight routes from St. Louis to Simpson Bay.
Search flight deals

Frequently asked questions about flying from St. Louis to Simpson Bay

  • 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 51m 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
DeltaPriceFrom $473Free CancellationRating
7.9
8,424 reviews
Search Delta flights
American AirlinesPriceFrom $553Free CancellationRating
7.1
11,604 reviews
Search American Airlines 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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