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Cheap flights from St. Louis to Saint Croix from $366

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Saint Croix departing on 4/20. 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
1 adult, Economy, 0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
5:24 am - 4:13 pm
STL
-
STX
9h 49m
1 stop
American Airlines Logo
5:14 pm - 10:16 am
STX
-
STL
18h 02m
1 stop
$366American Airlines
Mon, Apr 20 - Mon, May 11
American Airlines Logo
5:24 am - 1:15 pm
STL
-
STX
6h 51m
1 stop
American Airlines Logo
5:14 pm - 11:27 am
STX
-
STL
19h 13m
2 stops
$370American Airlines
Mon, Apr 20 - Mon, May 11
American Airlines Logo
5:24 am - 4:13 pm
STL
-
STX
9h 49m
1 stop
American Airlines Logo
5:14 pm - 10:16 am
STX
-
STL
18h 02m
1 stop
$396American Airlines
Mon, Apr 20 - Mon, May 11
American Airlines Logo
6:20 pm - 4:27 pm
STL
-
STX
21h 07m
1 stop
American Airlines Logo
5:17 pm - 10:16 am
STX
-
STL
17h 59m
1 stop
$398American Airlines
Thu, Apr 2 - Mon, Apr 6
American Airlines Logo
6:55 pm - 1:15 pm
STL
-
STX
17h 20m
2 stops
American Airlines Logo
5:14 pm - 10:16 am
STX
-
STL
18h 02m
1 stop
$400American Airlines
Mon, Apr 20 - Mon, May 11
American Airlines Logo
6:20 pm - 12:56 pm
STL
-
STX
17h 36m
1 stop
American Airlines Logo
5:17 pm - 10:16 am
STX
-
STL
17h 59m
1 stop
$401American Airlines
Wed, Apr 1 - Mon, Apr 6
American Airlines Logo
6:54 pm - 4:13 pm
STL
-
STX
20h 19m
2 stops
American Airlines Logo
5:14 pm - 1:22 pm
STX
-
STL
21h 08m
2 stops
$405American Airlines
Wed, May 13 - Tue, May 19
American Airlines Logo
11:06 am - 4:13 pm
STL
-
STX
28h 07m
1 stop
American Airlines Logo
5:14 pm - 10:16 am
STX
-
STL
18h 02m
1 stop
$464American Airlines
Wed, May 13 - Tue, May 19
American Airlines Logo
5:15 am - 12:56 pm
STL
-
STX
6h 41m
1 stop
American Airlines Logo
5:17 pm - 11:58 pm
STX
-
STL
7h 41m
1 stop
$496American Airlines
Mon, Mar 30 - Sun, Apr 5
American Airlines Logo
6:55 pm - 1:15 pm
STL
-
STX
17h 20m
2 stops
American Airlines Logo
5:14 pm - 10:16 am
STX
-
STL
18h 02m
1 stop
$500American Airlines
Thu, Apr 16 - Thu, Apr 23

American Airlines flights from St. Louis to Saint Croix

Our best American Airlines deals on St. Louis to Saint Croix flight tickets
American Airlines
Apr 20
STL5:24 amLambert-St Louis
9h 49m
1 stop
STX4:13 pmChristiansted Henry Rohlsen
May 11
STX5:14 pmChristiansted Henry Rohlsen
18h 02m
1 stop
STL10:16 amLambert-St Louis
$366
American Airlines
Apr 20
STL5:24 amLambert-St Louis
6h 51m
1 stop
STX1:15 pmChristiansted Henry Rohlsen
May 11
STX5:14 pmChristiansted Henry Rohlsen
19h 13m
2 stops
STL11:27 amLambert-St Louis
$370
American Airlines
Apr 20
STL5:24 amLambert-St Louis
9h 49m
1 stop
STX4:13 pmChristiansted Henry Rohlsen
May 11
STX5:14 pmChristiansted Henry Rohlsen
18h 02m
1 stop
STL10:16 amLambert-St Louis
$396

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Saint Croix 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 March 18, 2026.
Use the filters below to find and compare flights from St. Louis to Saint Croix that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisChristiansted

STL - STX

STLSTX

Lambert-St Louis

Mon 4/20

5:24 am-4:13 pm

1 stop9h 49m

Christiansted Henry Rohlsen

Mon 5/11

5:14 pm-10:16 am

1 stop18h 02m

$366

St. LouisChristiansted

STL - STX

STLSTX

Lambert-St Louis

Mon 4/20

5:24 am-1:15 pm

1 stop6h 51m

Christiansted Henry Rohlsen

Mon 5/11

5:14 pm-11:27 am

2 stops19h 13m

$370

St. LouisChristiansted

STL - STX

STLSTX

Lambert-St Louis

Mon 4/20

5:24 am-4:13 pm

1 stop9h 49m

Christiansted Henry Rohlsen

Mon 5/11

5:14 pm-10:16 am

1 stop18h 02m

$396

St. LouisChristiansted

STL - STX

STLSTX

Lambert-St Louis

Thu 4/2

6:20 pm-4:27 pm

1 stop21h 07m

Christiansted Henry Rohlsen

Mon 4/6

5:17 pm-10:16 am

1 stop17h 59m

$398

St. LouisChristiansted

STL - STX

STLSTX

Lambert-St Louis

Mon 4/20

6:55 pm-1:15 pm

2 stops17h 20m

Christiansted Henry Rohlsen

Mon 5/11

5:14 pm-10:16 am

1 stop18h 02m

$400

St. LouisChristiansted

STL - STX

STLSTX

Lambert-St Louis

Wed 4/1

6:20 pm-12:56 pm

1 stop17h 36m

Christiansted Henry Rohlsen

Mon 4/6

5:17 pm-10:16 am

1 stop17h 59m

$401

St. LouisChristiansted

STL - STX

STLSTX

Lambert-St Louis

Wed 5/13

6:54 pm-4:13 pm

2 stops20h 19m

Christiansted Henry Rohlsen

Tue 5/19

5:14 pm-1:22 pm

2 stops21h 08m

$405

St. LouisChristiansted

STL - STX

STLSTX

Lambert-St Louis

Wed 5/13

11:06 am-4:13 pm

1 stop28h 07m

Christiansted Henry Rohlsen

Tue 5/19

5:14 pm-10:16 am

1 stop18h 02m

$464
Quickest round-trip

St. LouisChristiansted

STL - STX

STLSTX

Lambert-St Louis

Mon 3/30

5:15 am-12:56 pm

1 stop6h 41m

Christiansted Henry Rohlsen

Sun 4/5

5:17 pm-11:58 pm

1 stop7h 41m

$496

St. LouisChristiansted

STL - STX

STLSTX

Lambert-St Louis

Thu 4/16

6:55 pm-1:15 pm

2 stops17h 20m

Christiansted Henry Rohlsen

Thu 4/23

5:14 pm-10:16 am

1 stop18h 02m

$500

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap St. Louis to Saint Croix flight deals and tips

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

Fastest flight time

6h 18m

Direct flights

None
The fastest flight from St. Louis to Saint Croix takes 6h 18m
There are no direct flights from St. Louis to Saint Croix. There are no popular flight routes from St. Louis to Saint Croix.
Search flight deals

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Saint Croix?

    Prices for flights from Lambert-St Louis Airport to Saint Croix are updated daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Saint Croix?

  • How old do you have to be to fly from Lambert-St Louis Airport to Saint Croix?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Saint Croix.

  • What documentation or ID do you need to fly to Saint Croix?

    The necessary travel and health documents for your Saint Croix trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to Saint Croix

Compare and see reviews for airlines that fly from St. Louis to Saint Croix with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $439Free CancellationRating
7.1
11,468 reviews
Search American Airlines flights

  • How do I get Price Alerts for flights from St. Louis to Saint Croix?

    Price Alerts will notify you by email when the price for flights to Saint Croix from St. Louis decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from St. Louis to Saint Croix with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Saint Croix?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Saint Croix from St. Louis.

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

Yes. momondo allows you to filter the results for St. Louis to Saint Croix flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Saint Croix?

momondo helps you find the best flight between St. Louis and Saint Croix by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of St. Louis to Saint Croix flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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