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

Prices for flights from Lambert-St Louis Airport to Saint Lucia were last updated today.

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

As of October 2025, there are 2 operators available to choose from for flights from Lambert-St Louis Airport to Saint Lucia.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Saint Lucia.

What documentation or ID do you need to fly to Saint Lucia?

The necessary travel and health documents for your Saint Lucia 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.

$600 Cheap Flights from St. Louis to Saint Lucia in 2025/26

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6:09 pm - 1:47 pmSTL-UVF

17h 38m1 stop

5:02 pm - 9:08 amUVF-STL

18h 06m1 stop

$600American Airlines

Find Deal

Wed, Jan 21 - Fri, Jan 30

5:59 pm - 4:02 pmSTL-UVF

20h 03m2 stops

5:02 pm - 9:08 amUVF-STL

18h 06m1 stop

$605American Airlines

Find Deal

Wed, Jan 21 - Fri, Jan 30

6:00 am - 3:39 pmSTL-UVF

7h 39m1 stop

4:56 pm - 8:24 amUVF-STL

17h 28m1 stop

$617Delta

Find Deal

Tue, Nov 25 - Tue, Dec 2

6:53 pm - 1:19 pmSTL-UVF

16h 26m2 stops

4:53 pm - 10:36 amUVF-STL

19h 43m2 stops

$631American Airlines

Find Deal

Sun, Dec 7 - Sun, Dec 14

5:10 am - 3:53 pmSTL-UVF

8h 43m1 stop

4:53 pm - 9:32 amUVF-STL

18h 39m2 stops

$670American Airlines

Find Deal

Sun, Dec 7 - Sun, Dec 14

6:00 am - 3:26 pmSTL-UVF

7h 26m1 stop

4:59 pm - 8:28 amUVF-STL

17h 29m1 stop

$1,041Delta

Find Deal

Thu, Nov 6 - Tue, Nov 11

12:31 pm - 1:10 pmSTL-SLU

22h 39m3 stops

12:10 pm - 3:29 pmSLU-STL

29h 19m3 stops

$1,636Multiple Airlines

Find Deal

Wed, Nov 26 - Sun, Nov 30

4:05 pm - 1:10 pmSTL-SLU

19h 05m2 stops

12:10 pm - 3:29 pmSLU-STL

29h 19m3 stops

$1,710Multiple Airlines

Find Deal

Wed, Nov 26 - Sun, Nov 30

6:09 pm - 2:50 pmSTL-UVF

42h 41m2 stops

3:40 pm - 8:19 pmUVF-STL

30h 39m2 stops

$4,071WestJet

Find Deal

Tue, Nov 18 - Tue, Nov 25

1:35 pm - 2:50 pmSTL-UVF

23h 15m2 stops

3:40 pm - 1:51 pmUVF-STL

24h 11m2 stops

$4,209WestJet

Find Deal

Wed, Nov 26 - Sun, Nov 30

American Airlines flights from St. Louis to Saint Lucia

Our best American Airlines deals on St. Louis to Saint Lucia flight tickets

American Airlines

Jan 21

STL6:09 pmLambert-St Louis

17h 38m

1 stop

UVF1:47 pmCastries Hewanorra

Jan 30

UVF5:02 pmCastries Hewanorra

18h 06m

1 stop

STL9:08 amLambert-St Louis

$600

Find similar

American Airlines

Jan 21

STL5:59 pmLambert-St Louis

20h 03m

2 stops

UVF4:02 pmCastries Hewanorra

Jan 30

UVF5:02 pmCastries Hewanorra

18h 06m

1 stop

STL9:08 amLambert-St Louis

$605

Find similar

American Airlines

Dec 7

STL6:53 pmLambert-St Louis

16h 26m

2 stops

UVF1:19 pmCastries Hewanorra

Dec 14

UVF4:53 pmCastries Hewanorra

19h 43m

2 stops

STL10:36 amLambert-St Louis

$631

Find similar

Delta flights from St. Louis to Saint Lucia

Our best Delta deals on St. Louis to Saint Lucia flight tickets

Delta

Nov 25

STL6:00 amLambert-St Louis

7h 39m

1 stop

UVF3:39 pmCastries Hewanorra

Dec 2

UVF4:56 pmCastries Hewanorra

17h 28m

1 stop

STL8:24 amLambert-St Louis

$617

Find similar

Delta

Nov 6

STL6:00 amLambert-St Louis

7h 26m

1 stop

UVF3:26 pmCastries Hewanorra

Nov 11

UVF4:59 pmCastries Hewanorra

17h 29m

1 stop

STL8:28 amLambert-St Louis

$1,041

Find similar

Delta

Nov 6

STL6:00 amLambert-St Louis

7h 26m

1 stop

UVF3:26 pmCastries Hewanorra

Nov 11

UVF4:59 pmCastries Hewanorra

17h 29m

1 stop

STL8:28 amLambert-St Louis

$1,142

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Wed 1/21

6:09 pm-1:47 pm

1 stop17h 38m

Castries Hewanorra

Fri 1/30

5:02 pm-9:08 am

1 stop18h 06m

$600

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Wed 1/21

5:59 pm-4:02 pm

2 stops20h 03m

Castries Hewanorra

Fri 1/30

5:02 pm-9:08 am

1 stop18h 06m

$605

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Tue 11/25

6:00 am-3:39 pm

1 stop7h 39m

Castries Hewanorra

Tue 12/2

4:56 pm-8:24 am

1 stop17h 28m

$617

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Sun 12/7

6:53 pm-1:19 pm

2 stops16h 26m

Castries Hewanorra

Sun 12/14

4:53 pm-10:36 am

2 stops19h 43m

$631

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Sun 12/7

5:10 am-3:53 pm

1 stop8h 43m

Castries Hewanorra

Sun 12/14

4:53 pm-9:32 am

2 stops18h 39m

$670

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Thu 11/6

6:00 am-3:26 pm

1 stop7h 26m

Castries Hewanorra

Tue 11/11

4:59 pm-8:28 am

1 stop17h 29m

$1,041

St. LouisCastries

STL - SLU

STLSLU

Lambert-St Louis

Wed 11/26

12:31 pm-1:10 pm

3 stops22h 39m

Castries George F. L. Charle

Sun 11/30

12:10 pm-3:29 pm

3 stops29h 19m

$1,636

St. LouisCastries

STL - SLU

STLSLU

Lambert-St Louis

Wed 11/26

4:05 pm-1:10 pm

2 stops19h 05m

Castries George F. L. Charle

Sun 11/30

12:10 pm-3:29 pm

3 stops29h 19m

$1,710

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Tue 11/18

6:09 pm-2:50 pm

2 stops42h 41m

Castries Hewanorra

Tue 11/25

3:40 pm-8:19 pm

2 stops30h 39m

$4,071

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Wed 11/26

1:35 pm-2:50 pm

2 stops23h 15m

Castries Hewanorra

Sun 11/30

3:40 pm-1:51 pm

2 stops24h 11m

$4,209

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Saint Lucia

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 day to depart on your flight to Saint Lucia?

Our data shows that Wednesday is the least expensive day to fly to Saint Lucia. Tickets to fly out on this day can be as low as $591. On the other hand, Thursday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $862.

Cheap St. Louis to Saint Lucia flight deals and tips

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

Direct flights	None

There are no direct flights from St. Louis to Saint Lucia. There are no popular flight routes from St. Louis to Saint Lucia.

Search flight deals

When did momondo last update prices for flights from Lambert-St Louis Airport to Saint Lucia?
Prices for flights from Lambert-St Louis Airport to Saint Lucia were last updated today.
How many operators does momondo search for flights from Lambert-St Louis Airport to Saint Lucia?
As of October 2025, there are 2 operators available to choose from for flights from Lambert-St Louis Airport to Saint Lucia.
How old do you have to be to fly from Lambert-St Louis Airport to Saint Lucia?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Saint Lucia.
What documentation or ID do you need to fly to Saint Lucia?
The necessary travel and health documents for your Saint Lucia 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 Lucia

Compare and see reviews for airlines that fly from St. Louis to Saint Lucia with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $565	Free Cancellation	Rating 7.2 11,032 reviews		Search American Airlines flights
Delta	PriceFrom $565	Free Cancellation	Rating 7.9 7,982 reviews		Search Delta flights

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

Finding the right flight to Saint Lucia from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Saint Lucia quick and easy, saving you time and money.

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

All flight searches from St. Louis to Saint Lucia on momondo can be filtered to show those which offer flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Saint Lucia 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 Saint Lucia right now. Can momondo alert me if prices change?

Price alerts on flights to Saint Lucia from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Saint Lucia trip

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Popular cities in Saint Lucia

Flights to Castriesfrom $449

Cheap flights from St. Louis to Saint Lucia from $600

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 Lucia departing on 1/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

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Price Alerts

Price Alerts

Find the cheapest flights from St. Louis to Saint Lucia

Cheap round-trip flights

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American Airlines flights from St. Louis to Saint Lucia

Our best American Airlines deals on St. Louis to Saint Lucia flight tickets

Delta flights from St. Louis to Saint Lucia

Our best Delta deals on St. Louis to Saint Lucia flight tickets

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How to get the cheapest flight ticket from St. Louis to Saint Lucia

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 day to depart on your flight to Saint Lucia?

Cheap St. Louis to Saint Lucia flight deals and tips

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

Direct flights

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

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

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

What documentation or ID do you need to fly to Saint Lucia?

Best airlines flying from St. Louis to Saint Lucia

Compare and see reviews for airlines that fly from St. Louis to Saint Lucia with momondo

Why use momondo?

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

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

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

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

An easier way to manage your Saint Lucia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Saint Lucia

Popular cities in Saint Lucia

Popular flights according to clicks in the last 7 days on momondo