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Cheap flights from St. Louis to Saint Lucia from $642

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Saint Lucia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
4:05 pm - 4:40 pmSTL  Lambert-St Louis-UVF Castries Hewanorra
22h 35m1 stop Toronto Pearson Intl
Air Canada Logo
5:35 pm - 3:26 pmUVF  Castries Hewanorra-STL Lambert-St Louis
23h 51m1 stop Toronto Pearson Intl
$642Air Canada
Sun, Dec 13 - Sun, Dec 20
American Airlines Logo
5:00 am - 3:38 pmSTL  Lambert-St Louis-UVF Castries Hewanorra
8h 38m1 stop Miami
American Airlines Logo
3:46 pm - 10:42 pmUVF  Castries Hewanorra-STL Lambert-St Louis
8h 56m1 stop Miami
$671American Airlines
Sun, Jan 24 - Thu, Jan 28
American Airlines Logo
5:00 pm - 2:46 pmSTL  Lambert-St Louis-UVF Castries Hewanorra
19h 46m2 stops Dallas/Fort Worth Miami
American Airlines Logo
4:38 pm - 11:04 amUVF  Castries Hewanorra-STL Lambert-St Louis
20h 26m2 stops Miami Chicago O'Hare Intl
$675American Airlines
Sat, Jan 23 - Fri, Jan 29
American Airlines Logo
6:00 pm - 2:46 pmSTL  Lambert-St Louis-UVF Castries Hewanorra
18h 46m2 stops Dallas/Fort Worth Miami
American Airlines Logo
4:38 pm - 10:34 amUVF  Castries Hewanorra-STL Lambert-St Louis
19h 56m2 stops Miami Chicago O'Hare Intl
$675American Airlines
Sun, Jan 24 - Thu, Jan 28
Delta Logo
6:00 am - 3:11 pmSTL  Lambert-St Louis-UVF Castries Hewanorra
7h 11m1 stop Atlanta Hartsfield-Jackson
Delta Logo
4:31 pm - 11:26 pmUVF  Castries Hewanorra-STL Lambert-St Louis
8h 55m1 stop Atlanta Hartsfield-Jackson
$731Delta
Wed, Jan 6 - Wed, Jan 13
Delta Logo
7:05 pm - 2:00 pmSTL  Lambert-St Louis-UVF Castries Hewanorra
17h 55m1 stop Atlanta Hartsfield-Jackson
Delta Logo
3:20 pm - 11:39 pmUVF  Castries Hewanorra-STL Lambert-St Louis
9h 19m1 stop Atlanta Hartsfield-Jackson
$731Delta
Wed, Mar 31 - Wed, Apr 7
Delta Logo
6:00 am - 3:05 pmSTL  Lambert-St Louis-UVF Castries Hewanorra
7h 05m1 stop Atlanta Hartsfield-Jackson
Delta Logo
4:26 pm - 12:05 amUVF  Castries Hewanorra-STL Lambert-St Louis
9h 39m1 stop Atlanta Hartsfield-Jackson
$731Delta
Mon, Nov 23 - Fri, Dec 4
United Airlines Logo
8:05 am - 2:15 pmSTL  Lambert-St Louis-UVF Castries Hewanorra
28h 10m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
3:21 pm - 10:42 amUVF  Castries Hewanorra-STL Lambert-St Louis
21h 21m2 stops Newark Chicago O'Hare Intl
$963United Airlines
Mon, Dec 21 - Tue, Dec 29
United Airlines Logo
8:05 am - 2:15 pmSTL  Lambert-St Louis-UVF Castries Hewanorra
28h 10m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
3:21 pm - 5:08 pmUVF  Castries Hewanorra-STL Lambert-St Louis
27h 47m2 stops Newark Chicago O'Hare Intl
$963United Airlines
Mon, Dec 21 - Mon, Dec 28
United Airlines Logo
9:35 am - 2:15 pmSTL  Lambert-St Louis-UVF Castries Hewanorra
26h 40m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
3:21 pm - 6:18 pmUVF  Castries Hewanorra-STL Lambert-St Louis
28h 57m2 stops Newark Chicago O'Hare Intl
$1,008United Airlines
Sun, Dec 20 - Mon, Dec 28

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United Airlines flights from St. Louis to Saint Lucia

Our best United Airlines deals on St. Louis to Saint Lucia flight tickets
United Airlines
Dec 21
STL8:05 amLambert-St Louis
28h 10m
2 stops
UVF2:15 pmCastries Hewanorra
Dec 29
UVF3:21 pmCastries Hewanorra
21h 21m
2 stops
STL10:42 amLambert-St Louis
$963
United Airlines
Dec 20
STL9:35 amLambert-St Louis
26h 40m
2 stops
UVF2:15 pmCastries Hewanorra
Dec 29
UVF3:21 pmCastries Hewanorra
21h 21m
2 stops
STL10:42 amLambert-St Louis
$1,008
United Airlines
Dec 24
STL10:45 amLambert-St Louis
25h 30m
2 stops
UVF2:15 pmCastries Hewanorra
Dec 29
UVF3:21 pmCastries Hewanorra
23h 05m
2 stops
STL12:26 pmLambert-St Louis
$1,098

Air Canada flights from St. Louis to Saint Lucia

Our best Air Canada deals on St. Louis to Saint Lucia flight tickets
Air Canada
Dec 13
STL4:05 pmLambert-St Louis
22h 35m
1 stop
UVF4:40 pmCastries Hewanorra
Dec 20
UVF5:35 pmCastries Hewanorra
23h 51m
1 stop
STL3:26 pmLambert-St Louis
$642
Air Canada
Dec 23
STL4:05 pmLambert-St Louis
22h 35m
1 stop
UVF4:40 pmCastries Hewanorra
Dec 28
UVF5:35 pmCastries Hewanorra
23h 51m
1 stop
STL3:26 pmLambert-St Louis
$1,149

momondo Fare Finder

 
Use the filters below to find and compare flights from St. Louis to Saint Lucia that are best for you.

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Price

Cheapest round-trip

St. LouisCastries

STL Lambert-St Louis - UVF Castries Hewanorra

STLUVF

Lambert-St Louis

Sun 12/13

4:05 pm-4:40 pm

1 stop22h 35m

Castries Hewanorra

Sun 12/20

5:35 pm-3:26 pm

1 stop23h 51m

$642

St. LouisCastries

STL Lambert-St Louis - UVF Castries Hewanorra

STLUVF

Lambert-St Louis

Sun 1/24

5:00 am-3:38 pm

1 stop8h 38m

Castries Hewanorra

Thu 1/28

3:46 pm-10:42 pm

1 stop8h 56m

$671

St. LouisCastries

STL Lambert-St Louis - UVF Castries Hewanorra

STLUVF

Lambert-St Louis

Sat 1/23

5:00 pm-2:46 pm

2 stops19h 46m

Castries Hewanorra

Fri 1/29

4:38 pm-11:04 am

2 stops20h 26m

$675

St. LouisCastries

STL Lambert-St Louis - UVF Castries Hewanorra

STLUVF

Lambert-St Louis

Sun 1/24

6:00 pm-2:46 pm

2 stops18h 46m

Castries Hewanorra

Thu 1/28

4:38 pm-10:34 am

2 stops19h 56m

$675
Quickest round-trip

St. LouisCastries

STL Lambert-St Louis - UVF Castries Hewanorra

STLUVF

Lambert-St Louis

Wed 1/6

6:00 am-3:11 pm

1 stop7h 11m

Castries Hewanorra

Wed 1/13

4:31 pm-11:26 pm

1 stop8h 55m

$731

St. LouisCastries

STL Lambert-St Louis - UVF Castries Hewanorra

STLUVF

Lambert-St Louis

Wed 3/31

7:05 pm-2:00 pm

1 stop17h 55m

Castries Hewanorra

Wed 4/7

3:20 pm-11:39 pm

1 stop9h 19m

$731

St. LouisCastries

STL Lambert-St Louis - UVF Castries Hewanorra

STLUVF

Lambert-St Louis

Mon 11/23

6:00 am-3:05 pm

1 stop7h 05m

Castries Hewanorra

Fri 12/4

4:26 pm-12:05 am

1 stop9h 39m

$731

St. LouisCastries

STL Lambert-St Louis - UVF Castries Hewanorra

STLUVF

Lambert-St Louis

Mon 12/21

8:05 am-2:15 pm

2 stops28h 10m

Castries Hewanorra

Tue 12/29

3:21 pm-10:42 am

2 stops21h 21m

$963

St. LouisCastries

STL Lambert-St Louis - UVF Castries Hewanorra

STLUVF

Lambert-St Louis

Mon 12/21

8:05 am-2:15 pm

2 stops28h 10m

Castries Hewanorra

Mon 12/28

3:21 pm-5:08 pm

2 stops27h 47m

$963

St. LouisCastries

STL Lambert-St Louis - UVF Castries Hewanorra

STLUVF

Lambert-St Louis

Sun 12/20

9:35 am-2:15 pm

2 stops26h 40m

Castries Hewanorra

Mon 12/28

3:21 pm-6:18 pm

2 stops28h 57m

$1,008

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Saint Lucia from

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 month to fly to Saint Lucia?

The month of July is, on average, the cheapest month to fly to Saint Lucia from St. Louis, with most prices found around $573. If you aren’t able to travel to Saint Lucia during the month of July, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $790.

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

Best Price Found

$642

Fastest flight time

7h 05m

Direct flights

None
The best flight deal from St. Louis to Saint Lucia found on momondo in the last 72 hours is $642
The fastest flight from St. Louis to Saint Lucia takes 7h 05m
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

Frequently asked questions about flying from St. Louis to Saint Lucia

  • 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?

  • 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
DeltaPriceFrom $630Free CancellationRating
7.8
8,692 reviews
Search Delta flights
American AirlinesPriceFrom $713Free CancellationRating
7.0
12,210 reviews
Search American Airlines flights

Why use momondo?

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.

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