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$343+ Cheap flights from Missouri to Saint Lucia

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — UVF
Jan 10 — Jan 171
Sat 1/10
Sat 1/17
1 adult, Economy
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Cheap flight deals from Missouri to Saint Lucia

Cheapest flights from Missouri to Saint Lucia
Explore the most affordable flight options available from Missouri to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 11, 2025.

This American Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/294:53 pmSTL - UVF
2 stops19h 59mAmerican Airlines
Sat 1/31:38 pmUVF - STL
2 stops12h 18mAmerican Airlines
Deal found 12/10$3,082
This Delta deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:00 amSTL - UVF
1 stop7h 30mDelta
Sat 1/33:00 pmUVF - STL
1 stop8h 43mDelta
Deal found 12/10$3,174

Find flight deals from Missouri to Saint Lucia

Keep the following information in mind while searching for Missouri to Saint Lucia flight deals. Data was last updated December 11, 2025.

Round-trip from

$552
(Air Canada)

One-way from

$343
(American Airlines)

Popular in

June

Cheapest in

July

Average price

$833
From Missouri to Saint Lucia
Search Deals
One-way flight from Missouri to Saint Lucia
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($245 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($78 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Saint Lucia 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, Cheapflights users made 2,558,603 searches. Data last updated December 11, 2025.
Use the filters below to find and compare flights from Missouri to Saint Lucia that are best for you.

Fly from

Missouri

Fly to

Saint Lucia

Route

Depart

Return

Price

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Tue 2/3

4:05 pm-4:20 pm

1 stop22h 15m

Castries Hewanorra

Wed 2/11

5:15 pm-3:29 pm

1 stop24h 14m

$552

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Mon 2/2

6:57 pm-3:05 pm

1 stop18h 08m

Castries Hewanorra

Wed 2/11

4:25 pm-11:37 pm

1 stop9h 12m

$575

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Sat 2/7

5:04 pm-1:46 pm

2 stops18h 42m

Castries Hewanorra

Fri 2/13

3:50 pm-8:32 am

2 stops18h 42m

$580

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Sun 2/1

6:57 pm-3:05 pm

1 stop18h 08m

Castries Hewanorra

Sun 2/8

4:25 pm-8:53 am

1 stop18h 28m

$600

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Mon 2/2

5:05 am-4:02 pm

1 stop8h 57m

Castries Hewanorra

Mon 2/9

2:46 pm-11:59 pm

1 stop11h 13m

$600

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Sun 2/1

6:57 pm-3:05 pm

1 stop18h 08m

Castries Hewanorra

Mon 2/9

4:25 pm-11:37 pm

1 stop9h 12m

$600

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Mon 2/16

5:05 am-2:50 pm

1 stop7h 45m

Castries Hewanorra

Mon 2/23

4:25 pm-9:43 am

1 stop19h 18m

$600

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Mon 2/2

6:00 am-3:05 pm

1 stop7h 05m

Castries Hewanorra

Sun 2/8

4:25 pm-8:53 am

1 stop18h 28m

$600

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Tue 2/3

6:00 am-3:05 pm

1 stop7h 05m

Castries Hewanorra

Sun 2/8

4:25 pm-8:53 am

1 stop18h 28m

$600

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Tue 2/3

6:00 am-3:05 pm

1 stop7h 05m

Castries Hewanorra

Mon 2/9

4:25 pm-8:53 am

1 stop18h 28m

$600

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 18 results
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Best time to book a flight from Missouri to Saint Lucia

Have a flexible travel schedule? Discover the best time to fly to Saint Lucia from Missouri with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Missouri to Saint Lucia

What is the cheapest month to book a flight from Missouri to Saint Lucia?

Currently, January is the cheapest month in which you can book a flight from Missouri to Saint Lucia (average of $549). Flying from Missouri to Saint Lucia in July is currently the most expensive (average of $668). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Missouri to Saint Lucia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Missouri to Saint Lucia?

    For as low as $575, Air Canada can have you in Saint Lucia from Missouri in 18h 08m. There are 2489 mi between Missouri and Saint Lucia. This flight may include one or multiple stops.

  • Can I find deals for flights from Missouri to Saint Lucia that include hotel bookings?

    Yes. In addition to deals on Missouri to Saint Lucia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Missouri to Saint Lucia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Missouri to Saint Lucia.

  • Can I find deals for business class flights from Missouri to Saint Lucia?

    Yes. Cheapflights offers flight deals from Missouri to Saint Lucia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Missouri to Saint Lucia?

    Currently, January is the cheapest month in which you can book a flight from Missouri to Saint Lucia (average of $549). Flying from Missouri to Saint Lucia in July is currently the most expensive (average of $668). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Missouri to Saint Lucia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Missouri to Saint Lucia

Discover the top 2 airlines that operate flights from Missouri to Saint Lucia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$565Average$776FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$568Average$791FlexibilityNo cancel feeOn-time71%

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