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Castries

$344+ Cheap flights from St. Louis (STL) to Castries (UVF)

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 3/22. Fares are subject to change and may not be available on all flights or dates of travel.
STL — UVF
Mar 22 — Mar 291
Sun 3/22
Sun 3/29
1 adult, Economy
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Cheap flight deals from St. Louis to Castries

Cheapest flights from St. Louis to Castries
Explore the most affordable flight options available from St. Louis to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2026.

This FlightHub deal was found by Cheapflights users on 2/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/217:30 am
STL
-
UVF
1 stop29h 35m
Air Canada
Tue 5/263:15 pm
UVF
-
STL
1 stop21h 51m
Air Canada
Deal found 2/19$617
This American Airlines deal was found by Cheapflights users on 2/20. 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 8/105:27 am
STL
-
UVF
1 stop7h 48m
American Airlines
Tue 8/183:15 pm
UVF
-
STL
1 stop17h 49m
American Airlines
Deal found 2/20$650
This Delta deal was found by Cheapflights users on 2/18. 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.
Tue 3/246:00 am
STL
-
UVF
1 stop6h 58m
Delta
Tue 3/313:18 pm
UVF
-
STL
1 stop9h 40m
Delta
Deal found 2/18$668
This American Airlines deal was found by Cheapflights users on 2/18. 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.
Tue 3/245:15 am
STL
-
UVF
1 stop8h 43m
American Airlines
Tue 3/313:58 pm
UVF
-
STL
2 stops17h 57m
American Airlines
Deal found 2/18$673
This American Airlines deal was found by Cheapflights users on 2/18. 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.
Wed 9/235:33 am
STL
-
UVF
1 stop7h 17m
American Airlines
Mon 9/284:00 pm
UVF
-
STL
1 stop8h 12m
American Airlines
Deal found 2/18$675
This American Airlines deal was found by Cheapflights users on 2/17. 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.
Sat 8/295:52 pm
STL
-
UVF
2 stops19h 23m
American Airlines
Sat 9/53:15 pm
UVF
-
STL
1 stop17h 49m
American Airlines
Deal found 2/17$680
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Sat 11/76:45 pm
STL
-
UVF
1 stop18h 15m
American Airlines
Sat 11/144:50 pm
UVF
-
STL
2 stops18h 26m
American Airlines
Deal found 2/19$689

Find flight deals from St. Louis to Castries

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Castries (UVF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$617
(FlightHub)

One-way from

$344
(American Airlines)

Popular in

June

Cheapest in

October

Average price

$775
Provider with most accurate pricing for Lambert-St Louis-Castries Hewanorra flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Castries Hewanorra flights.
Search Deals
From Lambert-St Louis to Castries Hewanorra
Search Deals
One-way flight from Lambert-St Louis to Castries Hewanorra
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($104 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Castries 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 February 20, 2026.
Use the filters below to find and compare flights from St. Louis to Castries that are best for you.

Fly from

St. Louis

Fly to

Castries

Route

Depart

Return

Price

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Thu 5/21

7:30 am-2:05 pm

1 stop29h 35m

Castries Hewanorra

Tue 5/26

3:15 pm-12:06 pm

1 stop21h 51m

$617

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Tue 3/24

6:00 am-1:58 pm

1 stop6h 58m

Castries Hewanorra

Tue 3/31

3:18 pm-11:58 pm

1 stop9h 40m

$668

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Tue 3/24

5:15 am-2:58 pm

1 stop8h 43m

Castries Hewanorra

Tue 3/31

3:58 pm-8:55 am

2 stops17h 57m

$673

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Sat 5/9

6:53 pm-2:26 pm

1 stop18h 33m

Castries Hewanorra

Fri 5/15

3:28 pm-8:30 am

1 stop18h 02m

$699

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Sun 3/22

6:20 pm-2:58 pm

1 stop19h 38m

$344

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Sun 3/22

4:51 pm-1:46 pm

3 stops43h 55m

$411

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Sat 3/28

4:13 pm-1:48 pm

2 stops20h 35m

$997

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/16

Compare providers for flights from St. Louis to Castries

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Castries in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Castries flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Castries flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Castries flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Castries flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Castries flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Castries

Have a flexible travel schedule? Discover the best time to fly to Castries from St. Louis 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 St. Louis to Castries

What is the cheapest month to book a flight from St. Louis to Castries?

Currently, December is the cheapest month in which you can book a flight from St. Louis to Castries (average of $565). Flying from St. Louis to Castries in June is currently the most expensive (average of $715). 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.

How much does it cost to fly round-trip from St. Louis to Castries?

Reviews of airlines servicing Castries

Get insights into the airlines that provide service to Castries. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Castries. Reviews last updated February 20, 2026.
Peruse reviews from past customers who have flown with Delta and American Airlines from St. Louis to Castries to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,215 reviews

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,215 reviews
Delta
7.9
Good
8,215 reviews

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,321 reviews
Delta
7.9
Good
8,215 reviews

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Castries. 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 St. Louis to Castries?

    Airlines like Air Canada, Delta, and American Airlines fly from St. Louis to Castries in about 6h 58m. The time it takes to get you to your destination can typically vary by up to 22h 37m. Airlines will cover a distance of 2489 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from St. Louis to Castries round-trip?

    Our cheapest airline available from St. Louis to Castries is American Airlines. Our recent data shows that you can find tickets from as low as $575 on this airline. An additional option worth looking into is Delta, starting at $575. These flights start at 22% lower than the current average price 3 months from now.

  • Can I find deals for flights from St. Louis to Castries that include hotel bookings?

    Yes. In addition to deals on St. Louis to Castries flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Castries?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Castries.

  • Can I find deals for business class flights from St. Louis to Castries?

    Yes. Cheapflights offers flight deals from St. Louis to Castries 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 St. Louis to Castries?

    Currently, December is the cheapest month in which you can book a flight from St. Louis to Castries (average of $565). Flying from St. Louis to Castries in June is currently the most expensive (average of $715). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for St. Louis to Castries

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Castries flights

Top 2 airlines flying from St. Louis to Castries

Discover the top 2 airlines that operate flights from St. Louis to Castries. 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 February 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$575Average$722FlexibilityNo cancel feeOn-time71%
DeltaCheapest$575Average$745FlexibilityNo cancel feeOn-timeN/A

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