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Castries

$575+ Cheap flights from St. Louis (STL) to Castries (UVF)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/31. Fares are subject to change and may not be available on all flights or dates of travel.
STL — UVF
Nov 19 — Nov 261
Wed 11/19
Wed 11/26
1 adult, Economy
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Cheap 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 October 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$575
(Delta)

Popular in

December

Cheapest in

October

Average price

$581
Provider with most accurate pricing for Lambert-St Louis-Castries Hewanorra flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Castries Hewanorra flights.
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From Lambert-St Louis to Castries Hewanorra
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Highest demand for flights based on searches. 2% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 20, 2025.

This Delta deal was found by Cheapflights users on 10/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:00 amSTL - UVF
1 stop7h 30mDelta
Wed 1/144:24 pmUVF - STL
1 stop18h 40mDelta
Deal found 10/20$575
This Delta deal was found by Cheapflights users on 10/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:00 amSTL - UVF
1 stop7h 30mDelta
Tue 1/134:24 pmUVF - STL
1 stop9h 16mDelta
Deal found 10/20$596
This Delta deal was found by Cheapflights users on 10/18. 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 11/256:00 amSTL - UVF
1 stop7h 39mDelta
Tue 12/24:56 pmUVF - STL
1 stop17h 28mDelta
Deal found 10/18$617
This Delta deal was found by Cheapflights users on 10/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:00 amSTL - UVF
1 stop7h 30mDelta
Thu 1/84:24 pmUVF - STL
1 stop9h 16mDelta
Deal found 10/20$635
This American Airlines deal was found by Cheapflights users on 10/20. 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.
Tue 11/256:20 pmSTL - UVF
1 stop16h 59mAmerican Airlines
Tue 12/24:52 pmUVF - STL
2 stops18h 31mAmerican Airlines
Deal found 10/20$672
This American Airlines deal was found by Cheapflights users on 10/20. 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.
Wed 12/315:05 amSTL - UVF
1 stop8h 49mAmerican Airlines
Fri 1/92:56 pmUVF - STL
1 stop11h 03mAmerican Airlines
Deal found 10/20$685
This American Airlines deal was found by Cheapflights users on 10/20. 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.
Wed 12/315:05 amSTL - UVF
1 stop8h 49mAmerican Airlines
Mon 1/125:02 pmUVF - STL
1 stop8h 57mAmerican Airlines
Deal found 10/20$710
This American Airlines deal was found by Cheapflights users on 10/19. 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.
Mon 11/247:58 pmSTL - UVF
2 stops17h 02mAmerican Airlines
Wed 12/34:53 pmUVF - STL
2 stops19h 44mAmerican Airlines
Deal found 10/19$713
This American Airlines deal was found by Cheapflights users on 10/20. 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.
Wed 12/315:05 amSTL - UVF
1 stop8h 49mAmerican Airlines
Sun 1/115:02 pmUVF - STL
1 stop8h 57mAmerican Airlines
Deal found 10/20$715
This American Airlines deal was found by Cheapflights users on 10/20. 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.
Wed 12/315:05 amSTL - UVF
1 stop8h 49mAmerican Airlines
Sat 1/105:02 pmUVF - STL
1 stop8h 57mAmerican Airlines
Deal found 10/20$770

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 October 20, 2025.
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

Wed 12/31

6:00 am-3:30 pm

1 stop7h 30m

Castries Hewanorra

Wed 1/14

4:24 pm-9:04 am

1 stop18h 40m

$575

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Tue 1/6

6:00 am-3:04 pm

1 stop7h 04m

Castries Hewanorra

Wed 1/14

4:24 pm-11:40 pm

1 stop9h 16m

$575

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Tue 1/6

6:00 am-3:04 pm

1 stop7h 04m

Castries Hewanorra

Tue 1/13

4:24 pm-11:40 pm

1 stop9h 16m

$596

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Wed 12/31

6:00 am-3:30 pm

1 stop7h 30m

Castries Hewanorra

Tue 1/13

4:24 pm-11:40 pm

1 stop9h 16m

$596

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Mon 1/5

6:00 am-3:07 pm

1 stop7h 07m

Castries Hewanorra

Tue 1/13

4:24 pm-11:40 pm

1 stop9h 16m

$596

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Fri 1/2

7:02 pm-1:36 pm

1 stop16h 34m

Castries Hewanorra

Wed 1/14

4:24 pm-9:04 am

1 stop18h 40m

$600

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Thu 1/1

6:00 am-3:30 pm

1 stop7h 30m

Castries Hewanorra

Wed 1/14

4:24 pm-9:04 am

1 stop18h 40m

$600

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Sat 1/3

6:00 pm-1:04 pm

1 stop17h 04m

Castries Hewanorra

Sun 1/11

5:02 pm-9:24 am

2 stops18h 22m

$610

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Mon 11/24

6:00 am-3:39 pm

1 stop7h 39m

Castries Hewanorra

Wed 12/3

4:56 pm-8:24 am

1 stop17h 28m

$617

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

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/20

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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*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, October is the cheapest month in which you can book a flight from St. Louis to Castries (average of $550). Flying from St. Louis to Castries in July is currently the most expensive (average of $674). 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 October 20, 2025.
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
7,978 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,978 reviews
Delta
7.9
Good
7,978 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,024 reviews
Delta
7.9
Good
7,978 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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 Delta fly from St. Louis to Castries in about 7h 30m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 2489 mi.

  • 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 $565 on this airline. An additional option worth looking into is Delta, starting at $565. These flights start at 21% 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, October is the cheapest month in which you can book a flight from St. Louis to Castries (average of $550). Flying from St. Louis to Castries in July is currently the most expensive (average of $674). 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 October 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$565Average$705FlexibilityNo cancel feeOn-time71%
DeltaCheapest$565Average$759FlexibilityNo cancel feeOn-timeN/A

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