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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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — UVF
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
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 August 14, 2025.

Round-trip from

$575
(American Airlines)

Popular in

June

Cheapest in

September

Average price

$691
From Lambert-St Louis to Castries Hewanorra
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Highest demand for flights based on searches. 7% potential increase in price ($60 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 14, 2025.

This American Airlines deal was found by Cheapflights users on 8/13. 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 10/135:23 amSTL - UVF
1 stop8h 37mAmerican Airlines
Thu 10/232:56 pmUVF - STL
1 stop10h 00mAmerican Airlines
Deal found 8/13$575
This American Airlines deal was found by Cheapflights users on 8/14. 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.
Fri 12/55:28 amSTL - UVF
1 stop6h 52mAmerican Airlines
Fri 12/125:05 pmUVF - STL
1 stop8h 29mAmerican Airlines
Deal found 8/14$600
This American Airlines deal was found by Cheapflights users on 8/14. 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 10/295:53 pmSTL - UVF
2 stops18h 12mAmerican Airlines
Tue 11/44:50 pmUVF - STL
2 stops19h 47mAmerican Airlines
Deal found 8/14$605
This American Airlines deal was found by Cheapflights users on 8/13. 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 9/132:11 pmSTL - UVF
2 stops23h 06mAmerican Airlines
Thu 9/183:17 pmUVF - STL
2 stops19h 24mAmerican Airlines
Deal found 8/13$622
This American Airlines deal was found by Cheapflights users on 8/14. 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 11/256:45 pmSTL - UVF
1 stop18h 15mAmerican Airlines
Tue 12/22:28 pmUVF - STL
1 stop10h 04mAmerican Airlines
Deal found 8/14$625
This American Airlines deal was found by Cheapflights users on 8/14. 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.
Thu 10/26:00 pmSTL - UVF
2 stops19h 17mAmerican Airlines
Thu 10/92:56 pmUVF - STL
2 stops18h 20mAmerican Airlines
Deal found 8/14$626
This American Airlines deal was found by Cheapflights users on 8/14. 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.
Thu 9/115:28 amSTL - UVF
1 stop7h 49mAmerican Airlines
Thu 9/183:17 pmUVF - STL
1 stop9h 42mAmerican Airlines
Deal found 8/14$642

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 August 14, 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

Mon 10/13

5:23 am-3:00 pm

1 stop8h 37m

Castries Hewanorra

Thu 10/23

2:56 pm-11:56 pm

1 stop10h 00m

$575

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Mon 2/2

6:00 am-3:04 pm

1 stop7h 04m

Castries Hewanorra

Mon 2/9

4:24 pm-11:40 pm

1 stop9h 16m

$600

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Fri 12/5

5:28 am-2:20 pm

1 stop6h 52m

Castries Hewanorra

Fri 12/12

5:05 pm-11:34 pm

1 stop8h 29m

$600

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Thu 1/15

7:01 pm-2:30 pm

2 stops17h 29m

Castries Hewanorra

Thu 1/22

5:10 pm-9:57 am

2 stops18h 47m

$605

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Wed 10/29

5:09 pm-3:00 pm

2 stops20h 51m

Castries Hewanorra

Tue 11/4

4:50 pm-9:35 am

2 stops18h 45m

$605

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Mon 2/2

7:01 pm-3:50 pm

2 stops18h 49m

Castries Hewanorra

Mon 2/9

5:10 pm-8:14 am

1 stop17h 04m

$605

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

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, January is the cheapest month in which you can book a flight from St. Louis to Castries (average of $556). Flying from St. Louis to Castries in December is currently the most expensive (average of $730). 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 August 14, 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
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • 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 $548 on this airline. An additional option worth looking into is Delta, starting at $565. These flights start at 26% 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, January is the cheapest month in which you can book a flight from St. Louis to Castries (average of $556). Flying from St. Louis to Castries in December is currently the most expensive (average of $730). 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$548Average$727FlexibilityNo cancel feeOn-time71%
DeltaCheapest$565Average$790FlexibilityNo cancel feeOn-timeN/A

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