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Castries

$396+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — UVF
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$600
(Delta)

Popular in

June

Cheapest in

October

Average price

$665
From Lambert-St Louis to Castries Hewanorra
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Highest demand for flights based on searches. 9% potential increase in price ($79 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 September 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 September 15, 2025.

This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/154:05 pmSTL - UVF
1 stop21h 10mAir Canada
Tue 9/233:10 pmUVF - STL
1 stop25h 08mAir Canada
Deal found 9/14$396
This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/151:30 pmSTL - UVF
2 stops23h 45mMultiple Airlines
Tue 9/233:10 pmUVF - STL
3 stops26h 25mMultiple Airlines
Deal found 9/14$584
This American Airlines deal was found by Cheapflights users on 9/14. 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 12/24:05 pmUVF - STL
1 stop9h 02mAmerican Airlines
Deal found 9/14$625
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/294:45 pmSTL - UVF
2 stops19h 20mAmerican Airlines
Wed 11/54:52 pmUVF - STL
2 stops21h 45mAmerican Airlines
Deal found 9/14$626
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Sun 10/265:30 amSTL - UVF
1 stop7h 10mAmerican Airlines
Sun 11/24:04 pmUVF - STL
1 stop10h 01mAmerican Airlines
Deal found 9/14$647
This American Airlines deal was found by Cheapflights users on 9/15. 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 12/305:00 amSTL - UVF
1 stop7h 52mAmerican Airlines
Mon 1/53:53 pmUVF - STL
1 stop10h 02mAmerican Airlines
Deal found 9/15$700

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 September 15, 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

Thu 2/5

6:00 am-3:04 pm

1 stop7h 04m

Castries Hewanorra

Tue 2/10

4:24 pm-11:40 pm

1 stop9h 16m

$600

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Thu 2/5

5:02 pm-2:25 pm

2 stops19h 23m

Castries Hewanorra

Tue 2/10

3:35 pm-8:14 am

2 stops18h 39m

$605

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Mon 2/16

5:24 am-2:15 pm

1 stop6h 51m

Castries Hewanorra

Mon 2/23

5:00 pm-8:06 am

1 stop17h 06m

$612

St. LouisCastries

STL - UVF

STLUVF

Lambert-St Louis

Wed 2/18

5:19 am-2:35 pm

1 stop7h 16m

Castries Hewanorra

Mon 2/23

5:00 pm-8:06 am

1 stop17h 06m

$612

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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.

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 September 15, 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
7,954 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

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
7,954 reviews
Delta
8.0
Very good
7,954 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

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
7,954 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

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.

  • How long is the flight from St. Louis to Castries?

    Airlines like Delta and American Airlines fly from St. Louis to Castries in about 7h 04m. The time it takes to get you to your destination can typically vary by up to 12h 19m. 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 $565 on this airline. An additional option worth looking into is Delta, starting at $565. 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, 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

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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$565Average$705FlexibilityNo cancel feeOn-time71%
DeltaCheapest$565Average$775FlexibilityNo cancel feeOn-timeN/A

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