$565+ Cheap flights from St. Louis (STL) to Saint Lucia
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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
STL — UVF
Apr 22 — Apr 291
1 adult, Economy
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Find cheap flights from St. Louis to Saint Lucia with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Saint Lucia
Keep the following information in mind while searching for St. Louis to Saint Lucia flight deals. Data was last updated April 17, 2025.
Round-trip from | $676 (American Airlines) |
|---|---|
Popular in | December |
Cheapest in | August |
Average price | $1,209 |
Find flight deals from St. Louis to Saint Lucia
Cheapest flights from St. Louis to Saint LuciaExplore the most affordable flight options available from St. Louis to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.
Explore the most affordable flight options available from St. Louis to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.
This Delta deal was found by Cheapflights users on 4/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/296:00 amSTL - UVF
1 stop7h 15mDelta
Tue 8/53:35 pmUVF - STL
1 stop9h 04mDelta
Deal found 4/17![Delta logo]()
$565
This American Airlines deal was found by Cheapflights users on 4/17. 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.
Tue 10/284:12 pmSTL - UVF
2 stops18h 58mAmerican Airlines
Wed 11/53:05 pmUVF - STL
1 stop9h 56mAmerican Airlines
Deal found 4/17![American Airlines logo]()
$570
This Justfly.com deal was found by Cheapflights users on 4/17. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/34:15 pmSTL - UVF
1 stop21h 45mAir Canada
Fri 11/215:05 pmUVF - STL
1 stop24h 21mAir Canada
Deal found 4/17![Air Canada logo]()
$822
This Orbitz deal was found by Cheapflights users on 4/17. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/44:15 pmSTL - SLU
2 stops15h 15mMultiple Airlines
Sun 11/912:30 pmSLU - STL
3 stops52h 56mMultiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$3,461
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis 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 April 17, 2025.
Use the filters below to find and compare flights from St. Louis to Saint Lucia that are best for you.
Fly from
St. Louis
Fly to
Saint Lucia
Route
Depart
Return
Price
St. LouisCastries
STL - UVF
STLUVF
Lambert-St Louis
Sat 5/10
6:47 pm-2:11 pm
1 stop18h 24m
Castries Hewanorra
Sat 5/17
3:14 pm-8:56 am
1 stop18h 42m
$676
St. LouisCastries
STL - UVF
STLUVF
Lambert-St Louis
Wed 6/25
6:00 am-2:16 pm
1 stop7h 16m
Castries Hewanorra
Tue 7/1
3:36 pm-11:51 pm
1 stop9h 15m
$831
Best time to book a flight from St. Louis to Saint Lucia
Have a flexible travel schedule? Discover the best time to fly to Saint Lucia 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 Saint Lucia
What is the cheapest month to book a flight from St. Louis to Saint Lucia?
Currently, January is the cheapest month in which you can book a flight from St. Louis to Saint Lucia (average of $556). Flying from St. Louis to Saint Lucia 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.
What is the cheapest time of day to fly from STL to LC?
Find hourly flight availability from St. Louis to Saint Lucia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 17, 2025.
When flying from St. Louis to Saint Lucia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Reviews of airlines servicing Saint Lucia
Get insights into the airlines that provide service to Saint Lucia. 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 Saint Lucia. Reviews last updated April 17, 2025.
Crew
8.5
Overall
8.0
Boarding
8.2
Comfort
7.9
Entertainment
7.9
Food
7.3
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Crew
8.5
Overall
8.0
Boarding
8.2
Comfort
7.9
Entertainment
7.9
Food
7.3
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Crew
8.5
Overall
8.0
Boarding
8.2
Comfort
7.9
Entertainment
7.9
Food
7.3
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Saint Lucia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for St. Louis to Saint Lucia
See prices for flight routes from nearby airports that may be better suited for you.
Top 2 airlines flying from St. Louis to Saint Lucia
Discover the top 2 airlines that operate flights from St. Louis 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 April 17, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$444 | Average$640 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$492 | Average$717 | FlexibilityNo cancel fee | On-time71% |