Cheap Flights from St Louis (STL) to Castries (UVF)

Compare St Louis to St Lucia Hewanorra flight deals

Find the cheapest month or even day of the year to fly to St Lucia Hewanorra

Book the best St Lucia Hewanorra fare with no extra fees

Flight deals from St Louis to St Lucia Hewanorra

Looking for a cheap last-minute deal or the best return flight from St Louis to St Lucia Hewanorra? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from St Louis to St Lucia Hewanorra

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to St Lucia Hewanorra flights are currently cheapest in September.

St Louis to St Lucia Hewanorra: Alternative routes

Compare routes from St Louis to Castries below. You may find an airport to fly into that's cheaper, faster, or easier than St Lucia Hewanorra.

St Louis to Castries: Flight information

The things to know before you go.
Cheapest flight found$876
Cheapest month to flySeptember

Finding cheap flights from St Louis to St Lucia Hewanorra: Frequently asked questions

The best price we found for a return flight from St Louis to St Lucia Hewanorra is $876. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from St Louis to St Lucia Hewanorra. But we found flights with one or more stops from $876.
As of July 2025, there are no flights flying from St Louis to St Lucia Hewanorra.
The cheapest month to fly from St Louis to St Lucia Hewanorra is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to St Lucia Hewanorra Airport on Sunday, 7 September 2025.
No airlines currently offer direct flights between St Louis Airport and St Lucia Hewanorra Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to St Lucia Hewanorra but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Castries is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Delta offers the cheapest flight tickets to St Lucia Hewanorra.

Flying from Lambert-St. Louis International Airport (STL) to Hewanorra Airport (UVF): what you need to know

  • Castries's timezone is UTC-4, which makes Castries one hour ahead of St Louis.

  • Your STL to UVF flight won't wait if you're late, so show up at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're travelling internationally.

  • During popular months like July, it's best to get to the airport earlier. Arrive two hours before a domestic departure and four hours ahead of an international flight whenever you're flying during a high season in general.

  • Consider adding a stopover when booking your ticket from Lambert-St. Louis International Airport to Hewanorra Airport. Simply deselect 'Direct flights only' to break up your trip, or visit a new city along the way. Here are some options between STL and UVF:

    • Hartsfield-Jackson Atlanta International Airport

    • O'Hare International Airport

    • Miami International Airport

How to find the cheapest flights from Lambert-St. Louis International Airport (STL) to Hewanorra Airport (UVF)

  • $453 is the best price for a one-way Lambert-St. Louis International Airport to Hewanorra Airport flight. A return flight starts at $876. These prices may change depending on demand.

  • It's a good idea to book early if you want to get cheap tickets from STL to UVF. That's because airlines change prices based on demand, which tends to rise closer to departure.

  • The 'Whole month' search function shows you the cheapest flights from Lambert-St. Louis International Airport to Hewanorra Airport across the entire month. It's a good way to snap up a bargain if your trip dates are flexible.

  • Picking up cheap flights from STL to UVF is a cinch with Price Alerts. Simply create one of these automatic alerts and we'll notify you as soon as a lower fare pops up.

  • Secure the ideal flight for you with the help of the filters. To see the 'Best,' 'Fastest' or 'Cheapest' flights from Lambert-St. Louis International Airport to Hewanorra Airport, use the 'Sort by' tool. You can also filter by airline, arrival and departure times, and journey duration.

Handy information about Lambert-St. Louis International Airport (STL)

Arriving at Hewanorra Airport (UVF)

  • If you're coming in on a late Lambert-St. Louis International Airport to Hewanorra Airport flight, nothing beats the convenience of staying close to the terminal. Collect your bags from the carousel and then be showered and relaxing shortly after at one of these accommodation options near UVF:

  • Say yes to new adventures by picking up a Hewanorra Airport rental car. Grab your wheels from Drive A Matic, Sixt or Final Rentals to explore Castries and beyond.

  • For the best deal, book your ride from Hewanorra Airport around one week before travelling.

Getting from Hewanorra Airport (UVF) to central Castries

  • Hewanorra Airport to central Castries has a drive time of around 1 hour 10 minutes. It's approximately 56 kilometres away.

When to fly to Hewanorra Airport (UVF)

  • March is the busiest month for flights from Lambert-St. Louis International Airport to Hewanorra Airport. To skip the crowds, visit Castries in May.

  • The warmest month in Castries is September, with temperatures ranging between 26ºC (79ºF) and 30ºC (86ºF). Lock in your flights from Lambert-St. Louis International Airport to Hewanorra Airport in this month if this is the type of weather you enjoy.

  • February has average temperatures of between 24ºC (75ºF) and 28ºC (82ºF). Search for cheap tickets from STL to UVF sometime around then if you like cooler conditions.

Explore more of Saint Lucia

  • Vieux Fort is just one of the many places in Saint Lucia waiting to be discovered after you've seen Castries. Around 32 kilometres away to the south, well-known attractions include Maria Islands Museum, Anse Des Sables Beach and YoungFaith Park.

  • Time for another stop? Journey to Micoud. It's roughly 24 kilometres south-east of Castries and is known for highlights including Josephine Splash Park and Ti Rocher Community Park.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.