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545 € Cheap Flights from St Louis to St Lucia Hewanorra

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      Travellers and cabin class, 1 Adult, Economy

      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 Airport to St Lucia Hewanorra Airport? If you want to travel next month, return fares start from 663 €. Find the lowest prices on one-way and return tickets right here.
      Castries.545 € per passenger.Departing Wed, 25 Nov, returning Mon, 30 Nov.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from St Louis on Wed, 25 Nov, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Mon, 30 Nov, arriving in St Louis.Price includes taxes and charges.From 545 €, select.
      Castries.545 € per passenger.Departing Sat, 5 Dec, returning Sun, 13 Dec.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from St Louis on Sat, 5 Dec, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Sun, 13 Dec, arriving in St Louis.Price includes taxes and charges.From 545 €, select.
      Castries.631 € per passenger.Departing Sun, 25 Oct, returning Thu, 29 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from St Louis on Sun, 25 Oct, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Thu, 29 Oct, arriving in St Louis.Price includes taxes and charges.From 631 €, select.
      Castries.663 € per passenger.Departing Fri, 18 Sep, returning Thu, 24 Sep.Return flight with Frontier Airlines and jetBlue.Outbound indirect flight with Frontier Airlines, departs from St Louis on Fri, 18 Sep, arriving in St Lucia Hewanorra.Inbound indirect flight with jetBlue, departs from St Lucia Hewanorra on Thu, 24 Sep, arriving in St Louis.Price includes taxes and charges.From 663 €, select.
      Castries.676 € per passenger.Departing Sun, 27 Sep, returning Thu, 1 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from St Louis on Sun, 27 Sep, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Thu, 1 Oct, arriving in St Louis.Price includes taxes and charges.From 676 €, select.
      Castries.719 € per passenger.Departing Wed, 10 Feb, returning Thu, 18 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from St Louis on Wed, 10 Feb, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Thu, 18 Feb, arriving in St Louis.Price includes taxes and charges.From 719 €, select.
      Castries.1.036 € per passenger.Departing Tue, 8 Jun, returning Sat, 12 Jun.Return flight with Delta.Outbound indirect flight with Delta, departs from St Louis on Tue, 8 Jun, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Sat, 12 Jun, arriving in St Louis.Price includes taxes and charges.From 1.036 €, select.

      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 November.
      Aug
      Find prices
      Sep
      from 663 €
      Oct
      from 631 €
      Nov
      from 545 €
      Dec
      from 545 €
      Jan
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      Feb
      from 719 €
      Mar
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      Apr
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      May
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      Jun
      from 1.036 €
      Jul
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      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 Lucia Vigie

      1km from central Castries
      Closest
      from 732 €
      Search flights

      St Lucia Hewanorra

      30km from central Castries
      Cheapest
      from 545 €
      Search flights

      St Louis to Castries: Flight information

      The things to know before you go.
      Cheapest flight found545 €
      Cheapest month to flyNovember

      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 545 €. 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 545 €.
      As of August 2026, 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 November.
      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 Wednesday, 25 November 2026.
      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, Air Canada offers the cheapest flight tickets to St Lucia Hewanorra.

      Travelling from St Louis Airport (STL) to St Lucia Hewanorra Airport (UVF): what you need to know

      • Castries's timezone is UTC-4, making Castries two hours ahead of St Louis.

      • To ensure you catch your STL to UVF flight, leave enough time for things like baggage drop and finding your gate. Turning up two hours before international departures and an hour before domestic flights is the standard rule.

      • You can expect bigger queues in popular months such as July. Arriving up to four hours in advance for an international flight and two hours for domestic departures will help ensure a smooth travel experience.

      • We make it a piece of cake to book a flight with a stopover. To see your options for tickets from St Louis Airport to St Lucia Hewanorra Airport, deselect 'Direct flights only.' Then, pick a flight with a stop long enough to explore the city of your choice. Worthwhile stopovers between STL and UVF include:

        • Chicago O'Hare International Airport

        • Atlanta Hartsfield-Jackson Airport

        • Miami International Airport

      How to find the cheapest flights from St Louis Airport (STL) to St Lucia Hewanorra Airport (UVF)

      • Currently, 337 € is the lowest price we've found for a one-way St Louis Airport to St Lucia Hewanorra Airport flight. The best price for a return ticket is 545 €. Remember that fares could change due to demand at the time of booking.

      • To score cheap tickets from STL to UVF, book early. Airlines typically offer their best fares when flights are first released.

      • Getting cheap flights from St Louis Airport to St Lucia Hewanorra Airport is easier if you're flexible with your dates. Use the 'Whole month' function to see the best prices across every month and snap up a great deal.

      • There's no need to check every day to see if fares have gone down when you set up a Price Alert. We'll send you an update the moment there's a better deal on cheap flights from STL to UVF.

      • Secure the perfect flight for you by using the filters. To see the 'Cheapest,' 'Best' or 'Fastest' flights from St Louis Airport to St Lucia Hewanorra Airport, use the 'Sort by' function. You can also filter by arrival and departure times, airline, and journey duration.

      Handy information about St Louis Airport (STL)

      Arriving at St Lucia Hewanorra Airport (UVF)

      • Reserve a hotel near UVF if you're taking a late St Louis Airport to St Lucia Hewanorra Airport flight. Settle into one of these accommodation options and make your arrival easier:

      • Get on the fast track to adventure by picking up a St Lucia Hewanorra Airport rental car. Grab your wheels from Drive A Matic, Sixt or Final Rentals and explore beyond Castries's usual tourist stops.

      • Lock in the best possible rate by reserving your ride from St Lucia Hewanorra Airport about one week ahead of your trip.

      When to fly to St Lucia Hewanorra Airport (UVF)

      • The quietest month for a flight from St Louis Airport to St Lucia Hewanorra Airport is September, while December is the most popular. Choose the ideal time to go to Castries based on whether you prefer a more fast-paced or easygoing experience.

      • When reserving your flight from St Louis Airport to St Lucia Hewanorra Airport, think about the type of weather you enjoy. September is the warmest month in Castries, with the temperature ranging from 26ºC (79ºF) to 30ºC (86ºF).

      • Look for cheap tickets from STL to UVF in February if you like cooler conditions. Temperatures are at their lowest around then, ranging between 24ºC (75ºF) and 28ºC (82ºF) on average.

      Explore more of Saint Lucia

      • You've visited Castries, now it's time to explore other corners of Saint Lucia. Journey around 32 kilometres south to Vieux Fort to tick off its popular sights. From Anse Des Sables Beach to Sandy Beach and Maria Islands Nature Reserve, you've got a jam-packed schedule ahead.

      Plan the rest of your trip from St Louis to Castries

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.