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Cheap Flights from Washington D.C. (IAD) to Castries (UVF)

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      Travellers and cabin class, 1 Adult, Economy

      Compare Washington Dulles 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 Washington Dulles to St Lucia Hewanorra

      Looking for a cheap last-minute deal or the best return flight from Washington Dulles Airport to St Lucia Hewanorra Airport? If you want to travel next month, return fares start from $1,221. Find the lowest prices on one-way and return tickets right here.
      Castries.$841 per passenger.Departing Thu, 14 Jan, returning Mon, 18 Jan.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Washington Dulles on Thu, 14 Jan, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Mon, 18 Jan, arriving in Washington Dulles.Price includes taxes and charges.From $841, select.
      Castries.$843 per passenger.Departing Wed, 7 Oct, returning Wed, 14 Oct.Return flight with American Airlines.Outbound indirect flight with American Airlines, departs from Washington Dulles on Wed, 7 Oct, arriving in St Lucia Hewanorra.Inbound indirect flight with American Airlines, departs from St Lucia Hewanorra on Wed, 14 Oct, arriving in Washington Dulles.Price includes taxes and charges.From $843, select.
      Castries.$911 per passenger.Departing Sun, 6 Dec, returning Fri, 11 Dec.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Washington Dulles on Sun, 6 Dec, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Fri, 11 Dec, arriving in Washington Dulles.Price includes taxes and charges.From $911, select.
      Castries.$960 per passenger.Departing Wed, 30 Sep, returning Wed, 7 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Wed, 30 Sep, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Wed, 7 Oct, arriving in Washington Dulles.Price includes taxes and charges.From $960, select.
      Castries.$961 per passenger.Departing Thu, 29 Oct, returning Mon, 2 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Thu, 29 Oct, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Mon, 2 Nov, arriving in Washington Dulles.Price includes taxes and charges.From $961, select.
      Castries.$962 per passenger.Departing Fri, 27 Nov, returning Wed, 2 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Fri, 27 Nov, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Wed, 2 Dec, arriving in Washington Dulles.Price includes taxes and charges.From $962, select.
      Castries.$968 per passenger.Departing Thu, 17 Sep, returning Thu, 5 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Thu, 17 Sep, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Thu, 5 Nov, arriving in Washington Dulles.Price includes taxes and charges.From $968, select.
      Castries.$1,033 per passenger.Departing Thu, 18 Feb, returning Wed, 24 Feb.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Washington Dulles on Thu, 18 Feb, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Wed, 24 Feb, arriving in Washington Dulles.Price includes taxes and charges.From $1,033, select.
      Castries.$1,088 per passenger.Departing Fri, 6 Nov, returning Tue, 10 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Fri, 6 Nov, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Tue, 10 Nov, arriving in Washington Dulles.Price includes taxes and charges.From $1,088, select.
      Castries.$1,129 per passenger.Departing Tue, 1 Sep, returning Thu, 31 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Tue, 1 Sep, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Thu, 31 Dec, arriving in Washington Dulles.Price includes taxes and charges.From $1,129, select.
      Castries.$1,165 per passenger.Departing Mon, 31 Aug, returning Thu, 31 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Mon, 31 Aug, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Thu, 31 Dec, arriving in Washington Dulles.Price includes taxes and charges.From $1,165, select.
      Castries.$1,221 per passenger.Departing Thu, 17 Sep, returning Mon, 21 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Thu, 17 Sep, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Mon, 21 Sep, arriving in Washington Dulles.Price includes taxes and charges.From $1,221, select.
      Castries.$1,236 per passenger.Departing Sun, 21 Mar, returning Thu, 25 Mar.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Washington Dulles on Sun, 21 Mar, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Thu, 25 Mar, arriving in Washington Dulles.Price includes taxes and charges.From $1,236, select.
      Castries.$1,245 per passenger.Departing Mon, 26 Apr, returning Sat, 1 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Mon, 26 Apr, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Sat, 1 May, arriving in Washington Dulles.Price includes taxes and charges.From $1,245, select.
      Castries.$1,348 per passenger.Departing Tue, 20 Apr, returning Sat, 24 Apr.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Tue, 20 Apr, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Sat, 24 Apr, arriving in Washington Dulles.Price includes taxes and charges.From $1,348, select.
      Castries.$1,365 per passenger.Departing Sat, 29 Aug, returning Mon, 31 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Sat, 29 Aug, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Mon, 31 Aug, arriving in Washington Dulles.Price includes taxes and charges.From $1,365, select.

      Find the cheapest month to fly from Washington Dulles to St Lucia Hewanorra

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington Dulles to St Lucia Hewanorra flights are currently cheapest in January.
      Aug
      from $1,365
      Sep
      from $1,221
      Oct
      from $843
      Nov
      from $1,088
      Dec
      from $911
      Jan
      from $841
      Feb
      from $1,033
      Mar
      from $1,236
      Apr
      from $1,348
      May
      from $1,515
      Jun
      Find prices
      Jul
      Find prices

      Washington Dulles to St Lucia Hewanorra: Alternative routes

      Compare routes from Washington Dulles 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 $1,227
      Search flights

      St Lucia Hewanorra

      30km from central Castries
      Cheapest
      from $841
      Search flights

      Washington D.C. to Castries: Flight information

      The things to know before you go.
      Cheapest flight found$841
      Cheapest month to flyJanuary

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

      The best price we found for a return flight from Washington Dulles to St Lucia Hewanorra is $841. 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 Washington Dulles to St Lucia Hewanorra. But we found flights with one or more stops from $841.
      As of August 2026, there are no flights flying from Washington Dulles to St Lucia Hewanorra.
      The cheapest month to fly from Washington Dulles to St Lucia Hewanorra is usually January.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to St Lucia Hewanorra Airport on Thursday, 14 January 2027.
      No airlines currently offer direct flights between Washington Dulles 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.

      Flying from Washington Dulles Airport (IAD) to St Lucia Hewanorra Airport (UVF): what you need to know

      • Castries is one hour ahead of Washington DC and is in the UTC-4 timezone.

      • Your IAD 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 for international travel.

      • During popular months such as July, you'll want to get to the airport earlier than usual. Plan to arrive two hours before a domestic departure and four hours ahead of international flights whenever you're travelling during peak periods in general.

      • We make it a breeze to book a flight with a stopover. To see all your options for tickets from Washington Dulles Airport to St Lucia Hewanorra Airport, uncheck 'Direct flights only.' Then, pick a flight that has a stop long enough to visit your chosen city. Worthwhile stopovers between IAD and UVF include:

        • Atlanta Hartsfield-Jackson Airport

        • New York Newark Airport

        • Toronto Pearson International Airport

      How to find the cheapest flights from Washington Dulles Airport (IAD) to St Lucia Hewanorra Airport (UVF)

      • The cheapest price we've seen for a one-way Washington Dulles Airport to St Lucia Hewanorra Airport flight is $335. A return fare right now is $841. Depending on the availability when you book, these fares may change.

      • Don't leave things to the last moment. You're more likely to get cheap tickets from IAD to UVF if you book in advance. Airlines often offer some excellent early bird deals.

      • If you can be flexible with your travel plans, try using the 'Whole month' tool. It'll give you the lowest price in every month when looking for a flight from Washington Dulles Airport to St Lucia Hewanorra Airport.

      • There's no need to check every day to see if fares have dropped when you create a Price Alert. We'll send you an update as soon as there's a better deal on cheap flights from IAD to UVF.

      • Tailor your trip using filters. Select your departure and arrival times, airlines and total journey duration. You can also sort your results by 'Cheapest,' 'Best' or 'Fastest' flights from Washington Dulles Airport to St Lucia Hewanorra Airport.

      Handy information about Washington Dulles Airport (IAD)

      • You'll find IAD at 1 Saarinen Circle.

      • When it comes to the on-time performance of Washington Dulles Airport, 77% of flights arrive within the scheduled timeframe.

      • To get to Washington Dulles Airport from central Washington DC, it takes about 45 minutes if you're planning to drive. This depends on traffic though. It's approximately 40 kilometres from the airport to the city centre.

      • The journey when using public transport typically takes 1 hour 10 minutes.

      • Catching an early flight from Washington Dulles Airport to St Lucia Hewanorra Airport? Avoid the hassle of rushing to the airport (and catch some extra z's) by choosing one of these hotels near IAD:

      Arriving at St Lucia Hewanorra Airport (UVF)

      • Consider booking a hotel close to UVF if you have a late Washington Dulles Airport to St Lucia Hewanorra Airport flight. Settle into one of these accommodation options and skip the long transfer:

      • Pick up a St Lucia Hewanorra Airport rental car and discover Castries and beyond with your own set of wheels. Drive A Matic, Sixt and Final Homes are popular outlets you can book with here.

      • To secure the lowest price, reserve your ride from St Lucia Hewanorra Airport about one week ahead.

      Getting from St Lucia Hewanorra Airport (UVF) to central Castries

      • From St Lucia Hewanorra Airport, Castries is approximately 72 kilometres away. It takes around 1 hour 30 minutes to drive to the centre.

      • Travelling to the centre by public transport takes about 2 hours.

      When to fly to St Lucia Hewanorra Airport (UVF)

      • December is the most popular month for flights from Washington Dulles Airport to St Lucia Hewanorra Airport. To steer clear of the crowds, visit Castries in September.

      • When booking your flight from Washington Dulles Airport to St Lucia Hewanorra Airport, think about the kind of weather you like. September is the warmest month in Castries, with the temperature ranging from 26ºC (79ºF) to 30ºC (86ºF).

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

      Explore more of Saint Lucia

      • Vieux Fort is just one of the many cities in Saint Lucia waiting to be explored once you've taken in the sights of Castries. Around 32 kilometres away to the south, its top attractions include Anse Des Sables Beach, Sandy Beach and Maria Islands Nature Reserve.

      Plan smart, explore more

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      Plan the rest of your trip from Washington D.C. to Castries

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