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388 € Cheap Flights from Washington Ronald Reagan to Castries

Compare Washington Ronald Reagan to Castries flight deals

Find the cheapest month or even day of the year to fly to Castries

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Flight deals from Washington Ronald Reagan to Castries

Looking for a cheap last-minute deal or the best return flight from Washington Ronald Reagan to Castries? Find the lowest prices on one-way and return tickets right here.
Castries.388 € per passenger.Departing Thu, 4 Jun, returning Tue, 9 Jun.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Washington Ronald Reagan on Thu, 4 Jun, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Tue, 9 Jun, arriving in Washington Ronald Reagan.Price includes taxes and charges.From 388 €, select.
Castries.465 € per passenger.Departing Wed, 1 Apr, returning Mon, 6 Apr.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Washington Ronald Reagan on Wed, 1 Apr, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Mon, 6 Apr, arriving in Washington Ronald Reagan.Price includes taxes and charges.From 465 €, select.
Castries.466 € per passenger.Departing Mon, 9 Mar, returning Thu, 12 Mar.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Washington Ronald Reagan on Mon, 9 Mar, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Thu, 12 Mar, arriving in Washington Ronald Reagan.Price includes taxes and charges.From 466 €, select.
Castries.470 € per passenger.Departing Thu, 30 Apr, returning Tue, 5 May.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Washington Ronald Reagan on Thu, 30 Apr, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Tue, 5 May, arriving in Washington Ronald Reagan.Price includes taxes and charges.From 470 €, select.
Castries.524 € per passenger.Departing Mon, 30 Mar, returning Thu, 2 Apr.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Washington Ronald Reagan on Mon, 30 Mar, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Thu, 2 Apr, arriving in Washington Ronald Reagan.Price includes taxes and charges.From 524 €, select.
Castries.607 € per passenger.Departing Thu, 21 May, returning Tue, 26 May.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Washington Ronald Reagan on Thu, 21 May, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Tue, 26 May, arriving in Washington Ronald Reagan.Price includes taxes and charges.From 607 €, select.
Castries.679 € per passenger.Departing Thu, 2 Jul, returning Fri, 31 Jul.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Washington Ronald Reagan on Thu, 2 Jul, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Fri, 31 Jul, arriving in Washington Ronald Reagan.Price includes taxes and charges.From 679 €, select.
Castries.688 € per passenger.Departing Thu, 29 Oct, returning Wed, 4 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Ronald Reagan on Thu, 29 Oct, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Wed, 4 Nov, arriving in Washington Ronald Reagan.Price includes taxes and charges.From 688 €, select.

Find the cheapest month to fly from Washington Ronald Reagan to Castries

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington Ronald Reagan to Castries flights are currently cheapest in June.
Feb
Find prices
Mar
from 466 €
Apr
from 465 €
May
from 607 €
Jun
from 388 €
Jul
from 679 €
Aug
from 708 €
Sep
from 824 €
Oct
Find prices
Nov
from 796 €
Dec
from 889 €
Jan
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Alternative Washington Ronald Reagan to Castries routes

Looking for the cheapest, fastest or easiest route from Washington Ronald Reagan to Castries? You could fly into the following airports instead.

St Lucia Vigie

1km from central Castries
Closest
from 852 €
Search flights

St Lucia Hewanorra

31km from central Castries
Cheapest
from 388 €
Search flights

Washington D.C. to Castries: Flight information

The things to know before you go.
Cheapest flight found388 €
Cheapest month to flyJune

Finding cheap flights from Washington Ronald Reagan to Castries: Frequently asked questions

There are 2 airports in Castries: St Lucia Vigie and St Lucia Hewanorra.
The best price we found for a return flight from Washington Ronald Reagan to Castries is 388 €. 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 Ronald Reagan to Castries. But we found flights with one or more stops from 388 €.
As of February 2026, there are no flights flying from Washington Ronald Reagan to Castries.
The cheapest month to fly from Washington Ronald Reagan to Castries is usually June.
If you're flying from Washington Ronald Reagan Airport, the cheapest airport near Castries is St Lucia Hewanorra – which is 30.5 km away from the centre of Castries. We've found flights into this airport from 388 €.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Ronald Reagan Airport to Castries on Thursday, 4 June 2026.
No airlines currently offer direct flights between Washington Ronald Reagan Airport and Castries. 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 Castries 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.
In February, the average temperature is usually around 26°C. September is typically the warmest month in Castries, when it usually averages around 28°C. You can expect the least rain in February. The coldest month is February, with temperatures averaging 25°C. The rainiest month is October.
Currently, Air Canada offers the cheapest flight tickets to Castries.

Flying from Ronald Reagan National Airport (DCA) to Castries: what you need to know

  • Castries's timezone is UTC-4, which is the same as Washington DC (the location of Ronald Reagan National Airport).

  • To avoid rushing for your DCA to Castries flight, leave plenty of time to check in and drop off your luggage. Turning up two hours ahead of international departures and one hour before domestic flights is the standard rule.

  • Delays at check-in and security are more likely if you're heading away during high season, so allow a little extra breathing room. A good rule for peak times? Arrive up to four hours early for international flights and at least two hours for domestic departures.

  • We make it simple to book plane tickets from DCA to Castries with a stopover. To see the options, uncheck 'Direct flights only.' Then, choose a flight that has a stop long enough to tour the city of your choice. Major stopovers include:

    • Hartsfield-Jackson Atlanta International Airport (ATL)

    • John F. Kennedy International Airport (JFK)

    • Newark Liberty International Airport (EWR)

  • Travelling from central Washington DC to DCA takes about 45 minutes on public transport. If you drive, ride-share or take a cab, you'll cover the 6 kilometres in 15 minutes or so, depending on traffic.

  • Want a hassle-free start to your journey? Stay near DCA. Whether you've booked an early flight from Ronald Reagan National Airport to Castries or don't want departure day to feel hectic, these hotels are all about convenience:

  • Of the flights that depart from Ronald Reagan National Airport, 76.44% land on schedule at their destination.

  • DCA is located at 1 Aviation Circle.

How to find the cheapest flights from Ronald Reagan National Airport (DCA) to Castries

  • 161 € is currently the lowest price for a one-way Ronald Reagan National Airport to Castries flight. Return plane tickets start at 388 €. These fares may change depending on demand and availability.

  • To find cheap flights from DCA to Castries, book ahead. Airlines usually offer the most competitive fares when tickets first go on sale.

  • Finding cheap tickets from Ronald Reagan National Airport to Castries is more likely if you can be flexible with your travel dates. Use the 'Whole month' tool to access the lowest prices across the month and score an awesome deal.

  • Save time searching for cheap flights from DCA to Castries by creating a Price Alert. You'll get an email or push notification on the app when a lower fare becomes available.

  • Find an affordable flight from Ronald Reagan National Airport to Castries with the help of our filters. Choose your preferred times, airlines and number of stops, then sort the results by 'Cheapest' to see the best deals.

Airports in Castries

George F. L. Charles Airport (SLU)

  • George F. L. Charles Airport (SLU) to central Castries takes about 5 minutes to reach by car. The centre is roughly 3 kilometres away.

  • Getting there by public transport will take you around 40 minutes.

  • The last thing you need is a lengthy journey to your hotel if you're arriving on a late flight from Ronald Reagan National Airport to Castries. Stay at one of these accommodation options near SLU instead:

  • Fast-track your adventure by picking up a George F. L. Charles Airport rental car. Grab a set of wheels from Drive A Matic, Final Rentals or Sixt and experience the lesser-explored corners of Castries and beyond.

  • For the lowest price, book your vehicle from George F. L. Charles Airport around one week ahead of your flight from DCA to Castries.

Hewanorra Airport (UVF)

  • Hewanorra Airport (UVF) is roughly 56 kilometres from the centre of Castries. Once you've hopped off your flight from Ronald Reagan National Airport to Castries, it'll take you around 1 hour 10 minutes to get to the heart of the city in a ride-share or cab.

  • Place the 'Do not disturb' sign on your door and rest at a hotel close to UVF. Here are a few options where you can kick back after your DCA to Castries flight:

  • Forget about inconvenient public transport schedules or waiting forever for a cab. Grab a Hewanorra Airport rental car and let your trip unfold on your terms. Compare rates and availability from Drive A Matic, Sixt and Final Rentals.

  • Get what you want, not just what's left over. Securing your ride from UVF one week in advance often means more savings and a greater selection of vehicles.

Best time to go to Castries

  • Before booking your flights from Ronald Reagan National Airport to Castries, consider which time of year works best for you. Peak season in Castries offers a bustling atmosphere and plenty of things to do, while the off-season means you'll get better deals on hotels and fewer crowds.

  • Before booking a Ronald Reagan National Airport to Castries plane ticket, think about the kind of weather forecast you're hoping for. September is the warmest month in Castries, with temperatures ranging from 26ºC (79ºF) to 30ºC (86ºF).

  • For cooler conditions, look for a cheap ticket from DCA to Castries in February when temperatures average between 24ºC (75ºF) and 28ºC (82ºF).

More about Castries

  • Start your Castries trip right by choosing the perfect place to stay. After booking your flight from Ronald Reagan National Airport to Castries, explore our range of hotels including:

  • All great holidays should include a little sightseeing. Morne Fortune, Derek Walcott Square and Immaculate Conception Church are attractions you won't want to skip in Castries.

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 45 days.