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Cheap Flights from Baltimore Washington International to Castries

Compare Baltimore Washington International 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 Baltimore Washington International Airport to Castries

Looking for a cheap last-minute deal or the best return flight from Baltimore Washington International Airport to Castries? If you want to travel next month, return fares start from R 5,864. Find the lowest prices on one-way and return tickets right here.
Castries.R 2,122 per passenger.Departing Mon, 2 Feb.One-way flight with Delta.Outbound indirect flight with Delta, departs from Baltimore Washington International on Mon, 2 Feb, arriving in St Lucia Hewanorra.Price includes taxes and charges.From R 2,122, select.
Castries.R 2,122 per passenger.Departing Wed, 12 Aug.One-way flight with Delta.Outbound indirect flight with Delta, departs from Baltimore Washington International on Wed, 12 Aug, arriving in St Lucia Hewanorra.Price includes taxes and charges.From R 2,122, select.
Castries.R 3,437 per passenger.Departing Mon, 2 Mar.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Mon, 2 Mar, arriving in St Lucia Hewanorra.Price includes taxes and charges.From R 3,437, select.
Castries.R 4,367 per passenger.Departing Tue, 7 Apr.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Tue, 7 Apr, arriving in St Lucia Hewanorra.Price includes taxes and charges.From R 4,367, select.
Castries.R 4,517 per passenger.Departing Tue, 22 Sep.One-way flight with Delta.Outbound indirect flight with Delta, departs from Baltimore Washington International on Tue, 22 Sep, arriving in St Lucia Hewanorra.Price includes taxes and charges.From R 4,517, select.
Castries.R 4,997 per passenger.Departing Mon, 11 May.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Mon, 11 May, arriving in St Lucia Hewanorra.Price includes taxes and charges.From R 4,997, select.
Castries.R 7,083 per passenger.Departing Thu, 16 Jul.One-way flight with Delta.Outbound indirect flight with Delta, departs from Baltimore Washington International on Thu, 16 Jul, arriving in St Lucia Hewanorra.Price includes taxes and charges.From R 7,083, select.
Castries.R 7,476 per passenger.Departing Sat, 31 Jan.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Sat, 31 Jan, arriving in St Lucia Vigie.Price includes taxes and charges.From R 7,476, select.

Find the cheapest month to fly from Baltimore Washington International to Castries

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Baltimore Washington International to Castries flights are currently cheapest in February.
Jan
from R 7,476
Feb
from R 2,122
Mar
from R 3,437
Apr
from R 4,367
May
from R 4,997
Jun
Find prices
Jul
from R 7,083
Aug
from R 2,122
Sep
from R 4,517
Oct
Find prices
Nov
Find prices
Dec
Find prices

Alternative Baltimore Washington International to Castries routes

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

St Lucia Vigie

1km from central Castries
Closest
from R 4,899
Search flights

St Lucia Hewanorra

31km from central Castries
Cheapest
from R 2,122
Search flights

Washington D.C. to Castries: Flight information

The things to know before you go.
Cheapest flight foundR 2,122
Cheapest month to flyFebruary

Finding cheap flights from Baltimore Washington International 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 Baltimore Washington International to Castries is R 5,855. 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 Baltimore Washington International to Castries. But we found flights with one or more stops from R 5,855.
As of January 2026, there are no flights flying from Baltimore Washington International to Castries.
The cheapest month to fly from Baltimore Washington International to Castries is usually August.
If you're flying from Baltimore Washington International 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 R 5,855.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Baltimore Washington International Airport to Castries on Wednesday, 19 August 2026.
No airlines currently offer direct flights between Baltimore Washington International 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 January, 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, Delta offers the cheapest flight tickets to Castries.

Flying from Baltimore/Wash International Thurgood Marshall Airport (BWI) to Castries: what you need to know

  • Castries's timezone is UTC-4, which is the same as Washington DC (the location of Baltimore/Wash International Thurgood Marshall Airport).

  • To avoid rushing for your BWI to Castries flight, leave plenty of time to check in and find your gate. Arriving two hours ahead of international departures and an hour before domestic flights is the general rule.

  • Longer lines at security and check-in are more likely if you're flying during high season, so allow some extra breathing room. A good rule of thumb for peak times? Get there up to four hours ahead for international flights and at least two hours for domestic departures.

  • Stopovers are the ideal opportunity to take a break from travelling and maybe even explore another city. When browsing for flight tickets from BWI to Castries, uncheck the 'Direct flights only' box to see where you can stop along the way. Here are some options to consider:

    • Hartsfield-Jackson Atlanta International Airport (ATL)

    • John F. Kennedy International Airport (JFK)

    • Miami International Airport (MIA)

  • Travelling from central Washington DC to BWI takes about 1 hour 30 minutes on public transport. If you ride-share, drive or grab a cab, you'll cover the 40 kilometres in 50 minutes or so, depending on traffic conditions.

  • Want an easy start to your holiday? Stay near BWI. Whether you're catching an early flight from Baltimore/Wash International Thurgood Marshall Airport to Castries or want to avoid feeling rushed, these hotels have you covered:

  • Of all flights departing from Baltimore/Wash International Thurgood Marshall Airport, 77.13% land on schedule at their destination.

How to find the cheapest flights from Baltimore/Wash International Thurgood Marshall Airport (BWI) to Castries

  • R 2,122 is currently the best price for a one-way Baltimore/Wash International Thurgood Marshall Airport to Castries flight. Return flight tickets start from R 5,855. These fares can change depending on demand.

  • Don't leave things to the last moment. You're more likely to find cheap flights from BWI to Castries if you book ahead. Airlines often have some great early bird deals.

  • The 'Whole month' tool will show you the cheapest tickets from Baltimore/Wash International Thurgood Marshall Airport to Castries across the entire month. It's an easy way to find a bargain if your dates are flexible.

  • Snapping up a cheap flight from BWI to Castries couldn't be easier with Price Alerts. All you need to do is create one of these automatic notifications and we'll notify you as soon as a lower fare pops up.

  • Snag an affordable flight from Baltimore/Wash International Thurgood Marshall Airport to Castries with the help of our filters. Choose your preferred departure time, duration and airlines, then sort the results by 'Cheapest' for the best deals.

Airports in Castries

George F. L. Charles Airport (SLU)

  • George F. L. Charles Airport (SLU) is around 3 kilometres from the centre of Castries. If you're catching a cab or a ride-share, the drive will take roughly 5 minutes.

  • Getting there on public transport takes about 40 minutes.

  • The last thing you need is a lengthy journey to your hotel if you're getting in late on a flight from Baltimore/Wash International Thurgood Marshall Airport to Castries. Book one of these accommodation options near SLU instead:

  • Say yes to new adventures by picking up a George F. L. Charles Airport rental car. Grab your wheels from Drive A Matic, Final Rentals or Sixt and explore beyond Castries's main sights.

  • For the best deal, book your vehicle from George F. L. Charles Airport about one week ahead of your flight from BWI to Castries.

Hewanorra Airport (UVF)

  • Once your flight from Baltimore/Wash International Thurgood Marshall Airport to Castries has hit the tarmac, you can reach the city centre in around 1 hour 10 minutes by car. Central Castries is roughly 56 kilometres from Hewanorra Airport (UVF).

  • Following your BWI to Castries flight, tuck yourself in at a hotel near UVF. These are some great accommodation options that'll help you slip into relaxation mode:

  • Forget about public transport timetables or long cab queues. Grab a Hewanorra Airport rental car and take your journey in whatever direction you like. Compare rates and availability from Drive A Matic, Sixt and Final Rentals.

  • Secure your first choice, not your last resort. Securing your ride from UVF one week in advance often means better deals and a wider selection of vehicles.

Best time to go to Castries

  • Carefully consider your travel dates before booking your flight from Baltimore/Wash International Thurgood Marshall Airport to Castries. The city comes alive during high season, but hotel rates are often higher and major attractions can be busy. Go to Castries in the off-season if you want a more relaxed vibe.

  • Before booking a Baltimore/Wash International Thurgood Marshall Airport to Castries flight 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).

  • Look for cheap tickets from BWI to Castries in February if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 24ºC (75ºF) and 28ºC (82ºF) on average.

More about Castries

  • After booking your flight from Baltimore/Wash International Thurgood Marshall Airport to Castries, find a hotel that offers the right mix of comfort and location. Make one of these accommodation options your base for exploring Castries:

  • There are so many things to discover in this city it can be hard to figure out where to start. Morne Fortune, Derek Walcott Square and Immaculate Conception Church are major attractions which should be on any well-planned Castries itinerary.

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.