C$413 Cheap Flights from Buffalo Niagara (BUF) to Castries (SLUA)

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Flight deals from Buffalo Niagara to Castries

Looking for a cheap last-minute deal or the best return flight from Buffalo Niagara Airport to Castries? If you want to travel next month, return fares start from C$1,070. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Buffalo Niagara to Castries

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Buffalo Niagara to Castries flights are currently cheapest in August.

Alternative Buffalo Niagara to Castries routes

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

Buffalo to Castries: Flight information

The things to know before you go.
Cheapest flight foundC$413
Cheapest month to flyAugust

Finding cheap flights from Buffalo Niagara 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 Buffalo Niagara to Castries is C$1,056. 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 Buffalo Niagara to Castries. But we found flights with one or more stops from C$1,056.
As of June 2026, there are no flights flying from Buffalo Niagara to Castries.
The cheapest month to fly from Buffalo Niagara to Castries is usually August.
If you're flying from Buffalo Niagara 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 C$1,056.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Buffalo Niagara Airport to Castries on Wednesday, August 5, 2026.
No airlines currently offer direct flights between Buffalo Niagara 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 June, the average temperature is usually around 28°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, jetBlue offers the cheapest flight tickets to Castries.

Flying from Buffalo Niagara International Airport (BUF) to Castries: what you need to know

  • Buffalo (the location of Buffalo Niagara International Airport) and Castries are in the same timezone — UTC-4.

  • Give yourself plenty of time to get on your flight from BUF to Castries. As a general rule, arrive at least two hours before international departures and an hour ahead for domestic flights.

  • Flying during a peak time like August? High seasons (like Thanksgiving, Christmas and New Year) can easily add another hour at check-in and security. Be extra safe and arrive up to four hours ahead of international flights and two hours before domestic departures.

  • Stopovers are the ideal opportunity to take a break from travelling — and possibly even explore another city. When browsing flights from BUF to Castries, uncheck the 'Direct flights only' box to see where you can visit along the way. Here are some popular options to consider:

    • Newark Liberty International Airport (EWR)

    • John F. Kennedy International Airport (JFK)

    • Miami International Airport (MIA)

  • If you have a passport from United States and want to travel to Saint Lucia for tourism purposes, you won't need a visa. However, visa and entry requirements may differ based on the length of your trip and are subject to change. For the most up-to-date information, contact your destination's nearest embassy or consulate before reserving a cheap ticket from Buffalo Niagara International Airport to Castries.

  • Travelling from central Buffalo to BUF takes about 1 hour and 15 minutes on public transport. If you drive, ride-share or take a cab, you'll cover the 18 kilometres in 21 minutes or so, depending on traffic conditions.

  • Catching an early flight from Buffalo Niagara International Airport to Castries? Avoid the last-minute rush to the airport (and sneak in some extra precious sleep) by choosing one of these stays close to BUF:

How to find the cheapest flights from Buffalo Niagara International Airport (BUF) to Castries

  • The best price we've seen for a one-way ticket from Buffalo Niagara International Airport to Castries is C$413. The cheapest price for a return flight is C$1,056. Keep in mind fares may change due to availability at the time of booking.

  • Don't wait until the last minute. You're more likely to find cheap tickets from BUF to Castries if you book early. Airlines often have some excellent early bird deals.

  • If you can be flexible with your travel dates, try using the 'Whole month' search tool. It'll give you the lowest price in every month when looking for a ticket from Buffalo Niagara International Airport to Castries.

  • Snapping up a cheap ticket from BUF to Castries is a piece of cake with Price Alerts. All you need to do is set up one of these automatic alerts and we'll notify you when the price has dropped.

  • Make the most of the filters to find your ideal journey. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Buffalo Niagara International Airport to Castries, use the 'Sort by' tool. You can also filter by airline, departure and arrival times, and number of stops.

Airports in Castries

Hewanorra Airport (UVF)

  • Hewanorra Airport (UVF) to central Castries is roughly 56 kilometres. It'll take you about 1 hour and 9 minutes to get to the centre driving.

  • If you're arriving on a late flight from Buffalo Niagara International Airport to Castries, few things beat the convenience of staying close to the terminal. Pick up your bags from the carousel and then be showered and resting soon after at one of these hotels near UVF:

George F. L. Charles Airport (SLU)

  • George F. L. Charles Airport (SLU) is roughly 3 kilometres from the centre of Castries. After your flight from Buffalo Niagara International Airport to Castries, it'll take you around 6 minutes to reach the heart of the city in a cab or ride-share.

  • The journey will take roughly 40 minutes on public transport.

  • Hang up the 'Do not disturb' sign and unwind at a hotel close to SLU. Here are a few options where you can put your feet up after your flight from BUF to Castries:

Best time to go to Castries

  • It's time to plan your dates for your flight from Buffalo Niagara International Airport to Castries. July is the busiest month to travel to Castries. If you prefer a more relaxed vibe, go in May.

  • Before you book a flight from Buffalo Niagara International Airport to Castries, think about the type of weather you enjoy. September is the warmest month in Castries, with temperatures ranging from 26ºC to 30ºC.

  • Look for cheap flights from BUF to Castries in February if you like cooler conditions. Temperatures are at their lowest around then, ranging between 24ºC and 28ºC on average.

More about Castries

  • When it comes to searching for somewhere to lay your head, you'll find the most popular stays in Castries right here. Browse these options as soon as you've booked your flight from Buffalo Niagara International Airport to Castries:

  • There are so many things to discover in this city it can be tricky to work out where to start. Derek Walcott Square, Morne Fortune and Immaculate Conception Church are popular attractions which should be on every Castries itinerary.

Complete your Castries trip with a car rental

  • We use the same magic that helped you find your cheap flight from Buffalo Niagara International Airport to Castries to track down amazing deals on car rentals. Search for your ride in seconds and easily compare your options. Plus we give you all the info you need on car rentals in Castries, from the most popular rental company to the best time to book.

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