Cheap flight tickets from Montreal to Castries

Compare Montreal to Castries flight deals

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

Book the best Castries fare with no extra fees

Flight deals from Montreal to Castries

Looking for a cheap last-minute deal or the best return flight from Montreal to Castries? If you want to travel next month, return fares start from RM1,627. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Montreal to Castries

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

Alternative Montreal to Castries routes

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

Montreal to Castries: Flight information

The things to know before you go.
Cheapest flight foundRM665
Cheapest month to flyApril

Finding cheap flights from Montreal 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 Montreal to Castries is RM1,381. 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 Montreal to Castries. But we found flights with one or more stops from RM1,381.
As of March 2026, there are no flights flying from Montreal to Castries.
The cheapest month to fly from Montreal to Castries is usually June.
If you're flying from Montreal, 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 RM1,381.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Montreal to Castries on Saturday, 13 June 2026.
No airlines currently offer direct flights between Montreal 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 March, 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.
The cheapest airline that flies to Castries is WestJet .

Travelling from Montreal to Castries: what you need to know

  • Montreal's main base, Montreal-Pierre Elliott Trudeau International Airport (YUL), is where many great holidays begin. Explore the options for leaving from here when booking your flight from Montreal to Castries.

  • Hop off your plane in Castries at George F. L. Charles Airport (SLU) or Hewanorra Airport (UVF).

  • Montreal and Castries follow the same timezone, UTC-4.

  • Leave plenty of time to catch your Montreal to Castries flight. As a general rule, arrive at least two hours before international departures and an hour ahead for domestic flights.

  • During popular months like August, you'll want to get to the airport earlier than normal. Arrive two hours before domestic departures and four hours ahead of an international flight when you fly during high season in general.

How to find the cheapest flights from Montreal to Castries

  • Booking in advance is often the key to locking in a cheap Montreal to Castries flight. Fares tend to rise as demand increases, so the closer your departure date, the more you'll likely pay.

  • Getting cheap plane tickets from Montreal to Castries is easy if you're flexible with your dates. Use the 'Whole month' search function to see the best prices across each month and walk away with an awesome deal.

  • You don't need to check every day to find out if fares have dropped when you create a Price Alert. We'll update you as soon as a better deal comes up on cheap flights from Montreal to Castries.

  • Select your ideal departure and arrival times, number of stops and airlines by using the filters. Alternatively, sort your Montreal to Castries flight results by 'Best,' 'Fastest' or 'Cheapest.'

Flying from Montreal

Montreal-Pierre Elliott Trudeau International Airport (YUL)

  • YUL is about 16 kilometres from central Montreal. If you're driving, catching a cab or ride-sharing from the centre, it'll take 25 minutes or so to get there, depending on the traffic. If you're planning to take public transport, expect the journey time to be around 45 minutes.

  • After a stress-free start to your trip? Stay near Montreal-Pierre Elliott Trudeau International Airport. Whether you're taking an early flight from Montreal to Castries or want to avoid feeling rushed, these hotels are perfect:

  • When it comes to the on-time performance of Montreal-Pierre Elliott Trudeau International Airport, 64.89% of flights complete their journey on time.

  • The address for YUL is 975 Romeo Vachon Street North.

Arriving in Castries

George F. L. Charles Airport (SLU)

  • George F. L. Charles Airport (SLU) to central Castries takes around 5 minutes to reach by car. The centre is roughly 2 kilometres away.

  • It usually takes 40 minutes to get there on public transport.

  • Book a hotel close to SLU if you have a late flight from Montreal to Castries. Check in to one of these options and avoid the hassle of a long transfer:

  • Go wherever you want, whenever you want with a George F. L. Charles Airport rental car. Pick up a set of wheels from Drive A Matic, Final Rentals or Sixt and venture far and wide through Castries and beyond.

  • To get the best deal, reserve your vehicle from George F. L. Charles Airport around one week in advance of your Montreal to Castries flight.

Hewanorra Airport (UVF)

  • After your flight from Montreal to Castries has touched down, you can make your way to the city centre in around 1 hour 10 minutes by car. Central Castries is approximately 31 kilometres from Hewanorra Airport (UVF).

  • Hang the 'Do not disturb' sign on your door and relax at a hotel near UVF. Here are a few options where you can tuck yourself in after your flight from Montreal to Castries:

  • The fastest way to get to where you're going is with a Hewanorra Airport rental car. Grab a set of wheels from Drive A Matic, Sixt or Final Rentals and be on your way in a flash.

  • Call dibs on the best options. Booking your ride from UVF one week ahead of time often means more savings and a greater range of vehicles.

Best time to go to Castries

  • June is the busiest month for flights from Montreal to Castries. To escape the crowds, visit Castries in February.

  • Before locking in your Montreal to Castries tickets, think about the kind of weather you prefer. September is the warmest month in Castries, with temperatures ranging from 26ºC (79ºF) to 30ºC (86ºF).

  • If you want cooler conditions, search for a cheap flight from Montreal to Castries in February when temperatures average between 24ºC (75ºF) and 28ºC (82ºF).

More about Castries

  • Start your Castries trip off on the right foot by choosing the ideal place to stay. Once you've booked your flight from Montreal to Castries, browse our selection of hotels including:

  • There are so many things to see and do in this city it can be tricky to work out where to start. Derek Walcott Square, Morne Fortune and Immaculate Conception Church are highlights which should be on any good Castries itinerary.

Explore more of Saint Lucia

  • Castries has its own special appeal, but there are so many other corners of Saint Lucia waiting to be discovered. Around 32 kilometres south of Castries, a trip to Vieux Fort will keep you on the go. Start with popular sights like Maria Islands Museum, Anse Des Sables Beach and YoungFaith Park.

  • Head 24 kilometres south-east from Castries to visit Micoud, another favourite stop in Saint Lucia. Be sure to check out Josephine Splash Park and Ti Rocher Community Park.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.