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Cheap Flights from Montreal (YMQA) to Castries (SLUA)

Compare Montreal 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 Montreal to Castries

Looking for a cheap last-minute deal or the best return flight from Montreal to Castries? Find the lowest prices on one-way and return tickets right here.
Castries.$503 per passenger.Departing Fri, 5 Sep, returning Sat, 13 Sep.Return flight with United.Outbound indirect flight with United, departs from Montreal Pierre Elliott Trudeau on Fri, 5 Sep, arriving in St Lucia Hewanorra.Inbound indirect flight with United, departs from St Lucia Hewanorra on Sat, 13 Sep, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $503, select.
Castries.$633 per passenger.Departing Tue, 23 Sep, returning Tue, 7 Oct.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Montreal Pierre Elliott Trudeau on Tue, 23 Sep, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Tue, 7 Oct, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $633, select.
Castries.$633 per passenger.Departing Tue, 7 Oct, returning Tue, 14 Oct.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Montreal Pierre Elliott Trudeau on Tue, 7 Oct, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Tue, 14 Oct, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $633, select.
Castries.$664 per passenger.Departing Mon, 18 Aug, returning Tue, 9 Sep.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Montreal Pierre Elliott Trudeau on Mon, 18 Aug, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Tue, 9 Sep, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $664, select.
Castries.$664 per passenger.Departing Tue, 19 Aug, returning Fri, 3 Oct.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Montreal Pierre Elliott Trudeau on Tue, 19 Aug, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Fri, 3 Oct, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $664, select.
Castries.$749 per passenger.Departing Wed, 3 Dec, returning Wed, 10 Dec.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Montreal Pierre Elliott Trudeau on Wed, 3 Dec, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Wed, 10 Dec, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $749, select.
Castries.$749 per passenger.Departing Sun, 26 Oct, returning Sun, 2 Nov.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Montreal Pierre Elliott Trudeau on Sun, 26 Oct, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Sun, 2 Nov, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $749, select.
Castries.$839 per passenger.Departing Fri, 15 Aug, returning Fri, 22 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from Montreal Pierre Elliott Trudeau on Fri, 15 Aug, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Fri, 22 Aug, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $839, select.

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 September.
Aug
from $839
Sep
from $503
Oct
from $633
Nov
from $869
Dec
from $749
Jan
from $844
Feb
from $898
Mar
from $843
Apr
from $870
May
from $1,285
Jun
from $1,257
Jul
from $1,285

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 found$503
Cheapest month to flySeptember

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 $503. 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 $503.
As of August 2025, there are no flights flying from Montreal to Castries.
The cheapest month to fly from Montreal to Castries is usually September.
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 $503.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Montreal to Castries on Friday, 5 September 2025.
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 August, 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.
The cheapest airline that flies to Castries is United .

Flying from Montreal to Castries: what you need to know

  • Planning your trip begins with working out where you'll fly out of in Montreal. Montreal-Pierre Elliott Trudeau International Airport (YUL) is the city's main airport, so check out your options for booking a flight from Montreal to Castries taking off from here.

  • When it comes to planning your arrival in Castries, George F. L. Charles Airport (SLU) and Hewanorra Airport (UVF) are the primary gateways.

  • Castries's timezone is UTC-4, which is the same as Montreal.

  • Allow plenty of time to get on your Montreal to Castries flight. As a general rule, turn up two hours before international departures and an hour ahead for domestic flights.

  • Flying during a peak time such as August? School holidays and other high seasons can mean longer lines at security. Play it safe and arrive up to four hours before an international flight and two hours before domestic departures.

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 catching a cab, ride-sharing or driving from the centre, it'll take 25 minutes or so to get there, depending on the traffic. If you're using public transport, expect the travel time to be around 45 minutes.

  • Looking for a convenient hotel close to Montreal-Pierre Elliott Trudeau International Airport? If you've booked an early flight from Montreal to Castries, these accommodation options will put you nice and close to your departure gate:

  • 64.89% of flights departing from Montreal-Pierre Elliott Trudeau International Airport make it to their destination on time.

  • You'll find YUL at 975 Romeo Vachon Street North.

Arriving 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 2 kilometres away.

  • Travelling to the centre by public transport takes roughly 40 minutes.

  • Consider staying in a hotel close to SLU if you have a late flight from Montreal to Castries. Settle into one of these options and skip the long transfer:

  • Explore without limits with a George F. L. Charles Airport rental car. Pick up a set of wheels from Drive A Matic, Final Rentals or Sixt and chase adventure across Castries and beyond.

  • Lock in the lowest price by reserving your vehicle from George F. L. Charles Airport around one week ahead of your departure.

Hewanorra Airport (UVF)

  • Central Castries is approximately 31 kilometres from Hewanorra Airport (UVF). As soon as your flight from Montreal to Castries has hit the runway and you've made your way through the terminal, the drive should be around 1 hour 10 minutes.

  • There are some comfortable places to lay your head close to UVF. Tuck yourself in after your Montreal to Castries flight at one of these perfectly located options:

  • Forget about public transport schedules or cab lines. Pick up a Hewanorra Airport rental car and go in any direction that inspires you. Compare rates and availability from Drive A Matic, Sixt and Final Rentals.

  • Lock in the best price by booking your ride from UVF one week ahead of time. You can also expect to have 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 perfect place to stay. As soon as you've booked your flight from Montreal to Castries, explore our range of hotels including:

  • Derek Walcott Square and Morne Fortune are just the start of the big attractions to add to your Castries itinerary. Keep the sightseeing going at Immaculate Conception Church.

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.

Plan the rest of your trip from Montreal to Castries

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