C$199 Cheap Flights from Montreal Pierre Elliott Trudeau (YUL) to Castries (SLUA)

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Flight deals from Montreal Pierre Elliott Trudeau to Castries

Looking for a cheap last-minute deal or the best return flight from Montreal Pierre Elliott Trudeau Airport to Castries? If you want to travel next month, return fares start from C$433. Find the lowest prices on one-way and return tickets right here.

Castries.C$200 per passenger.Departing Sat., Sep. 12.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Montreal Pierre Elliott Trudeau on Sat., Sep. 12, arriving in St Lucia Hewanorra.Price includes taxes and charges.From C$200, select.

Castries.C$208 per passenger.Departing Sat., Oct. 3.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Montreal Pierre Elliott Trudeau on Sat., Oct. 3, arriving in St Lucia Hewanorra.Price includes taxes and charges.From C$208, select.

Castries.C$251 per passenger.Departing Thu., Aug. 27.One-way flight with American Airlines.Outbound indirect flight with American Airlines, departs from Montreal Pierre Elliott Trudeau on Thu., Aug. 27, arriving in St Lucia Hewanorra.Price includes taxes and charges.From C$251, select.

Castries.C$280 per passenger.Departing Wed., May 19.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Montreal Pierre Elliott Trudeau on Wed., May 19, arriving in St Lucia Hewanorra.Price includes taxes and charges.From C$280, select.

Castries.C$331 per passenger.Departing Fri., Jan. 8.One-way flight with American Airlines.Outbound indirect flight with American Airlines, departs from Montreal Pierre Elliott Trudeau on Fri., Jan. 8, arriving in St Lucia Hewanorra.Price includes taxes and charges.From C$331, select.

Castries.C$335 per passenger.Departing Wed., Dec. 30.One-way flight with American Airlines.Outbound indirect flight with American Airlines, departs from Montreal Pierre Elliott Trudeau on Wed., Dec. 30, arriving in St Lucia Hewanorra.Price includes taxes and charges.From C$335, select.

Castries.C$362 per passenger.Departing Sun., Feb. 28.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from Montreal Pierre Elliott Trudeau on Sun., Feb. 28, arriving in St Lucia Hewanorra.Price includes taxes and charges.From C$362, select.

Castries.C$404 per passenger.Departing Sat., Nov. 7.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from Montreal Pierre Elliott Trudeau on Sat., Nov. 7, arriving in St Lucia Hewanorra.Price includes taxes and charges.From C$404, select.

Find the cheapest month to fly from Montreal Pierre Elliott Trudeau to Castries

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

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Alternative Montreal Pierre Elliott Trudeau to Castries routes

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

St Lucia Vigie

1km from central Castries

Closest

from C$370

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St Lucia Hewanorra

30km from central Castries

Cheapest

from C$199

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Montreal to Castries: Flight information

The things to know before you go.

Cheapest flight found	C$200
Cheapest month to fly	September

Finding cheap flights from Montreal Pierre Elliott Trudeau to Castries: Frequently asked questions

How many airports are there in Castries?

There are 2 airports in Castries: St Lucia Vigie and St Lucia Hewanorra.

How much are return flights from Montreal Pierre Elliott Trudeau to Castries?

The best price we found for a return flight from Montreal Pierre Elliott Trudeau to Castries is C$433. 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.

Which airlines fly direct from Montreal Pierre Elliott Trudeau to Castries?

Currently, there are no airlines that fly direct from Montreal Pierre Elliott Trudeau to Castries. But we found flights with one or more stops from C$433.

How many flights are there a week from Montreal Pierre Elliott Trudeau to Castries?

As of August 2026, there are no flights flying from Montreal Pierre Elliott Trudeau to Castries.

When is the cheapest time to fly from Montreal Pierre Elliott Trudeau to Castries?

The cheapest month to fly from Montreal Pierre Elliott Trudeau to Castries is usually September.

Which is the cheapest airport to fly into in Castries?

If you're flying from Montreal Pierre Elliott Trudeau Airport, the cheapest airport near Castries is St Lucia Hewanorra – which is 30.4 km away from the centre of Castries. We've found flights into this airport from C$433.

Which upcoming date is cheapest to fly from Montreal Pierre Elliott Trudeau Airport to Castries on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Montreal Pierre Elliott Trudeau Airport to Castries on Saturday, September 19, 2026.

Can I get a direct flight from Montreal Pierre Elliott Trudeau Airport to Castries?

No airlines currently offer direct flights between Montreal Pierre Elliott Trudeau Airport and Castries. Most routes have one or more stops.

How can I get the best flight deal from Montreal Pierre Elliott Trudeau Airport to Castries?

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.

When is the best time to book flights to Castries?

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.

What’s the weather like in Castries?

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.

Which is the cheapest airline to fly from Montreal Pierre Elliott Trudeau Airport to Castries with?

Currently, WestJet offers the cheapest flight tickets to Castries.

Flying from Montreal-Pierre Elliott Trudeau International Airport (YUL) to Castries: what you need to know

Castries's timezone is UTC-4, which is the same as Montreal (the location of Montreal-Pierre Elliott Trudeau International Airport).
For hassle-free travel, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This ensures you have enough time to board your flight from YUL to Castries.
During popular months like August, you'll want to get to the airport well in advance. Arrive two hours before a domestic departure and four hours ahead of an international flight when you fly during peak periods in general.
You can visit Saint Lucia for tourism purposes without a visa if you hold a passport from Canada. But before booking your flight tickets from Montreal-Pierre Elliott Trudeau International Airport to Castries, make sure you have the latest information. Visa rules are subject to change, and you may need some documentation if your trip is for business or another reason.
YUL is about 26 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 traffic. If you're using public transport, expect the journey time to be around 2 hours and 15 minutes.
Booked an early flight from Montreal-Pierre Elliott Trudeau International Airport to Castries? Avoid the hassle of rushing to the terminal (and catch some extra z's) by choosing one of these stays near YUL:

How to find the cheapest flights from Montreal-Pierre Elliott Trudeau International Airport (YUL) to Castries

C$199 is the best price for a one-way ticket from Montreal-Pierre Elliott Trudeau International Airport to Castries. A return flight starts at C$433. These prices can change depending on availability and demand.
Don't wait until the last moment. You're more likely to get cheap tickets from YUL to Castries if you book ahead. Airlines often have some fantastic early bird rates.
The 'Whole month' tool shows you the cheapest tickets from Montreal-Pierre Elliott Trudeau International Airport to Castries throughout the entire month. It's an easy way to snap up a bargain if your plans are flexible.
Sign into your online account or use the app to set up a Price Alert. We'll get in touch straight away if there's a cheaper deal on this route. It's easy to do, and it'll save you from looking for cheap tickets from YUL to Castries every day.
Make the most of the filters to find your ideal trip. To see the 'Best,' 'Fastest' or 'Cheapest' flights from Montreal-Pierre Elliott Trudeau International Airport to Castries, use the 'Sort by' function. You can also filter results by arrival and departure times, airline, and journey duration.

Airports in Castries

Hewanorra Airport (UVF)

Hewanorra Airport (UVF) is around 56 kilometres from the centre of Castries. With your own car rental or if you're catching a cab, the drive is about 1 hour and 9 minutes.
If you have a late flight from Montreal-Pierre Elliott Trudeau International Airport to Castries, nothing beats the convenience of staying close to the terminal. Grab your suitcases from the carousel and then be showered and sleeping not long after at one of these accommodation options near UVF:

George F. L. Charles Airport (SLU)

The centre of Castries is located around 3 kilometres from George F. L. Charles Airport (SLU). After your flight from Montreal-Pierre Elliott Trudeau International Airport to Castries has landed and you've navigated your way to arrivals, expect a drive of about 6 minutes.
Public transport will get you there in about 40 minutes.
There are some great places to drop your things at near SLU. Unwind and get cozy after your flight from YUL to Castries at one of these well-located options:

Best time to go to Castries

It's time to figure out your dates for your flight from Montreal-Pierre Elliott Trudeau International Airport to Castries. July is the most popular month to travel to Castries. If you prefer a more relaxed vibe, go in May.
The warmest month in Castries is September, with temperatures ranging between 26ºC and 30ºC. Lock in your flights from Montreal-Pierre Elliott Trudeau International Airport to Castries in this month if this is the type of weather you enjoy.
If you want to travel in cooler conditions, look for a cheap flight from YUL to Castries in February when temperatures average between 24ºC and 28ºC.

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-Pierre Elliott Trudeau International Airport to Castries, explore our range of hotels including:
There are so many things to discover in this city it can be tricky to know where to begin. Derek Walcott Square, Morne Fortune and Immaculate Conception Church are popular attractions which should be on any well-planned Castries itinerary.

Complete your Castries trip with a car rental

Finding you a cheap flight from Montreal-Pierre Elliott Trudeau International Airport to Castries isn't our only cool trick. Check out our car rentals in Castries and see the sights your way. We search for deals from trusted car rental companies and put them all in one place. You can instantly compare rates and then book with no fees.