Which airports can I use when flying from Montreal Pierre Elliott Trudeau Intl Airport to Castries?

Flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries usually depart from Montreal Pierre Elliott Trudeau Intl (YUL) and arrive at Castries George F. L. Charle (SLU).

Which cabin classes can I book on flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries?

Only Economy Class is available on flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries.

Which airports do connecting flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries pass through?

Most connecting flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries pass through Bridgetown Grantley Adams Intl (BGI), which handles 100% of one-stop traffic on this route.

Can I save money by using flexible dates for flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries?

Yes. Flexible dates can save you up to 29% on flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries. Wednesday is the cheapest departure day at C$ 1,028 round-trip on average, while Sunday is the most expensive at C$ 1,447, a difference of C$ 418. KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

Do I need a passport to fly from Montreal Pierre Elliott Trudeau Intl Airport to Castries?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

What is the time difference between Montreal Pierre Elliott Trudeau Intl Airport and Castries?

Castries is 1 hour ahead of Montreal Pierre Elliott Trudeau Intl Airport (Atlantic Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Castries George F. L. Charle Airport (SLU)?

Castries George F. L. Charle Airport (SLU) hosts 5 major car rental companies, with daily rates averaging C$ 83 for economy cars. Top options include: • Ace • Drive A Matic • Final Rentals • Sixt • FlexWays

How much should I expect to pay for a Montreal Pierre Elliott Trudeau Intl Airport to Castries flight?

Round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries range from C$ 1,028 to C$ 1,257, with an average of C$ 1,103 over the past 12 months. Anything below C$ 1,028 counts as a good deal.

What is the cheapest layover airport when flying from Montreal Pierre Elliott Trudeau Intl Airport to Castries?

Flights via Bridgetown Grantley Adams Intl (BGI) offer the most affordable fares, with an average round-trip price of C$ 1,121. Based on KAYAK data over the past 3 months.

When flying from Montreal Pierre Elliott Trudeau Intl Airport to Castries, which airport offers the shortest layover?

Bridgetown Grantley Adams Intl (BGI) had the shortest average connection time for Montreal Pierre Elliott Trudeau Intl Airport to Castries layovers at 6h 34m over the past three months.

Cheap Flights from Montreal to Castries | KAYAK

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

C$ 906

Typical prices: C$ 1,028-C$ 1,257

Multiple Airlines

Thu 6/12Thu 13/12

YUL - SLU • 1 stop

Cheapest one-way flights

C$ 924

Typical prices: C$ 504-C$ 504

Multiple Airlines

Fri 21/12

YUL - SLU • 1 stop

Direct flights

Not available

There are currently no direct flights between Montreal Pierre Elliott Trudeau Intl Airport and Castries. You'll need to take a connecting flight to reach the destination.

Insights

When to travel

October

Cheapest • 7% price drop

December

Most popular

Good to know

Start a new search

KAYAK searches hundreds of sites at once to find you the best travel deals.

We hope you enjoy your trip to Castries!

Flight Deals

Cheap Flights from Montreal to Castries (YUL-SLU)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Montreal to Castries

Sun, 6 Dec - Sun, 13 Dec

8:15 a.m. - 12:05 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

26h 50m1 stop Bridgetown Grantley Adams Intl

9:10 a.m. - 8:35 p.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

12h 25m1 stop Bridgetown Grantley Adams Intl

C$ 906Multiple Airlines

1 day ago

Sun, 6 Dec - Sun, 13 Dec

8:00 p.m. - 7:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

22h 00m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl

9:10 a.m. - 8:35 p.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

12h 25m1 stop Bridgetown Grantley Adams Intl

C$ 938Multiple Airlines

1 day ago

Mon, 14 Dec - Mon, 21 Dec

8:15 a.m. - 7:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

9h 45m1 stop Bridgetown Grantley Adams Intl

12:35 p.m. - 12:26 a.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

12h 51m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl

C$ 956Multiple Airlines

3 hours ago

Sun, 6 Dec - Sun, 13 Dec

8:15 a.m. - 7:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

9h 45m1 stop Bridgetown Grantley Adams Intl

9:10 a.m. - 8:35 p.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

12h 25m1 stop Bridgetown Grantley Adams Intl

C$ 963Multiple Airlines

1 day ago

Sun, 6 Dec - Sun, 13 Dec

9:20 p.m. - 7:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

20h 40m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl

9:10 a.m. - 8:35 p.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

12h 25m1 stop Bridgetown Grantley Adams Intl

C$ 975Multiple Airlines

1 day ago

Thu, 14 Jan - Thu, 21 Jan

9:20 a.m. - 7:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

8h 40m1 stop Bridgetown Grantley Adams Intl

9:10 a.m. - 9:40 p.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

13h 30m1 stop Bridgetown Grantley Adams Intl

C$ 982Multiple Airlines

3+ days ago

Wed, 13 Jan - Thu, 21 Jan

9:20 a.m. - 7:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

8h 40m1 stop Bridgetown Grantley Adams Intl

9:10 a.m. - 9:40 p.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

13h 30m1 stop Bridgetown Grantley Adams Intl

C$ 983Multiple Airlines

3+ days ago

Thu, 14 Jan - Thu, 21 Jan

9:20 a.m. - 7:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

8h 40m1 stop Bridgetown Grantley Adams Intl

9:10 a.m. - 12:25 a.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

16h 15m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl

C$ 993Multiple Airlines

3+ days ago

Wed, 13 Jan - Thu, 21 Jan

9:20 a.m. - 7:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

8h 40m1 stop Bridgetown Grantley Adams Intl

9:10 a.m. - 12:25 a.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

16h 15m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl

C$ 995Multiple Airlines

3+ days ago

Sat, 28 Nov - Fri, 4 Dec

9:20 a.m. - 7:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

8h 40m1 stop Bridgetown Grantley Adams Intl

12:35 p.m. - 8:35 p.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

9h 00m1 stop Bridgetown Grantley Adams Intl

C$ 1,013Multiple Airlines

3+ days ago

Booking Insights

Price, demand, and travel trends for Montreal Pierre Elliott Trudeau Intl Airport to Castries flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

Prices

Layovers

What's the cheapest day of the week to fly from Montreal Pierre Elliott Trudeau Intl Airport to Castries?: Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Montreal Pierre Elliott Trudeau Intl Airport to Castries. It's 7% cheaper than the average day, while Sunday is the most expensive, with prices 31% higher.

Find deals

High season	December
Cheapest flight	C$ 906

The most popular month to fly with an average 65% increase in traveller numbers.

Round-trip flight from Montreal Pierre Elliott Trudeau Intl Airport to Castries

When to book flights from Montreal to Castries

Are your dates flexible? Find out the best times to travel from Montreal to Castries based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which cabin classes can I book on flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries?
Only Economy Class is available on flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries.
How long does a flight from Montreal Pierre Elliott Trudeau Intl Airport to Castries take?
A direct flight from Montreal Pierre Elliott Trudeau Intl Airport to Castries takes 00m, covering 5,944 km.
Do I need a passport to fly from Montreal Pierre Elliott Trudeau Intl Airport to Castries?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
How much should I expect to pay for a Montreal Pierre Elliott Trudeau Intl Airport to Castries flight?
Round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries range from C$ 1,028 to C$ 1,257, with an average of C$ 1,103 over the past 12 months. Anything below C$ 1,028 counts as a good deal.
Have flight prices from Montreal Pierre Elliott Trudeau Intl Airport to Castries changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about C$ 906 to C$ 4,282. That means the highest observed fare was about 5x higher than the lowest one.
How are flight prices from Montreal Pierre Elliott Trudeau Intl Airport to Castries looking right now?
One-way fares from Montreal Pierre Elliott Trudeau Intl Airport to Castries are currently higher than usual. Average one-way flight prices are about C$ 1,248, which is 147% above the typical average for this route.
What car rental options are available at Castries George F. L. Charle Airport (SLU)?
Castries George F. L. Charle Airport (SLU) hosts 5 major car rental companies, with daily rates averaging C$ 83 for economy cars. Top options include:

• Ace
• Drive A Matic
• Final Rentals
• Sixt
• FlexWays
Which airports can I use when flying from Montreal Pierre Elliott Trudeau Intl Airport to Castries?
Flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries usually depart from Montreal Pierre Elliott Trudeau Intl (YUL) and arrive at Castries George F. L. Charle (SLU).
Which airports do connecting flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries pass through?
Most connecting flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries pass through Bridgetown Grantley Adams Intl (BGI), which handles 100% of one-stop traffic on this route.
Can I save money by using flexible dates for flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries?
Yes. Flexible dates can save you up to 29% on flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries. Wednesday is the cheapest departure day at C$ 1,028 round-trip on average, while Sunday is the most expensive at C$ 1,447, a difference of C$ 418.

KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.
What is the time difference between Montreal Pierre Elliott Trudeau Intl Airport and Castries?
Castries is 1 hour ahead of Montreal Pierre Elliott Trudeau Intl Airport (Atlantic Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

If your dates are flexible, aim for a Wednesday departure and avoid flying on Sunday. On this route, Wednesday flights average C$ 1,028, about C$ 418 less than Sunday fares (29% savings) based on the last 12 months.
If you can choose when to travel, plan your Montreal Pierre Elliott Trudeau Intl Airport to Castries trip for October. Fares historically average C$ 1,028 round-trip in that month – typically C$ 767 less than the most expensive month, which is July (based on the last 12 months).
If you're arriving late at night and need somewhere to stay, check out these hotels close to Castries George F. L. Charle Airport.

• Stolen Time St. Lucia
• Sandals Regency La Toc

More options for your flight from Montreal to Castries

Add a hotel or car rental

Airports

Cabin class

Direct Flights

Other destinations

Complete your trip to Castries with a hotel stay or car rental

Car rentals in Castries

Hotels in Castries

YUL - SLU

C$ 906 Find Cheap Flights from Montreal to Castries – Compare and Save

Everything you should know

Cheap Flights from Montreal to Castries (YUL-SLU)

Recent round-trip flight deals from Montreal to Castries

Recent one-way flight deals from Montreal to Castries

Recent last minute flight deals from Montreal to Castries

Price, demand, and travel trends for Montreal Pierre Elliott Trudeau Intl Airport to Castries flights

What's the cheapest day of the week to fly from Montreal Pierre Elliott Trudeau Intl Airport to Castries?

What is the cheapest layover airport when flying from Montreal Pierre Elliott Trudeau Intl Airport to Castries?

When flying from Montreal Pierre Elliott Trudeau Intl Airport to Castries, which airport offers the shortest layover?

Key details for Montreal Pierre Elliott Trudeau Intl Airport to Castries flights

High season

Cheapest flight

When to book flights from Montreal to Castries

Your Montreal Pierre Elliott Trudeau Intl Airport to Castries flight questions, answered

Your guide to booking Montreal Pierre Elliott Trudeau Intl Airport to Castries flights

More options for your flight from Montreal to Castries

Complete your trip to Castries with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights to Castries

Find direct flights to and from Montreal and Castries

Flights to other popular destinations