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.

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

Yes. Being flexible with your travel dates can save you up to 50% on the Montreal Pierre Elliott Trudeau Intl Airport to Castries route. Thursday is the cheapest departure day at C$ 1,123 round-trip on average, while Monday is the most expensive at C$ 2,208, a difference of C$ 1,085. KAYAK's flexible dates feature shows options up to 3 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 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 starting from around C$ 20 for economy cars. Top options include: • Ace • Drive A Matic • Final Rentals • Sixt • Hertz

Cheap Flights from Montreal to Castries | KAYAK

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Cheapest round-trip

C$ 824

Typical prices: C$ 1,298-C$ 2,208

Multiple Airlines

Fri 26/10Thu 1/11

YUL - SLU • 2 stops

Cheapest one-way flights

C$ 444

Typical prices: C$ 502-C$ 668

Multiple Airlines

Wed 7/11

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.

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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

Recent round-trip flight deals from Montreal to Castries

Mon, 26 Oct - Sun, 1 Nov

7:10 p.m. - 7:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

23h 50m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl

12:35 p.m. - 9:40 p.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

10h 05m1 stop Bridgetown Grantley Adams Intl

C$ 824Multiple Airlines

Mon, 26 Oct - Sun, 1 Nov

7:10 p.m. - 7:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

23h 50m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl

12:35 p.m. - 9:40 p.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

10h 05m1 stop Bridgetown Grantley Adams Intl

C$ 827Multiple Airlines

Mon, 26 Oct - Sun, 1 Nov

9:20 a.m. - 3:15 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

29h 55m1 stop Bridgetown Grantley Adams Intl

12:35 p.m. - 9:40 p.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

10h 05m1 stop Bridgetown Grantley Adams Intl

C$ 828Multiple Airlines

Mon, 26 Oct - Sun, 1 Nov

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

21h 40m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl

12:35 p.m. - 12:25 a.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

12h 50m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl

C$ 830Multiple Airlines

Mon, 26 Oct - Sun, 1 Nov

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

21h 40m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl

12:35 p.m. - 1:56 a.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

14h 21m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl

C$ 835Multiple Airlines

Mon, 26 Oct - Sun, 1 Nov

9:20 a.m. - 12:05 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

26h 45m1 stop Bridgetown Grantley Adams Intl

12:35 p.m. - 9:40 p.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

10h 05m1 stop Bridgetown Grantley Adams Intl

C$ 837Multiple Airlines

Mon, 26 Oct - Sun, 1 Nov

7:10 p.m. - 7:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

23h 50m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl

12:35 p.m. - 9:40 p.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

10h 05m1 stop Bridgetown Grantley Adams Intl

C$ 837Multiple Airlines

Mon, 26 Oct - Sun, 1 Nov

9:20 a.m. - 3:15 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

29h 55m1 stop Bridgetown Grantley Adams Intl

12:35 p.m. - 1:56 a.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

14h 21m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl

C$ 837Multiple Airlines

Mon, 26 Oct - Sun, 1 Nov

7:10 p.m. - 7:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

23h 50m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl

12:35 p.m. - 12:25 a.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

12h 50m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl

C$ 838Multiple Airlines

Mon, 26 Oct - Sun, 1 Nov

6:10 p.m. - 7:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

24h 50m2 stops Toronto Pearson Intl 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$ 841Multiple Airlines

Recent one-way flight deals from Montreal to Castries

Sat, 7 Nov

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

C$ 444Multiple Airlines

Sun, 25 Oct

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

9h 40m1 stop Bridgetown Grantley Adams Intl

C$ 528Multiple Airlines

Thu, 5 Nov

9:20 a.m. - 12:05 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

25h 45m1 stop Bridgetown Grantley Adams Intl

C$ 538Multiple Airlines

Sun, 25 Oct

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

21h 40m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl

C$ 540Multiple Airlines

Sun, 11 Oct

6:00 a.m. - 7:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

13h 00m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl

C$ 564Multiple Airlines

Thu, 5 Nov

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

C$ 613Multiple Airlines

Sat, 7 Nov

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

C$ 620Multiple Airlines

Sun, 25 Oct

6:45 a.m. - 1:45 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

31h 00m3 stops Toronto Pearson Intl Simpson Bay Princess Juliana Kingstown Argyle Intl

C$ 635Multiple Airlines

Fri, 6 Nov

6:45 a.m. - 10:10 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

38h 25m3 stops Toronto Pearson Intl Simpson Bay Princess Juliana Port of Spain Piarco Intl

C$ 761Multiple Airlines

Sun, 11 Oct

7:20 p.m. - 3:15 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

19h 55m3 stops Toronto Pearson Intl Port of Spain Piarco Intl Bridgetown Grantley Adams Intl

C$ 786Multiple Airlines

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 from Montreal Pierre Elliott Trudeau Intl Airport to Castries with more confidence.

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$ 1,123. 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 377 minutes over the past 3 months.

Find deals

Cheapest flight	C$ 444

Flights 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 0h 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.
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$ 824 to C$ 4,184. 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 lower than usual. Average one-way flight prices are about C$ 603, which is 10% below 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 starting from around C$ 20 for economy cars. Top options include:
• Ace
• Drive A Matic
• Final Rentals
• Sixt
• Hertz
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. Other layover airports each see under 5%.
Can I save money by using flexible dates for flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries?
Yes. Being flexible with your travel dates can save you up to 50% on the Montreal Pierre Elliott Trudeau Intl Airport to Castries route. Thursday is the cheapest departure day at C$ 1,123 round-trip on average, while Monday is the most expensive at C$ 2,208, a difference of C$ 1,085. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

If your dates are flexible, aim for a Thursday departure instead of Monday. On this route, Thursday flights average C$ 1,123 – about C$ 1,085 less than Monday (49% savings) 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

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YUL - SLU

C$ 444 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

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

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

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

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