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$ 1,115 round-trip on average, while Monday is the most expensive at C$ 2,193, a difference of C$ 1,078. 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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Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

C$ 866

Typical prices: C$ 1,289-C$ 2,193

Multiple Airlines

Fri 30/11Fri 7/12

YUL - SLU • 2 stops

Cheapest one-way flights

C$ 421

Typical prices: C$ 499-C$ 664

Multiple Airlines

Fri 2/11

YUL - SLU • 2 stops

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 - Fri, 30 Oct

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

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

13h 21m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl

C$ 830Multiple Airlines

Mon, 26 Oct - Fri, 30 Oct

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

11h 50m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl

C$ 847Multiple Airlines

Mon, 30 Nov - Mon, 7 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

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$ 866Multiple Airlines

Thu, 10 Dec - Sun, 20 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$ 870Multiple Airlines

Thu, 10 Dec - Sun, 20 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. - 8:25 a.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

20h 50m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl

C$ 870Multiple 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. - 7:50 a.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

20h 15m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl

C$ 872Multiple Airlines

Tue, 8 Dec - Tue, 15 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

12:35 p.m. - 10:25 a.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

22h 50m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl

C$ 873Multiple Airlines

Mon, 30 Nov - Mon, 7 Dec

6:10 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. - 7:50 a.m.SLU Castries George F. L. Charle-YUL Montreal Pierre Elliott Trudeau Intl

20h 15m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl

C$ 876Multiple Airlines

Sun, 10 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

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$ 886Multiple 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$ 886Multiple Airlines

Recent one-way flight deals from Montreal to Castries

Mon, 2 Nov

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

22h 50m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl

C$ 421Multiple Airlines

Thu, 29 Oct

5:35 p.m. - 7:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

25h 25m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl

C$ 446Multiple Airlines

Fri, 18 Dec

8:15 a.m. - 3:15 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

30h 00m1 stop Bridgetown Grantley Adams Intl

C$ 501Multiple Airlines

Thu, 29 Oct

9:35 p.m. - 7:00 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

21h 25m3 stops Ottawa Toronto Pearson Intl Bridgetown Grantley Adams Intl

C$ 516Multiple Airlines

Thu, 29 Oct

8:55 a.m. - 5:15 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

8h 20m1 stop Pointe-à-Pitre Le Raizet

C$ 588Multiple Airlines

Fri, 25 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

C$ 609Multiple Airlines

Fri, 25 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

C$ 609Multiple Airlines

Wed, 23 Sep

5:00 a.m. - 12:05 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

31h 05m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl

C$ 689Multiple Airlines

Mon, 2 Nov

6:45 a.m. - 8:10 a.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

24h 25m3 stops Toronto Pearson Intl Simpson Bay Princess Juliana Port of Spain Piarco Intl

C$ 729Multiple Airlines

Fri, 25 Dec

6:45 a.m. - 1:10 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SLU Castries George F. L. Charle

29h 25m3 stops Toronto Pearson Intl Simpson Bay Princess Juliana Kingstown Argyle Intl

C$ 744Multiple 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$ 1,116. 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$ 421

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 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. 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$ 1,115 round-trip on average, while Monday is the most expensive at C$ 2,193, a difference of C$ 1,078. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
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$ 866 to C$ 4,397. 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$ 623, which is 7% 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

If your dates are flexible, aim for a Thursday departure instead of Monday. On this route, Thursday flights average C$ 1,115 – about C$ 1,078 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$ 421 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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