Canada
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YUL - SLU

C$ 494 Find Cheap Flights from Montreal to Castries – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
C$ 926
Typical prices: C$ 1,308-C$ 2,225
Multiple Airlines
Fri 26/10Thu 1/11
YUL - SLU • 2 stops
Cheapest one-way flights
C$ 494
Typical prices: C$ 506-C$ 673
Multiple Airlines
Wed 14/11
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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We hope you enjoy your trip to Castries!
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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.

Recent round-trip flight deals from Montreal to Castries

Mon, 26 Oct - Sun, 1 Nov
Multiple Airlines Logo
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
Multiple Airlines Logo
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$ 926Multiple Airlines
Mon, 26 Oct - Sun, 1 Nov
Multiple Airlines Logo
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
Multiple Airlines Logo
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$ 936Multiple Airlines
Mon, 26 Oct - Sun, 1 Nov
Multiple Airlines Logo
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
Multiple Airlines Logo
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$ 937Multiple Airlines
Mon, 26 Oct - Sun, 1 Nov
Multiple Airlines Logo
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
Multiple Airlines Logo
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$ 953Multiple Airlines
Sat, 14 Nov - Sat, 28 Nov
Multiple Airlines Logo
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
Multiple Airlines Logo
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$ 961Multiple Airlines
Mon, 26 Oct - Sun, 1 Nov
Multiple Airlines Logo
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
Multiple Airlines Logo
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$ 964Multiple Airlines
Mon, 26 Oct - Sun, 1 Nov
Multiple Airlines Logo
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
Multiple Airlines Logo
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$ 977Multiple Airlines
Mon, 26 Oct - Sun, 1 Nov
Multiple Airlines Logo
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
Multiple Airlines Logo
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$ 978Multiple Airlines
Mon, 26 Oct - Sun, 1 Nov
Multiple Airlines Logo
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
Multiple Airlines Logo
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$ 991Multiple Airlines
Mon, 26 Oct - Sun, 1 Nov
Multiple Airlines Logo
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
Multiple Airlines Logo
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$ 991Multiple 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$ 1,132. 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.

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

Cheapest flight

C$ 494
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

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

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • 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$ 926 to C$ 4,714. 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$ 586, which is 13% 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$ 1,132 round-trip on average, while Monday is the most expensive at C$ 2,225, a difference of C$ 1,093. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Thursday departure instead of Monday. On this route, Thursday flights average C$ 1,132 – about C$ 1,093 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

More options for your flight from Montreal to Castries

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

Car rentals in Castries
Hotels in Castries