Find flights
When to book
FAQs

Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries from C$ 1,121

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/4. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — SLU
10 Apr — 17 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Pierre Elliott Trudeau Intl to Castries

Enter your travel dates to find the best prices.

Cheapest flights from Pierre Elliott Trudeau Intl to Castries
Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 March 2026.

Sun 26/47:00 a.m.
YUL
-
SLU
1 stop10h 15m
Multiple Airlines
Sat 2/55:50 p.m.
SLU
-
YUL
2 stops24h 30m
Multiple Airlines
Deal found 6/3C$ 1,121
Tue 5/57:00 a.m.
YUL
-
SLU
2 stops11h 25m
Multiple Airlines
Tue 12/59:10 a.m.
SLU
-
YUL
2 stops22h 35m
Multiple Airlines
Deal found 6/3C$ 1,150
Sun 19/47:00 a.m.
YUL
-
SLU
1 stop10h 15m
Multiple Airlines
Sun 26/46:00 p.m.
SLU
-
YUL
2 stops30h 25m
Multiple Airlines
Deal found 10/3C$ 1,185
Sat 20/67:20 p.m.
YUL
-
SLU
2 stops23h 40m
Multiple Airlines
Sun 5/79:10 a.m.
SLU
-
YUL
2 stops15h 15m
Multiple Airlines
Deal found 7/3C$ 1,193
Fri 1/57:20 p.m.
YUL
-
SLU
2 stops17h 50m
Multiple Airlines
Fri 8/56:00 p.m.
SLU
-
YUL
2 stops30h 25m
Multiple Airlines
Deal found 6/3C$ 1,203
Fri 24/47:45 p.m.
YUL
-
SLU
3 stops26h 25m
Multiple Airlines
Fri 1/56:00 p.m.
SLU
-
YUL
3 stops23h 26m
Multiple Airlines
Deal found 7/3C$ 1,207
Sun 12/47:30 a.m.
YUL
-
SLU
2 stops9h 45m
Multiple Airlines
Sat 18/45:50 p.m.
SLU
-
YUL
2 stops19h 55m
Multiple Airlines
Deal found 7/3C$ 1,240
Thu 30/47:00 a.m.
YUL
-
SLU
1 stop10h 05m
Multiple Airlines
Sun 10/56:00 p.m.
SLU
-
YUL
2 stops30h 25m
Multiple Airlines
Deal found 6/3C$ 1,265

Find flight deals from Pierre Elliott Trudeau Intl to Castries

Discover tips and strategies to find the most affordable flight options for your journey from Pierre Elliott Trudeau Intl (YUL) to Castries (SLU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 March 2026.

Round-trip from

C$ 1,121
26/4-2/5
  • 26/4-2/5
  • 3 total stops
  • 34h 45m total
  • Montreal to Castries
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pierre Elliott Trudeau Intl to Castries that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 11 March 2026.
Use the filters below to find and compare flights from Montreal Pierre Elliott Trudeau Intl Airport to Castries that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

MontrealCastries

YUL - SLU

YULSLU

Montreal Pierre Elliott Trudeau Intl

Sun 12/4

7:30 a.m.-5:15 p.m.

2 stops9h 45m

Castries George F. L. Charle

Sat 18/4

5:50 p.m.-1:45 p.m.

2 stops19h 55m

C$ 1,240

MontrealCastries

YUL - SLU

YULSLU

Montreal Pierre Elliott Trudeau Intl

Sat 18/4

7:45 p.m.-2:35 p.m.

2 stops18h 50m

Castries George F. L. Charle

Sat 25/4

12:35 p.m.-12:25 a.m.

3 stops35h 50m

C$ 1,423

MontrealCastries

YUL - SLU

YULSLU

Montreal Pierre Elliott Trudeau Intl

Tue 31/3

10:30 p.m.-7:00 p.m.

2 stops20h 30m

Castries George F. L. Charle

Tue 7/4

7:10 p.m.-10:36 a.m.

2 stops15h 26m

C$ 1,601

MontrealCastries

YUL - SLU

YULSLU

Montreal Pierre Elliott Trudeau Intl

Fri 17/7

6:00 a.m.-7:00 p.m.

2 stops13h 00m

Castries George F. L. Charle

Fri 24/7

9:10 a.m.-6:50 a.m.

3 stops21h 40m

C$ 1,637

MontrealCastries

YUL - SLU

YULSLU

Montreal Pierre Elliott Trudeau Intl

Thu 2/4

10:30 p.m.-7:00 p.m.

2 stops20h 30m

Castries George F. L. Charle

Wed 8/4

9:10 a.m.-1:51 a.m.

2 stops16h 41m

C$ 1,667

MontrealCastries

YUL - SLU

YULSLU

Montreal Pierre Elliott Trudeau Intl

Wed 8/4

11:00 p.m.-5:15 p.m.

2 stops42h 15m

Castries George F. L. Charle

Sun 26/4

3:20 p.m.-9:00 p.m.

2 stops29h 40m

C$ 1,700

MontrealCastries

YUL - SLU

YULSLU

Montreal Pierre Elliott Trudeau Intl

Fri 3/4

11:00 p.m.-5:15 p.m.

2 stops42h 15m

Castries George F. L. Charle

Sun 26/4

3:20 p.m.-9:00 p.m.

2 stops29h 40m

C$ 1,709

MontrealCastries

YUL - SLU

YULSLU

Montreal Pierre Elliott Trudeau Intl

Mon 10/8

8:00 p.m.-3:35 p.m.

2 stops19h 35m

Castries George F. L. Charle

Mon 17/8

7:10 p.m.-3:25 p.m.

3 stops20h 15m

C$ 1,791

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Sorted by cheapest first

Best time to book a flight from Pierre Elliott Trudeau Intl to Castries

Have a flexible travel schedule? Discover the best time to fly to Castries from Pierre Elliott Trudeau Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Montreal Pierre Elliott Trudeau Intl Airport to Castries

What is the cheapest month to book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Castries?

Currently, July is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Castries (average of C$ 297). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Castries in October is currently the most expensive (average of C$ 1,138). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Pierre Elliott Trudeau Intl to Castries. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Castries from Montreal Pierre Elliott Trudeau Intl?

    For a flight from Montreal Pierre Elliott Trudeau Intl to Castries, you will be flying into George F. L. Charle. Castries George F. L. Charle (SLU) is just 1.2 km from the centre of the city. George F. L. Charle is the only Castries airport and it handles 0 inbound flights from Montreal Pierre Elliott Trudeau Intl per day. 0 airlines have flights to Castries George F. L. Charle from Montreal Pierre Elliott Trudeau Intl on a regular basis.

  • Can I find deals for flights from Pierre Elliott Trudeau Intl to Castries that include hotel bookings?

    Yes. In addition to deals on Pierre Elliott Trudeau Intl to Castries flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Pierre Elliott Trudeau Intl to Castries?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pierre Elliott Trudeau Intl to Castries.

  • Can I find deals for business class flights from Pierre Elliott Trudeau Intl to Castries?

    Yes. Cheapflights offers flight deals from Pierre Elliott Trudeau Intl to Castries by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Castries?

    Currently, July is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Castries (average of C$ 297). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Castries in October is currently the most expensive (average of C$ 1,138). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Castries?

Book flights to Castries if you plan to visit one of these locations
Gros Islet
Marigot Bay

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Pierre Elliott Trudeau Intl to Castries

See prices for flight routes from nearby airports that may be better suited for you.
Pierre Elliott Trudeau Intl to Castries flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Pierre Elliott Trudeau Intl to Castries?

Cheapflights makes it easy to find Pierre Elliott Trudeau Intl to Castries flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Pierre Elliott Trudeau Intl to Castries?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Castries from Pierre Elliott Trudeau Intl.

Can Cheapflights find flights from Pierre Elliott Trudeau Intl to Castries with no change fees?

Certainly. Search results for flights to Castries from Pierre Elliott Trudeau Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Pierre Elliott Trudeau Intl to Castries become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Castries from Pierre Elliott Trudeau Intl today and book when prices fit your budget.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.