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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Ko Samui from C$ 939

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/4. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — USM
9 Apr — 16 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Pierre Elliott Trudeau Intl to Ko Samui

Enter your travel dates to find the best prices.

Cheapest flights from Pierre Elliott Trudeau Intl to Ko Samui
Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 March 2026.

Thu 11/66:00 p.m.
YUL
-
USM
2 stops26h 45m
Multiple Airlines
Fri 19/67:45 p.m.
USM
-
YUL
2 stops34h 39m
Multiple Airlines
Deal found 6/3C$ 1,882
Mon 20/48:55 p.m.
YUL
-
USM
2 stops27h 10m
Qatar Airways
Mon 27/48:35 p.m.
USM
-
YUL
2 stops29h 10m
Qatar Airways
Deal found 6/3C$ 1,920
Mon 23/39:50 p.m.
YUL
-
USM
2 stops27h 00m
Multiple Airlines
Mon 13/411:55 a.m.
USM
-
YUL
2 stops37h 50m
Multiple Airlines
Deal found 6/3C$ 2,102
Thu 13/89:30 p.m.
YUL
-
USM
2 stops35h 10m
Multiple Airlines
Sun 30/88:50 p.m.
USM
-
YUL
2 stops31h 09m
Multiple Airlines
Deal found 7/3C$ 2,172
Thu 23/410:15 a.m.
YUL
-
USM
2 stops43h 20m
Emirates
Thu 30/45:50 p.m.
USM
-
YUL
2 stops49h 10m
Emirates
Deal found 9/3C$ 2,288
Thu 17/910:15 a.m.
YUL
-
USM
2 stops47h 55m
Emirates
Mon 21/94:25 p.m.
USM
-
YUL
2 stops50h 35m
Emirates
Deal found 5/3C$ 2,326
Mon 23/39:50 p.m.
YUL
-
USM
2 stops33h 25m
Qatar Airways
Mon 13/411:55 a.m.
USM
-
YUL
2 stops37h 50m
Qatar Airways
Deal found 6/3C$ 2,396

Find flight deals from Pierre Elliott Trudeau Intl to Ko Samui

Discover tips and strategies to find the most affordable flight options for your journey from Pierre Elliott Trudeau Intl (YUL) to Ko Samui (USM). 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 10 March 2026.

Round-trip from

C$ 1,882

One-way from

C$ 939
11/6-19/6
  • 11/6-19/6
  • 4 total stops
  • 61h 24m total
  • Montreal to Ko Samui
Search Deals
21/4
  • 21/4
  • 2 total stops
  • 36h 45m total
  • Montreal to Ko Samui
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pierre Elliott Trudeau Intl to Ko Samui 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 10 March 2026.
Use the filters below to find and compare flights from Montreal Pierre Elliott Trudeau Intl Airport to Ko Samui that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Thu 11/6

6:00 p.m.-7:45 a.m.

2 stops26h 45m

Ko Samui

Fri 19/6

7:45 p.m.-7:24 p.m.

2 stops34h 39m

C$ 1,882

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Thu 23/4

10:15 a.m.-4:35 p.m.

2 stops43h 20m

Ko Samui

Thu 30/4

5:50 p.m.-8:00 a.m.

2 stops49h 10m

C$ 2,288
Quickest round-trip

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Thu 13/8

9:30 p.m.-12:45 p.m.

3 stops28h 15m

Ko Samui

Sun 30/8

7:55 p.m.-4:59 p.m.

2 stops32h 04m

C$ 2,350

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Mon 23/3

9:50 p.m.-6:15 p.m.

2 stops33h 25m

Ko Samui

Mon 13/4

11:55 a.m.-2:45 p.m.

2 stops37h 50m

C$ 2,396

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Sat 21/3

11:40 a.m.-7:45 a.m.

2 stops57h 05m

Ko Samui

Sat 18/4

10:05 a.m.-8:00 a.m.

2 stops32h 55m

C$ 2,574

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Mon 20/4

12:00 p.m.-7:10 a.m.

3 stops32h 10m

Ko Samui

Mon 27/4

8:10 a.m.-8:21 a.m.

3 stops35h 11m

C$ 2,793

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Thu 23/4

12:00 p.m.-7:10 a.m.

3 stops32h 10m

Ko Samui

Thu 30/4

1:30 p.m.-2:45 p.m.

2 stops36h 15m

C$ 2,864

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Sat 21/3

3:45 p.m.-8:25 a.m.

3 stops29h 40m

Ko Samui

Sat 18/4

6:25 p.m.-2:45 p.m.

2 stops31h 20m

C$ 2,905

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Mon 23/3

9:50 p.m.-5:40 p.m.

3 stops32h 50m

Ko Samui

Mon 13/4

3:50 p.m.-2:45 p.m.

3 stops33h 55m

C$ 3,681

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Mon 23/3

9:50 p.m.-5:40 p.m.

3 stops32h 50m

Ko Samui

Mon 13/4

3:50 p.m.-2:45 p.m.

3 stops33h 55m

C$ 4,354

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 13 resultsSorted by cheapest first
1
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Best time to book a flight from Pierre Elliott Trudeau Intl to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui 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 Ko Samui

What is the cheapest time of day to fly from YUL to USM?

Find hourly flight availability from Pierre Elliott Trudeau Intl to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 10 March 2026.

When flying from Montreal Pierre Elliott Trudeau Intl Airport to Ko Samui, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 61% versus a flight at noon.

What is the cheapest day to fly from Montreal Pierre Elliott Trudeau Intl Airport to Ko Samui?

Use this chart to determine the cheapest time to fly round-trip from Pierre Elliott Trudeau Intl to Ko Samui. Price data was last updated on 30 March 2025.

Travelers seeking maximum savings on their Montreal Pierre Elliott Trudeau Intl Airport to Ko Samui flight should consider departing on Tuesday mornings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Pierre Elliott Trudeau Intl to Ko Samui. 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 Ko Samui from Montreal Pierre Elliott Trudeau Intl?

    Located just 3.3 km from the city centre, Ko Samui is the airport most travellers will use when flying to Ko Samui from Montreal Pierre Elliott Trudeau Intl. Booking flights from Montreal Pierre Elliott Trudeau Intl to Ko Samui (USM) should be relatively easy as there are 0 daily inbound flights from Montreal Pierre Elliott Trudeau Intl from 0 different airlines.

  • How long is the flight from Montreal Pierre Elliott Trudeau Intl Airport to Ko Samui?

    Departing from Montreal Pierre Elliott Trudeau Intl Airport to Ko Samui will take you 33h 25m. The distance from Montreal Pierre Elliott Trudeau Intl Airport to Ko Samui is about 13858 km. Both multi-stop and direct flights can be found to your destination and back.

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

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

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

    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 Ko Samui.

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

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

See more FAQs

Travelling to a place near Ko Samui?

Book flights to Ko Samui if you plan to visit one of these locations
Ko Pha Ngan
Ko Tao

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