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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Ko Samui from C$ 1,831

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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — USM
11 Jan — 18 Jan1
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.

Best flights from Pierre Elliott Trudeau Intl to Ko Samui
Discover carefully curated flight deals from Pierre Elliott Trudeau Intl to Ko Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 12 December 2025.

Tue 6/17:30 a.m.YUL - USM
3 stops36h 15mMultiple Airlines
Tue 20/111:40 a.m.USM - YUL
2 stops31h 04mMultiple Airlines
Deal found 10/12C$ 1,831
Wed 18/28:50 p.m.YUL - USM
2 stops25h 45mQatar Airways
Fri 6/38:20 p.m.USM - YUL
2 stops53h 45mQatar Airways
Deal found 10/12C$ 2,212
Wed 25/28:50 p.m.YUL - USM
2 stops25h 45mQatar Airways
Sat 7/38:20 p.m.USM - YUL
2 stops53h 45mQatar Airways
Deal found 10/12C$ 2,244
Sat 17/16:20 p.m.YUL - USM
2 stops28h 15mMultiple Airlines
Mon 2/211:40 a.m.USM - YUL
2 stops31h 04mMultiple Airlines
Deal found 11/12C$ 2,315
Thu 2/410:40 p.m.YUL - USM
2 stops22h 35mMultiple Airlines
Mon 6/47:45 p.m.USM - YUL
2 stops32h 20mMultiple Airlines
Deal found 11/12C$ 2,322
Mon 12/18:50 p.m.YUL - USM
2 stops25h 45mQatar Airways
Fri 23/18:20 p.m.USM - YUL
2 stops53h 45mQatar Airways
Deal found 10/12C$ 2,576
Sun 11/18:50 p.m.YUL - USM
2 stops25h 45mQatar Airways
Wed 21/18:20 p.m.USM - YUL
2 stops53h 45mQatar Airways
Deal found 10/12C$ 2,576

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 12 December 2025.

Round-trip from

C$ 1,831
6/1-20/1
  • 6/1-20/1
  • 5 total stops
  • 67h 19m 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 12 December 2025.
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

Pierre Elliott Trudeau Intl

Fly to

Ko Samui

Route

Depart

Return

Price

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Tue 6/1

7:30 a.m.-7:45 a.m.

3 stops36h 15m

Ko Samui

Tue 20/1

11:40 a.m.-6:44 a.m.

2 stops31h 04m

C$ 1,831

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Wed 18/2

8:50 p.m.-10:35 a.m.

2 stops25h 45m

Ko Samui

Fri 6/3

8:20 p.m.-2:05 p.m.

2 stops53h 45m

C$ 2,212

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Wed 25/2

8:50 p.m.-10:35 a.m.

2 stops25h 45m

Ko Samui

Sat 7/3

8:20 p.m.-2:05 p.m.

2 stops53h 45m

C$ 2,244

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Sat 17/1

6:20 p.m.-10:35 a.m.

2 stops28h 15m

Ko Samui

Mon 2/2

11:40 a.m.-6:44 a.m.

2 stops31h 04m

C$ 2,315

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Thu 2/4

10:40 p.m.-8:15 a.m.

2 stops22h 35m

Ko Samui

Mon 6/4

7:45 p.m.-5:05 p.m.

2 stops32h 20m

C$ 2,322

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Mon 12/1

8:50 p.m.-10:35 a.m.

2 stops25h 45m

Ko Samui

Fri 23/1

8:20 p.m.-2:05 p.m.

2 stops53h 45m

C$ 2,576

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Sun 11/1

8:50 p.m.-10:35 a.m.

2 stops25h 45m

Ko Samui

Wed 21/1

8:20 p.m.-2:05 p.m.

2 stops53h 45m

C$ 2,576

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

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 12 December 2025.

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.

Reviews of airlines servicing Ko Samui

Get insights into the airlines that provide service to Ko Samui. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ko Samui. Reviews last updated 12 December 2025.
Read through reviews of airlines operating flights from Montreal Pierre Elliott Trudeau Intl Airport to Ko Samui, such as Qatar Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Qatar Airways
7.4
Good
3,677 reviews
Check prices

Comfort

7.4

Boarding

7.5

Food

7.3

Crew

7.9

Entertainment

7.4

Overall

7.4

Reviews

1 / 20
6.0
Good

Mohamed,Jul 2025

BKK - DOH

boarding process was smooth, Crew was excellent. i booked Comfort+ the seat was good but very old and the entertainment screen get stuck and difficult to control again maybe because its old device brought from other old airplanes not belong to Qatar Airways new fleets. Food is not at all matching the hype of Qatarairways, what i had in Emirates or Etihad economy class is way better.
Qatar Airways
7.4
Good
3,677 reviews
Qatar Airways
7.4
Good
3,677 reviews
Check prices

Comfort

7.4

Boarding

7.5

Food

7.3

Crew

7.9

Entertainment

7.4

Overall

7.4

Reviews

1 / 20
6.0
Good

Mohamed,Jul 2025

BKK - DOH

boarding process was smooth, Crew was excellent. i booked Comfort+ the seat was good but very old and the entertainment screen get stuck and difficult to control again maybe because its old device brought from other old airplanes not belong to Qatar Airways new fleets. Food is not at all matching the hype of Qatarairways, what i had in Emirates or Etihad economy class is way better.

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 1 airline.

  • 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 25h 45m. The distance from Montreal Pierre Elliott Trudeau Intl Airport to Ko Samui is about 13858 km.

  • What is the cheapest airline to fly from Montreal Pierre Elliott Trudeau Intl Airport to Ko Samui round-trip?

    Cheapflights users have booked flights from Montreal Pierre Elliott Trudeau Intl Airport to Ko Samui round-trip from C$ 2,019.

  • 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

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Pierre Elliott Trudeau Intl to Ko Samui

Discover the top airline that operate flights from Pierre Elliott Trudeau Intl to Ko Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapestC$ 2,019AverageC$ 2,761FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights

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

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Pierre Elliott Trudeau Intl to Ko Samui flexibly with Cheapflights today.

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