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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Ko Samui from C$ 1,528

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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — USM
10 Jul — 17 Jul1
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 June 2026.

Thu 10/912:40 p.m.
YUL
-
USM
2 stops31h 30m
Multiple Airlines
Tue 22/97:45 p.m.
USM
-
YUL
2 stops32h 15m
Multiple Airlines
Deal found 8/6C$ 1,528
Mon 24/86:35 p.m.
YUL
-
USM
2 stops26h 40m
Multiple Airlines
Wed 23/98:50 p.m.
USM
-
YUL
2 stops31h 10m
Multiple Airlines
Deal found 9/6C$ 1,606
Thu 1/1012:40 p.m.
YUL
-
USM
2 stops31h 30m
Multiple Airlines
Sun 1/117:10 p.m.
USM
-
YUL
2 stops33h 53m
Multiple Airlines
Deal found 9/6C$ 1,846
Fri 23/106:00 p.m.
YUL
-
USM
2 stops27h 00m
Multiple Airlines
Sat 7/114:25 p.m.
USM
-
YUL
2 stops36h 38m
Multiple Airlines
Deal found 7/6C$ 1,928
Mon 17/86:35 p.m.
YUL
-
USM
2 stops26h 10m
Multiple Airlines
Mon 24/87:50 p.m.
USM
-
YUL
2 stops32h 10m
Multiple Airlines
Deal found 10/6C$ 2,011
Mon 17/85:30 p.m.
YUL
-
USM
2 stops27h 15m
Multiple Airlines
Tue 25/89:00 p.m.
USM
-
YUL
2 stops31h 00m
Multiple Airlines
Deal found 10/6C$ 2,016
Tue 18/86:35 p.m.
YUL
-
USM
2 stops26h 10m
Multiple Airlines
Tue 25/89:00 p.m.
USM
-
YUL
2 stops31h 00m
Multiple Airlines
Deal found 10/6C$ 2,048
Thu 12/118:50 p.m.
YUL
-
USM
2 stops30h 45m
Qatar Airways
Mon 16/119:10 p.m.
USM
-
YUL
2 stops28h 55m
Qatar Airways
Deal found 8/6C$ 2,092

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 June 2026.

Round-trip from

C$ 1,528
10/9-22/9
  • 10/9-22/9
  • 4 total stops
  • 63h 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 June 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

Sun 16/8

1:05 p.m.-7:30 a.m.

2 stops31h 25m

Ko Samui

Tue 25/8

9:00 p.m.-5:00 p.m.

2 stops31h 00m

C$ 2,216

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Sat 25/7

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

3 stops35h 25m

Ko Samui

Thu 6/8

7:45 p.m.-7:15 a.m.

3 stops46h 30m

C$ 2,478
Quickest round-trip

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Sat 22/8

9:55 p.m.-1:45 p.m.

3 stops28h 50m

Ko Samui

Thu 10/9

8:45 a.m.-12:36 a.m.

3 stops26h 51m

C$ 2,543

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Sat 22/8

9:55 p.m.-1:45 p.m.

3 stops28h 50m

Ko Samui

Thu 10/9

8:45 a.m.-12:36 a.m.

3 stops26h 51m

C$ 2,557

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Sat 22/8

10:15 a.m.-9:10 p.m.

2 stops47h 55m

Ko Samui

Thu 10/9

8:00 a.m.-8:00 a.m.

2 stops35h 00m

C$ 2,559

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Wed 19/8

9:35 p.m.-8:50 p.m.

2 stops36h 15m

Ko Samui

Tue 25/8

7:50 p.m.-2:45 p.m.

2 stops29h 55m

C$ 2,624

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Mon 17/8

9:35 p.m.-6:15 p.m.

2 stops33h 40m

Ko Samui

Wed 26/8

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

2 stops54h 00m

C$ 2,628

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/6

Sorted by cheapest first

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

How often are flights from Montreal to Ko Samui delayed?

About 26% of weekly flights between Montreal and Ko Samui have experienced delays in the past year, with the average delay time being 118 minutes.

What is the most punctual flight time for Montreal to Ko Samui flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Montreal to Ko Samui flights?

Over the past year, Air Canada has had the lowest number of delays on this route, with just 26% of flights being delayed.

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 28h 50m. 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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