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Cheap flights from Ontario to Ko Samui from C$ 851

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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — USM
29 Aug — 5 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to Ko Samui

Enter your travel dates to find the best prices.

Cheapest flights from Ontario to Ko Samui
Explore the most affordable flight options available from Ontario to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 July 2026.

Mon 21/98:30 p.m.
YYZ
-
USM
2 stops57h 50m
Multiple Airlines
Mon 28/97:45 p.m.
USM
-
YYZ
2 stops31h 38m
Multiple Airlines
Deal found 27/7C$ 1,628
Tue 8/94:30 p.m.
YUL
-
USM
2 stops30h 40m
Multiple Airlines
Wed 16/96:15 p.m.
USM
-
YUL
2 stops41h 24m
Multiple Airlines
Deal found 25/7C$ 1,736
Thu 22/106:00 p.m.
YUL
-
USM
2 stops29h 10m
Multiple Airlines
Sat 7/117:45 p.m.
USM
-
YUL
2 stops35h 50m
Multiple Airlines
Deal found 29/7C$ 1,762
Fri 23/106:00 p.m.
YUL
-
USM
2 stops30h 00m
Multiple Airlines
Sat 7/117:45 p.m.
USM
-
YUL
2 stops33h 19m
Multiple Airlines
Deal found 26/7C$ 1,781
Sun 22/116:45 p.m.
YYZ
-
USM
3 stops37h 40m
Multiple Airlines
Mon 30/118:30 a.m.
USM
-
YYZ
3 stops56h 40m
Multiple Airlines
Deal found 26/7C$ 1,905
Sat 21/111:55 p.m.
YYZ
-
USM
2 stops29h 15m
Multiple Airlines
Sat 28/117:00 a.m.
USM
-
YYZ
2 stops41h 15m
Multiple Airlines
Deal found 26/7C$ 1,987
Fri 20/1112:15 a.m.
YYZ
-
USM
2 stops32h 10m
EVA Air
Sat 28/117:55 a.m.
USM
-
YYZ
2 stops24h 25m
EVA Air
Deal found 26/7C$ 2,063
Wed 16/91:45 a.m.
YYZ
-
USM
2 stops31h 45m
EVA Air
Mon 21/99:15 a.m.
USM
-
YYZ
2 stops23h 05m
EVA Air
Deal found 28/7C$ 2,095
Mon 28/91:45 a.m.
YYZ
-
USM
2 stops26h 00m
EVA Air
Thu 1/108:45 a.m.
USM
-
YYZ
2 stops23h 35m
EVA Air
Deal found 26/7C$ 2,132
Sat 22/87:45 p.m.
YUL
-
USM
2 stops25h 30m
Multiple Airlines
Sat 5/97:45 p.m.
USM
-
YUL
2 stops32h 15m
Multiple Airlines
Deal found 29/7C$ 2,136
Mon 28/99:35 p.m.
YUL
-
USM
2 stops26h 30m
Qatar Airways
Thu 1/103:50 p.m.
USM
-
YUL
2 stops33h 55m
Qatar Airways
Deal found 25/7C$ 2,187
Tue 29/1212:15 a.m.
YYZ
-
USM
2 stops27h 25m
EVA Air
Tue 12/19:10 p.m.
USM
-
YYZ
2 stops35h 10m
EVA Air
Deal found 28/7C$ 2,325

Find flight deals from Ontario to Ko Samui

Keep the following information in mind while searching for Ontario to Ko Samui flight deals. Data was last updated 30 July 2026.

Round-trip from

C$ 1,628

One-way from

C$ 851
21/9-28/9
  • 21/9-28/9
  • 4 total stops
  • 89h 28m total
  • Ontario to Ko Samui
Search Deals
10/9
  • 10/9
  • 3 total stops
  • 57h 25m total
  • Ontario to Ko Samui
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario 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 30 July 2026.
Use the filters below to find and compare flights from Ontario 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

Fri 23/10

6:00 p.m.-11:00 a.m.

2 stops30h 00m

Ko Samui

Sat 7/11

7:45 p.m.-5:04 p.m.

2 stops33h 19m

C$ 1,781

TorontoKo Samui

YYZ - USM

YYZUSM

Toronto Pearson Intl

Sat 21/11

1:55 p.m.-7:10 a.m.

2 stops29h 15m

Ko Samui

Sat 28/11

7:00 a.m.-12:15 p.m.

2 stops41h 15m

C$ 1,987

TorontoKo Samui

YYZ - USM

YYZUSM

Toronto Pearson Intl

Wed 16/9

1:45 a.m.-8:30 p.m.

2 stops31h 45m

Ko Samui

Mon 21/9

9:15 a.m.-9:20 p.m.

2 stops23h 05m

C$ 2,095
Quickest round-trip

TorontoKo Samui

YYZ - USM

YYZUSM

Toronto Pearson Intl

Fri 20/11

12:15 a.m.-3:35 p.m.

2 stops27h 20m

Ko Samui

Sat 28/11

10:00 a.m.-8:20 p.m.

2 stops22h 20m

C$ 2,139

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Mon 28/9

9:35 p.m.-11:05 a.m.

2 stops26h 30m

Ko Samui

Thu 1/10

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

2 stops33h 55m

C$ 2,187

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Tue 8/9

9:55 p.m.-2:45 p.m.

3 stops29h 50m

Ko Samui

Wed 16/9

9:15 a.m.-12:31 a.m.

3 stops26h 16m

C$ 2,283

TorontoKo Samui

YYZ - USM

YYZUSM

Toronto Pearson Intl

Tue 29/12

12:15 a.m.-3:35 p.m.

2 stops27h 20m

Ko Samui

Tue 12/1

9:10 p.m.-8:20 p.m.

2 stops35h 10m

C$ 2,356

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Sat 22/8

9:30 p.m.-1:45 p.m.

3 stops29h 15m

Ko Samui

Thu 10/9

8:45 a.m.-12:31 a.m.

3 stops26h 46m

C$ 2,426

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Thu 15/10

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

2 stops47h 55m

Ko Samui

Mon 19/10

4:25 p.m.-8:00 a.m.

2 stops50h 35m

C$ 2,440

TorontoKo Samui

YYZ - USM

YYZUSM

Toronto Pearson Intl

Wed 16/9

1:50 a.m.-7:40 p.m.

1 stop30h 50m

Ko Samui

Mon 21/9

6:00 a.m.-10:10 p.m.

2 stops27h 10m

C$ 2,497

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/7

Showing 1-10 of 34 resultsSorted by cheapest first
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Best time to book a flight from Ontario to Ko Samui

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

No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Ontario 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 Ontario?

    Ko Samui (USM) is the airport you will fly into if you book a flight from Ontario to Ko Samui. It is only a 3.3 km journey from Ko Samui (USM) to Ko Samui’s city centre.

  • How long is the flight from Region of Ontario to Ko Samui?

    Departing from Region of Ontario to Ko Samui will take you 31h 45m. The distance from Region of Ontario to Ko Samui is about 14087 km.

  • What are the most popular routes from Region of Ontario to Ko Samui?

    The most popular route from Region of Ontario to Ko Samui is Montreal Pierre Elliott Trudeau Intl - Ko Samui. You may also consider Toronto Pearson Intl - Ko Samui or Toronto Island - Ko Samui.

  • Can I find deals for flights from Ontario to Ko Samui that include hotel bookings?

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

  • How can I find direct flights from Ontario to Ko Samui?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Ko Samui.

  • Can I find deals for business class flights from Ontario to Ko Samui?

    Yes. Cheapflights offers flight deals from Ontario 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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Alternative routes for Ontario to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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How does Cheapflights help users find flights from Ontario to Ko Samui?

Cheapflights makes it easy to find Ontario to Ko Samui 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 Ontario to Ko Samui?

Cheapflights simply makes it quick and affordable to book flights from Ontario to Ko Samui by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Ontario to Ko Samui with no change fees?

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

Can Cheapflights notify me if prices for flights from Ontario to Ko Samui become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Ko Samui from Ontario today and book when prices fit your budget.

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