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Cheap flights from Ontario to Ko Samui from C$ 1,054

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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — USM
27 Feb — 6 Mar1
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 28 January 2026.

Mon 14/96:00 p.m.
YUL
-
USM
2 stops27h 35m
Multiple Airlines
Mon 28/98:35 p.m.
USM
-
YUL
2 stops31h 15m
Multiple Airlines
Deal found 26/1C$ 1,367
Mon 13/46:00 p.m.
YUL
-
USM
2 stops27h 35m
Multiple Airlines
Mon 27/48:35 p.m.
USM
-
YUL
2 stops31h 30m
Multiple Airlines
Deal found 26/1C$ 1,449
Wed 13/51:05 p.m.
YUL
-
USM
2 stops32h 30m
Multiple Airlines
Thu 21/58:35 p.m.
USM
-
YUL
2 stops31h 23m
Multiple Airlines
Deal found 26/1C$ 1,502
Mon 7/91:45 p.m.
YYZ
-
USM
2 stops36h 00m
Multiple Airlines
Fri 6/113:50 p.m.
USM
-
YYZ
2 stops39h 35m
Multiple Airlines
Deal found 27/1C$ 1,523
Fri 10/44:40 p.m.
YYZ
-
USM
2 stops28h 05m
Multiple Airlines
Sat 25/47:45 p.m.
USM
-
YYZ
2 stops32h 17m
Multiple Airlines
Deal found 26/1C$ 1,564
Sat 6/68:00 p.m.
YYZ
-
USM
2 stops25h 35m
Multiple Airlines
Sat 20/69:00 p.m.
USM
-
YYZ
2 stops30h 30m
Multiple Airlines
Deal found 27/1C$ 1,642
Mon 10/86:35 p.m.
YUL
-
USM
2 stops26h 40m
Multiple Airlines
Tue 18/86:25 p.m.
USM
-
YUL
2 stops35h 15m
Multiple Airlines
Deal found 26/1C$ 1,761
Thu 8/103:10 p.m.
YYZ
-
USM
2 stops43h 25m
Etihad Airways
Mon 12/108:50 p.m.
USM
-
YYZ
2 stops47h 10m
Etihad Airways
Deal found 26/1C$ 1,815
Mon 14/94:40 p.m.
YUL
-
USM
2 stops33h 05m
SWISS
Mon 28/94:25 p.m.
USM
-
YUL
3 stops32h 25m
SWISS
Deal found 26/1C$ 1,949
Thu 8/102:55 p.m.
YYZ
-
USM
2 stops55h 25m
Emirates
Mon 12/108:45 a.m.
USM
-
YYZ
2 stops35h 45m
Emirates
Deal found 27/1C$ 2,138
Mon 23/212:40 p.m.
YYZ
-
USM
3 stops31h 20m
Multiple Airlines
Mon 2/36:05 p.m.
USM
-
YYZ
2 stops32h 20m
Multiple Airlines
Deal found 26/1C$ 2,165
Wed 25/26:25 p.m.
YUL
-
USM
2 stops28h 35m
Multiple Airlines
Sat 7/37:45 p.m.
USM
-
YUL
2 stops32h 15m
Multiple Airlines
Deal found 26/1C$ 2,296

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 28 January 2026.

Round-trip from

C$ 1,449

One-way from

C$ 1,054
13/4-27/4
  • 13/4-27/4
  • 4 total stops
  • 59h 05m total
  • Ontario to Ko Samui
Search Deals
12/3
  • 12/3
  • 2 total stops
  • 29h 15m 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 28 January 2026.
Use the filters below to find and compare flights from Ontario to Ko Samui that are best for you.

Fly from

Ontario

Fly to

Ko Samui

Route

Depart

Return

Price

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Mon 13/4

6:00 p.m.-8:35 a.m.

2 stops27h 35m

Ko Samui

Mon 27/4

8:35 p.m.-5:05 p.m.

2 stops31h 30m

C$ 1,449

TorontoKo Samui

YYZ - USM

YYZUSM

Toronto Pearson Intl

Sat 6/6

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

2 stops25h 35m

Ko Samui

Sat 20/6

9:00 p.m.-4:30 p.m.

2 stops30h 30m

C$ 1,642

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Wed 13/5

6:35 p.m.-5:45 p.m.

2 stops36h 10m

Ko Samui

Thu 21/5

7:45 p.m.-11:10 a.m.

3 stops26h 25m

C$ 2,201

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Wed 25/2

6:25 p.m.-11:00 a.m.

2 stops28h 35m

Ko Samui

Sat 7/3

7:45 p.m.-4:00 p.m.

2 stops32h 15m

C$ 2,296

TorontoKo Samui

YYZ - USM

YYZUSM

Toronto Pearson Intl

Sun 8/3

2:30 p.m.-7:30 a.m.

2 stops30h 00m

Ko Samui

Sun 15/3

7:00 p.m.-8:50 a.m.

2 stops48h 50m

C$ 2,381

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Wed 25/2

8:50 p.m.-9:20 p.m.

2 stops36h 30m

Ko Samui

Sat 7/3

8:15 a.m.-2:05 p.m.

2 stops65h 50m

C$ 2,387

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Wed 18/2

6:25 p.m.-11:00 a.m.

2 stops28h 35m

Ko Samui

Fri 6/3

7:45 p.m.-5:00 p.m.

2 stops33h 15m

C$ 2,396

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Sat 7/3

6:20 p.m.-8:40 a.m.

2 stops26h 20m

Ko Samui

Sat 21/3

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

2 stops30h 04m

C$ 2,407

TorontoKo Samui

YYZ - USM

YYZUSM

Toronto Pearson Intl

Sat 14/2

10:35 p.m.-5:10 p.m.

2 stops54h 35m

Ko Samui

Thu 26/2

6:05 p.m.-4:09 p.m.

2 stops34h 04m

C$ 2,437

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Mon 13/4

6:35 p.m.-1:45 p.m.

3 stops32h 10m

Ko Samui

Mon 27/4

4:25 p.m.-1:50 p.m.

3 stops32h 25m

C$ 2,702

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/1

Showing 1-10 of 22 results
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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

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

Find hourly flight availability from Ontario 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 28 January 2026.

It’s typically best to fly out from Region of Ontario to Ko Samui in the afternoon. Doing so could potentially save you 15% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Region of Ontario to Ko Samui?

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

Travelers seeking maximum savings on their Region of Ontario to Ko Samui flight should consider departing on Saturday afternoons when fares are most often at their lowest. Saturday evenings 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 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 30h. 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

Browse thousands of different options on Cheapflights for your next trip

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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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Prince George to Suvarnabhumi flights
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Fredericton to Suvarnabhumi flights
Saskatoon to Phuket City flights
Kelowna to Phuket City flights
Pierre Elliott Trudeau Intl to Chiang Mai flights
Halifax to Don Mueang Intl flights
Edmonton to Chiang Mai flights
Penticton to Suvarnabhumi flights
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Top airline flying from Ontario to Ko Samui

Discover the top airline that operate flights from Ontario 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 28 January 2026.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapestC$ 1,871AverageC$ 2,059FlexibilityNo cancel feeOn-time74%
Search EVA Air 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 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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