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Cheap flights from Ontario to Ko Samui from C$ 815

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 15/1. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — USM
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 October 2025.

Wed 3/126:20 p.m.YUL - USM
2 stops27h 00mMultiple Airlines
Mon 15/128:30 p.m.USM - YUL
2 stops32h 30mMultiple Airlines
Deal found 28/10C$ 1,588
Wed 19/1112:15 a.m.YYZ - USM
2 stops26h 40mEVA Air
Mon 24/118:45 p.m.USM - YYZ
2 stops35h 35mEVA Air
Deal found 27/10C$ 2,217
Thu 20/116:45 p.m.YYZ - USM
2 stops38h 20mAir France
Mon 24/1111:40 a.m.USM - YYZ
2 stops40h 45mAir France
Deal found 27/10C$ 2,409
Thu 20/117:05 p.m.YUL - USM
2 stops38h 00mAir France
Mon 24/1111:40 a.m.USM - YUL
2 stops39h 40mAir France
Deal found 27/10C$ 2,410
Wed 19/1112:35 a.m.YYZ - USM
1 stop31h 00mCathay Pacific
Mon 24/1111:40 a.m.USM - YYZ
1 stop21h 20mCathay Pacific
Deal found 27/10C$ 2,562
Sat 13/128:10 p.m.YUL - USM
3 stops32h 15mMultiple Airlines
Sat 20/128:30 p.m.USM - YUL
2 stops32h 30mMultiple Airlines
Deal found 28/10C$ 3,048

Cheap 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 October 2025.

Round-trip from

C$ 1,388

One-way from

C$ 815
11/1-21/1
  • 11/1-21/1
  • 4 total stops
  • 62h 30m total
  • Ontario to Ko Samui
Search Deals
15/1
  • 15/1
  • 3 total stops
  • 56h 55m 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 October 2025.
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

Sun 11/1

6:25 p.m.-1:05 p.m.

2 stops30h 40m

Ko Samui

Wed 21/1

9:10 p.m.-5:00 p.m.

2 stops31h 50m

C$ 1,388

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Wed 18/2

6:25 p.m.-6:50 p.m.

2 stops36h 25m

Ko Samui

Fri 6/3

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

2 stops33h 15m

C$ 1,584

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Wed 25/2

9:00 a.m.-11:00 a.m.

2 stops38h 00m

Ko Samui

Sat 7/3

7:45 p.m.-6:25 p.m.

2 stops34h 40m

C$ 1,634

TorontoKo Samui

YYZ - USM

YYZUSM

Toronto Pearson Intl

Fri 30/1

6:45 p.m.-6:15 p.m.

2 stops35h 30m

Ko Samui

Thu 5/2

9:10 p.m.-4:59 p.m.

2 stops31h 49m

C$ 1,641

TorontoKo Samui

YYZ - USM

YYZUSM

Toronto Pearson Intl

Fri 13/2

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

2 stops27h 20m

Ko Samui

Thu 26/2

7:35 p.m.-8:20 p.m.

2 stops36h 45m

C$ 2,208

TorontoKo Samui

YYZ - USM

YYZUSM

Toronto Pearson Intl

Wed 19/11

12:15 a.m.-2:55 p.m.

2 stops26h 40m

Ko Samui

Mon 24/11

8:45 p.m.-8:20 p.m.

2 stops35h 35m

C$ 2,217

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Sat 10/1

6:20 p.m.-11:45 a.m.

2 stops29h 25m

Ko Samui

Thu 22/1

9:10 p.m.-7:25 p.m.

2 stops34h 15m

C$ 2,343

TorontoKo Samui

YYZ - USM

YYZUSM

Toronto Pearson Intl

Thu 20/11

6:45 p.m.-9:05 p.m.

2 stops38h 20m

Ko Samui

Mon 24/11

11:40 a.m.-4:25 p.m.

2 stops40h 45m

C$ 2,410

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Thu 20/11

5:00 p.m.-9:05 p.m.

2 stops40h 05m

Ko Samui

Mon 24/11

11:40 a.m.-12:15 p.m.

2 stops36h 35m

C$ 2,414

MontrealKo Samui

YUL - USM

YULUSM

Montreal Pierre Elliott Trudeau Intl

Sun 11/1

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

2 stops24h 30m

Ko Samui

Wed 21/1

8:30 p.m.-2:05 p.m.

2 stops53h 35m

C$ 2,452

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/10

Showing 1-10 of 21 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 30 October 2025.

It’s typically best to fly out from Region of Ontario to Ko Samui in the afternoon. Doing so could potentially save you 78% on the flight price compared to flying in the evening, 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.

How much does it cost to fly round-trip from Region of Ontario to Ko Samui?

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 27h 20m. 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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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 30 October 2025.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapestC$ 1,911AverageC$ 2,093FlexibilityNo 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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