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Cheap flights from Ontario to Kos from C$ 1,365

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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — KGS
4 Jun — 11 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to Kos

Enter your travel dates to find the best prices.

Cheapest flights from Ontario to Kos
Explore the most affordable flight options available from Ontario to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 May 2026.

Wed 9/98:25 p.m.
YUL
-
KGS
1 stop13h 25m
Multiple Airlines
Tue 15/92:50 p.m.
KGS
-
YUL
2 stops33h 30m
Multiple Airlines
Deal found 2/5C$ 1,365
Mon 7/95:20 p.m.
YUL
-
KGS
1 stop17h 10m
Multiple Airlines
Tue 15/910:40 p.m.
KGS
-
YUL
2 stops26h 30m
Multiple Airlines
Deal found 2/5C$ 1,399
Tue 8/95:20 p.m.
YUL
-
KGS
1 stop15h 40m
Multiple Airlines
Tue 15/910:40 p.m.
KGS
-
YUL
2 stops26h 30m
Multiple Airlines
Deal found 2/5C$ 1,400
Mon 7/94:40 p.m.
YUL
-
KGS
1 stop20h 00m
SWISS
Tue 15/98:30 p.m.
KGS
-
YUL
1 stop25h 30m
SWISS
Deal found 2/5C$ 1,418
Mon 27/77:45 p.m.
YYZ
-
KGS
1 stop21h 50m
Multiple Airlines
Tue 18/86:00 a.m.
KGS
-
YYZ
1 stop19h 50m
Multiple Airlines
Deal found 3/5C$ 1,445
Wed 19/84:30 p.m.
YYZ
-
KGS
2 stops20h 50m
Multiple Airlines
Wed 30/98:40 p.m.
KGS
-
YYZ
1 stop23h 10m
Multiple Airlines
Deal found 3/5C$ 1,475
Fri 4/96:45 a.m.
YUL
-
KGS
2 stops30h 45m
Multiple Airlines
Sun 27/96:10 p.m.
KGS
-
YUL
2 stops26h 50m
Multiple Airlines
Deal found 1/5C$ 1,499
Wed 9/96:35 p.m.
YUL
-
KGS
2 stops37h 35m
SWISS
Tue 15/98:30 p.m.
KGS
-
YUL
2 stops25h 15m
SWISS
Deal found 2/5C$ 1,526

Find flight deals from Ontario to Kos

Keep the following information in mind while searching for Ontario to Kos flight deals. Data was last updated 5 May 2026.

Round-trip from

C$ 1,365
9/9-15/9
  • 9/9-15/9
  • 3 total stops
  • 46h 55m total
  • Ontario to Kos
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Kos 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 5 May 2026.
Use the filters below to find and compare flights from Ontario to Kos that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealKos

YUL - KGS

YULKGS

Montreal Pierre Elliott Trudeau Intl

Mon 7/9

4:40 p.m.-7:40 p.m.

1 stop20h 00m

Kos

Tue 15/9

8:30 p.m.-3:00 p.m.

1 stop25h 30m

C$ 1,418
Quickest round-trip

TorontoKos

YYZ - KGS

YYZKGS

Toronto Pearson Intl

Mon 27/7

7:45 p.m.-12:35 a.m.

1 stop21h 50m

Kos

Tue 18/8

6:00 a.m.-6:50 p.m.

1 stop19h 50m

C$ 1,445

MontrealKos

YUL - KGS

YULKGS

Montreal Pierre Elliott Trudeau Intl

Tue 8/9

5:20 p.m.-12:35 a.m.

1 stop24h 15m

Kos

Tue 15/9

6:10 p.m.-2:40 p.m.

1 stop27h 30m

C$ 1,465

TorontoKos

YYZ - KGS

YYZKGS

Toronto Pearson Intl

Wed 19/8

4:30 p.m.-8:20 p.m.

2 stops20h 50m

Kos

Wed 30/9

8:40 p.m.-12:50 p.m.

1 stop23h 10m

C$ 1,475

MontrealKos

YUL - KGS

YULKGS

Montreal Pierre Elliott Trudeau Intl

Wed 9/9

6:35 p.m.-3:10 p.m.

2 stops37h 35m

Kos

Tue 15/9

8:30 p.m.-2:45 p.m.

2 stops25h 15m

C$ 1,526

MontrealKos

YUL - KGS

YULKGS

Montreal Pierre Elliott Trudeau Intl

Fri 4/9

8:40 p.m.-7:45 p.m.

1 stop16h 05m

Kos

Sun 27/9

3:15 p.m.-3:00 p.m.

1 stop30h 45m

C$ 1,555

MontrealKos

YUL - KGS

YULKGS

Montreal Pierre Elliott Trudeau Intl

Mon 8/6

10:15 a.m.-5:30 p.m.

2 stops24h 15m

Kos

Fri 12/6

1:05 p.m.-8:00 a.m.

2 stops25h 55m

C$ 5,722
Cheapest one-way
Quickest one-way

TorontoKos

YYZ - KGS

YYZKGS

Toronto Pearson Intl

Sun 14/6

2:55 p.m.-5:30 p.m.

2 stops43h 35m

C$ 1,672

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/4

Sorted by cheapest first

Best time to book a flight from Ontario to Kos

Have a flexible travel schedule? Discover the best time to fly to Kos 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 Kos
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 Kos. 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 Kos from Ontario?

    Most people fly into Kos (KGS) if they book a flight to Kos from Ontario. Kos is conveniently located just 20.6 km from Kos’s city centre.

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

    Departing from Region of Ontario to Kos will take you 20h. The distance from Region of Ontario to Kos is about 7918 km.

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

    The most popular flight routes from Region of Ontario to Kos are Montreal Pierre Elliott Trudeau Intl - Kos, Toronto Pearson Intl - Kos and Toronto Island - Kos.

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

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

  • How can I find direct flights from Ontario to Kos?

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

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

    Yes. Cheapflights offers flight deals from Ontario to Kos 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

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How does Cheapflights help users find flights from Ontario to Kos?

When you search for this flight from Ontario to Kos, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Kos?

Cheapflights simply makes it quick and affordable to book flights from Ontario to Kos 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 Kos with no change fees?

Certainly. Search results for flights to Kos from Ontario shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

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

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