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Cheap flights from Ontario to Saint Thomas Island from C$ 274

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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STT
28 Feb — 7 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to Saint Thomas Island

Enter your travel dates to find the best prices.

Cheapest flights from Ontario to Saint Thomas Island
Explore the most affordable flight options available from Ontario to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 January 2026.

Mon 23/23:40 p.m.
YYZ
-
STT
1 stop23h 54m
Multiple Airlines
Wed 4/35:40 p.m.
STT
-
YYZ
1 stop27h 15m
Multiple Airlines
Deal found 28/1C$ 430
Mon 9/33:40 p.m.
YYZ
-
STT
1 stop23h 54m
Multiple Airlines
Tue 24/32:36 p.m.
STT
-
YYZ
1 stop9h 38m
Multiple Airlines
Deal found 27/1C$ 433
Mon 9/37:00 a.m.
YYZ
-
STT
1 stop8h 34m
Multiple Airlines
Thu 26/34:35 p.m.
STT
-
YYZ
1 stop30h 45m
Multiple Airlines
Deal found 27/1C$ 437
Tue 10/35:15 p.m.
YYZ
-
STT
1 stop20h 16m
Multiple Airlines
Tue 24/32:36 p.m.
STT
-
YYZ
1 stop9h 38m
Multiple Airlines
Deal found 27/1C$ 456
Sun 8/37:40 a.m.
YYZ
-
STT
1 stop7h 54m
Multiple Airlines
Tue 24/32:36 p.m.
STT
-
YYZ
1 stop9h 38m
Multiple Airlines
Deal found 27/1C$ 460
Mon 9/38:00 a.m.
YUL
-
STT
2 stops29h 31m
Multiple Airlines
Wed 25/34:35 p.m.
STT
-
YUL
1 stop23h 45m
Multiple Airlines
Deal found 28/1C$ 463
Sun 8/37:40 a.m.
YYZ
-
STT
1 stop7h 54m
Multiple Airlines
Thu 26/34:35 p.m.
STT
-
YYZ
1 stop30h 45m
Multiple Airlines
Deal found 27/1C$ 464
Mon 9/37:00 a.m.
YYZ
-
STT
1 stop8h 34m
Multiple Airlines
Sat 28/32:36 p.m.
STT
-
YYZ
1 stop9h 38m
Multiple Airlines
Deal found 27/1C$ 466
Mon 16/38:30 p.m.
YYZ
-
STT
1 stop18h 58m
Multiple Airlines
Mon 23/34:35 p.m.
STT
-
YYZ
1 stop18h 53m
Multiple Airlines
Deal found 27/1C$ 467
Mon 9/37:00 a.m.
YYZ
-
STT
1 stop8h 34m
Multiple Airlines
Fri 27/32:36 p.m.
STT
-
YYZ
1 stop9h 33m
Multiple Airlines
Deal found 27/1C$ 468
Sun 12/48:00 p.m.
YYZ
-
STT
1 stop17h 26m
Multiple Airlines
Thu 16/41:21 p.m.
STT
-
YYZ
1 stop10h 53m
Multiple Airlines
Deal found 28/1C$ 472
Sun 8/35:25 p.m.
YUL
-
STT
2 stops22h 09m
Multiple Airlines
Wed 25/34:35 p.m.
STT
-
YUL
1 stop23h 53m
Multiple Airlines
Deal found 27/1C$ 508

Find flight deals from Ontario to Saint Thomas Island

Keep the following information in mind while searching for Ontario to Saint Thomas Island flight deals. Data was last updated 29 January 2026.

Round-trip from

C$ 430

One-way from

C$ 274

Popular in

July

Cheapest in

August

Average price

C$ 767
23/2-4/3
  • 23/2-4/3
  • 2 total stops
  • 51h 09m total
  • Ontario to Saint Thomas Island
Search Deals
12/4
  • 12/4
  • 1 total stop
  • 17h 06m total
  • Ontario to Saint Thomas Island
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (C$ 24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 59 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Saint Thomas Island 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 29 January 2026.
Use the filters below to find and compare flights from Ontario to Saint Thomas Island that are best for you.

Fly from

Ontario

Fly to

Saint Thomas Island

Route

Depart

Return

Price

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Mon 23/2

3:40 p.m.-4:34 p.m.

1 stop23h 54m

Saint Thomas Island Cyril E King

Wed 4/3

5:40 p.m.-7:55 p.m.

1 stop27h 15m

C$ 430

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Mon 9/3

3:40 p.m.-3:34 p.m.

1 stop23h 54m

Saint Thomas Island Cyril E King

Tue 24/3

2:36 p.m.-12:14 a.m.

1 stop9h 38m

C$ 433

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Sun 12/4

8:20 p.m.-1:26 p.m.

1 stop17h 06m

Saint Thomas Island Cyril E King

Thu 16/4

2:36 p.m.-12:14 a.m.

1 stop9h 38m

C$ 463

MontrealSaint Thomas Island

YUL - STT

YULSTT

Montreal Pierre Elliott Trudeau Intl

Mon 9/3

8:00 a.m.-1:31 p.m.

2 stops29h 31m

Saint Thomas Island Cyril E King

Wed 25/3

4:35 p.m.-4:20 p.m.

1 stop23h 45m

C$ 463

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Sun 8/3

7:40 a.m.-3:34 p.m.

1 stop7h 54m

Saint Thomas Island Cyril E King

Thu 26/3

4:35 p.m.-11:20 p.m.

1 stop30h 45m

C$ 464

MontrealSaint Thomas Island

YUL - STT

YULSTT

Montreal Pierre Elliott Trudeau Intl

Tue 10/3

8:00 a.m.-1:31 p.m.

2 stops29h 31m

Saint Thomas Island Cyril E King

Wed 25/3

4:35 p.m.-4:28 p.m.

1 stop23h 53m

C$ 496

MontrealSaint Thomas Island

YUL - STT

YULSTT

Montreal Pierre Elliott Trudeau Intl

Wed 11/3

6:45 a.m.-3:34 p.m.

1 stop8h 49m

Saint Thomas Island Cyril E King

Wed 25/3

4:35 p.m.-4:28 p.m.

1 stop23h 53m

C$ 540

MontrealSaint Thomas Island

YUL - STT

YULSTT

Montreal Pierre Elliott Trudeau Intl

Mon 9/3

8:00 a.m.-1:31 p.m.

2 stops29h 31m

Saint Thomas Island Cyril E King

Tue 24/3

2:36 p.m.-12:30 a.m.

1 stop9h 54m

C$ 544

MontrealSaint Thomas Island

YUL - STT

YULSTT

Montreal Pierre Elliott Trudeau Intl

Tue 17/3

8:00 a.m.-1:26 p.m.

2 stops29h 26m

Saint Thomas Island Cyril E King

Thu 26/3

4:35 p.m.-1:46 p.m.

2 stops21h 11m

C$ 548

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Thu 26/2

3:40 p.m.-4:34 p.m.

1 stop23h 54m

Saint Thomas Island Cyril E King

Thu 5/3

3:36 p.m.-12:14 a.m.

1 stop9h 38m

C$ 561

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/1

Showing 1-10 of 30 results
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Best time to book a flight from Ontario to Saint Thomas Island

Have a flexible travel schedule? Discover the best time to fly to Saint Thomas Island 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 Saint Thomas Island

What is the cheapest month to book a flight from Region of Ontario to Saint Thomas Island?

Currently, August is the cheapest month in which you can book a flight from Region of Ontario to Saint Thomas Island (average of C$ 387). Flying from Region of Ontario to Saint Thomas Island in July is currently the most expensive (average of C$ 1,001). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Saint Thomas Island. 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 Saint Thomas Island from Ontario?

    For a flight from Ontario to Saint Thomas Island, you will be flying into Cyril E King. Saint Thomas Island Cyril E King (STT) is just 4.6 km from the centre of the city.

  • How long is the flight from Region of Ontario to Saint Thomas Island?

    A quick flight from Region of Ontario to Saint Thomas Island can take about 24h 15m. Air Canada provides one of the quickest options available for as low as C$ 865. The distance between Region of Ontario and Saint Thomas Island is about 3117 km.

  • What are the most popular routes from Region of Ontario to Saint Thomas Island?

    The most popular flight routes from Region of Ontario to Saint Thomas Island are Toronto Pearson Intl - Saint Thomas Island Cyril E King, Montreal Pierre Elliott Trudeau Intl - Saint Thomas Island Cyril E King and Toronto Island - Saint Thomas Island Cyril E King.

  • Can I find deals for flights from Ontario to Saint Thomas Island that include hotel bookings?

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

  • How can I find direct flights from Ontario to Saint Thomas Island?

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

  • Can I find deals for business class flights from Ontario to Saint Thomas Island?

    Yes. Cheapflights offers flight deals from Ontario to Saint Thomas Island by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Region of Ontario to Saint Thomas Island?

    Currently, August is the cheapest month in which you can book a flight from Region of Ontario to Saint Thomas Island (average of C$ 387). Flying from Region of Ontario to Saint Thomas Island in July is currently the most expensive (average of C$ 1,001). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Ontario to Saint Thomas Island

Discover the top 3 airlines that operate flights from Ontario to Saint Thomas Island. 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 29 January 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 390AverageC$ 764FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 510AverageC$ 772FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 563AverageC$ 584FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Ontario to Saint Thomas Island?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ontario to Saint Thomas Island. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Saint Thomas Island?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Saint Thomas Island from Ontario.

Can Cheapflights find flights from Ontario to Saint Thomas Island with no change fees?

Yes! Cheapflights helps users easily find flights from Ontario to Saint Thomas Island with no change fees.

Can Cheapflights notify me if prices for flights from Ontario to Saint Thomas Island become cheaper?

Yes, Cheapflights offers price alerts on Ontario to Saint Thomas Island flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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