Find flights
When to book
FAQs

Cheap flights from Ontario to Saint Thomas Island from C$ 290

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 14/12. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STT
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 30 October 2025.

Mon 24/117:00 a.m.YYZ - STT
1 stop28h 55mMultiple Airlines
Mon 1/122:00 p.m.STT - YYZ
2 stops11h 11mMultiple Airlines
Deal found 29/10C$ 610
Wed 24/127:15 a.m.YYZ - STT
2 stops30h 13mMultiple Airlines
Wed 31/1212:31 p.m.STT - YYZ
1 stop10h 41mMultiple Airlines
Deal found 28/10C$ 665
Fri 5/123:56 p.m.YYZ - STT
2 stops18h 45mAmerican Airlines
Wed 10/124:16 p.m.STT - YYZ
2 stops21h 14mAmerican Airlines
Deal found 28/10C$ 691
Sun 21/128:00 p.m.YYZ - STT
1 stop17h 28mMultiple Airlines
Wed 31/1212:31 p.m.STT - YYZ
1 stop10h 41mMultiple Airlines
Deal found 28/10C$ 722
Fri 5/126:00 a.m.YYZ - STT
1 stop9h 58mAmerican Airlines
Thu 11/124:16 p.m.STT - YYZ
1 stop8h 33mAmerican Airlines
Deal found 28/10C$ 725
Wed 24/127:15 a.m.YYZ - STT
2 stops30h 13mMultiple Airlines
Mon 29/123:23 p.m.STT - YYZ
1 stop21h 20mMultiple Airlines
Deal found 28/10C$ 739
Mon 17/112:29 p.m.YUL - STT
2 stops23h 56mAmerican Airlines
Mon 24/116:17 p.m.STT - YUL
2 stops18h 58mAmerican Airlines
Deal found 29/10C$ 863
Mon 17/119:15 a.m.YUL - STT
1 stop26h 57mUnited Airlines
Mon 24/112:15 p.m.STT - YUL
1 stop8h 27mUnited Airlines
Deal found 29/10C$ 1,116
Sat 13/1210:30 a.m.YTZ - STT
2 stops24h 30mAir Canada
Sat 20/126:45 p.m.STT - YTZ
2 stops21h 10mAir Canada
Deal found 29/10C$ 1,128
Mon 17/112:00 p.m.YUL - STT
2 stops21h 00mAir Canada
Mon 24/112:15 p.m.STT - YUL
1 stop8h 27mAir Canada
Deal found 29/10C$ 1,205
Sat 8/113:30 p.m.YTZ - STT
3 stops20h 30mMultiple Airlines
Thu 13/118:00 a.m.STT - YTZ
3 stops25h 55mMultiple Airlines
Deal found 29/10C$ 1,226
Sat 8/1112:30 p.m.YTZ - STT
2 stops22h 30mAir Canada
Thu 13/112:15 p.m.STT - YTZ
2 stops22h 40mAir Canada
Deal found 29/10C$ 1,320

Cheap 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 30 October 2025.

Round-trip from

C$ 577

One-way from

C$ 290

Popular in

December

Cheapest in

August
24/1-1/2
  • 24/1-1/2
  • 3 total stops
  • 62h 38m total
  • Ontario to Saint Thomas Island
Search Deals
14/12
  • 14/12
  • 1 total stop
  • 17h 49m total
  • Ontario to Saint Thomas Island
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 183 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 55 potential savings vs. average RT price).
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 30 October 2025.
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

MontrealSaint Thomas Island

YUL - STT

YULSTT

Montreal Pierre Elliott Trudeau Intl

Sun 1/2

6:45 a.m.-3:11 p.m.

3 stops31h 26m

Saint Thomas Island Cyril E King

Sun 8/2

1:33 p.m.-6:40 p.m.

3 stops30h 07m

C$ 638

MontrealSaint Thomas Island

YUL - STT

YULSTT

Montreal Pierre Elliott Trudeau Intl

Fri 9/1

7:00 a.m.-3:56 p.m.

1 stop7h 56m

Saint Thomas Island Cyril E King

Sun 18/1

6:39 p.m.-1:45 p.m.

2 stops20h 06m

C$ 641

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Sat 24/1

8:20 p.m.-3:11 p.m.

1 stop17h 51m

Saint Thomas Island Cyril E King

Sun 1/2

1:33 p.m.-2:20 p.m.

3 stops25h 47m

C$ 644

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Wed 24/12

7:15 a.m.-2:28 p.m.

2 stops30h 13m

Saint Thomas Island Cyril E King

Wed 31/12

12:31 p.m.-10:12 p.m.

1 stop10h 41m

C$ 665

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Wed 11/3

7:20 p.m.-10:45 a.m.

1 stop15h 25m

Saint Thomas Island Cyril E King

Wed 18/3

1:04 p.m.-9:51 p.m.

1 stop8h 47m

C$ 680

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Fri 5/12

3:56 p.m.-11:41 a.m.

2 stops18h 45m

Saint Thomas Island Cyril E King

Wed 10/12

4:16 p.m.-12:30 p.m.

2 stops21h 14m

C$ 691

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Fri 5/12

3:56 p.m.-11:41 a.m.

2 stops18h 45m

Saint Thomas Island Cyril E King

Thu 11/12

6:17 p.m.-10:56 a.m.

2 stops17h 39m

C$ 691

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Sun 23/11

11:30 p.m.-12:55 p.m.

2 stops36h 25m

Saint Thomas Island Cyril E King

Mon 1/12

2:00 p.m.-11:43 a.m.

1 stop22h 43m

C$ 725

MontrealSaint Thomas Island

YUL - STT

YULSTT

Montreal Pierre Elliott Trudeau Intl

Fri 9/1

6:45 a.m.-3:11 p.m.

3 stops31h 26m

Saint Thomas Island Cyril E King

Sun 18/1

10:45 a.m.-12:15 a.m.

2 stops14h 30m

C$ 736

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Wed 24/12

7:15 a.m.-2:28 p.m.

2 stops30h 13m

Saint Thomas Island Cyril E King

Mon 29/12

3:23 p.m.-11:43 a.m.

1 stop21h 20m

C$ 739

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/10

Showing 1-10 of 33 results
1
2
3
4

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$ 398). Flying from Region of Ontario to Saint Thomas Island in July is currently the most expensive (average of C$ 1,043). 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.

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

Find hourly flight availability from Ontario to Saint Thomas Island. 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.

Unlike in the morning, when flights are generally more expensive, you can save up to 45% on flights from Region of Ontario to Saint Thomas Island by exploring options for tickets at noon.

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 7h 54m. American Airlines provides one of the quickest options available for as low as C$ 809. The distance between Region of Ontario and Saint Thomas Island is about 3121 km. This flight may include one or multiple stops.

  • 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$ 398). Flying from Region of Ontario to Saint Thomas Island in July is currently the most expensive (average of C$ 1,043). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Ontario to Saint Thomas Island

Discover the top 4 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 30 October 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 525AverageC$ 1,065FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 538AverageC$ 816FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapestC$ 598AverageC$ 600FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapestC$ 993AverageC$ 993FlexibilityNo cancel feeOn-time67%
Search Air Canada 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 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.