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Cheap flights from Ontario to Saint Thomas Island from C$ 265

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 14/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STT
15 Oct — 22 Oct1
1 adult
1 adult, Economy

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 15 September 2025.

Round-trip from

C$ 503

One-way from

C$ 265

Popular in

July

Cheapest in

August

Average price

C$ 680
31/10-11/11
  • 31/10-11/11
  • 2 total stops
  • 50h 06m total
  • Ontario to Saint Thomas Island
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14/10
  • 14/10
  • 1 total stop
  • 27h 26m total
  • Ontario to Saint Thomas Island
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High demand for flights, 3% potential price rise
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Cheapest flight prices on average. 3% potential price decrease (C$ 47 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Ontario to Saint Thomas Island

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 15 September 2025.

Fri 31/107:00 a.m.YYZ - STT
1 stop26h 56mMultiple Airlines
Tue 11/111:33 p.m.STT - YYZ
1 stop23h 10mMultiple Airlines
Deal found 14/9C$ 503
Sun 7/128:30 p.m.YYZ - STT
1 stop14h 58mMultiple Airlines
Mon 15/121:33 p.m.STT - YYZ
1 stop10h 47mMultiple Airlines
Deal found 13/9C$ 597
Sat 6/128:30 p.m.YYZ - STT
1 stop14h 58mMultiple Airlines
Mon 15/121:33 p.m.STT - YYZ
1 stop10h 47mMultiple Airlines
Deal found 13/9C$ 622
Sun 12/106:30 a.m.YYZ - STT
1 stop27h 26mMultiple Airlines
Sun 19/1011:01 a.m.STT - YYZ
1 stop27h 04mMultiple Airlines
Deal found 14/9C$ 623
Fri 5/125:15 p.m.YYZ - STT
1 stop20h 56mMultiple Airlines
Mon 15/121:33 p.m.STT - YYZ
1 stop9h 39mMultiple Airlines
Deal found 13/9C$ 631
Thu 18/95:48 p.m.YYZ - STT
2 stops22h 12mAmerican Airlines
Sat 20/95:10 p.m.STT - YYZ
2 stops17h 49mAmerican Airlines
Deal found 14/9C$ 634
Sat 6/1210:55 a.m.YYZ - STT
1 stop27h 16mMultiple Airlines
Sun 14/121:33 p.m.STT - YYZ
1 stop9h 39mMultiple Airlines
Deal found 13/9C$ 658
Sun 7/128:00 p.m.YYZ - STT
1 stop18h 11mMultiple Airlines
Sat 13/121:33 p.m.STT - YYZ
1 stop10h 47mMultiple Airlines
Deal found 13/9C$ 684
Mon 17/113:59 p.m.YUL - STT
2 stops22h 50mAmerican Airlines
Mon 24/116:17 p.m.STT - YUL
2 stops20h 32mAmerican Airlines
Deal found 15/9C$ 750
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 15/9C$ 944
Mon 17/1112:10 p.m.YUL - STT
2 stops22h 50mAir Canada
Mon 24/112:15 p.m.STT - YUL
2 stops11h 17mAir Canada
Deal found 14/9C$ 1,079
Sat 22/116:55 p.m.YUL - STT
1 stop16h 05mAir Canada
Sat 29/115:25 p.m.STT - YUL
2 stops25h 58mAir Canada
Deal found 15/9C$ 1,417

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 15 September 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

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Fri 31/10

7:00 a.m.-9:56 a.m.

1 stop26h 56m

Saint Thomas Island Cyril E King

Tue 11/11

1:33 p.m.-11:43 a.m.

1 stop23h 10m

C$ 503

MontrealSaint Thomas Island

YUL - STT

YULSTT

Montreal Pierre Elliott Trudeau Intl

Wed 21/1

6:00 a.m.-4:18 p.m.

1 stop9h 18m

Saint Thomas Island Cyril E King

Tue 27/1

3:05 p.m.-9:32 p.m.

1 stop7h 27m

C$ 623

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Sun 12/10

6:30 a.m.-9:56 a.m.

1 stop27h 26m

Saint Thomas Island Cyril E King

Sun 19/10

11:01 a.m.-2:05 p.m.

1 stop27h 04m

C$ 623

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Sun 18/1

7:15 p.m.-11:50 a.m.

1 stop15h 35m

Saint Thomas Island Cyril E King

Wed 21/1

2:32 p.m.-9:51 p.m.

1 stop8h 19m

C$ 629

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Fri 5/12

8:15 p.m.-12:28 p.m.

2 stops15h 13m

Saint Thomas Island Cyril E King

Mon 15/12

1:33 p.m.-11:20 p.m.

1 stop10h 47m

C$ 648

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Fri 5/12

5:15 p.m.-3:11 p.m.

1 stop20h 56m

Saint Thomas Island Cyril E King

Sun 14/12

1:33 p.m.-10:12 p.m.

1 stop9h 39m

C$ 648

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Sat 6/12

10:55 a.m.-3:11 p.m.

1 stop27h 16m

Saint Thomas Island Cyril E King

Sun 14/12

1:33 p.m.-10:12 p.m.

1 stop9h 39m

C$ 658

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Sun 7/12

8:00 p.m.-3:11 p.m.

1 stop18h 11m

Saint Thomas Island Cyril E King

Sat 13/12

1:33 p.m.-11:20 p.m.

1 stop10h 47m

C$ 684

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Thu 1/1

6:00 a.m.-5:39 p.m.

2 stops10h 39m

Saint Thomas Island Cyril E King

Thu 15/1

4:35 p.m.-10:50 p.m.

1 stop7h 15m

C$ 692

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Fri 5/12

5:15 p.m.-3:11 p.m.

1 stop20h 56m

Saint Thomas Island Cyril E King

Sat 13/12

1:33 p.m.-10:12 p.m.

1 stop9h 39m

C$ 692

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/9

Showing 1-10 of 23 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 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 15 September 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to Saint Thomas Island as you normally would.

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 9h 18m. United Airlines provides one of the quickest options available for as low as C$ 623. 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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 15 September 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 519AverageC$ 862FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 532AverageC$ 831FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapestC$ 592AverageC$ 594FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapestC$ 982AverageC$ 1,156FlexibilityNo 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.

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