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Cheap flights from Ontario to Saint Thomas Island from C$ 338

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Saint Thomas Island departing on 20/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from Ontario to Saint Thomas Island

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:00 a.m. - 1:26 p.m.
YUL
-
STT
29h 26m
2 stops
Multiple Airlines Logo
4:40 p.m. - 4:28 p.m.
STT
-
YUL
23h 48m
1 stop
C$ 514Multiple Airlines
Mon, 6 Apr - Thu, 16 Apr
Multiple Airlines Logo
6:45 a.m. - 3:28 p.m.
YUL
-
STT
8h 43m
1 stop
Multiple Airlines Logo
4:35 p.m. - 4:20 p.m.
STT
-
YUL
23h 45m
1 stop
C$ 529Multiple Airlines
Sun, 22 Mar - Wed, 25 Mar
Multiple Airlines Logo
8:20 p.m. - 1:26 p.m.
YYZ
-
STT
17h 06m
1 stop
Multiple Airlines Logo
4:40 p.m. - 11:28 a.m.
STT
-
YYZ
18h 48m
1 stop
C$ 533Multiple Airlines
Fri, 10 Apr - Sat, 18 Apr
Multiple Airlines Logo
3:40 p.m. - 3:28 p.m.
YYZ
-
STT
23h 48m
1 stop
Multiple Airlines Logo
2:36 p.m. - 11:26 a.m.
STT
-
YYZ
20h 50m
1 stop
C$ 537Multiple Airlines
Sun, 12 Apr - Thu, 16 Apr
Multiple Airlines Logo
7:15 a.m. - 2:31 p.m.
YYZ
-
STT
30h 16m
1 stop
Multiple Airlines Logo
4:35 p.m. - 11:28 a.m.
STT
-
YYZ
18h 53m
1 stop
C$ 539Multiple Airlines
Fri, 6 Mar - Fri, 13 Mar
Multiple Airlines Logo
4:35 p.m. - 1:26 p.m.
YUL
-
STT
20h 51m
1 stop
Multiple Airlines Logo
4:40 p.m. - 4:28 p.m.
STT
-
YUL
23h 48m
1 stop
C$ 541Multiple Airlines
Mon, 6 Apr - Thu, 16 Apr
United Airlines Logo
6:00 a.m. - 1:08 p.m.
YUL
-
STT
7h 08m
1 stop
United Airlines Logo
4:45 p.m. - 12:13 a.m.
STT
-
YUL
7h 28m
1 stop
C$ 593United Airlines
Sun, 5 Apr - Wed, 15 Apr
Air Canada Logo
4:25 p.m. - 12:00 p.m.
YTZ
-
STT
18h 35m
2 stops
Air Canada Logo
5:25 p.m. - 9:35 p.m.
STT
-
YTZ
29h 10m
2 stops
C$ 926Air Canada
Mon, 23 Feb - Thu, 26 Feb
Air Canada Logo
12:30 p.m. - 12:00 p.m.
YTZ
-
STT
22h 30m
2 stops
Air Canada Logo
5:25 p.m. - 9:35 p.m.
STT
-
YTZ
29h 10m
2 stops
C$ 959Air Canada
Mon, 23 Feb - Thu, 26 Feb
Air Canada Logo
10:45 a.m. - 12:00 p.m.
YTZ
-
STT
24h 15m
2 stops
Air Canada Logo
5:25 p.m. - 9:35 p.m.
STT
-
YTZ
29h 10m
2 stops
C$ 1,004Air Canada
Mon, 23 Feb - Thu, 26 Feb

United Airlines flights from Region of Ontario to Saint Thomas Island

Our best United Airlines deals on Region of Ontario to Saint Thomas Island flight tickets
United Airlines
5 Apr
YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl
7h 08m
1 stop
STT1:08 p.m.Saint Thomas Island Cyril E King
15 Apr
STT4:45 p.m.Saint Thomas Island Cyril E King
7h 28m
1 stop
YUL12:13 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 593
United Airlines
16 Feb
YYZ6:45 a.m.Toronto Pearson Intl
8h 33m
1 stop
STT4:18 p.m.Saint Thomas Island Cyril E King
23 Feb
STT3:05 p.m.Saint Thomas Island Cyril E King
9h 54m
1 stop
YYZ11:59 p.m.Toronto Pearson Intl
C$ 604
United Airlines
5 Apr
YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl
7h 08m
1 stop
STT1:08 p.m.Saint Thomas Island Cyril E King
14 Apr
STT1:22 p.m.Saint Thomas Island Cyril E King
8h 44m
1 stop
YUL10:06 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 619

Air Canada flights from Region of Ontario to Saint Thomas Island

Our best Air Canada deals on Region of Ontario to Saint Thomas Island flight tickets
Air Canada
23 Feb
YTZ4:25 p.m.Toronto Island
18h 35m
2 stops
STT12:00 p.m.Saint Thomas Island Cyril E King
26 Feb
STT5:25 p.m.Saint Thomas Island Cyril E King
29h 10m
2 stops
YTZ9:35 p.m.Toronto Island
C$ 926
Air Canada
23 Feb
YTZ12:30 p.m.Toronto Island
22h 30m
2 stops
STT12:00 p.m.Saint Thomas Island Cyril E King
26 Feb
STT5:25 p.m.Saint Thomas Island Cyril E King
29h 10m
2 stops
YTZ9:35 p.m.Toronto Island
C$ 959
Air Canada
23 Feb
YTZ10:45 a.m.Toronto Island
24h 15m
2 stops
STT12:00 p.m.Saint Thomas Island Cyril E King
26 Feb
STT5:25 p.m.Saint Thomas Island Cyril E King
29h 10m
2 stops
YTZ9:35 p.m.Toronto Island
C$ 1,004

momondo Fare Finder

 
Customize your flight search to find flights from Region of 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, momondo users made 96,600 searches. Data last updated 7 February 2026.
Use the filters below to find and compare flights from Ontario to Saint Thomas Island that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MontrealSaint Thomas Island

YUL - STT

YULSTT

Montreal Pierre Elliott Trudeau Intl

Mon 6/4

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

2 stops29h 26m

Saint Thomas Island Cyril E King

Thu 16/4

4:40 p.m.-4:28 p.m.

1 stop23h 48m

C$ 514

MontrealSaint Thomas Island

YUL - STT

YULSTT

Montreal Pierre Elliott Trudeau Intl

Sun 22/3

6:45 a.m.-3:28 p.m.

1 stop8h 43m

Saint Thomas Island Cyril E King

Wed 25/3

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

1 stop23h 45m

C$ 529

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Fri 10/4

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

1 stop17h 06m

Saint Thomas Island Cyril E King

Sat 18/4

4:40 p.m.-11:28 a.m.

1 stop18h 48m

C$ 533

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Sun 12/4

3:40 p.m.-3:28 p.m.

1 stop23h 48m

Saint Thomas Island Cyril E King

Thu 16/4

2:36 p.m.-11:26 a.m.

1 stop20h 50m

C$ 537

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Fri 6/3

7:15 a.m.-2:31 p.m.

1 stop30h 16m

Saint Thomas Island Cyril E King

Fri 13/3

4:35 p.m.-11:28 a.m.

1 stop18h 53m

C$ 539

MontrealSaint Thomas Island

YUL - STT

YULSTT

Montreal Pierre Elliott Trudeau Intl

Mon 6/4

4:35 p.m.-1:26 p.m.

1 stop20h 51m

Saint Thomas Island Cyril E King

Thu 16/4

4:40 p.m.-4:28 p.m.

1 stop23h 48m

C$ 541

MontrealSaint Thomas Island

YUL - STT

YULSTT

Montreal Pierre Elliott Trudeau Intl

Sun 5/4

6:00 a.m.-1:08 p.m.

1 stop7h 08m

Saint Thomas Island Cyril E King

Wed 15/4

4:45 p.m.-12:13 a.m.

1 stop7h 28m

C$ 593

TorontoSaint Thomas Island

YTZ - STT

YTZSTT

Toronto Island

Mon 23/2

4:25 p.m.-12:00 p.m.

2 stops18h 35m

Saint Thomas Island Cyril E King

Thu 26/2

5:25 p.m.-9:35 p.m.

2 stops29h 10m

C$ 926

TorontoSaint Thomas Island

YTZ - STT

YTZSTT

Toronto Island

Mon 23/2

12:30 p.m.-12:00 p.m.

2 stops22h 30m

Saint Thomas Island Cyril E King

Thu 26/2

5:25 p.m.-9:35 p.m.

2 stops29h 10m

C$ 959

TorontoSaint Thomas Island

YTZ - STT

YTZSTT

Toronto Island

Mon 23/2

10:45 a.m.-12:00 p.m.

2 stops24h 15m

Saint Thomas Island Cyril E King

Thu 26/2

5:25 p.m.-9:35 p.m.

2 stops29h 10m

C$ 1,004

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Saint Thomas Island from

How to get the cheapest flight ticket from Region of Ontario to Saint Thomas Island

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Ontario to Saint Thomas Island Cyril E King?

United Airlines is the most popular carrier operating from Ontario to Saint Thomas Island Cyril E King

Which airlines fly to Saint Thomas Island?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Saint Thomas Island from Region of Ontario according to our data. American Airlines is the first choice among our users, with 46% of people opting to fly with this airline when travelling to Saint Thomas Island. Keep in mind that there are 3 different airlines that fly to Saint Thomas Island on a routine basis, so you have a few additional options to choose from.

Cheap Region of Ontario to Saint Thomas Island flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Saint Thomas Island

Fastest flight time

8h 33m

Direct flights

None
The fastest flight from Region of Ontario to Saint Thomas Island takes 8h 33m
There are no direct flights from Region of Ontario to Saint Thomas Island. There are no popular flight routes from Region of Ontario to Saint Thomas Island.
Search flight deals

  • When did momondo last update prices for flights from Ontario to Saint Thomas Island Cyril E King Airport?

    Prices for flights from Ontario to Saint Thomas Island Cyril E King Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ontario to Saint Thomas Island Cyril E King Airport?

  • How old do you have to be to fly from Ontario to Saint Thomas Island Cyril E King Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario to Saint Thomas Island Cyril E King Airport.

  • What documentation or ID do you need to fly to Saint Thomas Island Cyril E King Airport?

    The travel and health documents you'll need for your trip to Saint Thomas Island Cyril E King Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Saint Thomas Island Cyril E King Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Region of Ontario to Saint Thomas Island

Compare and see reviews for airlines that fly from Region of Ontario to Saint Thomas Island with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom C$ 392Free CancellationRating
7.2
11,246 reviews
Search American Airlines flights
United AirlinesPriceFrom C$ 514Free CancellationRating
7.4
9,244 reviews
Search United Airlines flights
DeltaPriceFrom C$ 567Free CancellationRating
7.9
8,159 reviews
Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Saint Thomas Island?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Saint Thomas Island from Ontario.

Can I find flights from Ontario to Saint Thomas Island with flexible booking policies on momondo?

All flight searches from Ontario to Saint Thomas Island on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Saint Thomas Island?

momondo provides multiple filters to help you find the best flight to Saint Thomas Island from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ontario to Saint Thomas Island right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Saint Thomas Island flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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