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Cheap flights from Ontario to Saint Thomas Island from C$ 298

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 14/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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. - 12:55 p.m.YUL-STT
27h 55m1 stop
Multiple Airlines Logo
1:01 p.m. - 4:55 p.m.STT-YUL
28h 54m2 stops
C$ 607Multiple Airlines
Find Deal
Mon, 1 Dec - Mon, 8 Dec
Multiple Airlines Logo
8:00 a.m. - 5:10 p.m.YUL-STT
8h 10m1 stop
Multiple Airlines Logo
6:15 p.m. - 4:55 p.m.STT-YUL
23h 40m2 stops
C$ 631Multiple Airlines
Find Deal
Thu, 8 Jan - Sun, 11 Jan
American Airlines Logo
3:59 p.m. - 1:10 p.m.YUL-STT
20h 11m2 stops
American Airlines Logo
6:39 p.m. - 12:24 p.m.STT-YUL
18h 45m2 stops
C$ 645American Airlines
Find Deal
Wed, 7 Jan - Tue, 13 Jan
American Airlines Logo
5:15 p.m. - 11:00 a.m.YYZ-STT
17h 45m2 stops
American Airlines Logo
6:40 p.m. - 11:55 a.m.STT-YYZ
17h 15m2 stops
C$ 690American Airlines
Find Deal
Tue, 31 Mar - Tue, 7 Apr
Delta Logo
6:15 p.m. - 11:50 a.m.YUL-STT
17h 35m1 stop
Delta Logo
2:00 p.m. - 5:04 p.m.STT-YUL
27h 04m1 stop
C$ 742Delta
Find Deal
Tue, 17 Mar - Tue, 31 Mar
Delta Logo
6:00 a.m. - 1:45 p.m.YYZ-STT
6h 45m1 stop
Delta Logo
4:59 p.m. - 5:20 p.m.STT-YYZ
25h 21m1 stop
C$ 749Delta
Find Deal
Mon, 2 Mar - Wed, 4 Mar
Air Canada Logo
11:10 a.m. - 12:00 p.m.YUL-STT
23h 50m2 stops
Air Canada Logo
5:25 p.m. - 12:00 p.m.STT-YUL
19h 35m1 stop
C$ 886Air Canada
Find Deal
Wed, 25 Feb - Wed, 4 Mar
Air Canada Logo
5:10 p.m. - 12:00 p.m.YUL-STT
17h 50m2 stops
Air Canada Logo
5:25 p.m. - 11:57 a.m.STT-YUL
19h 32m1 stop
C$ 888Air Canada
Find Deal
Mon, 5 Jan - Wed, 14 Jan
United Airlines Logo
11:00 a.m. - 1:01 p.m.YTZ-STT
26h 01m2 stops
United Airlines Logo
4:45 p.m. - 9:34 a.m.STT-YTZ
16h 49m2 stops
C$ 1,940United Airlines
Find Deal
Tue, 31 Mar - Wed, 1 Apr
United Airlines Logo
11:00 a.m. - 1:01 p.m.YTZ-STT
26h 01m2 stops
United Airlines Logo
4:45 p.m. - 11:39 a.m.STT-YTZ
18h 54m2 stops
C$ 1,944United Airlines
Find Deal
Tue, 31 Mar - Wed, 1 Apr

Delta flights from Region of Ontario to Saint Thomas Island

Our best Delta deals on Region of Ontario to Saint Thomas Island flight tickets
Delta
17 Mar
YUL6:15 p.m.Montreal Pierre Elliott Trudeau Intl
17h 35m
1 stop
STT11:50 a.m.Saint Thomas Island Cyril E King
31 Mar
STT2:00 p.m.Saint Thomas Island Cyril E King
27h 04m
1 stop
YUL5:04 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 742
Find similar
Delta
2 Mar
YYZ6:00 a.m.Toronto Pearson Intl
6h 45m
1 stop
STT1:45 p.m.Saint Thomas Island Cyril E King
4 Mar
STT4:59 p.m.Saint Thomas Island Cyril E King
25h 21m
1 stop
YYZ5:20 p.m.Toronto Pearson Intl
C$ 749
Find similar
Delta
29 Mar
YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl
28h 50m
1 stop
STT11:50 a.m.Saint Thomas Island Cyril E King
8 Apr
STT2:00 p.m.Saint Thomas Island Cyril E King
27h 04m
1 stop
YUL5:04 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 777
Find similar

American Airlines flights from Region of Ontario to Saint Thomas Island

Our best American Airlines deals on Region of Ontario to Saint Thomas Island flight tickets
American Airlines
7 Jan
YUL3:59 p.m.Montreal Pierre Elliott Trudeau Intl
20h 11m
2 stops
STT1:10 p.m.Saint Thomas Island Cyril E King
13 Jan
STT6:39 p.m.Saint Thomas Island Cyril E King
18h 45m
2 stops
YUL12:24 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 645
Find similar
American Airlines
31 Mar
YYZ5:15 p.m.Toronto Pearson Intl
17h 45m
2 stops
STT11:00 a.m.Saint Thomas Island Cyril E King
7 Apr
STT6:40 p.m.Saint Thomas Island Cyril E King
17h 15m
2 stops
YYZ11:55 a.m.Toronto Pearson Intl
C$ 690
Find similar
American Airlines
31 Mar
YYZ5:30 p.m.Toronto Pearson Intl
17h 30m
2 stops
STT11:00 a.m.Saint Thomas Island Cyril E King
7 Apr
STT6:40 p.m.Saint Thomas Island Cyril E King
17h 15m
2 stops
YYZ11:55 a.m.Toronto Pearson Intl
C$ 691
Find similar

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 5 November 2025.
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 1/12

8:00 a.m.-12:55 p.m.

1 stop27h 55m

Saint Thomas Island Cyril E King

Mon 8/12

1:01 p.m.-4:55 p.m.

2 stops28h 54m

C$ 607

MontrealSaint Thomas Island

YUL - STT

YULSTT

Montreal Pierre Elliott Trudeau Intl

Thu 8/1

8:00 a.m.-5:10 p.m.

1 stop8h 10m

Saint Thomas Island Cyril E King

Sun 11/1

6:15 p.m.-4:55 p.m.

2 stops23h 40m

C$ 631

MontrealSaint Thomas Island

YUL - STT

YULSTT

Montreal Pierre Elliott Trudeau Intl

Wed 7/1

3:59 p.m.-1:10 p.m.

2 stops20h 11m

Saint Thomas Island Cyril E King

Tue 13/1

6:39 p.m.-12:24 p.m.

2 stops18h 45m

C$ 645

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Tue 31/3

5:15 p.m.-11:00 a.m.

2 stops17h 45m

Saint Thomas Island Cyril E King

Tue 7/4

6:40 p.m.-11:55 a.m.

2 stops17h 15m

C$ 690

MontrealSaint Thomas Island

YUL - STT

YULSTT

Montreal Pierre Elliott Trudeau Intl

Tue 17/3

6:15 p.m.-11:50 a.m.

1 stop17h 35m

Saint Thomas Island Cyril E King

Tue 31/3

2:00 p.m.-5:04 p.m.

1 stop27h 04m

C$ 742

TorontoSaint Thomas Island

YYZ - STT

YYZSTT

Toronto Pearson Intl

Mon 2/3

6:00 a.m.-1:45 p.m.

1 stop6h 45m

Saint Thomas Island Cyril E King

Wed 4/3

4:59 p.m.-5:20 p.m.

1 stop25h 21m

C$ 749

MontrealSaint Thomas Island

YUL - STT

YULSTT

Montreal Pierre Elliott Trudeau Intl

Wed 25/2

11:10 a.m.-12:00 p.m.

2 stops23h 50m

Saint Thomas Island Cyril E King

Wed 4/3

5:25 p.m.-12:00 p.m.

1 stop19h 35m

C$ 886

MontrealSaint Thomas Island

YUL - STT

YULSTT

Montreal Pierre Elliott Trudeau Intl

Mon 5/1

5:10 p.m.-12:00 p.m.

2 stops17h 50m

Saint Thomas Island Cyril E King

Wed 14/1

5:25 p.m.-11:57 a.m.

1 stop19h 32m

C$ 888

TorontoSaint Thomas Island

YTZ - STT

YTZSTT

Toronto Island

Tue 31/3

11:00 a.m.-1:01 p.m.

2 stops26h 01m

Saint Thomas Island Cyril E King

Wed 1/4

4:45 p.m.-9:34 a.m.

2 stops16h 49m

C$ 1,940

TorontoSaint Thomas Island

YTZ - STT

YTZSTT

Toronto Island

Tue 31/3

11:00 a.m.-1:01 p.m.

2 stops26h 01m

Saint Thomas Island Cyril E King

Wed 1/4

4:45 p.m.-11:39 a.m.

2 stops18h 54m

C$ 1,944

Flights are sorted by cheapest round-trip flights 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 day to depart on your flight to Saint Thomas Island?

The cheapest day to depart from Region of Ontario to Saint Thomas Island is on a Wednesday when prices can be found for as low as C$ 960. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Region of Ontario to Saint Thomas Island for around C$ 1,038.

What is the cheapest time of day to depart on your flight to Saint Thomas Island?

The cheapest time of day to fly to Saint Thomas Island is in the afternoon when flights can be purchased for as low as C$ 710. In contrast, the most expensive time of day to depart to Saint Thomas Island is in the evening when prices are around C$ 1,245.

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

Direct flights

None
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.
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  • 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
United AirlinesPriceFrom C$ 529Free CancellationRating
7.4
9,001 reviews
Search United Airlines flights
American AirlinesPriceFrom C$ 542Free CancellationRating
7.2
11,039 reviews
Search American Airlines flights
DeltaPriceFrom C$ 584Free CancellationRating
7.9
8,004 reviews
Search Delta flights
Air CanadaPriceFrom C$ 1,001Free CancellationRating
7.1
10,404 reviews
Search Air Canada 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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