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Cheap flights from Ontario to Saint Thomas Island from $362

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 6/11. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Saint Thomas Island

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
10:26 pm - 2:49 pm
ONT
-
STT
13h 23m
1 stop
American Airlines Logo
2:05 pm - 8:39 am
STT
-
ONT
21h 34m
2 stops
$644American Airlines
週日, 5月 10 - 週五, 5月 15
American Airlines Logo
10:26 pm - 2:49 pm
ONT
-
STT
13h 23m
1 stop
American Airlines Logo
5:05 pm - 10:09 am
STT
-
ONT
20h 04m
2 stops
$720American Airlines
週日, 5月 10 - 週五, 5月 15
American Airlines Logo
7:35 pm - 2:49 pm
ONT
-
STT
16h 14m
2 stops
American Airlines Logo
12:25 pm - 11:46 pm
STT
-
ONT
14h 21m
2 stops
$760American Airlines
週日, 5月 10 - 週五, 5月 15
Delta Logo
5:05 pm - 1:52 pm
ONT
-
STT
17h 47m
2 stops
Delta Logo
3:02 pm - 9:56 pm
STT
-
ONT
9h 54m
1 stop
$802Delta
週二, 8月 18 - 週五, 8月 28
United Airlines Logo
6:59 pm - 12:20 pm
ONT
-
STT
14h 21m
2 stops
United Airlines Logo
1:22 pm - 9:58 pm
STT
-
ONT
11h 36m
1 stop
$810United Airlines
週日, 5月 10 - 週四, 5月 14
United Airlines Logo
1:40 pm - 1:08 pm
ONT
-
STT
20h 28m
2 stops
United Airlines Logo
1:22 pm - 9:58 pm
STT
-
ONT
11h 36m
1 stop
$811United Airlines
週日, 5月 10 - 週四, 5月 14
United Airlines Logo
5:00 am - 1:08 pm
ONT
-
STT
29h 08m
2 stops
United Airlines Logo
1:22 pm - 9:58 pm
STT
-
ONT
11h 36m
1 stop
$839United Airlines
週日, 5月 10 - 週四, 5月 14
United Airlines Logo
6:30 pm - 12:20 pm
ONT
-
STT
14h 50m
2 stops
United Airlines Logo
1:22 pm - 9:55 pm
STT
-
ONT
11h 33m
1 stop
$869United Airlines
週一, 6月 15 - 週四, 6月 25
Delta Logo
10:00 pm - 1:51 pm
ONT
-
STT
12h 51m
1 stop
Delta Logo
1:16 pm - 9:48 pm
STT
-
ONT
11h 32m
1 stop
$922Delta
週日, 5月 10 - 週五, 5月 15
American Airlines Logo
7:13 pm - 3:57 pm
ONT
-
STT
17h 44m
2 stops
American Airlines Logo
11:44 am - 10:36 pm
STT
-
ONT
13h 52m
2 stops
$942American Airlines
週日, 6月 14 - 週六, 6月 20

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Delta flights from Ontario to Saint Thomas Island

Our best Delta deals on Ontario to Saint Thomas Island flight tickets
Delta
Aug 18
ONT5:05 pmOntario
17h 47m
2 stops
STT1:52 pmSaint Thomas Island Cyril E King
Aug 28
STT3:02 pmSaint Thomas Island Cyril E King
9h 54m
1 stop
ONT9:56 pmOntario
$802
Delta
May 10
ONT10:00 pmOntario
12h 51m
1 stop
STT1:51 pmSaint Thomas Island Cyril E King
May 15
STT1:16 pmSaint Thomas Island Cyril E King
11h 32m
1 stop
ONT9:48 pmOntario
$922
Delta
May 10
ONT10:00 pmOntario
12h 51m
1 stop
STT1:51 pmSaint Thomas Island Cyril E King
May 15
STT3:01 pmSaint Thomas Island Cyril E King
9h 47m
1 stop
ONT9:48 pmOntario
$942

American Airlines flights from Ontario to Saint Thomas Island

Our best American Airlines deals on Ontario to Saint Thomas Island flight tickets
American Airlines
May 10
ONT10:26 pmOntario
13h 23m
1 stop
STT2:49 pmSaint Thomas Island Cyril E King
May 15
STT2:05 pmSaint Thomas Island Cyril E King
21h 34m
2 stops
ONT8:39 amOntario
$644
American Airlines
May 10
ONT10:26 pmOntario
13h 23m
1 stop
STT2:49 pmSaint Thomas Island Cyril E King
May 15
STT5:05 pmSaint Thomas Island Cyril E King
20h 04m
2 stops
ONT10:09 amOntario
$720
American Airlines
May 10
ONT7:35 pmOntario
16h 14m
2 stops
STT2:49 pmSaint Thomas Island Cyril E King
May 15
STT12:25 pmSaint Thomas Island Cyril E King
14h 21m
2 stops
ONT11:46 pmOntario
$760

momondo 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, momondo users made 832,500 searches. Data last updated 4月 29, 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

Cheapest round-trip

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

週日 5/10

10:26 pm-2:49 pm

1 stop13h 23m

Saint Thomas Island Cyril E King

週五 5/15

2:05 pm-8:39 am

2 stops21h 34m

$644

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

週日 5/10

10:26 pm-2:49 pm

1 stop13h 23m

Saint Thomas Island Cyril E King

週五 5/15

5:05 pm-10:09 am

2 stops20h 04m

$720

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

週日 5/10

7:35 pm-2:49 pm

2 stops16h 14m

Saint Thomas Island Cyril E King

週五 5/15

12:25 pm-11:46 pm

2 stops14h 21m

$760

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

週二 8/18

5:05 pm-1:52 pm

2 stops17h 47m

Saint Thomas Island Cyril E King

週五 8/28

3:02 pm-9:56 pm

1 stop9h 54m

$802

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

週日 5/10

6:59 pm-12:20 pm

2 stops14h 21m

Saint Thomas Island Cyril E King

週四 5/14

1:22 pm-9:58 pm

1 stop11h 36m

$810

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

週日 5/10

1:40 pm-1:08 pm

2 stops20h 28m

Saint Thomas Island Cyril E King

週四 5/14

1:22 pm-9:58 pm

1 stop11h 36m

$811

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

週日 5/10

5:00 am-1:08 pm

2 stops29h 08m

Saint Thomas Island Cyril E King

週四 5/14

1:22 pm-9:58 pm

1 stop11h 36m

$839

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

週一 6/15

6:30 pm-12:20 pm

2 stops14h 50m

Saint Thomas Island Cyril E King

週四 6/25

1:22 pm-9:55 pm

1 stop11h 33m

$869
Quickest round-trip

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

週日 5/10

10:00 pm-1:51 pm

1 stop12h 51m

Saint Thomas Island Cyril E King

週五 5/15

1:16 pm-9:48 pm

1 stop11h 32m

$922

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

週日 6/14

7:13 pm-3:57 pm

2 stops17h 44m

Saint Thomas Island Cyril E King

週六 6/20

11:44 am-10:36 pm

2 stops13h 52m

$942

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 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?

American Airlines and United Airlines are the most popular carriers operating from Ontario to Saint Thomas Island Cyril E King

What airlines fly to Saint Thomas Island?

American Airlines, United Airlines and Spirit Airlines are the top three most popular airlines that fly to Saint Thomas Island from Ontario according to our data. American Airlines is the first choice among our users, with 62% of people opting to fly with this airline when traveling to Saint Thomas Island. Keep in mind that there are 4 different airlines that fly to Saint Thomas Island on a routine basis, so you have a few additional options to choose from.

When to book flights from Ontario to Saint Thomas Island

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Saint Thomas Island according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Saint Thomas Island (ONT to STT) flight deals and tips

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

Fastest flight time

11h 53m

Direct flights

None
The fastest flight from Ontario to Saint Thomas Island takes 11h 53m
There are no direct flights from Ontario to Saint Thomas Island. There are no popular flight routes from Ontario to Saint Thomas Island.
Search flight deals

Frequently asked questions about flying from Ontario to Saint Thomas Island

  • How far is Ontario to Saint Thomas Island Cyril E King by plane?

    Ontario and Saint Thomas Island Cyril E King are 3401.6 mi apart from one another. A reasonable flight in good conditions will take 11h 53m.

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

    Prices for flights from Ontario Airport to Saint Thomas Island Cyril E King Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport 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 necessary travel and health documents for your Saint Thomas Island Cyril E King Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Ontario to Saint Thomas Island?

Best airlines flying from Ontario to Saint Thomas Island

Compare and see reviews for airlines that fly from Ontario to Saint Thomas Island with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $595Free CancellationRating
7.1
11,678 reviews
Search American Airlines flights

Traveling to a place near Saint Thomas Island?

Book flights to Saint Thomas Island if you plan to visit one of these locations
St. John

Why use momondo?

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

It is quick and easy to find Ontario to Saint Thomas Island flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Saint Thomas Island that suits you.

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

Yes. All flights to Saint Thomas Island from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Saint Thomas Island from Ontario.

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

Price alerts on flights to Saint Thomas Island from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Saint Thomas Island trip

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週五 5/29
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