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Saint Thomas Island

$341+ Cheap flights from Ontario (ONT) to Saint Thomas Island (STT)

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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — STT
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
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Cheap flight deals from Ontario to Saint Thomas Island

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Saint Thomas Island (STT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$595
(American Airlines)

One-way from

$341
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$629
Provider with most accurate pricing for Ontario-Saint Thomas Island Cyril E King flight deals.
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Provider most trusted by Cheapflights users for Ontario-Saint Thomas Island Cyril E King flights.
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From Ontario to Saint Thomas Island Cyril E King
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One-way flight from Ontario to Saint Thomas Island Cyril E King
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Highest demand for flights based on searches. 2% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 14, 2025.

This American Airlines deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1110:34 pmONT - STT
1 stop13h 15mAmerican Airlines
Tue 11/186:17 pmSTT - ONT
2 stops25h 44mAmerican Airlines
Deal found 10/12$595
This United Airlines deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/86:38 pmONT - STT
2 stops15h 52mUnited Airlines
Thu 11/131:02 pmSTT - ONT
2 stops13h 29mUnited Airlines
Deal found 10/13$685
This American Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/67:30 pmONT - STT
2 stops14h 46mAmerican Airlines
Thu 11/134:17 pmSTT - ONT
2 stops20h 44mAmerican Airlines
Deal found 10/14$954
This United deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:38 pmONT - STT
2 stops14h 34mMultiple Airlines
Tue 11/188:00 amSTT - ONT
3 stops42h 51mMultiple Airlines
Deal found 10/12$961
This United Airlines deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:05 amONT - STT
2 stops26h 55mUnited Airlines
Sat 1/313:35 pmSTT - ONT
2 stops25h 12mUnited Airlines
Deal found 10/12$962
This United Airlines deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:38 pmONT - STT
2 stops14h 34mUnited Airlines
Sat 11/153:35 pmSTT - ONT
2 stops25h 02mUnited Airlines
Deal found 10/13$1,013
This Delta deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1110:25 pmONT - STT
1 stop12h 15mDelta
Tue 11/183:50 pmSTT - ONT
1 stop11h 14mDelta
Deal found 10/12$1,179
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/65:05 amONT - STT
2 stops53h 25mUnited Airlines
Thu 11/132:15 pmSTT - ONT
3 stops36h 36mUnited Airlines
Deal found 10/14$1,192
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2311:59 pmONT - STT
1 stop12h 19mUnited Airlines
Mon 12/291:02 pmSTT - ONT
2 stops27h 36mUnited Airlines
Deal found 10/14$1,234
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2211:59 pmONT - STT
1 stop12h 19mUnited Airlines
Mon 12/291:02 pmSTT - ONT
2 stops27h 36mUnited Airlines
Deal found 10/14$1,315
This United Airlines deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:05 amONT - STT
2 stops27h 07mUnited Airlines
Sat 12/63:35 pmSTT - ONT
2 stops24h 57mUnited Airlines
Deal found 10/13$1,429
This Delta deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2310:29 pmONT - STT
1 stop10h 09mDelta
Tue 12/303:06 pmSTT - ONT
1 stop12h 17mDelta
Deal found 10/14$1,572

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 2,558,603 searches. Data last updated October 14, 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

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Wed 3/25

10:30 pm-11:50 am

1 stop10h 20m

Saint Thomas Island Cyril E King

Wed 5/6

1:15 pm-10:09 pm

1 stop11h 54m

$595

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Tue 11/11

10:34 pm-3:49 pm

1 stop13h 15m

Saint Thomas Island Cyril E King

Tue 11/18

6:17 pm-4:01 pm

2 stops25h 44m

$595

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Sat 3/28

10:30 pm-11:50 am

1 stop10h 20m

Saint Thomas Island Cyril E King

Wed 5/6

1:15 pm-10:09 pm

1 stop11h 54m

$595

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Sun 3/29

10:30 pm-11:50 am

1 stop10h 20m

Saint Thomas Island Cyril E King

Wed 5/6

1:15 pm-10:09 pm

1 stop11h 54m

$595

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Sun 3/29

10:30 pm-11:50 am

1 stop10h 20m

Saint Thomas Island Cyril E King

Thu 4/30

1:15 pm-10:09 pm

1 stop11h 54m

$595

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Mon 3/30

10:30 pm-11:50 am

1 stop10h 20m

Saint Thomas Island Cyril E King

Thu 4/30

1:15 pm-10:09 pm

1 stop11h 54m

$595

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Wed 3/25

10:30 pm-11:50 am

1 stop10h 20m

Saint Thomas Island Cyril E King

Thu 4/30

1:15 pm-10:09 pm

1 stop11h 54m

$595

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Mon 2/2

10:30 pm-3:54 pm

1 stop13h 24m

Saint Thomas Island Cyril E King

Sun 2/8

3:00 pm-9:14 pm

1 stop10h 14m

$647

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Tue 3/31

5:05 pm-11:50 am

2 stops15h 45m

Saint Thomas Island Cyril E King

Thu 4/30

1:15 pm-10:09 pm

1 stop11h 54m

$647

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Tue 3/31

5:05 pm-11:50 am

2 stops15h 45m

Saint Thomas Island Cyril E King

Wed 5/6

1:15 pm-10:09 pm

1 stop11h 54m

$647

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/14

Showing 1-10 of 20 results
1
2

Compare providers for flights from Ontario to Saint Thomas Island

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Saint Thomas Island in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Saint Thomas Island flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Saint Thomas Island flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Saint Thomas Island flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Saint Thomas Island flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Saint Thomas Island flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 Ontario to Saint Thomas Island?

Currently, April is the cheapest month in which you can book a flight from Ontario to Saint Thomas Island (average of $285). Flying from Ontario to Saint Thomas Island in June is currently the most expensive (average of $479). 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.

Reviews of airlines servicing Saint Thomas Island

Get insights into the airlines that provide service to Saint Thomas Island. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Saint Thomas Island. Reviews last updated October 14, 2025.
Read reviews from past customers who have flown American Airlines from Ontario to Saint Thomas Island. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,042 reviews

Boarding

7.5

Comfort

7.2

Overall

7.2

Crew

8.0

Entertainment

6.9

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.2
Good
11,042 reviews
American Airlines
7.2
Good
11,042 reviews

Boarding

7.5

Comfort

7.2

Overall

7.2

Crew

8.0

Entertainment

6.9

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

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.

  • How long is the flight from Ontario to Saint Thomas Island?

    There are many flights that can get you from Ontario to Saint Thomas Island in 10h 20m. Fly via Delta or American Airlines to get the fastest option. The distance from Ontario to Saint Thomas Island is about 3396 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Ontario to Saint Thomas Island round-trip?

    Currently priced at $567, American Airlines will fly you from Ontario to Saint Thomas Island and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip.

  • 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 Ontario to Saint Thomas Island?

    Currently, April is the cheapest month in which you can book a flight from Ontario to Saint Thomas Island (average of $285). Flying from Ontario to Saint Thomas Island in June is currently the most expensive (average of $479). 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

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

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Alternative routes for Ontario to Saint Thomas Island

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Top airline flying from Ontario to Saint Thomas Island

Discover the top airline 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 2,558,603 searches. Data last updated October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$493Average$1,115FlexibilityNo cancel feeOn-time71%

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