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Saint Thomas Island

$374+ 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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — STT
Dec 31 — Jan 71
Wed 12/31
Wed 1/7
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 December 1, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$595
(Delta)

One-way from

$374
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$831
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. 8% potential increase in price ($62 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 December 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 December 1, 2025.

This United Airlines deal was found by Cheapflights users on 12/1. 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 12/201:40 pmONT - STT
2 stops20h 50mUnited Airlines
Sat 12/273:35 pmSTT - ONT
1 stop10h 17mUnited Airlines
Deal found 12/1$1,065
This United Airlines deal was found by Cheapflights users on 11/30. 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.
Fri 12/196:04 amONT - STT
1 stop28h 26mUnited Airlines
Wed 12/245:20 pmSTT - ONT
2 stops32h 32mUnited Airlines
Deal found 11/30$1,074
This United Airlines deal was found by Cheapflights users on 11/30. 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.
Fri 12/1911:59 pmONT - STT
1 stop12h 19mUnited Airlines
Thu 1/13:05 pmSTT - ONT
1 stop11h 20mUnited Airlines
Deal found 11/30$1,344
This Delta deal was found by Cheapflights users on 11/30. 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.
Fri 12/1910:25 pmONT - STT
1 stop12h 40mDelta
Wed 12/241:48 pmSTT - ONT
1 stop10h 02mDelta
Deal found 11/30$1,573
This United Airlines deal was found by Cheapflights users on 12/1. 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.
Fri 12/196:04 amONT - STT
1 stop28h 26mUnited Airlines
Sun 1/45:20 pmSTT - ONT
2 stops23h 18mUnited Airlines
Deal found 12/1$1,690
This American Airlines deal was found by Cheapflights users on 11/30. 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.
Fri 12/198:02 pmONT - STT
2 stops17h 37mAmerican Airlines
Sun 1/46:36 pmSTT - ONT
2 stops21h 17mAmerican Airlines
Deal found 11/30$2,035
This United Airlines deal was found by Cheapflights users on 11/30. 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 12/2511:59 pmONT - STT
1 stop12h 19mUnited Airlines
Thu 1/13:05 pmSTT - ONT
1 stop11h 20mUnited Airlines
Deal found 11/30$2,459

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 December 1, 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

Sun 1/4

5:10 pm-12:42 pm

2 stops15h 32m

Saint Thomas Island Cyril E King

Tue 1/13

3:10 pm-9:05 pm

1 stop9h 55m

$595

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Sun 2/22

10:20 pm-3:04 pm

1 stop12h 44m

Saint Thomas Island Cyril E King

Thu 2/26

3:10 pm-9:05 pm

1 stop9h 55m

$595

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Fri 2/20

6:37 pm-2:30 pm

2 stops15h 53m

Saint Thomas Island Cyril E King

Sat 2/28

3:35 pm-9:59 pm

1 stop10h 24m

$685

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Mon 3/23

11:59 pm-3:18 pm

1 stop12h 19m

Saint Thomas Island Cyril E King

Thu 3/26

2:35 pm-10:36 pm

1 stop11h 01m

$685

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Sun 2/22

5:06 pm-4:52 pm

2 stops19h 46m

Saint Thomas Island Cyril E King

Thu 2/26

4:29 pm-10:29 pm

1 stop10h 00m

$705

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Mon 4/6

10:30 pm-1:55 pm

1 stop12h 25m

Saint Thomas Island Cyril E King

Thu 4/16

1:15 pm-10:09 pm

1 stop11h 54m

$887

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Wed 3/4

6:37 pm-12:00 pm

2 stops13h 23m

Saint Thomas Island Cyril E King

Sun 3/8

2:35 pm-12:48 pm

2 stops25h 13m

$938

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Sat 1/10

1:53 pm-1:56 pm

2 stops20h 03m

$374

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Sat 12/6

6:41 pm-4:18 pm

2 stops17h 37m

$483

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Tue 12/9

6:00 am-1:12 pm

3 stops27h 12m

$543

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/29

Showing 1-10 of 14 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Saint Thomas Island flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 December 1, 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
11,039 reviews

Boarding

7.5

Comfort

7.2

Food

6.5

Overall

7.2

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
4.0
Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.
American Airlines
7.2
Good
11,039 reviews
American Airlines
7.2
Good
11,039 reviews

Boarding

7.5

Comfort

7.2

Food

6.5

Overall

7.2

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
4.0
Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.

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 15h 32m. Fly via Delta or United 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 December 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$567Average$1,115FlexibilityNo cancel feeOn-time71%

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