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$352+ Cheap flights from Saint Thomas Island (STT) to Ontario (ONT)

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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
STT — ONT
Mar 15 — Mar 221
Sun 3/15
Sun 3/22
1 adult, Economy
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Cheap flight deals from Saint Thomas Island to Ontario

Cheapest flights from Saint Thomas Island to Ontario
Explore the most affordable flight options available from Saint Thomas Island to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.

This United Airlines deal was found by Cheapflights users on 2/9. 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 3/122:05 pm
STT
-
ONT
1 stop11h 13m
United Airlines
Thu 3/191:40 pm
ONT
-
STT
2 stops20h 50m
United Airlines
Deal found 2/9$866
This United Airlines deal was found by Cheapflights users on 2/11. 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 3/282:35 pm
STT
-
ONT
1 stop11h 01m
United Airlines
Sat 4/41:34 pm
ONT
-
STT
2 stops20h 34m
United Airlines
Deal found 2/11$1,166
This United Airlines deal was found by Cheapflights users on 2/11. 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 3/272:35 pm
STT
-
ONT
2 stops25h 13m
United Airlines
Sun 3/297:00 am
ONT
-
STT
1 stop29h 31m
United Airlines
Deal found 2/11$1,224

Find flight deals from Saint Thomas Island to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Saint Thomas Island (STT) to Ontario (ONT). 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 February 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$866
(United Airlines)

One-way from

$352
(Trip.com)
Provider with most accurate pricing for Saint Thomas Island Cyril E King-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Saint Thomas Island Cyril E King-Ontario flights.
Search Deals
From Saint Thomas Island Cyril E King to Ontario
Search Deals
One-way flight from Saint Thomas Island Cyril E King to Ontario
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Saint Thomas Island to Ontario 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 February 13, 2026.
Use the filters below to find and compare flights from Saint Thomas Island to Ontario that are best for you.

Fly from

Saint Thomas Island

Fly to

Ontario

Route

Depart

Return

Price

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Thu 3/12

2:05 pm-10:18 pm

1 stop11h 13m

Ontario

Thu 3/19

1:40 pm-1:30 pm

2 stops20h 50m

$866

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Sat 3/28

2:35 pm-10:36 pm

1 stop11h 01m

Ontario

Sat 4/4

1:34 pm-1:08 pm

2 stops20h 34m

$1,166

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Fri 3/27

2:35 pm-12:48 pm

2 stops25h 13m

Ontario

Sun 3/29

7:00 am-3:31 pm

1 stop29h 31m

$1,224

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Thu 2/19

3:36 pm-11:59 pm

2 stops36h 23m

$352

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Thu 3/12

2:05 pm-10:18 pm

1 stop11h 13m

$360

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Mon 3/23

2:05 pm-10:18 pm

1 stop11h 13m

$360

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Sun 3/8

2:05 pm-10:18 pm

1 stop11h 13m

$360

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Tue 3/24

12:02 pm-10:18 pm

2 stops13h 16m

$402

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Fri 3/27

12:49 pm-9:00 pm

1 stop11h 11m

$502

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Thu 2/19

3:05 pm-12:38 pm

2 stops25h 33m

$562

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

Compare providers for flights from Saint Thomas Island to Ontario

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 Saint Thomas Island to Ontario in February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust 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 Saint Thomas Island-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Saint Thomas Island-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Saint Thomas Island-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Saint Thomas Island-Ontario 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 Saint Thomas Island-Ontario 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 Saint Thomas Island to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Saint Thomas Island 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.

Related info for your journey

Find useful and relevant information for your journey from Saint Thomas Island to Ontario. 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 Saint Thomas Island to Ontario?

    A quick flight from Saint Thomas Island to Ontario can take about 11h 13m. United Airlines provides one of the quickest options available for as low as $866. Airlines will cover a distance of 3396 mi.

  • Can I find deals for flights from Saint Thomas Island to Ontario that include hotel bookings?

    Yes. In addition to deals on Saint Thomas Island to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Saint Thomas Island to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Saint Thomas Island to Ontario.

  • Can I find deals for business class flights from Saint Thomas Island to Ontario?

    Yes. Cheapflights offers flight deals from Saint Thomas Island to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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