HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$397+ 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 11/22. Fares are subject to change and may not be available on all flights or dates of travel.
STT — ONT
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Saint Thomas Island to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Saint Thomas Island to Ontario

One-way flights from Saint Thomas Island to Ontario
Search for one-way flight options from Saint Thomas Island to Ontario. Find affordable one-way fares based on user searches. Data last updated October 28, 2025.

This United Airlines deal was found by Cheapflights users on 10/26. 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 11/223:05 pmSTT - ONT
1 stop11h 26mUnited Airlines
Deal found 10/26$397
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Sun 11/233:35 pmSTT - ONT
2 stops25h 02mUnited Airlines
Deal found 10/27$495
This United deal was found by Cheapflights users on 10/27. 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.
Fri 11/1410:25 amSTT - ONT
2 stops14h 19mMultiple Airlines
Deal found 10/27$511
This United deal was found by Cheapflights users on 10/26. 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.
Sat 11/2210:21 amSTT - ONT
2 stops15h 28mMultiple Airlines
Deal found 10/26$541
This United deal was found by Cheapflights users on 10/27. 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.
Sat 11/1510:21 amSTT - ONT
2 stops15h 28mMultiple Airlines
Deal found 10/27$591
This United deal was found by Cheapflights users on 10/26. 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.
Fri 11/2111:45 amSTT - ONT
2 stops12h 59mMultiple Airlines
Deal found 10/26$666
This United deal was found by Cheapflights users on 10/27. 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 11/259:10 amSTT - ONT
2 stops15h 34mMultiple Airlines
Deal found 10/27$789
This United Airlines deal was found by Cheapflights users on 10/27. 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 11/271:02 pmSTT - ONT
2 stops27h 35mUnited Airlines
Deal found 10/27$798
This United Airlines deal was found by Cheapflights users on 10/26. 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 11/212:15 pmSTT - ONT
2 stops35h 34mUnited Airlines
Deal found 10/26$814
This United deal was found by Cheapflights users on 10/27. 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.
Fri 11/288:00 amSTT - ONT
2 stops16h 44mMultiple Airlines
Deal found 10/27$962

Cheap 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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Popular in

October

Cheapest in

April

Average price

$1,454
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
Highest demand for flights based on searches. 30% potential increase in price ($264 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 14% potential price decrease ($77 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 October 28, 2025.
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

Sat 11/22

3:05 pm-10:31 pm

1 stop11h 26m

$397

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Sun 11/23

3:35 pm-12:37 pm

2 stops25h 02m

$495

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Sat 11/15

9:10 am-9:49 pm

2 stops16h 39m

$541

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Sat 11/22

10:16 am-9:49 pm

2 stops15h 33m

$541

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Fri 11/14

9:10 am-9:49 pm

2 stops16h 39m

$581

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Fri 11/21

11:45 am-8:44 pm

2 stops12h 59m

$666

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Mon 11/24

12:01 pm-8:44 pm

2 stops12h 43m

$666

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Tue 11/25

10:45 am-9:49 pm

2 stops15h 04m

$789

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

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 October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
ExpediaPrice Accuracy2 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 Saint Thomas Island-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Saint Thomas Island-Ontario flight deals on Cheapflights vs. eDreams >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 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 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.

Cheapflights Insights

Everything you need to know about your flight from Saint Thomas Island to Ontario

What is the cheapest month to book a flight from Saint Thomas Island to Ontario?

Currently, February is the cheapest month in which you can book a flight from Saint Thomas Island to Ontario (average of $313). Flying from Saint Thomas Island to Ontario in August is currently the most expensive (average of $879). 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.

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.

  • 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.

  • What is the cheapest month to book a flight from Saint Thomas Island to Ontario?

    Currently, February is the cheapest month in which you can book a flight from Saint Thomas Island to Ontario (average of $313). Flying from Saint Thomas Island to Ontario in August is currently the most expensive (average of $879). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.