ONT - STT

$296 Find Cheap Flights from Ontario to Saint Thomas Island

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Saint Thomas Island departing on 11/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Saint Thomas Island

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Saint Thomas Island, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Saint Thomas Island, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Ontario to Saint Thomas Island (ONT-STT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Saint Thomas Island that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Saint Thomas Island

Sat, Nov 15 - Sat, Nov 22
United Airlines Logo
6:38 pm - 2:30 pmONT-STT
15h 52m2 stops
United Airlines Logo
3:35 pm - 9:49 pmSTT-ONT
10h 14m1 stop
$595United Airlines
Find Deal
Wed, Feb 18 - Fri, Feb 27
Delta Logo
10:30 pm - 12:50 pmONT-STT
10h 20m1 stop
Delta Logo
2:00 pm - 9:14 pmSTT-ONT
11h 14m1 stop
$647Delta
Find Deal
Mon, Mar 2 - Thu, Mar 5
United Airlines Logo
6:37 pm - 12:00 pmONT-STT
13h 23m2 stops
United Airlines Logo
3:40 pm - 9:21 pmSTT-ONT
9h 41m1 stop
$685United Airlines
Find Deal
Wed, Feb 11 - Wed, Feb 18
Delta Logo
10:30 pm - 12:50 pmONT-STT
10h 20m1 stop
Delta Logo
2:00 pm - 9:14 pmSTT-ONT
11h 14m1 stop
$699Delta
Find Deal
Mon, Mar 2 - Mon, Mar 9
American Airlines Logo
11:55 pm - 3:51 pmONT-STT
11h 56m1 stop
American Airlines Logo
5:30 pm - 1:40 pmSTT-ONT
23h 10m2 stops
$705American Airlines
Find Deal
Mon, Feb 16 - Mon, Feb 23
American Airlines Logo
11:55 pm - 3:50 pmONT-STT
11h 55m2 stops
American Airlines Logo
6:40 pm - 1:44 pmSTT-ONT
23h 04m2 stops
$730American Airlines
Find Deal
Tue, Feb 10 - Tue, Feb 17
American Airlines Logo
3:09 pm - 5:05 pmONT-STT
21h 56m2 stops
American Airlines Logo
1:30 pm - 9:40 pmSTT-ONT
12h 10m2 stops
$737American Airlines
Find Deal
Fri, Feb 6 - Fri, Feb 13
American Airlines Logo
11:59 pm - 3:56 pmONT-STT
11h 57m2 stops
American Airlines Logo
4:31 pm - 11:43 pmSTT-ONT
11h 12m1 stop
$757American Airlines
Find Deal
Wed, Mar 4 - Thu, Mar 12
American Airlines Logo
11:55 pm - 3:51 pmONT-STT
11h 56m1 stop
American Airlines Logo
5:30 pm - 8:35 amSTT-ONT
18h 05m2 stops
$778American Airlines
Find Deal
Sat, Nov 15 - Sat, Nov 22
Multiple Airlines Logo
6:38 pm - 4:18 pmONT-STT
17h 40m2 stops
Multiple Airlines Logo
10:21 am - 10:51 pmSTT-ONT
40h 30m3 stops
$1,138Multiple Airlines
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from $595 (round-trip)
American Airlines
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$595
United Airlines
Sat 11/15Sat 11/22
ONT - STT • 2 stops
Cheapest one-way
$296
Delta
Mon 11/17
ONT - STT • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Saint Thomas Island!
Booking Insights

KAYAK's insights & trends for Ontario to Saint Thomas Island flights

Get data-powered insights and trends into flights from Ontario to Saint Thomas Island to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Ontario to Saint Thomas Island?

The average price of all round-trip flights from Ontario to Saint Thomas Island clicked on KAYAK for each day over the last 12 months.

For Ontario to Saint Thomas Island, Thursday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Saint Thomas Island back to Ontario, the best deals are generally found on Wednesday, with Thursday being the most expensive.

Good to know

Cheapest flight$296
Flight from Ontario to Saint Thomas Island

When to book flights from Ontario to Saint Thomas Island

Are your dates flexible? Find out the best times to travel from Ontario to Saint Thomas Island based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Saint Thomas Island

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

    In the last 3 days, the lowest price for a flight from Ontario to Saint Thomas Island was $296 for a one-way ticket and $595 for a round-trip.

  • Do I need a passport to fly between Ontario and Saint Thomas Island?

    A passport is required to fly from Ontario to Saint Thomas Island.

  • Which aircraft models fly most regularly from Ontario to Saint Thomas Island?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Saint Thomas Island?

    oneworld is the only airline alliance operating flights between Ontario and Saint Thomas Island.

  • How does KAYAK find such low prices on flights from Ontario to Saint Thomas Island?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Saint Thomas Island.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Saint Thomas Island?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Saint Thomas Island from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Saint Thomas Island?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Saint Thomas Island with an airline and back to Ontario with another airline. Booking your flights between Ontario and STT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Saint Thomas Island?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Saint Thomas Island from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Ontario to Saint Thomas Island

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Saint Thomas Island. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Saint Thomas Island? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
American AirlinesOverall score based on 11033 reviews
8.0Crew
7.5Boarding
6.4Food
6.9Entertainment
7.2Comfort
Airline reviews

It was a red eye flight, so no meals were provided, but it was fine with snacks. The seats felt cramped and almost too narrow.

8.0 ExcellentAudis, Oct 2025SFO - MIA
Read more American Airlines reviews

It was a red eye flight, so no meals were provided, but it was fine with snacks. The seats felt cramped and almost too narrow.

Very crowded flight but what can you expect these days?? Crew was accommodating.

The seats in economy were appeared to be quite thin and lack sufficient cushioning to be comfortable. Perhaps it was my seating position but the plane seemed notably load.

The entertainment package was vast and the selections were very current. Keep updating it was great.

The seat was so hard my tailbone was aching The crew was kind of a b**** because I made a joke that I didn't care if they close the door I total c*** when she was trying to f****** act like she was mad at me because I said that The flight was bumpy. Sure you didnt have control over that.

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

While waiting to claim my checked luggage, I discovered the airline had lost it. After a long wait and inquiries, I discovered it was on another flight. Fortunately, the airline finally sent my luggage home.

Was not able to watch most shows on the entertainment site. They would not load

Our flight was 1.5 hours delayed. There was no weather for the inbound flight, so I don't understand why. This meant a VERY late arrival and only a quick nap before my morning flight.

Delayed flight, so I switched fights to SFO to Phoenix , Phoenix to DSM. Excellent service through American Airlines

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

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