ONT - STT

$179 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 2/20. 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, 0 bags

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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Everything you should know

Cheapest round-trip
$595
American Airlines
Sat 1/3Fri 1/9
ONT - STT • 2 stops
Cheapest one-way
$179
Multiple Airlines
Fri 2/20
ONT - STT • 2 stops
Top airlines
American Airlines
Cheapest • from $595 (round-trip)
American Airlines
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Saint Thomas Island!
Flight Deals
Booking Insights
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, Jan 3 - Fri, Jan 9
American Airlines Logo
7:18 pm - 12:05 pmONT-STT
12h 47m2 stops
American Airlines Logo
6:39 pm - 12:03 pmSTT-ONT
21h 24m2 stops
$595American Airlines
Find Deal
Wed, Dec 31 - Wed, Jan 7
American Airlines Logo
10:40 pm - 12:05 pmONT-STT
9h 25m1 stop
American Airlines Logo
6:39 pm - 10:08 amSTT-ONT
19h 29m2 stops
$624American Airlines
Find Deal
Sat, Jan 3 - Fri, Jan 9
American Airlines Logo
10:40 pm - 12:05 pmONT-STT
9h 25m1 stop
American Airlines Logo
6:39 pm - 2:18 pmSTT-ONT
23h 39m2 stops
$627American Airlines
Find Deal
Mon, Mar 2 - Thu, Mar 5
United Airlines Logo
6:37 pm - 12:00 pmONT-STT
13h 23m2 stops
United Airlines Logo
3:05 pm - 10:25 pmSTT-ONT
11h 20m1 stop
$685United Airlines
Find Deal
Wed, Dec 31 - Thu, Jan 8
American Airlines Logo
12:55 pm - 12:40 pmONT-STT
19h 45m2 stops
American Airlines Logo
3:16 pm - 9:08 amSTT-ONT
21h 52m2 stops
$705American Airlines
Find Deal
Sat, Jan 3 - Sun, Jan 11
American Airlines Logo
7:18 pm - 5:39 pmONT-STT
18h 21m2 stops
American Airlines Logo
2:54 pm - 10:08 amSTT-ONT
23h 14m2 stops
$737American Airlines
Find Deal
Sat, Mar 14 - Wed, Mar 18
United Airlines Logo
11:59 pm - 3:18 pmONT-STT
12h 19m1 stop
United Airlines Logo
2:35 pm - 10:36 pmSTT-ONT
11h 01m1 stop
$863United Airlines
Find Deal
Wed, Dec 17 - Thu, Dec 25
Delta Logo
10:25 pm - 2:43 pmONT-STT
12h 18m1 stop
Delta Logo
1:48 pm - 7:50 pmSTT-ONT
10h 02m1 stop
$887Delta
Find Deal
Mon, Dec 29 - Thu, Jan 8
United Airlines Logo
11:59 pm - 4:18 pmONT-STT
12h 19m1 stop
United Airlines Logo
3:05 pm - 11:18 amSTT-ONT
24h 13m3 stops
$1,001United Airlines
Find Deal
Sat, Dec 20 - Wed, Dec 31
United Airlines Logo
11:59 pm - 4:18 pmONT-STT
12h 19m1 stop
United Airlines Logo
5:20 pm - 12:38 pmSTT-ONT
23h 18m2 stops
$1,191United Airlines
Find Deal
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$179
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 $179 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 11050 reviews
8.0Crew
6.9Entertainment
7.5Boarding
7.2Comfort
6.4Food
Airline reviews

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

10.0 ExcellentAnonymous, Nov 2025SBA - PHX
Read more American Airlines reviews

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

The flight was flawless and we even arrived between 20 and 25 minutes early!

Always seated jammed in rear of aircraft Admirals Club food at DFW terminal D was absolute worst food experience and I pay $600/year to eat this dried out junk

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

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.

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

Information on your arrival and departure airports