ONT - STT

$467 Find Cheap Flights from Ontario to Saint Thomas Island - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$520
Typical prices: $697-$1,079
Delta
Thu 10/4Mon 10/22
ONT - STT • 1 stop
Cheapest one-way
$307
Typical prices: $498-$522
United Airlines
Thu 1/4
ONT - STT • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Ontario and Saint Thomas Island. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
April
Cheapest • 37% price drop
May
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Charlotte Douglas (CLT)
Cheapest • Avg $748 (round-trip)
Atlanta Hartsfield-Jackson (ATL)
Shortest trip • 10h 12m (one-way)
Insights
Insights
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We hope you love your trip to Saint Thomas Island!
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Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Sun, Oct 4 - Thu, Oct 22
Delta Logo
10:00 pm - 1:42 pmONT  Ontario-STT Saint Thomas Island Cyril E King
12h 42m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:47 pm - 9:54 pmSTT  Saint Thomas Island Cyril E King-ONT Ontario
10h 07m1 stop Atlanta Hartsfield-Jackson
$520Delta
Wed, Feb 3 - Thu, Feb 4
United Airlines Logo
1:00 pm - 12:00 pmONT  Ontario-STT Saint Thomas Island Cyril E King
19h 00m2 stops Denver Intl Newark
United Airlines Logo
3:05 pm - 6:44 pmSTT  Saint Thomas Island Cyril E King-ONT Ontario
31h 39m1 stop Chicago O'Hare Intl
$930United Airlines
Wed, Feb 3 - Thu, Feb 4
United Airlines Logo
1:00 pm - 12:00 pmONT  Ontario-STT Saint Thomas Island Cyril E King
19h 00m2 stops Denver Intl Newark
United Airlines Logo
3:05 pm - 8:20 pmSTT  Saint Thomas Island Cyril E King-ONT Ontario
33h 15m2 stops Chicago O'Hare Intl Denver Intl
$935United Airlines
Wed, Feb 3 - Thu, Feb 4
United Airlines Logo
1:00 pm - 12:00 pmONT  Ontario-STT Saint Thomas Island Cyril E King
19h 00m2 stops Denver Intl Newark
United Airlines Logo
3:05 pm - 6:44 pmSTT  Saint Thomas Island Cyril E King-ONT Ontario
31h 39m1 stop Chicago O'Hare Intl
$958United Airlines
Wed, Feb 3 - Thu, Feb 4
United Airlines Logo
1:00 pm - 12:00 pmONT  Ontario-STT Saint Thomas Island Cyril E King
19h 00m2 stops Denver Intl Newark
United Airlines Logo
3:05 pm - 8:20 pmSTT  Saint Thomas Island Cyril E King-ONT Ontario
33h 15m2 stops Chicago O'Hare Intl Denver Intl
$963United Airlines
Sun, Oct 4 - Fri, Oct 23
Delta Logo
10:00 pm - 1:42 pmONT  Ontario-STT Saint Thomas Island Cyril E King
12h 42m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:47 pm - 9:54 pmSTT  Saint Thomas Island Cyril E King-ONT Ontario
10h 07m1 stop Atlanta Hartsfield-Jackson
$974Delta
Sun, Sep 13 - Sun, Sep 20
Multiple Airlines Logo
6:00 am - 7:50 amONT  Ontario-STT Saint Thomas Island Cyril E King
22h 50m2 stops Houston George Bush Intcntl San Juan Luis Munoz Marin Intl
Multiple Airlines Logo
5:40 pm - 9:59 pmSTT  Saint Thomas Island Cyril E King-ONT Ontario
31h 19m2 stops San Juan Luis Munoz Marin Intl Houston George Bush Intcntl
$1,054Multiple Airlines
Sat, Oct 10 - Sun, Oct 18
Multiple Airlines Logo
5:00 am - 10:14 amONT  Ontario-STT Saint Thomas Island Cyril E King
26h 14m2 stops Denver Intl San Juan Luis Munoz Marin Intl
Multiple Airlines Logo
8:39 am - 9:59 pmSTT  Saint Thomas Island Cyril E King-ONT Ontario
16h 20m2 stops San Juan Luis Munoz Marin Intl Houston George Bush Intcntl
$1,132Multiple Airlines
Thu, Sep 3 - Mon, Sep 7
American Airlines Logo
12:59 pm - 3:52 pmONT  Ontario-STT Saint Thomas Island Cyril E King
23h 53m2 stops Phoenix Sky Harbor Intl Miami
American Airlines Logo
1:49 pm - 9:34 amSTT  Saint Thomas Island Cyril E King-ONT Ontario
22h 45m2 stops Miami Dallas/Fort Worth
$1,295American Airlines
Thu, Sep 3 - Mon, Sep 7
American Airlines Logo
12:59 pm - 3:52 pmONT  Ontario-STT Saint Thomas Island Cyril E King
23h 53m2 stops Phoenix Sky Harbor Intl Miami
American Airlines Logo
4:42 pm - 11:43 amSTT  Saint Thomas Island Cyril E King-ONT Ontario
22h 01m2 stops Miami Dallas/Fort Worth
$1,295American Airlines
Booking Insights

Price, demand and travel trends for Ontario to Saint Thomas Island flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Ontario to Saint Thomas Island with more confidence.

How much is a round-trip flight from Ontario to Saint Thomas Island?

Round-trip flights from Ontario to Saint Thomas Island start at $520. Prices are below average for this route right now, with typical round-trip fares ranging from $697 to $1,079. The lowest price found in the past 5 days was $520 on Delta.

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Key details for Ontario to Saint Thomas Island flights

Low season

August

Cheapest flight

$307
Most popular time to fly and prices are also 17% lower on average.
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

Your Ontario to Saint Thomas Island flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Ontario to Saint Thomas Island?

    Flights from Ontario to Saint Thomas Island usually depart from Ontario (ONT) and arrive at Saint Thomas Island Cyril E King (STT).

  • What cabin classes can I book on flights from Ontario to Saint Thomas Island?

    Only Economy Class is available on flights from Ontario to Saint Thomas Island.

  • Which airports do connecting flights from Ontario to Saint Thomas Island pass through?

    Connecting flights from Ontario to Saint Thomas Island most commonly pass through:

    • Charlotte Douglas (CLT) - 75% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 25% of one-stop connections
    Together, these airports account for 100% of one-stop bookings on this route.

  • Can I save money by using flexible dates for flights from Ontario to Saint Thomas Island?

    Yes. Being flexible with your travel dates can save you up to 48% on the Ontario to Saint Thomas Island route. Monday is the cheapest departure day at $674 round-trip on average, while Saturday is the most expensive at $1,280, a difference of $606. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Saint Thomas Island?

    Some of the most popular sights in Saint Thomas Island are Sapphire Beach, Magens Bay and Coki Beach. These are among the most viewed places in Saint Thomas Island on KAYAK.

  • How long is a flight from Ontario to Saint Thomas Island?

    A nonstop flight from Ontario to Saint Thomas Island takes 0h 00m, covering 3,396 miles.

  • What are the earliest and latest flights from Ontario to Saint Thomas Island?

    These are the earliest and latest flight times available from Ontario to Saint Thomas Island:

    • Earliest: departs at 12:00 am and lands at 12:00 am
    • Latest: departs at 12:00 am and lands at 12:00 am.

    The flight takes about 0h 00m.

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

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Ontario to Saint Thomas Island looking right now?

    One-way fares from Ontario to Saint Thomas Island are currently lower than usual. Average one-way flight prices are about $484, which is 8% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Ontario to Saint Thomas Island?

    Flying via Charlotte Douglas (CLT) gives the shortest average 1-stop total travel time at 10h 04m, compared with 10h 12m via Atlanta Hartsfield-Jackson (ATL).

  • What is the time difference between Ontario and Saint Thomas Island?

    Saint Thomas Island is 3 hours ahead of Ontario (Atlantic Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Saint Thomas Island Cyril E King Airport (STT)?

    Saint Thomas Island Cyril E King Airport (STT) hosts 5 major car rental companies, with daily rates starting from around $19 for economy cars. Top options include:
    · Budget
    · Thrifty
    · Dollar
    · Alamo
    · Hertz

  • How much should I expect to pay for a Ontario to Saint Thomas Island flight?

    Round-trip flights from Ontario to Saint Thomas Island range from $697 to $1,079, with an average of $875 over the past 12 months. Anything below $697 counts as a good deal.

Your guide to booking Ontario to Saint Thomas Island flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Monday departure instead of Saturday. On this route, Monday flights average $674 - about $606 less than Saturday (47% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Ontario to Saint Thomas Island trip for April. Fares historically average $547 round-trip in that month - typically $733 less than the most expensive month, which is February (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Saint Thomas Island Cyril E King Airport.
    - Starz Hotel
    - Sunset Gardens Guesthouse
    - Island View Guesthouse

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

Information on your arrival and departure airports

Ontario (ONT)
Saint Thomas Island (STT)