When did momondo last update prices for flights from Ontario Airport to Saint Thomas Island Cyril E King Airport?

Prices for flights from Ontario Airport to Saint Thomas Island Cyril E King Airport are updated daily.

How many operators does momondo search for flights from Ontario Airport to Saint Thomas Island Cyril E King Airport?

There is 1 operator available for flights from Ontario Airport to Saint Thomas Island Cyril E King Airport as of October 2026.

How old do you have to be to fly from Ontario Airport to Saint Thomas Island Cyril E King Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Saint Thomas Island Cyril E King Airport.

What documentation or ID do you need to fly to Saint Thomas Island Cyril E King Airport?

The necessary travel and health documents for your Saint Thomas Island Cyril E King Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$342 Cheap Flights from Ontario to Saint Thomas Island in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Saint Thomas Island

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:08 pm - 11:35 amONT Ontario-STT Saint Thomas Island Cyril E King

18h 27m2 stops Dallas/Fort Worth Miami

2:14 pm - 8:39 amSTT Saint Thomas Island Cyril E King-ONT Ontario

21h 25m2 stops Miami Phoenix Sky Harbor Intl

$635American Airlines

Tue, Apr 27 - Mon, May 3

7:35 pm - 3:30 pmONT Ontario-STT Saint Thomas Island Cyril E King

16h 55m2 stops Phoenix Sky Harbor Intl Miami

4:34 pm - 10:09 amSTT Saint Thomas Island Cyril E King-ONT Ontario

20h 35m2 stops Miami Dallas/Fort Worth

$666American Airlines

Tue, Apr 27 - Sun, May 2

4:52 pm - 11:35 amONT Ontario-STT Saint Thomas Island Cyril E King

15h 43m2 stops Phoenix Sky Harbor Intl Miami

2:14 pm - 10:09 amSTT Saint Thomas Island Cyril E King-ONT Ontario

22h 55m2 stops Miami Dallas/Fort Worth

$666American Airlines

Tue, Apr 27 - Mon, May 3

6:50 pm - 3:00 pmONT Ontario-STT Saint Thomas Island Cyril E King

16h 10m2 stops Las Vegas Harry Reid Intl Orlando

3:20 pm - 7:45 amSTT Saint Thomas Island Cyril E King-ONT Ontario

20h 25m2 stops Orlando Las Vegas Harry Reid Intl

$738Southwest

Fri, Nov 13 - Tue, Nov 17

6:53 pm - 3:31 pmONT Ontario-STT Saint Thomas Island Cyril E King

17h 38m2 stops San Francisco Chicago O'Hare Intl

1:22 pm - 9:21 pmSTT Saint Thomas Island Cyril E King-ONT Ontario

10h 59m1 stop Houston George Bush Intcntl

$808United Airlines

Mon, Apr 26 - Thu, Apr 29

4:17 pm - 4:20 pmONT Ontario-STT Saint Thomas Island Cyril E King

20h 03m2 stops San Francisco Houston George Bush Intcntl

3:35 pm - 9:59 pmSTT Saint Thomas Island Cyril E King-ONT Ontario

10h 24m1 stop Houston George Bush Intcntl

$838United Airlines

Fri, Nov 27 - Sat, Dec 5

1:40 pm - 4:20 pmONT Ontario-STT Saint Thomas Island Cyril E King

22h 40m2 stops Denver Intl Houston George Bush Intcntl

3:35 pm - 10:11 pmSTT Saint Thomas Island Cyril E King-ONT Ontario

10h 36m1 stop Houston George Bush Intcntl

$838United Airlines

Wed, Dec 16 - Thu, Dec 24

1:40 pm - 4:20 pmONT Ontario-STT Saint Thomas Island Cyril E King

22h 40m2 stops Denver Intl Houston George Bush Intcntl

3:00 pm - 10:31 pmSTT Saint Thomas Island Cyril E King-ONT Ontario

11h 31m1 stop Chicago O'Hare Intl

$838United Airlines

Wed, Dec 16 - Thu, Dec 24

5:45 am - 4:20 pmONT Ontario-STT Saint Thomas Island Cyril E King

30h 35m1 stop Houston George Bush Intcntl

3:35 pm - 10:11 pmSTT Saint Thomas Island Cyril E King-ONT Ontario

10h 36m1 stop Houston George Bush Intcntl

$857United Airlines

Wed, Dec 16 - Thu, Dec 24

6:00 am - 4:20 pmONT Ontario-STT Saint Thomas Island Cyril E King

30h 20m1 stop Houston George Bush Intcntl

3:35 pm - 9:59 pmSTT Saint Thomas Island Cyril E King-ONT Ontario

10h 24m1 stop Houston George Bush Intcntl

$857United Airlines

Fri, Nov 27 - Sat, Dec 5

Cheap last minute flights

Enter your travel dates to find the best prices.

7:49 pm - 1:38 pmONT Ontario-STT Saint Thomas Island Cyril E King

13h 49m2 stops Phoenix Sky Harbor Intl Charlotte Douglas

3:15 pm - 9:00 amSTT Saint Thomas Island Cyril E King-ONT Ontario

21h 45m2 stops Miami Phoenix Sky Harbor Intl

$821American Airlines

Thu, Nov 5 - Tue, Nov 10

10:30 pm - 1:38 pmONT Ontario-STT Saint Thomas Island Cyril E King

11h 08m1 stop Charlotte Douglas

1:07 pm - 10:57 pmSTT Saint Thomas Island Cyril E King-ONT Ontario

13h 50m2 stops Miami Dallas/Fort Worth

$821American Airlines

Thu, Nov 5 - Tue, Nov 10

10:30 pm - 1:38 pmONT Ontario-STT Saint Thomas Island Cyril E King

11h 08m1 stop Charlotte Douglas

2:01 pm - 10:12 pmSTT Saint Thomas Island Cyril E King-ONT Ontario

12h 11m1 stop Charlotte Douglas

$821American Airlines

Thu, Nov 5 - Tue, Nov 10

1:29 pm - 1:56 pmONT Ontario-STT Saint Thomas Island Cyril E King

20h 27m2 stops Denver Intl Washington, D.C. Dulles Intl

1:07 pm - 10:48 pmSTT Saint Thomas Island Cyril E King-ONT Ontario

13h 41m2 stops Washington, D.C. Dulles Intl San Francisco

$988United Airlines

Thu, Nov 5 - Thu, Nov 12

6:30 am - 9:54 amONT Ontario-STT Saint Thomas Island Cyril E King

23h 24m3 stops Denver Intl Atlanta Hartsfield-Jackson San Juan Luis Munoz Marin Intl

12:01 pm - 10:42 amSTT Saint Thomas Island Cyril E King-ONT Ontario

26h 41m3 stops San Juan Luis Munoz Marin Intl Atlanta Hartsfield-Jackson Denver Intl

$1,019Multiple Airlines

Thu, Nov 5 - Thu, Nov 12

10:00 am - 12:46 pmONT Ontario-STT Saint Thomas Island Cyril E King

23h 46m3 stops Las Vegas Harry Reid Intl Orlando San Juan Luis Munoz Marin Intl

2:22 pm - 10:35 amSTT Saint Thomas Island Cyril E King-ONT Ontario

24h 13m3 stops San Juan Luis Munoz Marin Intl Miami Denver Intl

$1,093Multiple Airlines

Sat, Oct 31 - Wed, Nov 4

11:52 am - 4:13 pmONT Ontario-STT Saint Thomas Island Cyril E King

24h 21m3 stops Denver Intl Miami San Juan Luis Munoz Marin Intl

8:00 am - 10:35 amSTT Saint Thomas Island Cyril E King-ONT Ontario

30h 35m3 stops San Juan Luis Munoz Marin Intl Miami Denver Intl

$1,115Multiple Airlines

Thu, Nov 5 - Tue, Nov 10

6:37 pm - 1:56 pmONT Ontario-STT Saint Thomas Island Cyril E King

15h 19m2 stops San Francisco Washington, D.C. Dulles Intl

1:07 pm - 8:51 pmSTT Saint Thomas Island Cyril E King-ONT Ontario

35h 44m3 stops Washington, D.C. Dulles Intl New York LaGuardia Denver Intl

$1,157United Airlines

Thu, Nov 5 - Tue, Nov 10

6:00 pm - 2:37 pmONT Ontario-STT Saint Thomas Island Cyril E King

16h 37m2 stops Seattle/Tacoma Intl Atlanta Hartsfield-Jackson

3:53 pm - 9:57 pmSTT Saint Thomas Island Cyril E King-ONT Ontario

10h 04m1 stop Atlanta Hartsfield-Jackson

$1,998Delta

Thu, Nov 5 - Thu, Nov 12

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United Airlines flights from Ontario to Saint Thomas Island

Our best United Airlines deals on Ontario to Saint Thomas Island flight tickets

United Airlines

Apr 26

ONT6:53 pmOntario

17h 38m

2 stops

STT3:31 pmSaint Thomas Island Cyril E King

Apr 29

STT1:22 pmSaint Thomas Island Cyril E King

10h 59m

1 stop

ONT9:21 pmOntario

$808

United Airlines

Dec 16

ONT1:40 pmOntario

22h 40m

2 stops

STT4:20 pmSaint Thomas Island Cyril E King

Dec 24

STT3:00 pmSaint Thomas Island Cyril E King

11h 31m

1 stop

ONT10:31 pmOntario

$838

United Airlines

Dec 16

ONT5:45 amOntario

30h 35m

1 stop

STT4:20 pmSaint Thomas Island Cyril E King

Dec 24

STT3:35 pmSaint Thomas Island Cyril E King

10h 36m

1 stop

ONT10:11 pmOntario

$857

American Airlines flights from Ontario to Saint Thomas Island

Our best American Airlines deals on Ontario to Saint Thomas Island flight tickets

American Airlines

Apr 27

ONT2:08 pmOntario

18h 27m

2 stops

STT11:35 amSaint Thomas Island Cyril E King

May 3

STT2:14 pmSaint Thomas Island Cyril E King

21h 25m

2 stops

ONT8:39 amOntario

$635

American Airlines

Apr 27

ONT7:35 pmOntario

16h 55m

2 stops

STT3:30 pmSaint Thomas Island Cyril E King

May 2

STT4:34 pmSaint Thomas Island Cyril E King

20h 35m

2 stops

ONT10:09 amOntario

$666

American Airlines

Apr 27

ONT10:26 pmOntario

13h 23m

1 stop

STT2:49 pmSaint Thomas Island Cyril E King

May 3

STT2:14 pmSaint Thomas Island Cyril E King

21h 25m

2 stops

ONT8:39 amOntario

$673

momondo Fare Finder

Use the filters below to find and compare flights from Ontario to Saint Thomas Island that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSaint Thomas Island

ONT Ontario - STT Saint Thomas Island Cyril E King

ONTSTT

Ontario

Tue 4/27

2:08 pm-11:35 am

2 stops18h 27m

Saint Thomas Island Cyril E King

Mon 5/3

2:14 pm-8:39 am

2 stops21h 25m

$635

OntarioSaint Thomas Island

ONT Ontario - STT Saint Thomas Island Cyril E King

ONTSTT

Ontario

Tue 4/27

7:35 pm-3:30 pm

2 stops16h 55m

Saint Thomas Island Cyril E King

Sun 5/2

4:34 pm-10:09 am

2 stops20h 35m

$666

OntarioSaint Thomas Island

ONT Ontario - STT Saint Thomas Island Cyril E King

ONTSTT

Ontario

Tue 4/27

4:52 pm-11:35 am

2 stops15h 43m

Saint Thomas Island Cyril E King

Mon 5/3

2:14 pm-10:09 am

2 stops22h 55m

$666

OntarioSaint Thomas Island

ONT Ontario - STT Saint Thomas Island Cyril E King

ONTSTT

Ontario

Fri 11/13

6:50 pm-3:00 pm

2 stops16h 10m

Saint Thomas Island Cyril E King

Tue 11/17

3:20 pm-7:45 am

2 stops20h 25m

$738

Quickest round-trip

OntarioSaint Thomas Island

ONT Ontario - STT Saint Thomas Island Cyril E King

ONTSTT

Ontario

Mon 4/26

6:53 pm-3:31 pm

2 stops17h 38m

Saint Thomas Island Cyril E King

Thu 4/29

1:22 pm-9:21 pm

1 stop10h 59m

$808

OntarioSaint Thomas Island

ONT Ontario - STT Saint Thomas Island Cyril E King

ONTSTT

Ontario

Fri 11/27

4:17 pm-4:20 pm

2 stops20h 03m

Saint Thomas Island Cyril E King

Sat 12/5

3:35 pm-9:59 pm

1 stop10h 24m

$838

OntarioSaint Thomas Island

ONT Ontario - STT Saint Thomas Island Cyril E King

ONTSTT

Ontario

Wed 12/16

1:40 pm-4:20 pm

2 stops22h 40m

Saint Thomas Island Cyril E King

Thu 12/24

3:35 pm-10:11 pm

1 stop10h 36m

$838

OntarioSaint Thomas Island

ONT Ontario - STT Saint Thomas Island Cyril E King

ONTSTT

Ontario

Wed 12/16

1:40 pm-4:20 pm

2 stops22h 40m

Saint Thomas Island Cyril E King

Thu 12/24

3:00 pm-10:31 pm

1 stop11h 31m

$838

OntarioSaint Thomas Island

ONT Ontario - STT Saint Thomas Island Cyril E King

ONTSTT

Ontario

Wed 12/16

5:45 am-4:20 pm

1 stop30h 35m

Saint Thomas Island Cyril E King

Thu 12/24

3:35 pm-10:11 pm

1 stop10h 36m

$857

OntarioSaint Thomas Island

ONT Ontario - STT Saint Thomas Island Cyril E King

ONTSTT

Ontario

Fri 11/27

6:00 am-4:20 pm

1 stop30h 20m

Saint Thomas Island Cyril E King

Sat 12/5

3:35 pm-9:59 pm

1 stop10h 24m

$857

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Saint Thomas Island

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Ontario to Saint Thomas Island Cyril E King?

United Airlines and Southwest are the most popular carriers operating from Ontario to Saint Thomas Island Cyril E King

What airlines fly to Saint Thomas Island?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Saint Thomas Island from Ontario according to our data. American Airlines is the first choice among our users, with 72% of people opting to fly with this airline when traveling to Saint Thomas Island. Keep in mind that there are 4 different airlines that fly to Saint Thomas Island on a routine basis, so you have a few additional options to choose from.

When to book flights from Ontario to Saint Thomas Island

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Saint Thomas Island according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Saint Thomas Island (ONT to STT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Saint Thomas Island

Best Price Found	$342
Fastest flight time	10h 39m
Direct flights	None

The best one-way flight to Saint Thomas Island from Ontario in the past 72 hours is $342. The best round-trip flight deal from Ontario to Saint Thomas Island found on momondo in the last 72 hours is $635.

The fastest flight from Ontario to Saint Thomas Island takes 10h 39m

There are no direct flights from Ontario to Saint Thomas Island. There are no popular flight routes from Ontario to Saint Thomas Island.

Search flight deals

Frequently asked questions about flying from Ontario to Saint Thomas Island

How far is Ontario to Saint Thomas Island Cyril E King by plane?
Ontario and Saint Thomas Island Cyril E King are 3401.6 mi apart from one another. A reasonable flight in good conditions will take 10h 39m.
When did momondo last update prices for flights from Ontario Airport to Saint Thomas Island Cyril E King Airport?
Prices for flights from Ontario Airport to Saint Thomas Island Cyril E King Airport are updated daily.
How many operators does momondo search for flights from Ontario Airport to Saint Thomas Island Cyril E King Airport?
There is 1 operator available for flights from Ontario Airport to Saint Thomas Island Cyril E King Airport as of October 2026.
How old do you have to be to fly from Ontario Airport to Saint Thomas Island Cyril E King Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Saint Thomas Island Cyril E King Airport.
What documentation or ID do you need to fly to Saint Thomas Island Cyril E King Airport?
The necessary travel and health documents for your Saint Thomas Island Cyril E King Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Ontario to Saint Thomas Island?
Based on momondo bookings for flights between Ontario and Saint Thomas Island, the leading airline is American Airlines, making up 100% of the total bookings.

Best airlines flying from Ontario to Saint Thomas Island

Compare and see reviews for airlines that fly from Ontario to Saint Thomas Island with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $644	Free Cancellation	Rating 7.0 12,209 reviews		Search American Airlines flights

St. John

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Saint Thomas Island?

It is quick and easy to find Ontario to Saint Thomas Island flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Saint Thomas Island that suits you.

Can I find flights from Ontario to Saint Thomas Island with flexible booking policies on momondo?

Yes. All flights to Saint Thomas Island from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ontario to Saint Thomas Island?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Saint Thomas Island from Ontario.

I’m not ready to book a flight from Ontario to Saint Thomas Island right now. Can momondo alert me if prices change?

Price alerts on flights to Saint Thomas Island from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Saint Thomas Island trip

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Cheap flights from Ontario to Saint Thomas Island from $342

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Saint Thomas Island departing on 4/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Ontario to Saint Thomas Island

Our best United Airlines deals on Ontario to Saint Thomas Island flight tickets

American Airlines flights from Ontario to Saint Thomas Island

Our best American Airlines deals on Ontario to Saint Thomas Island flight tickets

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Use the filters below to find and compare flights from Ontario to Saint Thomas Island that are best for you.

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How to get the cheapest flight ticket from Ontario to Saint Thomas Island

What is the cheapest airline that flies from Ontario to Saint Thomas Island Cyril E King?

What airlines fly to Saint Thomas Island?

When to book flights from Ontario to Saint Thomas Island

Cheap Ontario to Saint Thomas Island (ONT to STT) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Ontario to Saint Thomas Island

Best airlines flying from Ontario to Saint Thomas Island

Compare and see reviews for airlines that fly from Ontario to Saint Thomas Island with momondo

Traveling to a place near Saint Thomas Island?

Why use momondo?

An easier way to manage your Saint Thomas Island trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the U.S. Virgin Islands

Airports servicing U.S. Virgin Islands

Fly your favorite airline to Saint Thomas Island

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Saint Thomas Island

List of cabin classes available on flights landing in Saint Thomas Island. Availability may vary depending on flight origin and airline.

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According to popular flight searches on momondo this year

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