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

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

What airlines fly to Ontario?

American Airlines, Spirit Airlines and Delta are the top three most popular airlines that fly to Ontario from Saint Thomas Island according to our data. American Airlines is the first choice among our users, with 60% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 3 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Saint Thomas Island Cyril E King Airport to Ontario Airport were last updated today.

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

What documentation or ID do you need to fly to Ontario Airport?

The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$552 Cheap Flights from Saint Thomas Island to Ontario in 2025/26

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Find the cheapest flights from Saint Thomas Island to Los Angeles

Round-trip

One-way

Cheap round-trip flights

1:53 pm - 7:37 pmSTT-ONT

9h 44m1 stop

10:29 pm - 12:43 pmONT-STT

10h 14m1 stop

$595Delta

Find Deal

Sun, Dec 21 - Sat, Jan 3

3:10 pm - 10:59 pmSTT-ONT

11h 49m1 stop

10:29 pm - 12:43 pmONT-STT

10h 14m1 stop

$647Delta

Find Deal

Sun, Dec 21 - Fri, Jan 2

1:39 pm - 10:42 pmSTT-ONT

12h 03m2 stops

10:29 pm - 12:00 pmONT-STT

10h 31m1 stop

$697American Airlines

Find Deal

Wed, Oct 22 - Tue, Oct 28

3:05 pm - 10:25 pmSTT-ONT

11h 20m1 stop

11:59 pm - 4:18 pmONT-STT

12h 19m1 stop

$712United Airlines

Find Deal

Thu, Dec 25 - Thu, Jan 1

3:05 pm - 10:25 pmSTT-ONT

11h 20m1 stop

11:59 pm - 4:18 pmONT-STT

12h 19m1 stop

$717United Airlines

Find Deal

Wed, Dec 24 - Thu, Jan 1

3:35 pm - 9:52 pmSTT-ONT

10h 17m1 stop

11:59 pm - 4:18 pmONT-STT

12h 19m1 stop

$721United Airlines

Find Deal

Sun, Dec 21 - Thu, Jan 1

3:05 pm - 10:25 pmSTT-ONT

11h 20m1 stop

11:59 pm - 4:18 pmONT-STT

12h 19m1 stop

$782United Airlines

Find Deal

Mon, Dec 22 - Thu, Jan 1

3:05 pm - 10:25 pmSTT-ONT

11h 20m1 stop

11:59 pm - 4:18 pmONT-STT

12h 19m1 stop

$791United Airlines

Find Deal

Mon, Dec 22 - Thu, Jan 1

3:05 pm - 10:25 pmSTT-ONT

11h 20m1 stop

11:59 pm - 4:18 pmONT-STT

12h 19m1 stop

$863United Airlines

Find Deal

Tue, Dec 23 - Thu, Jan 1

12:40 pm - 9:36 pmSTT-ONT

11h 56m1 stop

10:29 pm - 12:00 pmONT-STT

10h 31m1 stop

$920American Airlines

Find Deal

Wed, Oct 22 - Tue, Oct 28

Delta flights from Saint Thomas Island to Ontario

Our best Delta deals on Saint Thomas Island to Ontario flight tickets

Delta

Dec 21

STT1:53 pmSaint Thomas Island Cyril E King

9h 44m

1 stop

ONT7:37 pmOntario

Jan 3

ONT10:29 pmOntario

10h 14m

1 stop

STT12:43 pmSaint Thomas Island Cyril E King

$595

Find similar

Delta

Dec 21

STT1:53 pmSaint Thomas Island Cyril E King

13h 06m

1 stop

ONT10:59 pmOntario

Jan 2

ONT10:29 pmOntario

10h 14m

1 stop

STT12:43 pmSaint Thomas Island Cyril E King

$647

Find similar

United Airlines flights from Saint Thomas Island to Ontario

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

United Airlines

Dec 25

STT3:05 pmSaint Thomas Island Cyril E King

11h 20m

1 stop

ONT10:25 pmOntario

Jan 1

ONT11:59 pmOntario

12h 19m

1 stop

STT4:18 pmSaint Thomas Island Cyril E King

$712

Find similar

United Airlines

Dec 24

STT3:05 pmSaint Thomas Island Cyril E King

11h 20m

1 stop

ONT10:25 pmOntario

Jan 1

ONT11:59 pmOntario

12h 19m

1 stop

STT4:18 pmSaint Thomas Island Cyril E King

$717

Find similar

United Airlines

Dec 21

STT3:35 pmSaint Thomas Island Cyril E King

10h 17m

1 stop

ONT9:52 pmOntario

Jan 1

ONT11:59 pmOntario

12h 19m

1 stop

STT4:18 pmSaint Thomas Island Cyril E King

$721

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Sun 12/21

1:53 pm-7:37 pm

1 stop9h 44m

Ontario

Sat 1/3

10:29 pm-12:43 pm

1 stop10h 14m

$595

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Sun 12/21

3:10 pm-10:59 pm

1 stop11h 49m

Ontario

Fri 1/2

10:29 pm-12:43 pm

1 stop10h 14m

$647

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Wed 10/22

1:39 pm-10:42 pm

2 stops12h 03m

Ontario

Tue 10/28

10:29 pm-12:00 pm

1 stop10h 31m

$697

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Thu 12/25

3:05 pm-10:25 pm

1 stop11h 20m

Ontario

Thu 1/1

11:59 pm-4:18 pm

1 stop12h 19m

$712

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Wed 12/24

3:05 pm-10:25 pm

1 stop11h 20m

Ontario

Thu 1/1

11:59 pm-4:18 pm

1 stop12h 19m

$717

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Sun 12/21

3:35 pm-9:52 pm

1 stop10h 17m

Ontario

Thu 1/1

11:59 pm-4:18 pm

1 stop12h 19m

$721

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Mon 12/22

3:05 pm-10:25 pm

1 stop11h 20m

Ontario

Thu 1/1

11:59 pm-4:18 pm

1 stop12h 19m

$782

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Mon 12/22

3:05 pm-10:25 pm

1 stop11h 20m

Ontario

Thu 1/1

11:59 pm-4:18 pm

1 stop12h 19m

$791

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Tue 12/23

3:05 pm-10:25 pm

1 stop11h 20m

Ontario

Thu 1/1

11:59 pm-4:18 pm

1 stop12h 19m

$863

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Wed 10/22

12:40 pm-9:36 pm

1 stop11h 56m

Ontario

Tue 10/28

10:29 pm-12:00 pm

1 stop10h 31m

$920

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 Saint Thomas Island to Ontario

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

Prices

Airlines

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as $594. This is often the case because there is less demand to fly during this day of the week. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Saint Thomas Island to Ontario for around $629.

When to book flights from Saint Thomas Island to Ontario

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

Estimated round-trip price

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

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

Direct flights	None

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

Search flight deals

How far is Saint Thomas Island Cyril E King to Ontario by plane?
There are 3401.6 mi between Saint Thomas Island Cyril E King and Ontario. 10h 17m is a normal flight duration for this route.
When did momondo last update prices for flights from Saint Thomas Island Cyril E King Airport to Ontario Airport?
Prices for flights from Saint Thomas Island Cyril E King Airport to Ontario Airport were last updated today.
How old do you have to be to fly from Saint Thomas Island Cyril E King Airport to Ontario 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 Saint Thomas Island Cyril E King Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Saint Thomas Island to Ontario. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Saint Thomas Island to Ontario on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Saint Thomas Island and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Ontario from Saint Thomas Island 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.