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 58% 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.

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

Delta is the most popular carrier operating from Saint Thomas Island Cyril E King to Ontario

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.

$458 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

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One-way

Cheap round-trip flights

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3:35 pm - 9:49 pmSTT-ONT

10h 14m1 stop

6:39 pm - 12:00 pmONT-STT

13h 21m2 stops

$685United Airlines

Find Deal

Sat, Dec 6 - Thu, Jan 8

3:05 pm - 10:25 pmSTT-ONT

11h 20m1 stop

11:59 pm - 4:18 pmONT-STT

12h 19m1 stop

$1,267United Airlines

Find Deal

Sat, Dec 20 - Sun, Jan 4

3:50 pm - 11:04 pmSTT-ONT

11h 14m1 stop

10:25 pm - 2:40 pmONT-STT

12h 15m1 stop

$2,088Delta

Find Deal

Wed, Nov 26 - Sat, Nov 29

3:50 pm - 11:52 pmSTT-ONT

12h 02m2 stops

10:25 pm - 2:40 pmONT-STT

12h 15m1 stop

$2,576Delta

Find Deal

Wed, Nov 26 - Sun, Nov 30

3:50 pm - 11:52 pmSTT-ONT

12h 02m2 stops

5:49 pm - 2:40 pmONT-STT

16h 51m2 stops

$3,070Delta

Find Deal

Wed, Nov 26 - Sat, Nov 29

3:50 pm - 11:52 pmSTT-ONT

12h 02m2 stops

5:49 pm - 2:40 pmONT-STT

16h 51m2 stops

$3,321Delta

Find Deal

Wed, Nov 26 - Sun, Nov 30

3:05 pm - 10:25 pmSTT-ONT

11h 20m1 stop

6:39 pm - 12:00 pmONT-STT

13h 21m2 stops

$7,909United Airlines

Find Deal

Sat, Dec 20 - Sun, Jan 4

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 6

STT3:35 pmSaint Thomas Island Cyril E King

10h 14m

1 stop

ONT9:49 pmOntario

Jan 8

ONT6:39 pmOntario

13h 21m

2 stops

STT12:00 pmSaint Thomas Island Cyril E King

$685

Find similar

United Airlines

Dec 20

STT3:05 pmSaint Thomas Island Cyril E King

11h 20m

1 stop

ONT10:25 pmOntario

Jan 4

ONT11:59 pmOntario

12h 19m

1 stop

STT4:18 pmSaint Thomas Island Cyril E King

$1,267

Find similar

United Airlines

Dec 20

STT3:05 pmSaint Thomas Island Cyril E King

11h 20m

1 stop

ONT10:25 pmOntario

Jan 4

ONT6:39 pmOntario

13h 21m

2 stops

STT12:00 pmSaint Thomas Island Cyril E King

$7,909

Find similar

Delta flights from Saint Thomas Island to Ontario

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

Delta

Nov 26

STT3:50 pmSaint Thomas Island Cyril E King

11h 14m

1 stop

ONT11:04 pmOntario

Nov 29

ONT10:25 pmOntario

12h 15m

1 stop

STT2:40 pmSaint Thomas Island Cyril E King

$2,088

Find similar

Delta

Nov 26

STT3:50 pmSaint Thomas Island Cyril E King

12h 02m

2 stops

ONT11:52 pmOntario

Nov 30

ONT10:25 pmOntario

12h 15m

1 stop

STT2:40 pmSaint Thomas Island Cyril E King

$2,576

Find similar

Delta

Nov 26

STT3:50 pmSaint Thomas Island Cyril E King

12h 02m

2 stops

ONT11:52 pmOntario

Nov 29

ONT5:49 pmOntario

16h 51m

2 stops

STT2:40 pmSaint Thomas Island Cyril E King

$3,070

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

Sat 12/6

3:35 pm-9:49 pm

1 stop10h 14m

Ontario

Thu 1/8

6:39 pm-12:00 pm

2 stops13h 21m

$685

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Sat 12/20

3:05 pm-10:25 pm

1 stop11h 20m

Ontario

Sun 1/4

11:59 pm-4:18 pm

1 stop12h 19m

$1,267

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Wed 11/26

3:50 pm-11:04 pm

1 stop11h 14m

Ontario

Sat 11/29

10:25 pm-2:40 pm

1 stop12h 15m

$2,088

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Wed 11/26

3:50 pm-11:52 pm

2 stops12h 02m

Ontario

Sun 11/30

10:25 pm-2:40 pm

1 stop12h 15m

$2,576

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Wed 11/26

3:50 pm-11:52 pm

2 stops12h 02m

Ontario

Sat 11/29

5:49 pm-2:40 pm

2 stops16h 51m

$3,070

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Wed 11/26

3:50 pm-11:52 pm

2 stops12h 02m

Ontario

Sun 11/30

5:49 pm-2:40 pm

2 stops16h 51m

$3,321

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Sat 12/20

3:05 pm-10:25 pm

1 stop11h 20m

Ontario

Sun 1/4

6:39 pm-12:00 pm

2 stops13h 21m

$7,909

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Tue 12/2

8:00 am-9:49 pm

2 stops17h 49m

$867

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Mon 2/23

2:00 pm-9:07 pm

1 stop11h 07m

$897

Saint Thomas IslandOntario

STT - ONT

STTONT

Saint Thomas Island Cyril E King

Mon 2/23

2:00 pm-11:53 pm

2 stops13h 53m

$1,145

Flights are sorted by cheapest round-trip flights first.

Sorted 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.

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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 14m 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.