In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

What is the cheapest time of day to fly from STI to ONT?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Santiago de los Caballeros to Ontario as you normally would.

How can I find direct flights from Santiago de los Caballeros to Ontario?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Santiago de los Caballeros to Ontario.

Can I find deals for business class flights from Santiago de los Caballeros to Ontario?

Yes. Cheapflights offers flight deals from Santiago de los Caballeros to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$324+ Flights from Santiago de los Caballeros to Ontario

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Santiago de los Caballeros to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Santiago de los Caballeros to Ontario

Round-trip from	$1,233 (United Airlines)
One-way from	$324 (United Airlines)

From Santiago de los Caballeros to Ontario

Search Deals

One-way flight from Santiago de los Caballeros to Ontario

Search Deals

Find flight deals from Santiago de los Caballeros to Ontario

Cheapest flights from Santiago de los Caballeros to Ontario
Explore the most affordable flight options available from Santiago de los Caballeros to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Sat 8/21:13 pmSTI - ONT

1 stop11h 55mJetBlue

Fri 9/510:56 pmONT - STI

1 stop12h 17mJetBlue

Deal found 7/29

$1,192

Sat 12/206:00 amSTI - ONT

2 stops18h 17mUnited Airlines

Sun 1/410:42 amONT - STI

2 stops24h 11mUnited Airlines

Deal found 7/26

$1,233

Best flights from Santiago de los Caballeros to Ontario
Discover carefully curated flight deals from Santiago de los Caballeros to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2025.

Sat 12/206:00 amSTI - ONT

2 stops18h 17mUnited Airlines

Sun 1/410:42 amONT - STI

2 stops24h 11mUnited Airlines

Deal found 7/26

$1,233

Last-minute flights from Santiago de los Caballeros to Ontario
Discover last-minute flight deals from Santiago de los Caballeros to Ontario. Data last updated July 29, 2025 and is based on user searches.

Sat 8/21:13 pmSTI - ONT

1 stop11h 55mJetBlue

Fri 9/510:56 pmONT - STI

1 stop12h 17mJetBlue

Deal found 7/29

$1,192

One-way flights from Santiago de los Caballeros to Ontario
Search for one-way flight options from Santiago de los Caballeros to Ontario. Find affordable one-way fares based on user searches. Data last updated July 29, 2025.

Mon 11/106:00 amSTI - ONT

2 stops16h 36mUnited Airlines

Deal found 7/28

$324

Sun 9/2810:10 amSTI - ONT

1 stop14h 19mJetBlue

Deal found 7/28

$417

Cheapflights Fare Finder

Use the filters below to find and compare flights from Santiago de los Caballeros to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Santiago de los CaballerosOntario

STI - ONT

STIONT

Santiago de los Caballeros

Sat 12/20

6:00 am-8:17 pm

2 stops18h 17m

Ontario

Sun 1/4

10:42 am-2:53 pm

2 stops24h 11m

$1,233

Santiago de los CaballerosOntario

STI - ONT

STIONT

Santiago de los Caballeros

Mon 11/10

6:00 am-6:36 pm

2 stops16h 36m

$324

Santiago de los CaballerosOntario

STI - ONT

STIONT

Santiago de los Caballeros

Sun 9/28

10:10 am-9:29 pm

1 stop14h 19m

$417

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Santiago de los Caballeros to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Santiago de los Caballeros with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Santiago de los Caballeros to Ontario

What is the cheapest month to book a flight from Santiago de los Caballeros to Ontario?

Currently, August is the cheapest month in which you can book a flight from Santiago de los Caballeros to Ontario (average of $246). Flying from Santiago de los Caballeros to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Ontario

Read through reviews of airlines operating flights from Santiago de los Caballeros to Ontario, such as United Airlines and JetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,896 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

United Airlines

7.4

Good

8,896 reviews

United Airlines

7.4

Good

8,896 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Apr 2025

TPE - SFO

JetBlue

7.3

Good

2,913 reviews

United Airlines

7.4

Good

8,896 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Apr 2025

TPE - SFO

Related info for your journey

Can I find deals for flights from Santiago de los Caballeros to Ontario that include hotel bookings?
Yes. In addition to deals on Santiago de los Caballeros to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Santiago de los Caballeros to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Santiago de los Caballeros to Ontario.
Can I find deals for business class flights from Santiago de los Caballeros to Ontario?
Yes. Cheapflights offers flight deals from Santiago de los Caballeros to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Santiago de los Caballeros to Ontario?
Currently, August is the cheapest month in which you can book a flight from Santiago de los Caballeros to Ontario (average of $246). Flying from Santiago de los Caballeros to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Santiago de los Caballeros to Ontario

Complete your trip

Ontario car rentals

Los Angeles Airport car rentals

Ontario Airport car rentals

Burbank Bob Hope Airport car rentals

Long Beach Municipal Airport car rentals

Los Angeles car rentals

San Francisco car rentals

San Diego car rentals

Fresno car rentals

San Jose car rentals

Sacramento car rentals

Burbank car rentals

Other flights to Ontario

Other flights from Santiago de los Caballeros

Santiago de los Caballeros to Newark flights

Santiago de los Caballeros to Fort Lauderdale flights

Santiago de los Caballeros to John F Kennedy Intl flights

Santiago de los Caballeros to Orlando flights

Santiago de los Caballeros to Miami flights

Santiago de los Caballeros to Boston flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$324+ Cheap flights from Santiago de los Caballeros (STI) to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Santiago de los Caballeros to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Santiago de los Caballeros to Ontario

Round-trip from

One-way from

Find flight deals from Santiago de los Caballeros to Ontario

Cheapest flights from Santiago de los Caballeros to OntarioExplore the most affordable flight options available from Santiago de los Caballeros to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Explore the most affordable flight options available from Santiago de los Caballeros to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Santiago de los Caballeros to Ontario that are best for you.

Best time to book a flight from Santiago de los Caballeros to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Santiago de los Caballeros with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Santiago de los Caballeros to Ontario

What is the cheapest month to book a flight from Santiago de los Caballeros to Ontario?

Reviews of airlines servicing Ontario

Read through reviews of airlines operating flights from Santiago de los Caballeros to Ontario, such as United Airlines and JetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Santiago de los Caballeros to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Santiago de los Caballeros to Ontario that include hotel bookings?

How can I find direct flights from Santiago de los Caballeros to Ontario?

Can I find deals for business class flights from Santiago de los Caballeros to Ontario?

What is the cheapest month to book a flight from Santiago de los Caballeros to Ontario?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Santiago de los Caballeros to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Santiago de los Caballeros to Ontario
Explore the most affordable flight options available from Santiago de los Caballeros to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.