In terms of precipitation, rainfall in Santiago de los Caballeros ranges from 3.0 - 11.6 inches per month. December is typically the wettest month, when rainfall can reach 11.6 in. July is typically the driest time to visit Santiago de los Caballeros when rainfall is around 3.0 in.

If weather is an important factor for your trip to Santiago de los Caballeros, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 73.4 F).

What is the cheapest month to fly from Ontario to Santiago de los Caballeros?

Our data shows that October tends to be the cheapest month to fly to Santiago de los Caballeros from Ontario. Users have commonly found prices around $616 for the month, but tickets can be as low as $382. Due to multiple factors, prepare for potentially higher prices in December.

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

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

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

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

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

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

$232+ Cheap Flights from Ontario to Santiago de los Caballeros

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Cheap flight deals from Ontario to Santiago de los Caballeros

Round-trip from	$495 (Priceline)
One-way from	$232 (American Airlines)
Popular in	December
Cheapest in	October
Average price	$674

From Ontario to Santiago de los Caballeros

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One-way flight from Ontario to Santiago de los Caballeros

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Highest demand for flights based on searches. 24% potential increase in price ($198 potential increase over avg. RT price).

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Cheapest flight prices on average. 7% potential price decrease ($42 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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Find flight deals from Ontario to Santiago de los Caballeros

Cheapest flights from Ontario to Santiago de los Caballeros
Explore the most affordable flight options available from Ontario to Santiago de los Caballeros. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Tue 9/1610:56 pmONT - STI

1 stop12h 24mJetBlue

Fri 9/261:12 pmSTI - ONT

1 stop11h 17mJetBlue

Deal found 8/14

$495

Fri 9/510:56 pmONT - STI

1 stop12h 17mJetBlue

Thu 9/259:55 amSTI - ONT

1 stop14h 34mJetBlue

Deal found 8/13

$530

Sun 10/510:56 pmONT - STI

1 stop12h 17mJetBlue

Sat 10/2510:54 amSTI - ONT

1 stop13h 35mJetBlue

Deal found 8/14

$538

Mon 11/241:40 pmONT - STI

2 stops18h 06mUnited Airlines

Sat 12/66:00 amSTI - ONT

2 stops18h 42mUnited Airlines

Deal found 8/13

$612

Fri 9/2610:56 pmONT - STI

1 stop12h 17mJetBlue

Thu 10/912:48 pmSTI - ONT

1 stop11h 41mJetBlue

Deal found 8/13

$623

Fri 9/56:04 amONT - STI

2 stops16h 42mUnited Airlines

Thu 9/256:00 amSTI - ONT

2 stops18h 24mUnited Airlines

Deal found 8/13

$644

Sun 9/2810:56 pmONT - STI

1 stop12h 17mJetBlue

Sun 10/59:55 amSTI - ONT

1 stop14h 34mJetBlue

Deal found 8/14

$671

Fri 9/196:38 pmONT - STI

2 stops15h 19mUnited Airlines

Mon 9/292:07 pmSTI - ONT

2 stops25h 06mUnited Airlines

Deal found 8/14

$674

Mon 10/1310:56 pmONT - STI

1 stop12h 17mJetBlue

Mon 10/2012:48 pmSTI - ONT

1 stop11h 41mJetBlue

Deal found 8/14

$695

Fri 9/1910:56 pmONT - STI

1 stop12h 24mJetBlue

Mon 9/291:12 pmSTI - ONT

1 stop11h 17mJetBlue

Deal found 8/14

$709

Best flights from Ontario to Santiago de los Caballeros
Discover carefully curated flight deals from Ontario to Santiago de los Caballeros that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2025.

Tue 9/1610:56 pmONT - STI

1 stop12h 24mJetBlue

Fri 9/269:55 amSTI - ONT

1 stop14h 34mJetBlue

Deal found 8/13

$495

Mon 11/241:40 pmONT - STI

2 stops18h 06mUnited Airlines

Sat 12/66:00 amSTI - ONT

2 stops18h 42mUnited Airlines

Deal found 8/13

$612

Fri 9/510:56 pmONT - STI

1 stop12h 17mJetBlue

Thu 9/259:55 amSTI - ONT

1 stop14h 34mJetBlue

Deal found 8/13

$530

Sun 10/510:56 pmONT - STI

1 stop12h 17mJetBlue

Sat 10/2510:54 amSTI - ONT

1 stop13h 35mJetBlue

Deal found 8/14

$538

Fri 9/56:04 amONT - STI

2 stops16h 42mUnited Airlines

Thu 9/256:00 amSTI - ONT

2 stops18h 24mUnited Airlines

Deal found 8/13

$644

Fri 9/196:38 pmONT - STI

2 stops15h 19mUnited Airlines

Mon 9/292:07 pmSTI - ONT

2 stops25h 06mUnited Airlines

Deal found 8/14

$674

Fri 9/2610:56 pmONT - STI

1 stop12h 17mJetBlue

Thu 10/912:48 pmSTI - ONT

1 stop11h 41mJetBlue

Deal found 8/13

$623

Sun 10/51:15 pmONT - STI

2 stops20h 42mUnited Airlines

Sat 10/256:00 amSTI - ONT

2 stops19h 52mUnited Airlines

Deal found 8/14

$674

Sun 9/2810:56 pmONT - STI

1 stop12h 17mJetBlue

Sun 10/59:55 amSTI - ONT

1 stop14h 34mJetBlue

Deal found 8/14

$671

Mon 10/1310:56 pmONT - STI

1 stop12h 17mJetBlue

Mon 10/2012:48 pmSTI - ONT

1 stop11h 41mJetBlue

Deal found 8/14

$695

Last-minute flights from Ontario to Santiago de los Caballeros
Discover last-minute flight deals from Ontario to Santiago de los Caballeros. Data last updated August 14, 2025 and is based on user searches.

Sat 8/165:05 amONT - STI

2 stops17h 41mUnited Airlines

Mon 8/182:07 pmSTI - ONT

2 stops25h 06mUnited Airlines

Deal found 8/13

$1,209

Fri 9/510:56 pmONT - STI

1 stop12h 17mJetBlue

Thu 9/259:55 amSTI - ONT

1 stop14h 34mJetBlue

Deal found 8/13

$530

Fri 9/56:04 amONT - STI

2 stops16h 42mUnited Airlines

Thu 9/256:00 amSTI - ONT

2 stops18h 24mUnited Airlines

Deal found 8/13

$644

Tue 9/1610:56 pmONT - STI

1 stop12h 24mJetBlue

Fri 9/261:12 pmSTI - ONT

1 stop11h 17mJetBlue

Deal found 8/14

$495

Fri 9/196:38 pmONT - STI

2 stops15h 19mUnited Airlines

Mon 9/292:07 pmSTI - ONT

2 stops25h 06mUnited Airlines

Deal found 8/14

$674

Fri 9/1910:56 pmONT - STI

1 stop12h 24mJetBlue

Mon 9/291:12 pmSTI - ONT

1 stop11h 17mJetBlue

Deal found 8/14

$709

Fri 9/2610:56 pmONT - STI

1 stop12h 17mJetBlue

Thu 10/912:48 pmSTI - ONT

1 stop11h 41mJetBlue

Deal found 8/13

$623

Fri 9/2610:35 pmONT - STI

2 stops10h 52mAmerican Airlines

Thu 10/91:14 pmSTI - ONT

2 stops12h 08mAmerican Airlines

Deal found 8/13

$750

Sun 9/2810:56 pmONT - STI

1 stop12h 17mJetBlue

Sun 10/59:55 amSTI - ONT

1 stop14h 34mJetBlue

Deal found 8/14

$671

Sun 9/286:00 amONT - STI

2 stops16h 46mUnited Airlines

Sun 10/56:00 amSTI - ONT

2 stops17h 24mUnited Airlines

Deal found 8/14

$940

One-way flights from Ontario to Santiago de los Caballeros
Search for one-way flight options from Ontario to Santiago de los Caballeros. Find affordable one-way fares based on user searches. Data last updated August 14, 2025.

Wed 9/32:54 pmONT - STI

2 stops18h 33mAmerican Airlines

Deal found 8/13

$232

Wed 12/36:30 amONT - STI

3 stops30h 36mMultiple Airlines

Deal found 8/13

$270

Wed 9/310:56 pmONT - STI

1 stop16h 07mJetBlue

Deal found 8/13

$307

Wed 8/207:05 amONT - STI

2 stops14h 42mDelta

Deal found 8/14

$316

Wed 8/206:04 amONT - STI

2 stops16h 42mUnited Airlines

Deal found 8/14

$371

Wed 8/2011:59 pmONT - STI

1 stop18h 14mJetBlue

Deal found 8/14

$564

Sun 9/75:10 amONT - STI

2 stops17h 36mUnited Airlines

Deal found 8/14

$673

Thu 12/185:40 amONT - STI

2 stops14h 11mUnited Airlines

Deal found 8/13

$1,049

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Tue 9/16

10:56 pm-2:20 pm

1 stop12h 24m

Santiago de los Caballeros

Fri 9/26

9:55 am-9:29 pm

1 stop14h 34m

$495

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Fri 9/5

10:56 pm-2:13 pm

1 stop12h 17m

Santiago de los Caballeros

Thu 9/25

9:55 am-9:29 pm

1 stop14h 34m

$530

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Sun 10/5

10:56 pm-2:13 pm

1 stop12h 17m

Santiago de los Caballeros

Sat 10/25

10:54 am-9:29 pm

1 stop13h 35m

$538

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Mon 11/24

1:40 pm-11:46 am

2 stops18h 06m

Santiago de los Caballeros

Sat 12/6

6:00 am-8:42 pm

2 stops18h 42m

$612

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Fri 9/26

10:56 pm-2:13 pm

1 stop12h 17m

Santiago de los Caballeros

Thu 10/9

12:48 pm-9:29 pm

1 stop11h 41m

$623

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Fri 9/5

6:04 am-1:46 am

2 stops16h 42m

Santiago de los Caballeros

Thu 9/25

6:00 am-9:24 pm

2 stops18h 24m

$644

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Sun 9/28

10:56 pm-2:13 pm

1 stop12h 17m

Santiago de los Caballeros

Sun 10/5

9:55 am-9:29 pm

1 stop14h 34m

$671

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Fri 9/19

6:38 pm-12:57 pm

2 stops15h 19m

Santiago de los Caballeros

Mon 9/29

2:07 pm-12:13 pm

2 stops25h 06m

$674

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Sun 10/5

1:15 pm-12:57 pm

2 stops20h 42m

Santiago de los Caballeros

Sat 10/25

6:00 am-10:52 pm

2 stops19h 52m

$674

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Mon 10/13

10:56 pm-2:13 pm

1 stop12h 17m

Santiago de los Caballeros

Mon 10/20

12:48 pm-9:29 pm

1 stop11h 41m

$695

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 18 results

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

Have a flexible travel schedule? Discover the best time to fly to Santiago de los Caballeros from Ontario 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 Ontario to Santiago de los Caballeros

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

Currently, May is the cheapest month in which you can book a flight from Ontario to Santiago de los Caballeros (average of $347). Flying from Ontario to Santiago de los Caballeros in July is currently the most expensive (average of $601). 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.

Related info for your journey

Can I find deals for flights from Ontario to Santiago de los Caballeros that include hotel bookings?
Yes. In addition to deals on Ontario to Santiago de los Caballeros flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Santiago de los Caballeros?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Santiago de los Caballeros.
Can I find deals for business class flights from Ontario to Santiago de los Caballeros?
Yes. Cheapflights offers flight deals from Ontario to Santiago de los Caballeros 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 Ontario to Santiago de los Caballeros?
Currently, May is the cheapest month in which you can book a flight from Ontario to Santiago de los Caballeros (average of $347). Flying from Ontario to Santiago de los Caballeros in July is currently the most expensive (average of $601). 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.

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$232+ Cheap flights from Ontario (ONT) to Santiago de los Caballeros (STI)

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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.

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

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Santiago de los Caballeros

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Santiago de los Caballeros

Cheapest flights from Ontario to Santiago de los CaballerosExplore the most affordable flight options available from Ontario to Santiago de los Caballeros. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Explore the most affordable flight options available from Ontario to Santiago de los Caballeros. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

Cheapflights Fare Finder

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

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

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

Cheapflights Insights

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

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

Related info for your journey

Find useful and relevant information for your journey from Ontario to Santiago de los Caballeros. 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 Ontario to Santiago de los Caballeros that include hotel bookings?

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

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

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

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Alternative routes for Ontario to Santiago de los Caballeros

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Cheapest flights from Ontario to Santiago de los Caballeros
Explore the most affordable flight options available from Ontario to Santiago de los Caballeros. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.