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Santiago de los Caballeros

$304+ 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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — STI
Dec 31 — Jan 71
Wed 12/31
Wed 1/7
1 adult, Economy
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Find cheap flights from Ontario to Santiago de los Caballeros with Cheapflights

1. Tell us where you want to go

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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 December 1, 2025.

This American Airlines deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/64:47 pmONT - STI
2 stops23h 46mAmerican Airlines
Fri 12/124:32 pmSTI - ONT
2 stops20h 21mAmerican Airlines
Deal found 11/30$621
This American Airlines deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/282:42 pmONT - STI
2 stops19h 42mAmerican Airlines
Thu 1/13:24 pmSTI - ONT
2 stops21h 24mAmerican Airlines
Deal found 11/30$641
This United Airlines deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:00 amONT - STI
2 stops13h 51mUnited Airlines
Fri 12/126:00 amSTI - ONT
3 stops20h 49mUnited Airlines
Deal found 11/30$833
This United Airlines deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/111:34 pmONT - STI
2 stops18h 12mUnited Airlines
Tue 12/166:00 amSTI - ONT
3 stops20h 49mUnited Airlines
Deal found 11/30$970
This Delta deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/281:15 pmONT - STI
2 stops19h 43mDelta
Wed 12/313:30 amSTI - ONT
2 stops23h 03mDelta
Deal found 11/30$1,631

Cheap flight deals from Ontario to Santiago de los Caballeros

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Santiago de los Caballeros (STI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 1, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$488
(American Airlines)

One-way from

$304
(United Airlines)

Popular in

December

Cheapest in

May

Average price

$992
Provider with most accurate pricing for Ontario-Santiago de los Caballeros flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Santiago de los Caballeros flights.
Search Deals
From Ontario to Santiago de los Caballeros
Search Deals
One-way flight from Ontario to Santiago de los Caballeros
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($163 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Santiago de los Caballeros that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 1, 2025.
Use the filters below to find and compare flights from Ontario to Santiago de los Caballeros that are best for you.

Fly from

Ontario

Fly to

Santiago de los Caballeros

Route

Depart

Return

Price

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Mon 1/26

11:59 pm-9:46 pm

2 stops17h 47m

Santiago de los Caballeros

Thu 1/29

4:33 pm-12:03 pm

2 stops23h 30m

$488

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Mon 1/26

1:53 pm-11:46 am

2 stops17h 53m

Santiago de los Caballeros

Thu 1/29

4:00 pm-11:18 am

3 stops23h 18m

$520

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Sun 12/28

2:42 pm-2:24 pm

2 stops19h 42m

Santiago de los Caballeros

Thu 1/1

3:24 pm-8:48 am

2 stops21h 24m

$641

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Thu 12/11

1:34 pm-11:46 am

2 stops18h 12m

Santiago de los Caballeros

Tue 12/16

6:00 am-10:49 pm

3 stops20h 49m

$970

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Sun 12/28

1:15 pm-12:58 pm

2 stops19h 43m

Santiago de los Caballeros

Wed 12/31

3:30 am-10:33 pm

2 stops23h 03m

$1,631

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Mon 12/15

1:50 pm-2:53 pm

2 stops21h 03m

$772

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/1

Compare providers for flights from Ontario to Santiago de los Caballeros

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Santiago de los Caballeros in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Santiago de los Caballeros flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Santiago de los Caballeros flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Santiago de los Caballeros flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Santiago de los Caballeros flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Santiago de los Caballeros flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 $270). Flying from Ontario to Santiago de los Caballeros in July is currently the most expensive (average of $490). 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

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.

  • How long is the flight from Ontario to Santiago de los Caballeros?

    Departing from Ontario to Santiago de los Caballeros will take you 17h 47m. The distance between Ontario and Santiago de los Caballeros is about 3040 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $270). Flying from Ontario to Santiago de los Caballeros in July is currently the most expensive (average of $490). 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

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