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$337+ 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 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
STI — ONT
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap 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 December 12, 2025.

This American Airlines deal was found by Cheapflights users on 12/11. 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.
Fri 12/196:00 amSTI - ONT
2 stops21h 46mAmerican Airlines
Tue 1/612:57 pmONT - STI
2 stops22h 35mAmerican Airlines
Deal found 12/11$562

Find flight deals from Santiago de los Caballeros to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Santiago de los Caballeros (STI) to Ontario (ONT). 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 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$516
(United Airlines)

One-way from

$337
(United Airlines)

Popular in

October

Cheapest in

March

Average price

$674
Provider with most accurate pricing for Santiago de los Caballeros-Ontario flight deals.
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Provider most trusted by Cheapflights users for Santiago de los Caballeros-Ontario flights.
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From Santiago de los Caballeros to Ontario
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One-way flight from Santiago de los Caballeros to Ontario
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($94 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($53 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Santiago de los Caballeros to Ontario 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 12, 2025.
Use the filters below to find and compare flights from Santiago de los Caballeros to Ontario that are best for you.

Fly from

Santiago de los Caballeros

Fly to

Ontario

Route

Depart

Return

Price

Santiago de los CaballerosOntario

STI - ONT

STIONT

Santiago de los Caballeros

Fri 1/23

6:00 am-10:53 pm

2 stops20h 53m

Ontario

Mon 1/26

1:53 pm-2:53 pm

2 stops21h 00m

$516

Santiago de los CaballerosOntario

STI - ONT

STIONT

Santiago de los Caballeros

Sat 1/17

6:00 am-8:58 pm

2 stops18h 58m

Ontario

Sun 1/25

1:53 pm-2:53 pm

2 stops21h 00m

$567

Santiago de los CaballerosOntario

STI - ONT

STIONT

Santiago de los Caballeros

Wed 12/17

4:00 pm-12:38 pm

2 stops24h 38m

$337

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Compare providers for flights from Santiago de los Caballeros to Ontario

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 Santiago de los Caballeros to Ontario in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 Santiago de los Caballeros-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Santiago de los Caballeros-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Santiago de los Caballeros-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Santiago de los Caballeros-Ontario flights, Cheapflights users trust Expedia the most. Expedia 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 Santiago de los Caballeros-Ontario 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 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, February is the cheapest month in which you can book a flight from Santiago de los Caballeros to Ontario (average of $228). Flying from Santiago de los Caballeros to Ontario in April is currently the most expensive (average of $557). 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 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.

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

    Departing from Santiago de los Caballeros to Ontario will take you 20h 53m. Airlines will cover a distance of 3040 mi.

  • 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, February is the cheapest month in which you can book a flight from Santiago de los Caballeros to Ontario (average of $228). Flying from Santiago de los Caballeros to Ontario in April is currently the most expensive (average of $557). 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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