HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Santiago de los Caballeros

$262+ 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — STI
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Santiago de los Caballeros 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 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 January 15, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$491
(JetBlue)

One-way from

$262
(United Airlines)

Popular in

December

Cheapest in

May

Average price

$666
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. 8% potential increase in price ($54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 15, 2026.

This American Airlines deal was found by Cheapflights users on 1/13. 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 1/179:59 am
ONT
-
STI
2 stops25h 33m
American Airlines
Thu 1/226:00 am
STI
-
ONT
2 stops16h 45m
American Airlines
Deal found 1/13$642
This United Airlines deal was found by Cheapflights users on 1/13. 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 2/211:53 pm
ONT
-
STI
2 stops17h 53m
United Airlines
Wed 2/254:00 pm
STI
-
ONT
2 stops24h 43m
United Airlines
Deal found 1/13$657
This United Airlines deal was found by Cheapflights users on 1/13. 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.
Sun 1/255:05 am
ONT
-
STI
2 stops14h 46m
United Airlines
Wed 1/286:00 am
STI
-
ONT
2 stops20h 53m
United Airlines
Deal found 1/13$822
This United Airlines deal was found by Cheapflights users on 1/13. 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 1/171:24 pm
ONT
-
STI
2 stops18h 22m
United Airlines
Thu 1/224:00 pm
STI
-
ONT
3 stops23h 18m
United Airlines
Deal found 1/13$913
This United Airlines deal was found by Cheapflights users on 1/13. 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 3/191:50 pm
ONT
-
STI
2 stops17h 56m
United Airlines
Tue 3/2411:52 am
STI
-
ONT
2 stops27h 56m
United Airlines
Deal found 1/13$951

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 January 15, 2026.
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

Sat 2/21

1:53 pm-11:46 am

2 stops17h 53m

Santiago de los Caballeros

Wed 2/25

4:00 pm-12:43 pm

2 stops24h 43m

$657

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Sun 1/25

1:53 pm-2:53 pm

2 stops21h 00m

Santiago de los Caballeros

Wed 1/28

6:00 am-10:53 pm

2 stops20h 53m

$822

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Sat 1/24

5:05 am-11:51 pm

2 stops14h 46m

Santiago de los Caballeros

Wed 1/28

6:00 am-10:53 pm

2 stops20h 53m

$822

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Thu 3/19

1:50 pm-10:46 am

2 stops17h 56m

Santiago de los Caballeros

Tue 3/24

11:52 am-12:48 pm

2 stops27h 56m

$951

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Sat 2/7

1:53 pm-2:53 pm

2 stops21h 00m

$262

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Wed 2/18

1:45 pm-11:46 am

2 stops18h 01m

$320

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Sun 1/18

5:05 am-11:46 am

2 stops26h 41m

$410

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

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 January.
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 $224). 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 53m. The distance between Ontario and Santiago de los Caballeros is about 3040 mi.

  • 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 $224). 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

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 Ontario to Santiago de los Caballeros

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Punta Cana flights
San Francisco to Punta Cana flights
Ontario to Punta Cana flights
Los Angeles to Santo Domingo flights
Los Angeles to Puerto Plata flights
San Diego to Punta Cana flights
San Francisco to Santo Domingo flights
San Diego to Santo Domingo flights
Las Vegas to Punta Cana flights
Burbank to Punta Cana flights
Las Vegas to Santo Domingo flights
Ontario to Santo Domingo flights
Sacramento to Punta Cana flights
Burbank to Santo Domingo flights
Santa Ana to Punta Cana flights
San Diego to Puerto Plata flights
San Francisco to Puerto Plata flights
San Francisco to Santiago de los Caballeros flights
Las Vegas to Puerto Plata flights
Ontario to Puerto Plata flights
Los Angeles to Santiago de los Caballeros flights
San Jose to Punta Cana flights
San Jose to Santo Domingo flights
Fresno to Punta Cana flights
Oakland to Punta Cana flights
Sacramento to Puerto Plata flights
Reno to Punta Cana flights
San Diego to Santiago de los Caballeros flights
Sacramento to Santo Domingo flights
San Francisco to La Romana flights
Palm Springs to Punta Cana flights
Los Angeles to La Romana flights
Reno to Santo Domingo flights
Las Vegas to Santiago de los Caballeros flights
Long Beach to Punta Cana flights
Santa Ana to Santo Domingo flights
Fresno to Santiago de los Caballeros flights
Fresno to Santo Domingo flights
San Jose to Santiago de los Caballeros flights
Los Angeles to Nagua flights
Santa Ana to Santiago de los Caballeros flights
Sacramento to Santiago de los Caballeros flights
Long Beach to Santiago de los Caballeros flights
San Jose to Puerto Plata flights
Long Beach to Santo Domingo flights
Reno to Santiago de los Caballeros flights
Oakland to Santo Domingo flights
Santa Ana to Puerto Plata 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.