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$574+ Cheap flights from Santiago de los Caballeros (STI) to Ontario (ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
STI — ONT
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
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 January 26, 2026.

This United Airlines deal was found by Cheapflights users on 1/26. 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.
Tue 4/212:07 pm
STI
-
ONT
2 stops25h 31m
United Airlines
Sat 4/251:27 pm
ONT
-
STI
2 stops22h 45m
United Airlines
Deal found 1/26$574
This United Airlines deal was found by Cheapflights users on 1/25. 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 2/266:00 am
STI
-
ONT
2 stops18h 50m
United Airlines
Mon 3/21:45 pm
ONT
-
STI
2 stops18h 01m
United Airlines
Deal found 1/25$850
This Trip.com deal was found by Cheapflights users on 1/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/269:10 am
STI
-
ONT
1 stop15h 59m
JetBlue
Fri 7/2411:25 pm
ONT
-
STI
1 stop16h 01m
JetBlue
Deal found 1/25$1,024
This JetBlue deal was found by Cheapflights users on 1/26. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/249:10 am
STI
-
ONT
1 stop15h 59m
JetBlue
Thu 7/3011:25 pm
ONT
-
STI
1 stop13h 31m
JetBlue
Deal found 1/26$1,128
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Fri 7/242:07 pm
STI
-
ONT
2 stops25h 26m
United Airlines
Thu 7/306:30 pm
ONT
-
STI
2 stops15h 27m
United Airlines
Deal found 1/26$1,172
This JetBlue deal was found by Cheapflights users on 1/26. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/259:10 am
STI
-
ONT
1 stop15h 59m
JetBlue
Thu 7/3011:25 pm
ONT
-
STI
1 stop16h 01m
JetBlue
Deal found 1/26$1,313

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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$574
(United Airlines)

Popular in

October

Cheapest in

March

Average price

$527
Provider with most accurate pricing for Santiago de los Caballeros-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Santiago de los Caballeros-Ontario flights.
Search Deals
From Santiago de los Caballeros to Ontario
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($106 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($54 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 26, 2026.
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

Tue 4/21

2:07 pm-12:38 pm

2 stops25h 31m

Ontario

Sat 4/25

1:27 pm-3:12 pm

2 stops22h 45m

$574

Santiago de los CaballerosOntario

STI - ONT

STIONT

Santiago de los Caballeros

Thu 2/26

6:00 am-10:57 pm

2 stops20h 57m

Ontario

Mon 3/2

6:37 pm-2:53 pm

2 stops16h 16m

$850

Santiago de los CaballerosOntario

STI - ONT

STIONT

Santiago de los Caballeros

Fri 6/26

9:10 am-10:09 pm

1 stop15h 59m

Ontario

Fri 7/24

11:25 pm-6:26 pm

1 stop16h 01m

$1,024

Santiago de los CaballerosOntario

STI - ONT

STIONT

Santiago de los Caballeros

Fri 7/24

9:10 am-10:09 pm

1 stop15h 59m

Ontario

Thu 7/30

11:25 pm-3:56 pm

1 stop13h 31m

$1,128

Santiago de los CaballerosOntario

STI - ONT

STIONT

Santiago de los Caballeros

Fri 7/24

9:10 am-10:09 pm

1 stop15h 59m

Ontario

Fri 7/31

11:25 pm-3:56 pm

1 stop13h 31m

$1,128

Santiago de los CaballerosOntario

STI - ONT

STIONT

Santiago de los Caballeros

Sat 7/25

9:10 am-10:09 pm

1 stop15h 59m

Ontario

Thu 7/30

11:25 pm-3:56 pm

1 stop13h 31m

$1,128

Santiago de los CaballerosOntario

STI - ONT

STIONT

Santiago de los Caballeros

Fri 7/24

2:07 pm-12:33 pm

2 stops25h 26m

Ontario

Thu 7/30

6:30 pm-12:57 pm

2 stops15h 27m

$1,172

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

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 January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust 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 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 FlightHub the most. FlightHub 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 $221). Flying from Santiago de los Caballeros to Ontario in August is currently the most expensive (average of $492). 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 15h 59m. Airlines will cover a distance of 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 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 $221). Flying from Santiago de los Caballeros to Ontario in August is currently the most expensive (average of $492). 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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