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Santiago de los Caballeros

$377+ 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 5/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — STI
Jun 10 — Jun 171
Wed 6/10
Wed 6/17
1 adult, Economy
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Find cheap flights from Ontario to Santiago de los Caballeros with Cheapflights

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Cheap 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 May 11, 2026.

This American Airlines deal was found by Cheapflights users on 5/10. 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.
Thu 7/161:10 pm
ONT
-
STI
2 stops22h 34m
American Airlines
Thu 7/237:00 am
STI
-
ONT
2 stops18h 32m
American Airlines
Deal found 5/10$719
This JetBlue deal was found by Cheapflights users on 5/7. 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.
Tue 6/210:41 pm
ONT
-
STI
1 stop18h 03m
JetBlue
Sat 6/68:14 am
STI
-
ONT
1 stop15h 33m
JetBlue
Deal found 5/7$772
This American Airlines deal was found by Cheapflights users on 5/6. 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 5/2411:59 pm
ONT
-
STI
2 stops18h 14m
American Airlines
Wed 6/33:38 pm
STI
-
ONT
2 stops20h 53m
American Airlines
Deal found 5/6$780
This JetBlue deal was found by Cheapflights users on 5/10. 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 5/3010:41 pm
ONT
-
STI
1 stop17h 07m
JetBlue
Fri 6/58:14 am
STI
-
ONT
1 stop15h 33m
JetBlue
Deal found 5/10$782
This JetBlue deal was found by Cheapflights users on 5/6. 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.
Sun 5/2410:41 pm
ONT
-
STI
1 stop18h 03m
JetBlue
Wed 6/35:01 am
STI
-
ONT
1 stop18h 46m
JetBlue
Deal found 5/6$805
This JetBlue deal was found by Cheapflights users on 5/6. 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 9/269:10 pm
ONT
-
STI
1 stop10h 37m
JetBlue
Wed 9/306:30 am
STI
-
ONT
1 stop16h 43m
JetBlue
Deal found 5/6$823
This United Airlines deal was found by Cheapflights users on 5/7. 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 9/269:39 am
ONT
-
STI
2 stops26h 33m
United Airlines
Wed 9/306:00 am
STI
-
ONT
2 stops19h 26m
United Airlines
Deal found 5/7$835
This Priceline deal was found by Cheapflights users on 5/7. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/310:41 pm
ONT
-
STI
1 stop18h 03m
JetBlue
Sat 6/68:14 am
STI
-
ONT
1 stop15h 33m
JetBlue
Deal found 5/7$856
This Priceline deal was found by Cheapflights users on 5/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3010:41 pm
ONT
-
STI
1 stop20h 51m
JetBlue
Sat 6/136:00 am
STI
-
ONT
1 stop19h 01m
JetBlue
Deal found 5/9$879
This Priceline deal was found by Cheapflights users on 5/7. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/189:10 pm
ONT
-
STI
1 stop24h 49m
JetBlue
Fri 10/166:30 am
STI
-
ONT
1 stop18h 39m
JetBlue
Deal found 5/7$880

Find 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 May 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$719
(American Airlines)

One-way from

$377
(Justfly.com)

Popular in

December

Cheapest in

April

Average price

$654
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. 7% potential increase in price ($52 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
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 May 11, 2026.
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

Cheapest round-trip

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Tue 6/2

10:41 pm-7:44 pm

1 stop18h 03m

Santiago de los Caballeros

Sat 6/6

8:14 am-8:47 pm

1 stop15h 33m

$772

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Sun 5/24

11:59 pm-9:13 pm

2 stops18h 14m

Santiago de los Caballeros

Wed 6/3

3:38 pm-9:31 am

2 stops20h 53m

$780

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Sun 5/24

10:41 pm-7:44 pm

1 stop18h 03m

Santiago de los Caballeros

Wed 6/3

5:01 am-8:47 pm

1 stop18h 46m

$805
Quickest round-trip

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Sat 9/26

9:10 pm-10:47 am

1 stop10h 37m

Santiago de los Caballeros

Wed 9/30

6:30 am-8:13 pm

1 stop16h 43m

$833

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Sat 9/26

6:00 am-12:57 pm

2 stops27h 57m

Santiago de los Caballeros

Wed 9/30

6:00 am-10:26 pm

2 stops19h 26m

$835

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Wed 5/27

6:30 pm-10:52 pm

2 stops25h 22m

Santiago de los Caballeros

Tue 6/2

2:07 pm-12:47 pm

2 stops25h 40m

$895

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Sun 5/24

10:41 pm-6:46 pm

1 stop17h 05m

Santiago de los Caballeros

Sun 5/31

5:01 am-8:47 pm

1 stop18h 46m

$907
Cheapest one-way

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Sat 5/23

10:41 pm-6:46 pm

1 stop17h 05m

$377

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Tue 6/9

10:41 pm-7:44 pm

1 stop18h 03m

$379
Quickest one-way

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Sat 5/23

5:44 am-9:13 pm

2 stops12h 29m

$418

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/8

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

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 May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Santiago de los Caballeros flight deals on Cheapflights vs. FlightHub >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 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 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.

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 18h 03m. 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.

See more FAQs

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