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Cheap flights from Montreal to Santiago de los Caballeros from C$ 318

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 22/2. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — STI
6 Jan — 13 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Montreal to Santiago de los Caballeros

Enter your travel dates to find the best prices.

Cheapest flights from Montreal to Santiago de los Caballeros
Explore the most affordable flight options available from Montreal to Santiago de los Caballeros. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 December 2025.

Sun 14/125:25 p.m.YUL - STI
2 stops32h 17mMultiple Airlines
Sun 18/14:40 p.m.STI - YUL
1 stop24h 42mMultiple Airlines
Deal found 6/12C$ 877
Tue 9/126:00 a.m.YUL - STI
2 stops16h 51mUnited Airlines
Sun 14/126:00 a.m.STI - YUL
2 stops14h 48mUnited Airlines
Deal found 6/12C$ 938
Tue 9/122:29 p.m.YUL - STI
2 stops24h 03mAmerican Airlines
Sun 14/124:32 p.m.STI - YUL
2 stops20h 48mAmerican Airlines
Deal found 6/12C$ 952
Tue 9/126:45 a.m.YUL - STI
2 stops18h 57mMultiple Airlines
Sat 13/123:43 a.m.STI - YUL
1 stop13h 40mMultiple Airlines
Deal found 6/12C$ 977
Wed 31/1211:59 a.m.YUL - STI
1 stop11h 35mDelta
Thu 8/19:59 p.m.STI - YUL
2 stops16h 43mDelta
Deal found 7/12C$ 1,144
Wed 31/1211:59 a.m.YUL - STI
1 stop13h 52mDelta
Tue 6/19:59 p.m.STI - YUL
2 stops16h 43mDelta
Deal found 7/12C$ 1,210
Wed 31/1211:59 a.m.YUL - STI
1 stop13h 52mDelta
Wed 7/19:59 p.m.STI - YUL
2 stops16h 43mDelta
Deal found 7/12C$ 1,211

Find flight deals from Montreal to Santiago de los Caballeros

Discover tips and strategies to find the most affordable flight options for your journey from Montreal (YMQ) 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 7 December 2025.

Round-trip from

C$ 651

One-way from

C$ 318

Popular in

December

Cheapest in

January

Average price

C$ 2,623
American Airlines
  • American Airlines
  • 18/1-10/2
  • 3 total stops
  • 25h 16m total
  • Montreal to Santiago de los Caballeros
Search Deals
22/2
  • 22/2
  • 2 total stops
  • 21h 10m total
  • Montreal to Santiago de los Caballeros
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (C$ 312 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 17% potential price decrease (C$ 205 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 Montreal 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 629,999 searches. Data last updated 7 December 2025.
Use the filters below to find and compare flights from Montreal to Santiago de los Caballeros that are best for you.

Fly from

Montreal

Fly to

Santiago de los Caballeros

Route

Depart

Return

Price

MontrealSantiago de los Caballeros

YUL - STI

YULSTI

Montreal Pierre Elliott Trudeau Intl

Tue 27/1

3:00 p.m.-11:51 p.m.

1 stop7h 51m

Santiago de los Caballeros

Fri 30/1

6:00 a.m.-1:28 p.m.

1 stop8h 28m

C$ 662

MontrealSantiago de los Caballeros

YUL - STI

YULSTI

Montreal Pierre Elliott Trudeau Intl

Mon 23/2

6:00 a.m.-11:51 p.m.

2 stops16h 51m

Santiago de los Caballeros

Mon 23/3

3:00 p.m.-2:00 p.m.

2 stops23h 00m

C$ 706

MontrealSantiago de los Caballeros

YUL - STI

YULSTI

Montreal Pierre Elliott Trudeau Intl

Mon 23/2

7:00 a.m.-2:53 p.m.

1 stop6h 53m

Santiago de los Caballeros

Sun 22/3

5:00 a.m.-1:28 p.m.

1 stop8h 28m

C$ 738

MontrealSantiago de los Caballeros

YUL - STI

YULSTI

Montreal Pierre Elliott Trudeau Intl

Tue 13/1

7:00 a.m.-3:50 p.m.

1 stop7h 50m

Santiago de los Caballeros

Tue 28/4

3:35 p.m.-11:15 p.m.

1 stop7h 40m

C$ 761

MontrealSantiago de los Caballeros

YUL - STI

YULSTI

Montreal Pierre Elliott Trudeau Intl

Thu 15/1

7:00 a.m.-9:46 p.m.

2 stops13h 46m

Santiago de los Caballeros

Sun 18/1

4:33 p.m.-10:44 p.m.

2 stops31h 11m

C$ 787

MontrealSantiago de los Caballeros

YUL - STI

YULSTI

Montreal Pierre Elliott Trudeau Intl

Thu 15/1

6:45 a.m.-3:33 p.m.

1 stop7h 48m

Santiago de los Caballeros

Sun 18/1

4:40 p.m.-12:43 a.m.

2 stops33h 03m

C$ 815

MontrealSantiago de los Caballeros

YUL - STI

YULSTI

Montreal Pierre Elliott Trudeau Intl

Mon 23/2

5:25 p.m.-3:35 p.m.

2 stops21h 10m

C$ 318

MontrealSantiago de los Caballeros

YUL - STI

YULSTI

Montreal Pierre Elliott Trudeau Intl

Wed 27/5

3:40 p.m.-10:52 p.m.

1 stop7h 12m

C$ 367

MontrealSantiago de los Caballeros

YUL - STI

YULSTI

Montreal Pierre Elliott Trudeau Intl

Tue 26/5

3:40 p.m.-10:52 p.m.

1 stop7h 12m

C$ 367

MontrealSantiago de los Caballeros

YUL - STI

YULSTI

Montreal Pierre Elliott Trudeau Intl

Mon 23/2

3:00 p.m.-11:51 p.m.

1 stop7h 51m

C$ 367

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 15 results
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Best time to book a flight from Montreal to Santiago de los Caballeros

Have a flexible travel schedule? Discover the best time to fly to Santiago de los Caballeros from Montreal 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 Montreal to Santiago de los Caballeros

What is the cheapest month to book a flight from Montreal to Santiago de los Caballeros?

Currently, October is the cheapest month in which you can book a flight from Montreal to Santiago de los Caballeros (average of C$ 307). Flying from Montreal to Santiago de los Caballeros in July is currently the most expensive (average of C$ 613). 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.

What is the cheapest time of day to fly from YMQ to STI?

Find hourly flight availability from Montreal to Santiago de los Caballeros. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 7 December 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 64% on flights from Montreal to Santiago de los Caballeros by exploring options for tickets at noon.

Reviews of airlines servicing Santiago de los Caballeros

Get insights into the airlines that provide service to Santiago de los Caballeros. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Santiago de los Caballeros. Reviews last updated 7 December 2025.
Get a feel of what it's like to fly with United Airlines from Montreal to Santiago de los Caballeros by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,076 reviews
Check prices

Crew

8.1

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
9,076 reviews
United Airlines
7.4
Good
9,076 reviews
Check prices

Crew

8.1

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

Find useful and relevant information for your journey from Montreal 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.

  • What airport do you fly into for flights to Santiago de los Caballeros from Montreal?

    Located just 10.9 km from the city centre, Santiago de los Caballeros is the airport most travellers will use when flying to Santiago de los Caballeros from Montreal. Booking flights from Montreal to Santiago (STI) should be relatively easy as there are 0 daily inbound flights from Montreal from 1 airline.

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

    Airlines like United Airlines fly from Montreal to Santiago de los Caballeros in about 7h 51m. The time it takes to get you to your destination can typically vary by up to . Montreal and Santiago de los Caballeros are separated by a distance of 2910 km.

  • What is the cheapest airline to fly from Montreal to Santiago de los Caballeros round-trip?

    Our cheapest airline available from Montreal to Santiago de los Caballeros is United Airlines. Our recent data shows that you can find tickets from as low as C$ 609 on this airline. This flight start at 39% lower than the current average price 3 months from now.

  • Can I find deals for flights from Montreal to Santiago de los Caballeros that include hotel bookings?

    Yes. In addition to deals on Montreal to Santiago de los Caballeros flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montreal 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 Montreal to Santiago de los Caballeros.

  • Can I find deals for business class flights from Montreal to Santiago de los Caballeros?

    Yes. Cheapflights offers flight deals from Montreal 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 Montreal to Santiago de los Caballeros?

    Currently, October is the cheapest month in which you can book a flight from Montreal to Santiago de los Caballeros (average of C$ 307). Flying from Montreal to Santiago de los Caballeros in July is currently the most expensive (average of C$ 613). 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

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Top airline flying from Montreal to Santiago de los Caballeros

Discover the top airline that operate flights from Montreal to Santiago de los Caballeros. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 7 December 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 609AverageC$ 906FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Montreal to Santiago de los Caballeros?

When you search for this flight from Montreal to Santiago de los Caballeros, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Montreal to Santiago de los Caballeros?

Cheapflights helps you find that perfect flight to Santiago de los Caballeros from Montreal by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Montreal to Santiago de los Caballeros with no change fees?

Yes, we can. To see specific flights from Montreal to Santiago de los Caballeros with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Montreal to Santiago de los Caballeros become cheaper?

Yes, Cheapflights offers price alerts on Montreal to Santiago de los Caballeros flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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