How long is the flight from Montreal to Buenos Aires?

For as low as C$ 1,079, United Airlines can have you in Buenos Aires from Montreal in 15h 50m. The distance from Montreal to Buenos Aires is about 9051 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What are the cheapest airlines flying from Montreal to Buenos Aires round-trip?

According to our current data, Delta (C$ 874), Avianca (C$ 875), and Copa Airlines (C$ 1,048) offers the cheapest pricing from Montreal to Buenos Aires. These flights start at 29% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from Montreal to Buenos Aires one-way?

One-way options have recently been found by users for as low as C$ 518 on Avianca. Other airlines that offer cheap prices include Air Canada from C$ 531 and American Airlines from C$ 535 one-way.

In terms of precipitation, rainfall in Buenos Aires ranges from 50.0 - 100.0 mm per month. January is typically the wettest month, when rainfall can reach 100.0 mm. June is typically the driest time to visit Buenos Aires when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Buenos Aires, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 25.0 C. Travellers hoping to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 11.0 C).

What are the most popular airlines that fly from Montreal to Buenos Aires?

Consider Air Canada, Avianca or Copa Airlines when booking your flight. These represent the most popular airlines when flying from Montreal to Buenos Aires.

What is the cheapest day to fly round-trip from Montreal to Buenos Aires?

Flights from Montreal to Buenos Aires are generally found to be more expensive on Wednesday. This shouldn't discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Buenos Aires.

How far in advance should I book a flight from Montreal to Buenos Aires?

Users have found that booking a flight from Montreal to Buenos Aires at least 53 days early can save you up to 93% on average compared to booking a flight this week. If booking 53 days before your flight isn’t an option for you, users have found flights from Montreal to Buenos Aires for as little as C$ 1,104 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as C$ 1,104 for flights departing within the next 3 days.

What is the cheapest month to fly from Montreal to Buenos Aires?

Flights from Montreal to Buenos Aires lean towards being more expensive in December. Prices are generally better when you fly from Montreal to Buenos Aires in September, with the cheapest ticket starting at C$ 904.

Can I find deals for flights from Montreal to Buenos Aires that include hotel bookings?

Yes. In addition to deals on Montreal to Buenos Aires flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Montreal to Buenos Aires?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montreal to Buenos Aires.

Can I find deals for business class flights from Montreal to Buenos Aires?

Yes. Cheapflights offers flight deals from Montreal to Buenos Aires by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

C$ 452+ Cheap Flights from Montreal to Buenos Aires

Q: How much does it cost to fly round-trip from Montreal to Buenos Aires?

Airfare is typical for this route at the moment. Montreal to Buenos Aires flights typically cost between C$ 1,056 and C$ 1,146 in November. The cheapest round-trip price found within the last 3 days was C$ 1,057 on Avianca (12 Nov-19 Nov).

Cheapflights Tip: The best prices from Montreal to Buenos Aires are usually found in September or May, booked 52 days in advance, depart on a Wednesday or Sunday and return on a Tuesday

Cheap flight deals from Montreal to Buenos Aires

Round-trip from	C$ 1,057
One-way from	C$ 452
Popular in	December
Cheapest in	September
Average price	C$ 1,121

Avianca
12/11-19/11
2 total stops
30h 50m total
Montreal to Buenos Aires

Search Deals

Arajet
31/12
1 total stop
15h 20m total
Montreal to Buenos Aires

Search Deals

Highest demand for flights based on searches. 8% potential increase in price (C$ 162 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 49 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find flight deals from Montreal to Buenos Aires

Cheapest flights from Montreal to Buenos Aires
Explore the most affordable flight options available from Montreal to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

Wed 12/1110:00 p.m.YUL - EZE

1 stop15h 50mAvianca

Wed 19/117:35 a.m.EZE - YUL

1 stop15h 00mAvianca

Deal found 11/9C$ 1,057

Wed 29/108:41 a.m.YUL - EZE

1 stop18h 29mCopa Airlines

Wed 3/129:03 a.m.EZE - YUL

1 stop16h 40mCopa Airlines

Deal found 9/9C$ 1,063

Tue 11/116:00 a.m.YUL - EZE

2 stops25h 20mUnited Airlines

Thu 20/1111:55 p.m.EZE - YUL

2 stops40h 05mUnited Airlines

Deal found 11/9C$ 1,068

Wed 12/116:00 a.m.YUL - EZE

2 stops23h 20mUnited Airlines

Tue 25/1110:05 p.m.EZE - YUL

2 stops17h 55mUnited Airlines

Deal found 9/9C$ 1,071

Sun 16/1110:00 p.m.YUL - EZE

1 stop15h 50mAvianca

Sat 29/111:40 a.m.EZE - YUL

1 stop20h 55mAvianca

Deal found 10/9C$ 1,074

Mon 10/112:29 p.m.YUL - EZE

2 stops18h 11mAmerican Airlines

Mon 24/119:40 p.m.EZE - YUL

2 stops16h 35mAmerican Airlines

Deal found 9/9C$ 1,075

Mon 10/1110:00 p.m.YUL - EZE

1 stop15h 50mAvianca

Mon 24/117:35 a.m.EZE - YUL

1 stop15h 00mAvianca

Deal found 11/9C$ 1,078

Mon 10/117:10 a.m.YUL - EZE

1 stop19h 00mCopa Airlines

Mon 24/115:16 a.m.EZE - YUL

1 stop20h 27mCopa Airlines

Deal found 9/9C$ 1,082

Tue 11/117:10 a.m.YUL - EZE

1 stop19h 06mCopa Airlines

Tue 25/115:16 a.m.EZE - YUL

1 stop20h 27mCopa Airlines

Deal found 11/9C$ 1,084

Mon 10/117:00 a.m.YUL - AEP

2 stops22h 55mLATAM Airlines

Mon 24/115:15 p.m.AEP - YUL

2 stops20h 25mLATAM Airlines

Deal found 9/9C$ 1,116

Sat 8/112:45 p.m.YUL - AEP

2 stops25h 55mLATAM Airlines

Thu 27/113:40 p.m.AEP - YUL

2 stops22h 00mLATAM Airlines

Deal found 9/9C$ 1,117

Fri 14/117:00 a.m.YUL - AEP

2 stops22h 55mLATAM Airlines

Mon 8/125:15 p.m.AEP - YUL

2 stops20h 19mLATAM Airlines

Deal found 9/9C$ 1,120

Best flights from Montreal to Buenos Aires
Discover carefully curated flight deals from Montreal to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 11 September 2025.

Wed 21/17:00 a.m.YUL - EZE

2 stops24h 20mUnited Airlines

Thu 12/39:05 p.m.EZE - YUL

2 stops24h 13mUnited Airlines

Deal found 10/9C$ 1,068

Mon 10/1110:00 p.m.YUL - EZE

1 stop15h 50mAvianca

Mon 24/117:35 a.m.EZE - YUL

1 stop15h 00mAvianca

Deal found 11/9C$ 1,079

Tue 11/117:10 a.m.YUL - EZE

1 stop19h 06mCopa Airlines

Mon 24/113:57 a.m.EZE - YUL

1 stop21h 46mCopa Airlines

Deal found 9/9C$ 1,082

Tue 11/117:00 a.m.YUL - AEP

2 stops22h 55mLATAM Airlines

Tue 25/115:15 p.m.AEP - YUL

2 stops26h 06mLATAM Airlines

Deal found 10/9C$ 1,120

Sun 1/31:30 p.m.YUL - AEP

2 stops19h 00mMultiple Airlines

Sun 8/38:25 p.m.AEP - YUL

2 stops20h 59mMultiple Airlines

Deal found 9/9C$ 1,208

Thu 27/119:15 a.m.YUL - EZE

2 stops22h 05mUnited Airlines

Thu 4/1210:05 p.m.EZE - YUL

2 stops19h 11mUnited Airlines

Deal found 9/9C$ 1,071

Mon 23/27:00 a.m.YUL - AEP

2 stops29h 40mLATAM Airlines

Wed 18/33:40 p.m.AEP - YUL

2 stops26h 24mLATAM Airlines

Deal found 10/9C$ 1,147

Sat 24/14:45 p.m.YUL - EZE

2 stops38h 35mUnited Airlines

Tue 17/39:05 p.m.EZE - YUL

2 stops24h 13mUnited Airlines

Deal found 10/9C$ 1,084

Mon 23/27:00 a.m.YUL - AEP

2 stops29h 40mLATAM Airlines

Mon 16/32:55 p.m.AEP - YUL

2 stops27h 09mLATAM Airlines

Deal found 10/9C$ 1,178

Mon 5/16:45 a.m.YUL - AEP

2 stops43h 35mMultiple Airlines

Wed 28/15:15 a.m.AEP - YUL

1 stop15h 05mMultiple Airlines

Deal found 8/9C$ 1,297

Tue 18/116:00 a.m.YUL - EZE

2 stops25h 20mUnited Airlines

Sun 30/1111:55 p.m.EZE - YUL

2 stops40h 05mUnited Airlines

Deal found 10/9C$ 1,085

Thu 13/112:13 p.m.YUL - EZE

2 stops39h 07mUnited Airlines

Fri 21/1111:55 p.m.EZE - YUL

2 stops23h 22mUnited Airlines

Deal found 10/9C$ 1,085

Last-minute flights from Montreal to Buenos Aires
Discover last-minute flight deals from Montreal to Buenos Aires. Data last updated 11 September 2025 and is based on user searches.

Mon 15/92:31 p.m.YUL - EZE

2 stops18h 44mAmerican Airlines

Tue 14/109:15 p.m.EZE - YUL

2 stops26h 25mAmerican Airlines

Deal found 9/9C$ 1,092

Tue 30/910:40 p.m.YUL - EZE

1 stop14h 50mAir Canada

Thu 16/104:35 p.m.EZE - YUL

2 stops21h 45mAir Canada

Deal found 10/9C$ 1,096

Tue 30/912:47 p.m.YUL - AEP

2 stops28h 48mLATAM Airlines

Thu 16/105:05 p.m.AEP - YUL

2 stops25h 29mLATAM Airlines

Deal found 9/9C$ 1,170

Tue 7/1010:40 p.m.YUL - EZE

1 stop14h 50mAir Canada

Thu 23/104:35 p.m.EZE - YUL

1 stop14h 40mAir Canada

Deal found 9/9C$ 1,089

Tue 7/106:40 p.m.YUL - AEP

2 stops22h 55mLATAM Airlines

Tue 14/105:05 p.m.AEP - YUL

2 stops19h 26mLATAM Airlines

Deal found 11/9C$ 1,163

Sat 11/106:15 a.m.YUL - EZE

2 stops24h 45mUnited Airlines

Sat 18/109:00 p.m.EZE - YUL

2 stops49h 29mUnited Airlines

Deal found 10/9C$ 1,100

Sat 18/109:50 p.m.YUL - EZE

2 stops39h 40mAir Canada

Sun 26/104:45 p.m.EZE - YUL

2 stops19h 38mAir Canada

Deal found 11/9C$ 1,103

Tue 21/1010:40 p.m.YUL - EZE

1 stop14h 50mAir Canada

Fri 7/114:45 p.m.EZE - YUL

1 stop15h 25mAir Canada

Deal found 11/9C$ 1,085

Tue 21/109:45 a.m.YUL - EZE

2 stops21h 15mUnited Airlines

Sat 8/1110:05 p.m.EZE - YUL

2 stops19h 11mUnited Airlines

Deal found 11/9C$ 1,098

Wed 29/108:41 a.m.YUL - EZE

1 stop18h 29mCopa Airlines

Wed 3/129:03 a.m.EZE - YUL

1 stop16h 40mCopa Airlines

Deal found 9/9C$ 1,063

Wed 29/107:29 a.m.YUL - EZE

2 stops22h 36mAmerican Airlines

Wed 3/1211:59 p.m.EZE - YUL

2 stops25h 00mAmerican Airlines

Deal found 9/9C$ 1,078

Wed 29/1010:30 p.m.YUL - EZE

2 stops39h 40mAir Canada

Wed 3/124:45 p.m.EZE - YUL

1 stop15h 25mAir Canada

Deal found 10/9C$ 1,099

One-way flights from Montreal to Buenos Aires
Search for one-way flight options from Montreal to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated 11 September 2025.

Wed 31/126:45 a.m.YUL - EZE

1 stop15h 20mArajet

Deal found 9/9C$ 452

Fri 9/16:45 a.m.YUL - AEP

2 stops24h 45mMultiple Airlines

Deal found 11/9C$ 500

Mon 3/1110:00 p.m.YUL - EZE

1 stop15h 50mAvianca

Deal found 9/9C$ 511

Fri 30/16:45 a.m.YUL - EZE

2 stops36h 05mMultiple Airlines

Deal found 11/9C$ 514

Wed 12/1110:00 p.m.YUL - EZE

1 stop15h 50mAvianca

Deal found 11/9C$ 517

Tue 11/118:55 p.m.YUL - EZE

1 stop16h 15mAir Canada

Deal found 11/9C$ 531

Wed 17/910:40 p.m.YUL - EZE

1 stop14h 50mAir Canada

Deal found 9/9C$ 532

Wed 17/912:47 p.m.YUL - AEP

2 stops41h 53mLATAM Airlines

Deal found 9/9C$ 535

Tue 11/117:00 a.m.YUL - EZE

2 stops22h 00mAmerican Airlines

Deal found 9/9C$ 535

Mon 5/16:00 a.m.YUL - EZE

2 stops25h 20mUnited Airlines

Deal found 8/9C$ 536

Mon 5/16:45 a.m.YUL - AEP

2 stops43h 35mMultiple Airlines

Deal found 11/9C$ 538

Wed 12/1110:30 p.m.YUL - EZE

2 stops38h 40mAir Canada

Deal found 11/9C$ 539

Cheapflights Fare Finder

Use the filters below to find and compare flights from Montreal to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 21/1

7:00 a.m.-9:20 a.m.

2 stops24h 20m

Buenos Aires Ministro Pistarini

Thu 12/3

9:05 p.m.-8:18 p.m.

2 stops24h 13m

C$ 1,068

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Thu 27/11

9:15 a.m.-9:20 a.m.

2 stops22h 05m

Buenos Aires Ministro Pistarini

Thu 4/12

10:05 p.m.-3:16 p.m.

2 stops19h 11m

C$ 1,071

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Mon 10/11

10:00 p.m.-3:50 p.m.

1 stop15h 50m

Buenos Aires Ministro Pistarini

Mon 24/11

7:35 a.m.-8:35 p.m.

1 stop15h 00m

C$ 1,079

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Tue 11/11

7:10 a.m.-4:16 a.m.

1 stop19h 06m

Buenos Aires Ministro Pistarini

Mon 24/11

3:57 a.m.-11:43 p.m.

1 stop21h 46m

C$ 1,082

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Sat 24/1

4:45 p.m.-9:20 a.m.

2 stops38h 35m

Buenos Aires Ministro Pistarini

Tue 17/3

9:05 p.m.-8:18 p.m.

2 stops24h 13m

C$ 1,084

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Tue 18/11

6:00 a.m.-9:20 a.m.

2 stops25h 20m

Buenos Aires Ministro Pistarini

Sun 30/11

11:55 p.m.-2:00 p.m.

2 stops40h 05m

C$ 1,085

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Thu 13/11

2:13 p.m.-7:20 a.m.

2 stops39h 07m

Buenos Aires Ministro Pistarini

Fri 21/11

11:55 p.m.-9:17 p.m.

2 stops23h 22m

C$ 1,085

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Thu 13/11

2:13 p.m.-7:20 a.m.

2 stops39h 07m

Buenos Aires Ministro Pistarini

Sat 22/11

11:55 p.m.-2:00 p.m.

2 stops40h 05m

C$ 1,085

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Fri 14/11

6:00 a.m.-7:20 a.m.

2 stops23h 20m

Buenos Aires Ministro Pistarini

Fri 21/11

10:05 p.m.-9:17 p.m.

2 stops25h 12m

C$ 1,098

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Sun 9/11

2:13 p.m.-7:20 a.m.

2 stops39h 07m

Buenos Aires Ministro Pistarini

Sun 16/11

11:55 p.m.-9:42 p.m.

2 stops23h 47m

C$ 1,098

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/9

Showing 1-10 of 42 results

...

Best time to book a flight from Montreal to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires 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 Buenos Aires

How far ahead should I book a flight from Montreal to Buenos Aires?

Booking 52 days in advance of your planned departure date is, on average, the best time to get cheap flights from Montreal to Buenos Aires. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Montreal to Buenos Aires?

Currently, September is the cheapest month in which you can book a flight from Montreal to Buenos Aires (average of C$ 810). Flying from Montreal to Buenos Aires in December is currently the most expensive (average of C$ 1,063). 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 BUE?

One of the essential ways to save on airfare from Montreal to Buenos Aires is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 6% on airfare.

What is the cheapest day to fly from Montreal to Buenos Aires?

Travelers seeking maximum savings on their Montreal to Buenos Aires flight should consider departing on Wednesday at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Montreal to Buenos Aires?

What’s the top layover airport for flights from Montreal to Buenos Aires?

Sao Paulo (GRU) – chosen by Cheapflights users on 46% of one-stop itineraries from Montreal to Buenos Aires on Cheapflights.

What’s the cheapest layover airport for flights from Montreal to Buenos Aires?

Punta Cana (PUJ) is the most affordable 1-stop option, with an average round-trip price of C$ 1,115.

What’s the fastest layover option from Montreal to Buenos Aires?

Flights via Punta Cana (PUJ) have the shortest average one-way travel time for 1-stop routes: 14h 45m.

Which airport typically offers the quickest layover for flights from Montreal to Buenos Aires?

Flights via Punta Cana (PUJ) offer the fastest connection on this route, with an average layover time of 1h 36m.

Reviews of airlines servicing Buenos Aires

Get a feel of what it's like to fly with Copa Airlines,LATAM Airlines, andUnited Airlines from Montreal to Buenos Aires by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Copa Airlines

7.6

Good

1,531 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Juan Pablo,Sep 2025

MEX - PTY

never better, had a very plesent trip to panama, cant say the same thing of my trip, from panama to santa cruz... it was very poor, unconftrable and boring

Copa Airlines

7.6

Good

1,531 reviews

Copa Airlines

7.6

Good

1,531 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Juan Pablo,Sep 2025

MEX - PTY

never better, had a very plesent trip to panama, cant say the same thing of my trip, from panama to santa cruz... it was very poor, unconftrable and boring

LATAM Airlines

7.5

Good

1,847 reviews

Copa Airlines

7.6

Good

1,531 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Juan Pablo,Sep 2025

MEX - PTY

never better, had a very plesent trip to panama, cant say the same thing of my trip, from panama to santa cruz... it was very poor, unconftrable and boring

United Airlines

7.4

Good

8,937 reviews

Copa Airlines

7.6

Good

1,531 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Juan Pablo,Sep 2025

MEX - PTY

never better, had a very plesent trip to panama, cant say the same thing of my trip, from panama to santa cruz... it was very poor, unconftrable and boring

Air Canada

7.1

Good

10,000 reviews

Copa Airlines

7.6

Good

1,531 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Juan Pablo,Sep 2025

MEX - PTY

never better, had a very plesent trip to panama, cant say the same thing of my trip, from panama to santa cruz... it was very poor, unconftrable and boring

Avianca

6.7

Okay

2,436 reviews

Copa Airlines

7.6

Good

1,531 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Juan Pablo,Sep 2025

MEX - PTY

never better, had a very plesent trip to panama, cant say the same thing of my trip, from panama to santa cruz... it was very poor, unconftrable and boring

Related info for your journey

How long is the flight from Montreal to Buenos Aires?
For as low as C$ 1,079, United Airlines can have you in Buenos Aires from Montreal in 15h 50m. The distance from Montreal to Buenos Aires is about 9051 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines flying from Montreal to Buenos Aires round-trip?
According to our current data, Delta (C$ 874), Avianca (C$ 875), and Copa Airlines (C$ 1,048) offers the cheapest pricing from Montreal to Buenos Aires. These flights start at 29% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Montreal to Buenos Aires one-way?
One-way options have recently been found by users for as low as C$ 518 on Avianca. Other airlines that offer cheap prices include Air Canada from C$ 531 and American Airlines from C$ 535 one-way.
Can I find deals for flights from Montreal to Buenos Aires that include hotel bookings?
Yes. In addition to deals on Montreal to Buenos Aires flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Montreal to Buenos Aires?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montreal to Buenos Aires.
Can I find deals for business class flights from Montreal to Buenos Aires?
Yes. Cheapflights offers flight deals from Montreal to Buenos Aires 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 Buenos Aires?
Currently, September is the cheapest month in which you can book a flight from Montreal to Buenos Aires (average of C$ 810). Flying from Montreal to Buenos Aires in December is currently the most expensive (average of C$ 1,063). 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

Top 6 airlines flying from Montreal to Buenos Aires

Airline	Cheapest	Average	Flexibility	On-time
Delta	CheapestC$ 874	AverageC$ 1,241	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Avianca	CheapestC$ 875	AverageC$ 1,124	FlexibilityNo cancel fee	On-time71%	Search Avianca flights
Copa Airlines	CheapestC$ 1,048	AverageC$ 1,329	FlexibilityNo cancel fee	On-time70%	Search Copa Airlines flights
Air Canada	CheapestC$ 1,095	AverageC$ 1,389	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Arajet	CheapestC$ 1,100	AverageC$ 1,257	FlexibilityNo cancel fee	On-timeN/A	Search Arajet flights
United Airlines	CheapestC$ 1,108	AverageC$ 1,512	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from Montreal to Buenos Aires?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Montreal to Buenos Aires. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Montreal to Buenos Aires?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Montreal to Buenos Aires for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Montreal to Buenos Aires with no change fees?

Need flexible booking options for your flight to Buenos Aires from Montreal? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Montreal to Buenos Aires become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Buenos Aires from Montreal today and book when prices fit your budget.

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Cheap flights from Montreal to Buenos Aires from C$ 452

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 31/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Montreal to Buenos Aires are usually found in September or May, booked 52 days in advance, depart on a Wednesday or Sunday and return on a Tuesday

Cheap flight deals from Montreal to Buenos Aires

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Montreal to Buenos Aires

Cheapest flights from Montreal to Buenos AiresExplore the most affordable flight options available from Montreal to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

Explore the most affordable flight options available from Montreal to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

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Use the filters below to find and compare flights from Montreal to Buenos Aires that are best for you.

Best time to book a flight from Montreal to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Montreal with our price prediction graph.

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Everything you need to know about your flight from Montreal to Buenos Aires

How far ahead should I book a flight from Montreal to Buenos Aires?

Use this chart to determine the optimal time to book a round-trip flight from Montreal to Buenos Aires. Price data was last updated on 29 August 2025.

What is the cheapest month to book a flight from Montreal to Buenos Aires?

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

Find hourly flight availability from Montreal to Buenos Aires. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 September 2025.

What is the cheapest day to fly from Montreal to Buenos Aires?

Use this chart to determine the cheapest time to fly round-trip from Montreal to Buenos Aires. Price data was last updated on 16 December 2024.

How much does it cost to fly round-trip from Montreal to Buenos Aires?

What’s the top layover airport for flights from Montreal to Buenos Aires?

Share of one-stop round-trip flights from Montreal to Buenos Aires chosen by Cheapflights users in the past 12 months, using the same layover each way.

What’s the cheapest layover airport for flights from Montreal to Buenos Aires?

Average round-trip fare for 1-stop flights from Montreal to Buenos Aires, chosen by Cheapflights users in the past 12 months, with the same layover each way.

What’s the fastest layover option from Montreal to Buenos Aires?

Shortest average travel time for 1-stop one-way flights from Montreal to Buenos Aires, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Which airport typically offers the quickest layover for flights from Montreal to Buenos Aires?

Average layover duration for 1-stop one-way flights from Montreal to Buenos Aires, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Buenos Aires

Get a feel of what it's like to fly with Copa Airlines,LATAM Airlines, andUnited Airlines from Montreal to Buenos Aires by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Montreal to Buenos Aires. 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 Montreal to Buenos Aires?

What are the cheapest airlines flying from Montreal to Buenos Aires round-trip?

What are the cheapest airlines to fly from Montreal to Buenos Aires one-way?

Can I find deals for flights from Montreal to Buenos Aires that include hotel bookings?

How can I find direct flights from Montreal to Buenos Aires?

Can I find deals for business class flights from Montreal to Buenos Aires?

What is the cheapest month to book a flight from Montreal to Buenos Aires?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Montreal to Buenos Aires

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Montreal to Buenos Aires

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Cheapest flights from Montreal to Buenos Aires
Explore the most affordable flight options available from Montreal to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.