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Cheap flights from Montreal to Buenos Aires from C$ 335

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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — BUE
23 Aug — 30 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Montreal to Buenos Aires

Enter your travel dates to find the best prices.

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 24 July 2026.

Wed 2/97:00 a.m.
YUL
-
EZE
1 stop16h 05m
Arajet
Tue 29/99:15 a.m.
EZE
-
YUL
1 stop16h 05m
Arajet
Deal found 21/7C$ 701
Mon 7/97:00 a.m.
YUL
-
EZE
1 stop16h 05m
Arajet
Tue 22/99:15 a.m.
EZE
-
YUL
1 stop16h 05m
Arajet
Deal found 23/7C$ 791
Mon 14/97:00 a.m.
YUL
-
EZE
1 stop16h 05m
Arajet
Tue 29/99:15 a.m.
EZE
-
YUL
1 stop16h 05m
Arajet
Deal found 22/7C$ 793
Mon 21/97:00 a.m.
YUL
-
EZE
1 stop16h 05m
Arajet
Thu 1/1011:00 a.m.
EZE
-
YUL
1 stop14h 20m
Arajet
Deal found 19/7C$ 812
Mon 28/97:00 a.m.
YUL
-
EZE
1 stop16h 05m
Arajet
Tue 6/109:15 a.m.
EZE
-
YUL
1 stop16h 05m
Arajet
Deal found 20/7C$ 828
Mon 21/97:00 a.m.
YUL
-
EZE
1 stop16h 05m
Arajet
Tue 29/99:15 a.m.
EZE
-
YUL
1 stop16h 05m
Arajet
Deal found 22/7C$ 831
Wed 14/107:00 a.m.
YUL
-
EZE
1 stop16h 05m
Arajet
Thu 22/1011:00 a.m.
EZE
-
YUL
1 stop14h 20m
Arajet
Deal found 23/7C$ 836
Mon 7/97:00 a.m.
YUL
-
EZE
1 stop16h 05m
Arajet
Sun 20/98:40 a.m.
EZE
-
YUL
1 stop16h 40m
Arajet
Deal found 23/7C$ 839
Wed 23/97:00 a.m.
YUL
-
EZE
1 stop16h 05m
Arajet
Thu 1/1011:00 a.m.
EZE
-
YUL
1 stop14h 20m
Arajet
Deal found 24/7C$ 842
Thu 17/911:01 a.m.
YUL
-
EZE
1 stop33h 24m
Multiple Airlines
Thu 1/1011:00 a.m.
EZE
-
YUL
1 stop14h 20m
Multiple Airlines
Deal found 19/7C$ 853
Fri 18/911:01 a.m.
YUL
-
EZE
1 stop33h 24m
Multiple Airlines
Thu 1/1011:00 a.m.
EZE
-
YUL
1 stop14h 20m
Multiple Airlines
Deal found 19/7C$ 867
Mon 14/97:00 a.m.
YUL
-
AEP
2 stops24h 30m
Multiple Airlines
Tue 29/911:55 a.m.
AEP
-
YUL
2 stops34h 40m
Multiple Airlines
Deal found 22/7C$ 1,143

Find flight deals from Montreal to Buenos Aires

Discover tips and strategies to find the most affordable flight options for your journey from Montreal (YMQ) to Buenos Aires (BUE). 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 24 July 2026.

Round-trip from

C$ 701

One-way from

C$ 335

Popular in

February

Cheapest in

June

Average price

C$ 1,225
Arajet
  • Arajet
  • 2/9-29/9
  • 2 total stops
  • 32h 10m total
  • Montreal to Buenos Aires
Search Deals
Arajet
  • Arajet
  • 2/9
  • 1 total stop
  • 16h 05m total
  • Montreal to Buenos Aires
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (C$ 51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Montreal to Buenos Aires 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 24 July 2026.
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

Cheapest round-trip

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Tue 18/8

8:35 a.m.-4:36 a.m.

1 stop19h 01m

Buenos Aires Ministro Pistarini

Tue 25/8

8:59 a.m.-12:40 a.m.

1 stop16h 41m

C$ 1,066

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Fri 16/10

7:00 a.m.-6:45 a.m.

1 stop22h 45m

Buenos Aires Ministro Pistarini

Wed 4/11

2:45 a.m.-12:15 a.m.

1 stop23h 30m

C$ 1,083

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 11/11

6:45 a.m.-6:10 a.m.

1 stop21h 25m

Buenos Aires Ministro Pistarini

Sat 28/11

9:15 p.m.-12:15 a.m.

1 stop29h 00m

C$ 1,090

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Tue 13/10

8:35 a.m.-2:30 a.m.

1 stop16h 55m

Buenos Aires Ministro Pistarini

Thu 22/10

5:25 a.m.-12:40 a.m.

1 stop20h 15m

C$ 1,098
Quickest round-trip

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Mon 2/11

6:45 a.m.-12:05 a.m.

1 stop15h 20m

Buenos Aires Ministro Pistarini

Sun 29/11

8:40 a.m.-12:15 a.m.

1 stop17h 35m

C$ 1,101

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Thu 3/12

7:10 a.m.-4:17 a.m.

1 stop19h 07m

Buenos Aires Ministro Pistarini

Wed 9/12

3:46 a.m.-12:06 a.m.

1 stop22h 20m

C$ 1,102

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Fri 30/10

6:45 a.m.-7:40 p.m.

1 stop35h 55m

Buenos Aires Ministro Pistarini

Thu 3/12

11:00 a.m.-12:15 a.m.

1 stop15h 15m

C$ 1,118

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 4/11

7:22 a.m.-3:34 a.m.

1 stop18h 12m

Buenos Aires Ministro Pistarini

Thu 26/11

2:02 a.m.-12:07 a.m.

1 stop24h 05m

C$ 1,135

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Thu 5/11

7:22 a.m.-2:52 a.m.

1 stop17h 30m

Buenos Aires Ministro Pistarini

Sat 7/11

12:53 a.m.-12:07 a.m.

1 stop25h 14m

C$ 1,142

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Tue 13/10

6:00 a.m.-9:40 a.m.

2 stops26h 40m

Buenos Aires Ministro Pistarini

Tue 20/10

1:10 p.m.-1:35 p.m.

2 stops25h 25m

C$ 1,168

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/7

Showing 1-10 of 42 resultsSorted by cheapest first
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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

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$ 1,136). Flying from Montreal to Buenos Aires in December is currently the most expensive (average of C$ 1,395). 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.

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

Airfare is below average for this route at the moment.
Montreal to Buenos Aires flights typically cost between C$ 1,163 and C$ 1,607 in September.
The cheapest round-trip price found within the last 5 days was C$ 701 on Arajet (2 Sep-29 Sep).

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.

Panama City (PTY) – chosen by Cheapflights users on 43% of one-stop itineraries from Montreal to Buenos Aires on Cheapflights.

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.

Punta Cana (PUJ) is the most affordable 1-stop option, with an average round-trip price of C$ 1,034.

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.

Flights via Atlanta (ATL) have the shortest average one-way travel time for 1-stop routes: 14h 00m.

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.

Flights via Sao Paulo (GRU) offer the fastest connection on this route, with an average layover time of 1h 45m.

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

Booking 4 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.

Reviews of airlines servicing Buenos Aires

Get insights into the airlines that provide service to Buenos Aires. 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 Buenos Aires. Reviews last updated 24 July 2026.
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
1,562 reviews
Check prices

Crew

8.1

Food

6.9

Overall

7.6

Entertainment

6.8

Boarding

7.8

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Apr 2026

LIM - PTY

Fast boarding, polite and helpful staff. Lowest cost across all airlines
Copa Airlines
7.6
Good
1,562 reviews
Copa Airlines
7.6
Good
1,562 reviews
Check prices

Crew

8.1

Food

6.9

Overall

7.6

Entertainment

6.8

Boarding

7.8

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Apr 2026

LIM - PTY

Fast boarding, polite and helpful staff. Lowest cost across all airlines
LATAM Airlines
7.4
Good
1,965 reviews
Copa Airlines
7.6
Good
1,562 reviews
Check prices

Crew

8.1

Food

6.9

Overall

7.6

Entertainment

6.8

Boarding

7.8

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Apr 2026

LIM - PTY

Fast boarding, polite and helpful staff. Lowest cost across all airlines
United Airlines
7.4
Good
10,025 reviews
Copa Airlines
7.6
Good
1,562 reviews
Check prices

Crew

8.1

Food

6.9

Overall

7.6

Entertainment

6.8

Boarding

7.8

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Apr 2026

LIM - PTY

Fast boarding, polite and helpful staff. Lowest cost across all airlines
Air Canada
7.1
Good
11,377 reviews
Copa Airlines
7.6
Good
1,562 reviews
Check prices

Crew

8.1

Food

6.9

Overall

7.6

Entertainment

6.8

Boarding

7.8

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Apr 2026

LIM - PTY

Fast boarding, polite and helpful staff. Lowest cost across all airlines
Avianca
6.5
Okay
2,520 reviews
Copa Airlines
7.6
Good
1,562 reviews
Check prices

Crew

8.1

Food

6.9

Overall

7.6

Entertainment

6.8

Boarding

7.8

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Apr 2026

LIM - PTY

Fast boarding, polite and helpful staff. Lowest cost across all airlines

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?

    For as low as C$ 1,066, Copa Airlines can have you in Buenos Aires from Montreal in 19h 01m. 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$ 589), Arajet (C$ 697), and Avianca (C$ 1,064) offers the cheapest pricing from Montreal to Buenos Aires. These flights start at 51% lower than the current average price 3 months from now.

  • 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$ 1,136). Flying from Montreal to Buenos Aires in December is currently the most expensive (average of C$ 1,395). 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.

Top 7 airlines flying from Montreal to Buenos Aires

Discover the top 7 airlines that operate flights from Montreal to Buenos Aires. 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 24 July 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 589AverageC$ 1,204FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
ArajetCheapestC$ 697AverageC$ 1,213FlexibilityNo cancel feeOn-timeN/A
Search Arajet flights
AviancaCheapestC$ 1,064AverageC$ 1,372FlexibilityNo cancel feeOn-time71%
Search Avianca flights
Copa AirlinesCheapestC$ 1,072AverageC$ 1,219FlexibilityNo cancel feeOn-time70%
Search Copa Airlines flights
Air CanadaCheapestC$ 1,080AverageC$ 1,197FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 1,105AverageC$ 1,452FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LATAM AirlinesCheapestC$ 1,138AverageC$ 1,346FlexibilityNo cancel feeOn-time81%
Search LATAM 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 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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