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Cheap flights from Montreal to Buenos Aires from C$ 478

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 23/9. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — BUE
26 May — 2 Jun1
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 26 April 2026.

Mon 15/67:00 a.m.
YUL
-
EZE
1 stop16h 05m
Arajet
Sun 21/68:40 a.m.
EZE
-
YUL
1 stop16h 40m
Arajet
Deal found 22/4C$ 846
Wed 10/67:00 a.m.
YUL
-
EZE
1 stop16h 05m
Arajet
Tue 30/69:15 a.m.
EZE
-
YUL
1 stop16h 05m
Arajet
Deal found 24/4C$ 955
Mon 1/67:00 a.m.
YUL
-
EZE
1 stop16h 05m
Arajet
Sun 7/68:40 a.m.
EZE
-
YUL
1 stop16h 40m
Arajet
Deal found 21/4C$ 988
Wed 30/97:00 a.m.
YUL
-
EZE
1 stop16h 05m
Arajet
Sun 11/108:40 a.m.
EZE
-
YUL
1 stop16h 40m
Arajet
Deal found 22/4C$ 1,008
Sat 29/81:15 p.m.
YUL
-
EZE
1 stop13h 55m
Arajet
Thu 10/911:00 a.m.
EZE
-
YUL
1 stop14h 20m
Arajet
Deal found 21/4C$ 1,011
Mon 24/87:00 a.m.
YUL
-
EZE
1 stop16h 05m
Arajet
Tue 8/911:00 a.m.
EZE
-
YUL
1 stop14h 20m
Arajet
Deal found 21/4C$ 1,017
Sat 22/81:15 p.m.
YUL
-
EZE
1 stop13h 55m
Arajet
Sun 6/98:40 a.m.
EZE
-
YUL
1 stop16h 40m
Arajet
Deal found 23/4C$ 1,019
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 21/4C$ 1,033
Mon 12/107:00 a.m.
YUL
-
EZE
1 stop16h 05m
Arajet
Thu 29/107:10 a.m.
EZE
-
YUL
1 stop18h 10m
Arajet
Deal found 24/4C$ 1,041
Mon 12/109:30 p.m.
YUL
-
EZE
2 stops40h 00m
Multiple Airlines
Thu 29/107:10 a.m.
EZE
-
YUL
1 stop18h 10m
Multiple Airlines
Deal found 24/4C$ 1,048
Mon 9/116:45 a.m.
YUL
-
EZE
1 stop15h 20m
Arajet
Thu 26/1111:00 a.m.
EZE
-
YUL
1 stop15h 15m
Arajet
Deal found 25/4C$ 1,066
Fri 6/116:45 a.m.
YUL
-
EZE
1 stop22h 00m
Arajet
Sun 22/118:40 a.m.
EZE
-
YUL
1 stop17h 35m
Arajet
Deal found 21/4C$ 1,067

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 26 April 2026.

Round-trip from

C$ 846

One-way from

C$ 478

Popular in

July

Cheapest in

June

Average price

C$ 1,231
Arajet
  • Arajet
  • 15/6-21/6
  • 2 total stops
  • 32h 45m total
  • Montreal to Buenos Aires
Search Deals
Arajet
  • Arajet
  • 23/9
  • 1 total stop
  • 16h 05m total
  • Montreal to Buenos Aires
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 69 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 26 April 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
Quickest round-trip

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 10/6

7:00 a.m.-12:05 a.m.

1 stop16h 05m

Buenos Aires Ministro Pistarini

Tue 30/6

9:15 a.m.-12:20 a.m.

1 stop16h 05m

C$ 955

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Thu 11/6

8:35 a.m.-4:30 a.m.

1 stop18h 55m

Buenos Aires Ministro Pistarini

Thu 18/6

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

1 stop20h 15m

C$ 1,157

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 17/6

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

1 stop16h 55m

Buenos Aires Ministro Pistarini

Wed 24/6

9:02 a.m.-12:40 a.m.

1 stop16h 38m

C$ 1,157

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Mon 12/10

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

1 stop16h 55m

Buenos Aires Ministro Pistarini

Thu 29/10

5:11 a.m.-12:40 a.m.

1 stop20h 29m

C$ 1,160

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 9/9

12:45 p.m.-9:20 a.m.

2 stops19h 35m

Buenos Aires Ministro Pistarini

Tue 29/9

8:10 p.m.-11:44 a.m.

1 stop16h 34m

C$ 1,185

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Mon 21/9

6:15 p.m.-9:45 a.m.

1 stop14h 30m

Buenos Aires Ministro Pistarini

Mon 5/10

1:10 p.m.-11:51 p.m.

2 stops35h 41m

C$ 1,185

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 16/9

12:45 p.m.-9:20 a.m.

2 stops19h 35m

Buenos Aires Ministro Pistarini

Tue 6/10

8:10 p.m.-12:15 p.m.

2 stops17h 05m

C$ 1,186

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Thu 17/9

7:00 a.m.-9:45 a.m.

1 stop25h 45m

Buenos Aires Ministro Pistarini

Tue 6/10

8:10 p.m.-11:44 a.m.

1 stop16h 34m

C$ 1,186

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Thu 2/7

9:30 a.m.-9:20 a.m.

2 stops22h 50m

Buenos Aires Ministro Pistarini

Mon 27/7

1:10 p.m.-5:38 p.m.

2 stops29h 28m

C$ 1,187

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 16/9

7:00 a.m.-12:05 a.m.

1 stop16h 05m

Buenos Aires Ministro Pistarini

Sun 4/10

8:40 a.m.-12:20 a.m.

1 stop16h 40m

C$ 1,194

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/4

Showing 1-10 of 41 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

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

Booking 84 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, April is the cheapest month in which you can book a flight from Montreal to Buenos Aires (average of C$ 333). Flying from Montreal to Buenos Aires in September is currently the most expensive (average of C$ 730). 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?

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 48% 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.

Bogotá (BOG) is the most affordable 1-stop option, with an average round-trip price of C$ 1,035.

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.

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 26 April 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
7.5
Good
1,578 reviews
Check prices

Overall

7.5

Comfort

7.4

Entertainment

6.8

Boarding

7.8

Crew

8.1

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Katerine,Mar 2026

LAX - PTY

Really i was expecting be more friendly with family’s, more when you travel with a infant. We expected like a priority to boarding or be friendly with the spots on the aeroplane.
Copa Airlines
7.5
Good
1,578 reviews
Copa Airlines
7.5
Good
1,578 reviews
Check prices

Overall

7.5

Comfort

7.4

Entertainment

6.8

Boarding

7.8

Crew

8.1

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Katerine,Mar 2026

LAX - PTY

Really i was expecting be more friendly with family’s, more when you travel with a infant. We expected like a priority to boarding or be friendly with the spots on the aeroplane.
LATAM Airlines
7.4
Good
1,911 reviews
Copa Airlines
7.5
Good
1,578 reviews
Check prices

Overall

7.5

Comfort

7.4

Entertainment

6.8

Boarding

7.8

Crew

8.1

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Katerine,Mar 2026

LAX - PTY

Really i was expecting be more friendly with family’s, more when you travel with a infant. We expected like a priority to boarding or be friendly with the spots on the aeroplane.
United Airlines
7.4
Good
9,658 reviews
Copa Airlines
7.5
Good
1,578 reviews
Check prices

Overall

7.5

Comfort

7.4

Entertainment

6.8

Boarding

7.8

Crew

8.1

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Katerine,Mar 2026

LAX - PTY

Really i was expecting be more friendly with family’s, more when you travel with a infant. We expected like a priority to boarding or be friendly with the spots on the aeroplane.
Air Canada
7.1
Good
10,973 reviews
Copa Airlines
7.5
Good
1,578 reviews
Check prices

Overall

7.5

Comfort

7.4

Entertainment

6.8

Boarding

7.8

Crew

8.1

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Katerine,Mar 2026

LAX - PTY

Really i was expecting be more friendly with family’s, more when you travel with a infant. We expected like a priority to boarding or be friendly with the spots on the aeroplane.
Avianca
6.5
Okay
2,514 reviews
Copa Airlines
7.5
Good
1,578 reviews
Check prices

Overall

7.5

Comfort

7.4

Entertainment

6.8

Boarding

7.8

Crew

8.1

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Katerine,Mar 2026

LAX - PTY

Really i was expecting be more friendly with family’s, more when you travel with a infant. We expected like a priority to boarding or be friendly with the spots on the aeroplane.

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$ 955, Arajet can have you in Buenos Aires from Montreal in 16h 05m. 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$ 555), Arajet (C$ 819), and Copa Airlines (C$ 855) offers the cheapest pricing from Montreal to Buenos Aires. These flights start at 53% 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, April is the cheapest month in which you can book a flight from Montreal to Buenos Aires (average of C$ 333). Flying from Montreal to Buenos Aires in September is currently the most expensive (average of C$ 730). 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 26 April 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 555AverageC$ 1,169FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
ArajetCheapestC$ 819AverageC$ 1,172FlexibilityNo cancel feeOn-timeN/A
Search Arajet flights
Copa AirlinesCheapestC$ 855AverageC$ 1,203FlexibilityNo cancel feeOn-time70%
Search Copa Airlines flights
Air CanadaCheapestC$ 914AverageC$ 1,123FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LATAM AirlinesCheapestC$ 971AverageC$ 1,330FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
AviancaCheapestC$ 1,014AverageC$ 1,291FlexibilityNo cancel feeOn-time71%
Search Avianca flights
United AirlinesCheapestC$ 1,073AverageC$ 1,331FlexibilityNo 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 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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