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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires from C$ 332

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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — BUE
14 Sep — 21 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Pierre Elliott Trudeau Intl to Buenos Aires

Enter your travel dates to find the best prices.

Cheapest flights from Pierre Elliott Trudeau Intl to Buenos Aires
Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 August 2026.

Mon 21/97:00 a.m. -
2 stops37h 20m
Tue 6/109:15 a.m. -
1 stop16h 05m
Deal found 14/8C$ 818
Wed 7/107:00 a.m. -
1 stop16h 05m
Tue 24/1111:00 a.m. -
1 stop15h 15m
Deal found 10/8C$ 826
Mon 21/97:00 a.m. -
1 stop16h 05m
Tue 6/109:15 a.m. -
1 stop16h 05m
Deal found 14/8C$ 874
Wed 11/116:45 a.m. -
1 stop15h 20m
Tue 24/1111:00 a.m. -
1 stop15h 15m
Deal found 11/8C$ 888
Wed 9/97:00 a.m. -
1 stop16h 05m
Thu 24/99:45 a.m. -
1 stop15h 35m
Deal found 14/8C$ 900
Mon 5/107:00 a.m. -
1 stop16h 05m
Tue 24/1111:00 a.m. -
1 stop15h 15m
Deal found 10/8C$ 917
Wed 7/107:00 a.m. -
1 stop16h 05m
Sun 22/118:40 a.m. -
1 stop17h 35m
Deal found 10/8C$ 926
Mon 16/116:45 a.m. -
1 stop15h 20m
Tue 8/1211:00 a.m. -
1 stop15h 15m
Deal found 14/8C$ 935
Mon 2/116:45 a.m. -
1 stop15h 20m
Thu 26/1111:00 a.m. -
1 stop15h 15m
Deal found 11/8C$ 936
Mon 9/116:45 a.m. -
1 stop15h 20m
Thu 3/1211:00 a.m. -
1 stop15h 15m
Deal found 11/8C$ 938
Mon 9/116:45 a.m. -
1 stop15h 20m
Tue 17/1111:00 a.m. -
1 stop15h 15m
Deal found 13/8C$ 939
Mon 2/116:45 a.m. -
3 stops35h 55m
Mon 23/1110:10 p.m. -
2 stops24h 35m
Deal found 13/8C$ 1,108

Find flight deals from Pierre Elliott Trudeau Intl to Buenos Aires

Discover tips and strategies to find the most affordable flight options for your journey from Pierre Elliott Trudeau Intl (YUL) 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 15 August 2026.

Round-trip from

C$ 818

One-way from

C$ 332

Popular in

December

Cheapest in

September

Average price

C$ 1,153
Arajet
  • Arajet
  • 21/9-6/10
  • 3 total stops
  • 53h 25m total
  • Montreal to Buenos Aires
Search Deals
Arajet
  • Arajet
  • 7/9
  • 1 total stop
  • 16h 05m total
  • Montreal to Buenos Aires
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 62 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 August 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pierre Elliott Trudeau Intl 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 15 August 2026.
Use the filters below to find and compare flights from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealBuenos Aires

YUL Montreal Pierre Elliott Trudeau Intl - EZE Buenos Aires Ministro Pistarini

YULEZE

Montreal Pierre Elliott Trudeau Intl

Mon 26/10

6:45 a.m.-7:50 a.m.

1 stop24h 05m

Buenos Aires Ministro Pistarini

Wed 18/11

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

1 stop29h 00m

C$ 1,017

MontrealBuenos Aires

YUL Montreal Pierre Elliott Trudeau Intl - EZE Buenos Aires Ministro Pistarini

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 11/11

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

1 stop15h 20m

Buenos Aires Ministro Pistarini

Thu 3/12

7:10 a.m.-12:15 a.m.

1 stop19h 05m

C$ 1,113
Quickest round-trip

MontrealBuenos Aires

YUL Montreal Pierre Elliott Trudeau Intl - EZE Buenos Aires Ministro Pistarini

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 11/11

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

1 stop15h 20m

Buenos Aires Ministro Pistarini

Sun 6/12

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

1 stop17h 35m

C$ 1,139

MontrealBuenos Aires

YUL Montreal Pierre Elliott Trudeau Intl - EZE Buenos Aires Ministro Pistarini

YULEZE

Montreal Pierre Elliott Trudeau Intl

Fri 16/10

7:00 a.m.-9:16 a.m.

1 stop25h 16m

Buenos Aires Ministro Pistarini

Thu 5/11

7:10 a.m.-12:15 a.m.

1 stop19h 05m

C$ 1,158

MontrealBuenos Aires

YUL Montreal Pierre Elliott Trudeau Intl - EZE Buenos Aires Ministro Pistarini

YULEZE

Montreal Pierre Elliott Trudeau Intl

Tue 10/11

12:44 p.m.-6:20 a.m.

2 stops39h 36m

Buenos Aires Ministro Pistarini

Thu 3/12

7:20 a.m.-11:58 p.m.

2 stops18h 38m

C$ 1,164

MontrealBuenos Aires

YUL Montreal Pierre Elliott Trudeau Intl - EZE Buenos Aires Ministro Pistarini

YULEZE

Montreal Pierre Elliott Trudeau Intl

Sun 15/11

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

1 stop15h 50m

Buenos Aires Ministro Pistarini

Sat 5/12

1:40 a.m.-8:35 p.m.

1 stop20h 55m

C$ 1,167

MontrealBuenos Aires

YUL Montreal Pierre Elliott Trudeau Intl - EZE Buenos Aires Ministro Pistarini

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 20/1

2:25 p.m.-9:40 a.m.

2 stops17h 15m

Buenos Aires Ministro Pistarini

Fri 12/2

11:35 p.m.-11:35 p.m.

2 stops26h 00m

C$ 1,183

MontrealBuenos Aires

YUL Montreal Pierre Elliott Trudeau Intl - EZE Buenos Aires Ministro Pistarini

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 6/1

9:28 a.m.-9:40 a.m.

2 stops22h 12m

Buenos Aires Ministro Pistarini

Sun 14/2

12:20 p.m.-11:44 a.m.

2 stops25h 24m

C$ 1,183

MontrealBuenos Aires

YUL Montreal Pierre Elliott Trudeau Intl - EZE Buenos Aires Ministro Pistarini

YULEZE

Montreal Pierre Elliott Trudeau Intl

Mon 1/2

6:00 a.m.-7:35 a.m.

2 stops23h 35m

Buenos Aires Ministro Pistarini

Sun 14/2

11:35 p.m.-5:03 p.m.

1 stop19h 28m

C$ 1,185

MontrealBuenos Aires

YUL Montreal Pierre Elliott Trudeau Intl - EZE Buenos Aires Ministro Pistarini

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 9/9

9:30 a.m.-9:45 a.m.

2 stops23h 15m

Buenos Aires Ministro Pistarini

Fri 25/9

8:10 p.m.-11:50 p.m.

1 stop28h 40m

C$ 1,188

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/8

Showing 1-10 of 46 resultsSorted by cheapest first
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Best time to book a flight from Pierre Elliott Trudeau Intl to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl Airport to Buenos Aires

What is the cheapest month to book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires?

Currently, September is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires (average of C$ 1,100). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires in December is currently the most expensive (average of C$ 1,458). 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 Pierre Elliott Trudeau Intl Airport to Buenos Aires?

Airfare is below average for this route at the moment.
Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires flights typically cost between C$ 1,110 and C$ 1,204 in September.
The cheapest round-trip price found within the last 5 days was C$ 818 on Multiple Airlines (21 Sep-6 Oct).

What’s the top layover airport for flights from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires?

Share of one-stop round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport 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 38% of one-stop itineraries from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires on Cheapflights.

What’s the cheapest layover airport for flights from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires?

Average round-trip fare for 1-stop flights from Montreal Pierre Elliott Trudeau Intl Airport 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$ 1,073.

What’s the fastest layover option from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires?

Shortest average travel time for 1-stop one-way flights from Montreal Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport to Buenos Aires?

Average layover duration for 1-stop one-way flights from Montreal Pierre Elliott Trudeau Intl Airport 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 2h 04m.

How far ahead should I book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires?

To ensure you get the cheapest price possible for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires, you should look to book at least 4 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 15 August 2026.
Read through reviews of airlines operating flights from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires, such as Copa Airlines,LATAM Airlines, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Copa Airlines
7.6
Good
1,559 reviews
Check prices

Crew

8.1

Food

6.9

Boarding

7.8

Entertainment

6.8

Comfort

7.4

Overall

7.6

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
1,559 reviews
Copa Airlines
7.6
Good
1,559 reviews
Check prices

Crew

8.1

Food

6.9

Boarding

7.8

Entertainment

6.8

Comfort

7.4

Overall

7.6

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
1,979 reviews
Copa Airlines
7.6
Good
1,559 reviews
Check prices

Crew

8.1

Food

6.9

Boarding

7.8

Entertainment

6.8

Comfort

7.4

Overall

7.6

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
10,108 reviews
Copa Airlines
7.6
Good
1,559 reviews
Check prices

Crew

8.1

Food

6.9

Boarding

7.8

Entertainment

6.8

Comfort

7.4

Overall

7.6

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
11,471 reviews
Copa Airlines
7.6
Good
1,559 reviews
Check prices

Crew

8.1

Food

6.9

Boarding

7.8

Entertainment

6.8

Comfort

7.4

Overall

7.6

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
2,536 reviews
Copa Airlines
7.6
Good
1,559 reviews
Check prices

Crew

8.1

Food

6.9

Boarding

7.8

Entertainment

6.8

Comfort

7.4

Overall

7.6

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 Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl Airport to Buenos Aires?

    There are many flights that can get you from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires in 24h 05m. Fly via Arajet, Avianca, or Delta to get the fastest option. There are 9051 km between Montreal Pierre Elliott Trudeau Intl Airport and Buenos Aires. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines flying from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires round-trip?

    Cheapflights users have booked flights from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires round-trip from C$ 581. Other airlines that can offer you cheap pricing are Arajet, from C$ 816, and Copa Airlines, from C$ 1,058. These flights start at 51% lower than the current average price 3 months from now.

  • Can I find deals for flights from Pierre Elliott Trudeau Intl to Buenos Aires that include hotel bookings?

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

  • How can I find direct flights from Pierre Elliott Trudeau Intl to Buenos Aires?

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

  • Can I find deals for business class flights from Pierre Elliott Trudeau Intl to Buenos Aires?

    Yes. Cheapflights offers flight deals from Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl Airport to Buenos Aires?

    Currently, September is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires (average of C$ 1,100). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires in December is currently the most expensive (average of C$ 1,458). 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 7 airlines flying from Pierre Elliott Trudeau Intl to Buenos Aires

Discover the top 7 airlines that operate flights from Pierre Elliott Trudeau Intl 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 15 August 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 581AverageC$ 1,157FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
ArajetCheapestC$ 816AverageC$ 1,196FlexibilityNo cancel feeOn-timeN/A
Search Arajet flights
Copa AirlinesCheapestC$ 1,058AverageC$ 1,194FlexibilityNo cancel feeOn-time70%
Search Copa Airlines flights
Air CanadaCheapestC$ 1,065AverageC$ 1,225FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
AviancaCheapestC$ 1,089AverageC$ 1,419FlexibilityNo cancel feeOn-time71%
Search Avianca flights
United AirlinesCheapestC$ 1,091AverageC$ 1,433FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LATAM AirlinesCheapestC$ 1,123AverageC$ 1,329FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Pierre Elliott Trudeau Intl to Buenos Aires?

When you search for this flight from Pierre Elliott Trudeau Intl to Buenos Aires, 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 Pierre Elliott Trudeau Intl to Buenos Aires?

Cheapflights simply makes it quick and affordable to book flights from Pierre Elliott Trudeau Intl to Buenos Aires by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Pierre Elliott Trudeau Intl to Buenos Aires with no change fees?

Need flexible booking options for your flight to Buenos Aires from Pierre Elliott Trudeau Intl? 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 Pierre Elliott Trudeau Intl to Buenos Aires become cheaper?

Yes, Cheapflights offers price alerts on Pierre Elliott Trudeau Intl to Buenos Aires 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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