Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires from C$ 523

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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — BUE
20 Jan — 27 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to Buenos Aires are usually found in September or August, booked 86 days in advance, depart on a Monday or Saturday and return on a Monday

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 21 December 2025.

Mon 29/126:00 a.m.YUL - EZE
2 stops23h 20mUnited Airlines
Thu 22/111:55 p.m.EZE - YUL
2 stops40h 05mUnited Airlines
Deal found 20/12C$ 1,119
Mon 29/127:10 a.m.YUL - EZE
1 stop19h 00mCopa Airlines
Thu 22/19:16 a.m.EZE - YUL
1 stop16h 27mCopa Airlines
Deal found 20/12C$ 1,131
Mon 22/129:15 a.m.YUL - EZE
2 stops44h 05mUnited Airlines
Sun 28/1211:55 p.m.EZE - YUL
2 stops40h 05mUnited Airlines
Deal found 20/12C$ 1,169
Sat 20/126:00 a.m.YUL - EZE
2 stops23h 20mUnited Airlines
Sat 27/1210:05 p.m.EZE - YUL
2 stops23h 43mUnited Airlines
Deal found 19/12C$ 1,170
Wed 24/124:45 p.m.YUL - EZE
2 stops36h 35mUnited Airlines
Wed 31/1211:55 p.m.EZE - YUL
2 stops23h 22mUnited Airlines
Deal found 20/12C$ 1,199
Fri 26/122:13 p.m.YUL - EZE
2 stops39h 07mUnited Airlines
Tue 27/111:55 p.m.EZE - YUL
2 stops47h 22mUnited Airlines
Deal found 19/12C$ 1,240
Mon 29/126:00 a.m.YUL - EZE
2 stops25h 20mUnited Airlines
Fri 30/111:55 p.m.EZE - YUL
2 stops47h 22mUnited Airlines
Deal found 20/12C$ 1,249
Tue 23/127:00 a.m.YUL - EZE
1 stop24h 00mLATAM Airlines
Fri 2/111:55 p.m.EZE - YUL
1 stop26h 04mLATAM Airlines
Deal found 20/12C$ 1,300
Mon 29/127:00 a.m.YUL - EZE
1 stop24h 00mDelta
Thu 22/111:55 p.m.EZE - YUL
2 stops20h 42mDelta
Deal found 20/12C$ 1,312
Mon 29/128:00 a.m.YUL - AEP
2 stops21h 55mMultiple Airlines
Thu 22/15:15 p.m.AEP - YUL
2 stops32h 35mMultiple Airlines
Deal found 20/12C$ 1,498
Mon 29/128:00 a.m.YUL - AEP
2 stops21h 55mMultiple Airlines
Mon 19/11:50 p.m.AEP - YUL
2 stops21h 33mMultiple Airlines
Deal found 20/12C$ 1,682
Tue 30/127:00 a.m.YUL - AEP
2 stops27h 20mMultiple Airlines
Fri 30/15:10 p.m.AEP - YUL
1 stop27h 10mMultiple Airlines
Deal found 20/12C$ 1,750

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 21 December 2025.

Round-trip from

C$ 1,091

One-way from

C$ 523

Popular in

July

Cheapest in

September

Average price

C$ 1,395
Copa Airlines
  • Copa Airlines
  • 22/1-4/2
  • 2 total stops
  • 32h 55m total
  • Montreal to Buenos Aires
Copa Airlines
  • Copa Airlines
  • 9/3
  • 1 total stop
  • 15h 21m total
  • Montreal to Buenos Aires
Highest demand for flights based on searches. 5% potential increase in price (C$ 101 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease (C$ 32 potential savings vs. average RT price).
Average for round-trip flights in December 2025

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 21 December 2025.
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

Pierre Elliott Trudeau Intl

Fly to

Buenos Aires

Route

Depart

Return

Price

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Thu 22/1

7:35 a.m.-1:58 a.m.

1 stop16h 23m

Buenos Aires Ministro Pistarini

Tue 3/2

3:47 a.m.-11:48 p.m.

1 stop22h 01m

C$ 1,091

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Mon 12/1

7:35 a.m.-1:58 a.m.

1 stop16h 23m

Buenos Aires Ministro Pistarini

Wed 4/2

5:16 a.m.-11:48 p.m.

1 stop20h 32m

C$ 1,091

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Tue 3/2

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

2 stops22h 05m

Buenos Aires Ministro Pistarini

Sun 8/3

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

2 stops49h 12m

C$ 1,098

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 6/5

9:45 a.m.-8:00 a.m.

2 stops45h 15m

Buenos Aires Ministro Pistarini

Tue 12/5

9:00 p.m.-4:21 p.m.

2 stops20h 21m

C$ 1,100

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Mon 9/3

8:41 a.m.-1:57 a.m.

1 stop16h 16m

Buenos Aires Ministro Pistarini

Sat 28/3

5:16 a.m.-12:40 a.m.

1 stop20h 24m

C$ 1,101

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Tue 3/2

7:35 a.m.-1:04 a.m.

1 stop15h 29m

Buenos Aires Ministro Pistarini

Wed 11/2

9:16 a.m.-11:48 p.m.

1 stop16h 32m

C$ 1,101

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Mon 2/2

7:35 a.m.-4:29 a.m.

1 stop18h 54m

Buenos Aires Ministro Pistarini

Tue 10/2

9:16 a.m.-11:48 p.m.

1 stop16h 32m

C$ 1,101

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Sat 10/1

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

2 stops22h 05m

Buenos Aires Ministro Pistarini

Mon 9/2

11:55 p.m.-7:48 p.m.

2 stops21h 53m

C$ 1,102

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Fri 6/2

7:30 p.m.-9:00 a.m.

2 stops35h 30m

Buenos Aires Ministro Pistarini

Thu 12/2

11:55 p.m.-4:53 p.m.

1 stop18h 58m

C$ 1,108

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 18/2

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

1 stop24h 00m

Buenos Aires Ministro Pistarini

Wed 18/3

8:55 p.m.-11:59 p.m.

1 stop28h 04m

C$ 1,108

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/12

Showing 1-10 of 45 results
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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

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

Use this chart to determine the optimal time to book a round-trip flight from Pierre Elliott Trudeau Intl to Buenos Aires. Price data was last updated on 19 December 2025.

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 85 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.

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

Currently, February is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires (average of C$ 618). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires in March is currently the most expensive (average of C$ 1,087). 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 YUL to BUE?

Find hourly flight availability from Pierre Elliott Trudeau Intl 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 21 December 2025.

It’s typically best to fly out from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires in the morning. Doing so could potentially save you 19% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires?

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

Travelers seeking maximum savings on their Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires flight should consider departing on Wednesday at noon when fares are most often at their lowest. Wednesday evenings 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 Pierre Elliott Trudeau Intl Airport to Buenos Aires?

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.

Sao Paulo (GRU) – chosen by Cheapflights users on 45% 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.

Bogotá (BOG) is the most affordable 1-stop option, with an average round-trip price of C$ 1,050.

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 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 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 Punta Cana (PUJ) offer the fastest connection on this route, with an average layover time of 1h 57m.

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 21 December 2025.
Read through reviews of airlines operating flights from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires, such as Delta,Copa Airlines, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.1

Crew

8.5

Comfort

7.9

Overall

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Stephanie,Sep 2023

LGA - MSN

In the boarding area at La Guardia, there are charging stations for electronics but the electric outlets do not work on many of the stations.

Boarding

8.1

Crew

8.5

Comfort

7.9

Overall

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Stephanie,Sep 2023

LGA - MSN

In the boarding area at La Guardia, there are charging stations for electronics but the electric outlets do not work on many of the stations.

Boarding

8.1

Crew

8.5

Comfort

7.9

Overall

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Stephanie,Sep 2023

LGA - MSN

In the boarding area at La Guardia, there are charging stations for electronics but the electric outlets do not work on many of the stations.

Boarding

8.1

Crew

8.5

Comfort

7.9

Overall

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Stephanie,Sep 2023

LGA - MSN

In the boarding area at La Guardia, there are charging stations for electronics but the electric outlets do not work on many of the stations.

Boarding

8.1

Crew

8.5

Comfort

7.9

Overall

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Stephanie,Sep 2023

LGA - MSN

In the boarding area at La Guardia, there are charging stations for electronics but the electric outlets do not work on many of the stations.

Boarding

8.1

Crew

8.5

Comfort

7.9

Overall

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Stephanie,Sep 2023

LGA - MSN

In the boarding area at La Guardia, there are charging stations for electronics but the electric outlets do not work on many of the stations.

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 16h 23m. Fly via Copa Airlines, United Airlines, or LATAM Airlines 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$ 511. Other airlines that can offer you cheap pricing are Avianca, from C$ 518, and Delta, from C$ 577. These flights start at 58% 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, February is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires (average of C$ 618). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires in March is currently the most expensive (average of C$ 1,087). 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

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Top 6 airlines flying from Pierre Elliott Trudeau Intl to Buenos Aires

Discover the top 6 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 21 December 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 577AverageC$ 1,248FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
AviancaCheapestC$ 996AverageC$ 1,110FlexibilityNo cancel feeOn-time71%
Search Avianca flights
Copa AirlinesCheapestC$ 1,045AverageC$ 1,199FlexibilityNo cancel feeOn-time70%
Search Copa Airlines flights
ArajetCheapestC$ 1,056AverageC$ 1,183FlexibilityNo cancel feeOn-timeN/A
Search Arajet flights
Air CanadaCheapestC$ 1,066AverageC$ 1,191FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 1,083AverageC$ 1,446FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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

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Why should you use Cheapflights to find cheap flight tickets from Pierre Elliott Trudeau Intl to Buenos Aires?

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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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