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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires from C$ 468

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
23 Aug — 30 Aug1
1 adult

Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to Buenos Aires are usually found in September or May, booked 76 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

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 18 August 2025.

Round-trip from

C$ 971

One-way from

C$ 468

Popular in

July

Cheapest in

September

Average price

C$ 1,172
LATAM Airlines
  • LATAM Airlines
  • 6/10-20/10
  • 4 total stops
  • 45h 59m total
  • Montreal to Buenos Aires
Search Deals
7/9
  • 7/9
  • 3 total stops
  • 24h 49m total
  • Montreal to Buenos Aires
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 105 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
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Find flight deals from Pierre Elliott Trudeau Intl to Buenos Aires

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 18 August 2025.

Mon 6/106:40 p.m.YUL - AEP
2 stops20h 25mLATAM Airlines
Mon 20/105:00 p.m.AEP - YUL
2 stops25h 34mLATAM Airlines
Deal found 17/8C$ 971
Mon 6/106:40 p.m.YUL - EZE
2 stops18h 15mLATAM Airlines
Mon 20/103:40 p.m.EZE - YUL
2 stops20h 51mLATAM Airlines
Deal found 17/8C$ 971
Mon 6/106:40 p.m.YUL - AEP
2 stops22h 55mLATAM Airlines
Wed 15/105:00 p.m.AEP - YUL
2 stops19h 31mLATAM Airlines
Deal found 17/8C$ 980
Tue 11/117:00 a.m.YUL - EZE
2 stops21h 20mLATAM Airlines
Thu 20/117:55 a.m.EZE - YUL
2 stops17h 58mLATAM Airlines
Deal found 17/8C$ 980
Mon 1/1212:45 p.m.YUL - AEP
2 stops25h 15mLATAM Airlines
Thu 11/125:15 p.m.AEP - YUL
2 stops25h 49mLATAM Airlines
Deal found 16/8C$ 981
Tue 11/117:00 a.m.YUL - EZE
2 stops21h 20mLATAM Airlines
Tue 25/117:55 a.m.EZE - YUL
2 stops17h 58mLATAM Airlines
Deal found 17/8C$ 981
Wed 29/107:00 a.m.YUL - AEP
2 stops23h 55mLATAM Airlines
Wed 3/125:15 p.m.AEP - YUL
2 stops20h 29mLATAM Airlines
Deal found 16/8C$ 984
Wed 3/127:00 a.m.YUL - EZE
2 stops33h 43mLATAM Airlines
Mon 15/1211:00 a.m.EZE - YUL
2 stops26h 44mLATAM Airlines
Deal found 16/8C$ 987
Tue 2/127:00 a.m.YUL - EZE
2 stops24h 35mLATAM Airlines
Wed 17/1211:00 a.m.EZE - YUL
2 stops26h 44mLATAM Airlines
Deal found 16/8C$ 993
Sun 9/116:30 p.m.YUL - AEP
2 stops22h 10mMultiple Airlines
Mon 24/118:25 p.m.AEP - YUL
2 stops21h 59mMultiple Airlines
Deal found 17/8C$ 1,007
Sun 16/116:30 p.m.YUL - EZE
2 stops30h 05mMultiple Airlines
Mon 24/117:43 p.m.EZE - YUL
2 stops17h 56mMultiple Airlines
Deal found 17/8C$ 1,007
Mon 3/118:55 a.m.YUL - AEP
2 stops21h 00mMultiple Airlines
Thu 27/116:20 p.m.AEP - YUL
2 stops19h 20mMultiple Airlines
Deal found 16/8C$ 1,009

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 18 August 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 - AEP

YULAEP

Montreal Pierre Elliott Trudeau Intl

Mon 6/10

6:40 p.m.-4:05 p.m.

2 stops20h 25m

Buenos Aires Jorge Newbery

Mon 20/10

5:00 p.m.-5:34 p.m.

2 stops25h 34m

C$ 971

MontrealBuenos Aires

YUL - AEP

YULAEP

Montreal Pierre Elliott Trudeau Intl

Mon 6/10

6:40 p.m.-6:35 p.m.

2 stops22h 55m

Buenos Aires Jorge Newbery

Wed 15/10

5:00 p.m.-11:31 a.m.

2 stops19h 31m

C$ 980

MontrealBuenos Aires

YUL - AEP

YULAEP

Montreal Pierre Elliott Trudeau Intl

Mon 9/2

12:45 p.m.-6:40 p.m.

2 stops27h 55m

Buenos Aires Jorge Newbery

Mon 16/2

12:40 p.m.-11:44 a.m.

2 stops25h 04m

C$ 980

MontrealBuenos Aires

YUL - AEP

YULAEP

Montreal Pierre Elliott Trudeau Intl

Mon 13/10

12:36 p.m.-10:30 a.m.

2 stops20h 54m

Buenos Aires Jorge Newbery

Thu 23/10

5:00 p.m.-5:34 p.m.

2 stops25h 34m

C$ 980

MontrealBuenos Aires

YUL - AEP

YULAEP

Montreal Pierre Elliott Trudeau Intl

Tue 21/10

12:36 p.m.-9:30 p.m.

2 stops31h 54m

Buenos Aires Jorge Newbery

Thu 30/10

2:55 p.m.-1:35 p.m.

2 stops23h 40m

C$ 980

MontrealBuenos Aires

YUL - AEP

YULAEP

Montreal Pierre Elliott Trudeau Intl

Mon 19/1

7:00 a.m.-2:00 p.m.

2 stops29h 00m

Buenos Aires Jorge Newbery

Mon 2/2

5:15 p.m.-5:04 p.m.

2 stops25h 49m

C$ 980

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Tue 11/11

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

2 stops21h 20m

Buenos Aires Ministro Pistarini

Thu 20/11

7:55 a.m.-11:53 p.m.

2 stops17h 58m

C$ 980

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Tue 11/11

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

2 stops21h 20m

Buenos Aires Ministro Pistarini

Tue 18/11

7:55 a.m.-11:53 p.m.

2 stops17h 58m

C$ 980

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Tue 11/11

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

2 stops21h 20m

Buenos Aires Ministro Pistarini

Tue 25/11

7:55 a.m.-11:53 p.m.

2 stops17h 58m

C$ 980

MontrealBuenos Aires

YUL - AEP

YULAEP

Montreal Pierre Elliott Trudeau Intl

Tue 7/10

12:36 p.m.-9:30 p.m.

2 stops31h 54m

Buenos Aires Jorge Newbery

Tue 14/10

5:00 p.m.-11:31 a.m.

2 stops19h 31m

C$ 981

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/8

Showing 1-10 of 40 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 8 August 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 27 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, 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$ 812). Flying from Montreal Pierre Elliott Trudeau Intl Airport 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 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 18 August 2025.

It’s typically best to fly out from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires in the afternoon. Doing so could potentially save you 6% 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.

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 49% 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$ 1,137.

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 53m.

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 18 August 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.
Delta
8.0
Very good
7,981 reviews
Check prices

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

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.
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews
Check prices

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

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.
Copa Airlines
7.5
Good
1,510 reviews
Delta
8.0
Very good
7,981 reviews
Check prices

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

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.
United Airlines
7.4
Good
8,925 reviews
Delta
8.0
Very good
7,981 reviews
Check prices

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

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.
Air Canada
7.1
Good
9,992 reviews
Delta
8.0
Very good
7,981 reviews
Check prices

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

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.
Avianca
6.7
Okay
2,407 reviews
Delta
8.0
Very good
7,981 reviews
Check prices

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

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 20h 25m. Fly via LATAM Airlines to get the fastest option. There are 9024 km between Montreal Pierre Elliott Trudeau Intl Airport and Buenos Aires.

  • 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$ 700. Other airlines that can offer you cheap pricing are Delta, from C$ 872, and Copa Airlines, from C$ 1,045. These flights start at 44% 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$ 812). Flying from Montreal Pierre Elliott Trudeau Intl Airport 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

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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 18 August 2025.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapestC$ 700AverageC$ 1,105FlexibilityNo cancel feeOn-time71%
Search Avianca flights
DeltaCheapestC$ 872AverageC$ 1,245FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Copa AirlinesCheapestC$ 1,046AverageC$ 1,303FlexibilityNo cancel feeOn-time70%
Search Copa Airlines flights
Air CanadaCheapestC$ 1,092AverageC$ 1,454FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
ArajetCheapestC$ 1,096AverageC$ 1,253FlexibilityNo cancel feeOn-timeN/A
Search Arajet flights
United AirlinesCheapestC$ 1,117AverageC$ 1,485FlexibilityNo 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?

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?

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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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