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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — BUE
19 Feb — 26 Feb1
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 20 January 2026.

Wed 29/46:10 a.m.
YUL
-
EZE
2 stops24h 50m
United Airlines
Mon 18/59:00 p.m.
EZE
-
YUL
2 stops25h 26m
United Airlines
Deal found 18/1C$ 1,087
Sun 8/32:13 p.m.
YUL
-
EZE
2 stops41h 07m
United Airlines
Tue 24/39:05 p.m.
EZE
-
YUL
2 stops19h 11m
United Airlines
Deal found 19/1C$ 1,090
Fri 1/56:10 a.m.
YUL
-
EZE
2 stops24h 50m
United Airlines
Wed 13/59:00 p.m.
EZE
-
YUL
2 stops38h 40m
United Airlines
Deal found 19/1C$ 1,092
Tue 14/410:55 p.m.
YUL
-
EZE
1 stop14h 35m
Multiple Airlines
Wed 29/49:15 p.m.
EZE
-
YUL
1 stop28h 05m
Multiple Airlines
Deal found 19/1C$ 1,095
Sun 3/56:10 a.m.
YUL
-
EZE
2 stops24h 50m
United Airlines
Sun 17/59:00 p.m.
EZE
-
YUL
2 stops25h 26m
United Airlines
Deal found 19/1C$ 1,097
Wed 18/36:45 a.m.
YUL
-
EZE
1 stop16h 20m
Arajet
Thu 9/411:00 a.m.
EZE
-
YUL
1 stop14h 20m
Arajet
Deal found 18/1C$ 1,098
Mon 19/17:35 a.m.
YUL
-
EZE
1 stop15h 29m
Copa Airlines
Sun 25/12:27 a.m.
EZE
-
YUL
1 stop23h 16m
Copa Airlines
Deal found 18/1C$ 1,099
Fri 13/38:41 a.m.
YUL
-
EZE
1 stop22h 14m
Copa Airlines
Sun 29/32:52 p.m.
EZE
-
YUL
1 stop34h 48m
Copa Airlines
Deal found 18/1C$ 1,101
Sun 8/37:00 a.m.
YUL
-
EZE
1 stop23h 10m
American Airlines
Tue 24/38:35 p.m.
EZE
-
YUL
2 stops18h 10m
American Airlines
Deal found 18/1C$ 1,102
Fri 1/511:10 a.m.
YUL
-
EZE
2 stops26h 20m
Air Canada
Sat 16/54:35 p.m.
EZE
-
YUL
2 stops24h 46m
Air Canada
Deal found 18/1C$ 1,104
Tue 24/36:00 a.m.
YUL
-
EZE
2 stops25h 20m
United Airlines
Tue 7/49:00 p.m.
EZE
-
YUL
2 stops25h 26m
United Airlines
Deal found 20/1C$ 1,106
Tue 27/106:15 p.m.
YUL
-
AEP
2 stops23h 15m
LATAM Airlines
Tue 10/118:05 p.m.
AEP
-
YUL
2 stops29h 46m
LATAM Airlines
Deal found 19/1C$ 1,113

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 20 January 2026.

Round-trip from

C$ 1,087

One-way from

C$ 335

Popular in

July

Cheapest in

September

Average price

C$ 1,324
United Airlines
  • United Airlines
  • 29/4-18/5
  • 4 total stops
  • 50h 16m total
  • Montreal to Buenos Aires
Search Deals
Arajet
  • Arajet
  • 10/6
  • 1 total stop
  • 16h 20m total
  • Montreal to Buenos Aires
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 81 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 20 January 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

Pierre Elliott Trudeau Intl

Fly to

Buenos Aires

Route

Depart

Return

Price

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 29/4

6:10 a.m.-8:00 a.m.

2 stops24h 50m

Buenos Aires Ministro Pistarini

Wed 13/5

9:00 p.m.-10:40 a.m.

2 stops38h 40m

C$ 1,087

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Sun 8/3

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

2 stops23h 20m

Buenos Aires Ministro Pistarini

Tue 24/3

9:05 p.m.-3:16 p.m.

2 stops19h 11m

C$ 1,090

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Sun 3/5

6:10 a.m.-8:00 a.m.

2 stops48h 50m

Buenos Aires Ministro Pistarini

Mon 18/5

9:00 p.m.-9:26 p.m.

2 stops25h 26m

C$ 1,092

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 4/3

6:00 a.m.-9:20 a.m.

2 stops25h 20m

Buenos Aires Ministro Pistarini

Thu 26/3

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

2 stops25h 12m

C$ 1,092

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Fri 1/5

6:10 a.m.-8:00 a.m.

2 stops24h 50m

Buenos Aires Ministro Pistarini

Wed 13/5

9:00 p.m.-10:40 a.m.

2 stops38h 40m

C$ 1,092

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Mon 4/5

6:35 p.m.-8:00 a.m.

2 stops36h 25m

Buenos Aires Ministro Pistarini

Sun 17/5

9:00 p.m.-9:26 p.m.

2 stops25h 26m

C$ 1,092

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Sun 3/5

6:35 p.m.-8:00 a.m.

2 stops36h 25m

Buenos Aires Ministro Pistarini

Wed 13/5

9:00 p.m.-10:40 a.m.

2 stops38h 40m

C$ 1,092

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Sat 2/5

6:35 p.m.-8:00 a.m.

2 stops36h 25m

Buenos Aires Ministro Pistarini

Mon 18/5

9:00 p.m.-9:26 p.m.

2 stops25h 26m

C$ 1,092

MontrealBuenos Aires

YUL - AEP

YULAEP

Montreal Pierre Elliott Trudeau Intl

Sat 18/4

7:40 a.m.-5:40 a.m.

2 stops21h 00m

Buenos Aires Jorge Newbery

Mon 27/4

7:00 a.m.-10:05 p.m.

1 stop16h 05m

C$ 1,247

MontrealBuenos Aires

YUL - AEP

YULAEP

Montreal Pierre Elliott Trudeau Intl

Sat 18/4

12:46 p.m.-2:50 p.m.

2 stops25h 04m

Buenos Aires Jorge Newbery

Mon 27/4

5:05 p.m.-5:34 p.m.

2 stops25h 29m

C$ 1,251

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/1

Showing 1-10 of 36 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 16 January 2026.

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, May is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires (average of C$ 614). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires in December is currently the most expensive (average of C$ 1,090). 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’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 43% 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$ 1,052.

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 20 January 2026.
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
7.9
Good
8,080 reviews
Check prices

Crew

8.5

Food

7.2

Comfort

7.9

Entertainment

7.8

Overall

7.9

Boarding

8.1

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
7.9
Good
8,080 reviews
Delta
7.9
Good
8,080 reviews
Check prices

Crew

8.5

Food

7.2

Comfort

7.9

Entertainment

7.8

Overall

7.9

Boarding

8.1

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
7.6
Good
1,559 reviews
Delta
7.9
Good
8,080 reviews
Check prices

Crew

8.5

Food

7.2

Comfort

7.9

Entertainment

7.8

Overall

7.9

Boarding

8.1

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
9,183 reviews
Delta
7.9
Good
8,080 reviews
Check prices

Crew

8.5

Food

7.2

Comfort

7.9

Entertainment

7.8

Overall

7.9

Boarding

8.1

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
10,637 reviews
Delta
7.9
Good
8,080 reviews
Check prices

Crew

8.5

Food

7.2

Comfort

7.9

Entertainment

7.8

Overall

7.9

Boarding

8.1

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
6.6
Okay
2,495 reviews
Delta
7.9
Good
8,080 reviews
Check prices

Crew

8.5

Food

7.2

Comfort

7.9

Entertainment

7.8

Overall

7.9

Boarding

8.1

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 21h. Fly via United Airlines, Avianca, or LATAM Airlines to get the fastest option. There are 9024 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$ 521. Other airlines that can offer you cheap pricing are Delta, from C$ 581, and Copa Airlines, from C$ 815. These flights start at 57% 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, May is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires (average of C$ 614). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires in December is currently the most expensive (average of C$ 1,090). 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 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 20 January 2026.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapestC$ 521AverageC$ 1,121FlexibilityNo cancel feeOn-time71%
Search Avianca flights
DeltaCheapestC$ 581AverageC$ 1,263FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Copa AirlinesCheapestC$ 815AverageC$ 1,198FlexibilityNo cancel feeOn-time70%
Search Copa Airlines flights
ArajetCheapestC$ 927AverageC$ 1,190FlexibilityNo cancel feeOn-timeN/A
Search Arajet flights
Air CanadaCheapestC$ 1,065AverageC$ 1,188FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 1,090AverageC$ 1,455FlexibilityNo 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 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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