YUL - BUE

C$ 422 Find Cheap Flights from Montreal to Buenos Aires

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Montreal to Buenos Aires departing on 16/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Buenos Aires

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Montreal to Buenos Aires.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Montreal to Buenos Aires.
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Everything you should know

Cheapest round-trip
C$ 1,086
Avianca
Sun 3/5Wed 13/5
YUL - AEP • 1 stop
Cheapest one-way flights
C$ 422
Multiple Airlines
Mon 16/3
YUL - AEP • 2 stops
Top airlines
Avianca
Cheapest • from C$ 1,086 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 13% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 12% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Buenos Aires!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Montreal to Buenos Aires (YUL-BUE)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Montreal to Buenos Aires that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Montreal to Buenos Aires

Sun, 3 May - Wed, 13 May
Avianca Logo
11:00 p.m. - 5:40 a.m.
YUL
-
AEP
29h 40m
1 stop
Avianca Logo
7:00 a.m. - 9:35 p.m.
AEP
-
YUL
15h 35m
1 stop
C$ 1,086Avianca
Mon, 16 Mar - Mon, 23 Mar
Avianca Logo
6:00 a.m. - 8:20 a.m.
YUL
-
EZE
25h 20m
2 stops
Avianca Logo
9:05 p.m. - 9:17 p.m.
EZE
-
YUL
25h 12m
2 stops
C$ 1,086Avianca
Tue, 5 May - Wed, 20 May
Multiple Airlines Logo
11:00 p.m. - 9:20 p.m.
YUL
-
AEP
21h 20m
2 stops
Multiple Airlines Logo
7:00 a.m. - 9:35 p.m.
AEP
-
YUL
39h 35m
3 stops
C$ 1,088Multiple Airlines
Wed, 1 Apr - Thu, 7 May
Avianca Logo
11:00 p.m. - 5:40 a.m.
YUL
-
AEP
29h 40m
1 stop
Avianca Logo
7:00 a.m. - 9:35 p.m.
AEP
-
YUL
15h 35m
1 stop
C$ 1,089Avianca
Mon, 16 Mar - Sun, 29 Mar
Multiple Airlines Logo
11:00 p.m. - 12:30 a.m.
YUL
-
EZE
24h 30m
2 stops
Multiple Airlines Logo
7:00 p.m. - 9:35 p.m.
EZE
-
YUL
27h 35m
2 stops
C$ 1,091Multiple Airlines
Wed, 1 Apr - Thu, 7 May
Avianca Logo
11:00 p.m. - 5:40 a.m.
YUL
-
AEP
29h 40m
1 stop
Avianca Logo
7:00 a.m. - 9:35 p.m.
AEP
-
YUL
15h 35m
1 stop
C$ 1,091Avianca
Wed, 18 Feb - Thu, 30 Apr
Copa Airlines Logo
7:35 a.m. - 12:10 a.m.
YUL
-
EZE
14h 35m
1 stop
Copa Airlines Logo
9:11 a.m. - 12:40 a.m.
EZE
-
YUL
16h 29m
1 stop
C$ 1,092Copa Airlines
Mon, 16 Mar - Tue, 31 Mar
Arajet Logo
6:45 a.m. - 12:05 a.m.
YUL
-
EZE
16h 20m
1 stop
Arajet Logo
8:50 a.m. - 12:20 a.m.
EZE
-
YUL
16h 30m
1 stop
C$ 1,093Arajet
Mon, 16 Mar - Mon, 30 Mar
Multiple Airlines Logo
11:00 p.m. - 12:30 a.m.
YUL
-
EZE
24h 30m
2 stops
Multiple Airlines Logo
2:45 a.m. - 12:20 a.m.
EZE
-
YUL
22h 35m
1 stop
C$ 1,095Multiple Airlines
Mon, 16 Mar - Mon, 13 Apr
United Airlines Logo
6:00 a.m. - 8:20 a.m.
YUL
-
EZE
25h 20m
2 stops
United Airlines Logo
9:00 p.m. - 10:40 a.m.
EZE
-
YUL
38h 40m
2 stops
C$ 1,100United Airlines
Booking Insights

KAYAK's insights & trends for Montreal to Buenos Aires flights

Get data-powered insights and trends into flights from Montreal to Buenos Aires to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires is September, where tickets cost C$ 1,070 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is C$ 1,427 and C$ 1,314 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires, you should book around 3 weeks before departure, which saves you about 13% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Good to know

Low seasonJuly
Cheapest flightC$ 422
Best time to beat the crowds but there is an average 17% increase in price.
Most popular time to fly (8% more expensive on average)
Flight from Montreal to Buenos Aires Jorge Newbery

When to book flights from Montreal to Buenos Aires

Are your dates flexible? Find out the best times to travel from Montreal to Buenos Aires based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Montreal to Buenos Aires flights

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

    In the last 3 days, the lowest price for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires was C$ 422 for a one-way ticket and C$ 1,086 for a round-trip.

  • Which airports will I be using when flying from Montreal to Buenos Aires?

    On your way to Buenos Aires, you’ll fly out from Montreal Pierre Elliott Trudeau Intl. You’ll be landing in one of Buenos Aires’s 2 airports: Buenos Aires Jorge Newbery or Buenos Aires Ministro Pistarini.

  • Which aircraft models fly most regularly from Montreal to Buenos Aires?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Montreal to Buenos Aires?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Montreal and Buenos Aires, with SkyTeam being the most commonly used for this route.

  • What is the most popular layover when flying to Buenos Aires from Montreal?

    Sao Paulo is the most popular layover city among KAYAK users travelling from Montreal to Buenos Aires.

  • Which is the best airline for flights from Montreal to Buenos Aires, Delta or Copa Airlines?

    The two airlines most popular with KAYAK users for flights from Montreal to Buenos Aires are Delta and Copa Airlines. With an average price for the route of C$ 1,242 and an overall rating of 7.9, Delta is the most popular choice. Copa Airlines is also a great choice for the route, with an average price of C$ 1,229 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from Montreal to Buenos Aires?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Montreal to Buenos Aires.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Montreal to Buenos Aires?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Buenos Aires from Montreal is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Montreal to Buenos Aires?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Buenos Aires with an airline and back to Montreal with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Montreal to Buenos Aires?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Buenos Aires from Montreal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines flying from Montreal to Buenos Aires

 
See real verified KAYAK customer reviews for airlines flying from Montreal to Buenos Aires. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Montreal to Buenos Aires? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8130 reviews
7.8Entertainment
8.5Crew
7.2Food
7.9Comfort
8.1Boarding
Airline reviews

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

2.0 MediocreJulia, Jan 2026
MSP - BOS
Read more Delta reviews

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

Air travel sucks. It continues to be awful for all airlines. No shame on delta alone.

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

A 12 hour flight during the day with one real meal service - are you kidding? Also the breakfast was one of the worst and not what was listed

Flight was delayed several times. At one point, they "pulled back" 15 minutes from the delayed boarding and sent a text saying we would board sooner than previously advised. The flight then was delayed again. And when we boarded, there was an unspecified technical issue which had us waiting in the plane for about an hour.

None of the airplane features were available during the flight.

The food is terrible. The staff is wonderful. Comfort is good.

Seats comfortable, service and food very mediocre, staff not very attentive, worse than many other our flights with Delta.

My issue was with TSA agents for delta airlines. My luggage got flagged. The agent was going thru another persons first. He took 20 min to go thru hers. I asked them to bring mine closer so I could sit down . They said you can go sit it will be fine. I said I am supposed to keep my eyes on my bags at all times. The agent was meticulously unwrapping 2 gifts that the lady had and then tried to re warp it. He was trying to be kind i get it but 20 min for me to stand watching him do that was ridiculous. It was 6 am and there were a ton of travelers. Mine was flagged for some air packed tea that I bought in Turkey. My previous delta flight and 2 others before didn’t flag it. Consistency would be nice. Also on the flight the window shades were down for take off and landing - I thought that was very odd I thought they had to remain open for take off and landing.

It was beautiful easy and smooth experience. Thank you. Will definitely get Delta for my next travel.

Seats were awful. Media should have been included for such a long flight.

Horrible. No TV or any type of entertainment on board. Passwnger listening to/watching stuff on their own phone with no headphones making it noise and uncomfortable for everyone else, little/tiny food portions, old seats, useless wifi (cant access anything). Horrible exlerience especially it was a lomg distance flight with kids.

There should be a warning regarding the quality of the aircraft on the website as we reserve the tickets. There was no TV or any type of screen onboard. The wifi they offer is good for nothing. Traveling 9 hours straight with kids and no type of entetainment was horrible. I wish I had been informed prior so I could buy a ticket with another airline. The food was a joke too. A very tiny portion per passenger. They also charged $100 per checked bag. With United I used to pay $60. So, fair to say that I wont be flying Copa anymore. Their aircraft was super old, outdated, no entertainment, with nearly no onboard food.

The flight was good overall. Everything went smoothly, although the landing was a bit rough. Still, it was a pleasant experience

I always enjoy flying Copa. There are very few airlines where I can enjoy a comfortable sleep in-flight. The snacks weren't the best, but they sufficed. The in-flight entertainment was fantastic, and I crossed another movie off my watch list.

Some of the Air hostesses are not that friendly. Need improvement

Simply as follows:- First, there was no vegetarian option for the meal Second, only 2 washrooms for the entire economy class.

I liked the meatloaf the chicken was awful but the plane was on time and got there and the staff was nice.

Boarding was quick & efficient; they gave boarding groups due priority; staff & air crew were very cordial and helpful, pleasant flight.

Great experience with a crew always thinking in the passenger

It was great. There were some issues prior to takeoff. The weather was poor so we had to go through deicing, and we were delayed a bit by the pilots' concern about one of the engines, but that's aviation. The pilots handled everything with aplomb, and kept us apprised

Reliable, nice crew, I fly often on that flight and I like it all.

l really enjoy very much the flight was very pleasant

The Sears in the 800s are not too good perfect Airbus why cant the new 737 fix that

Quick and seamless boarding. No entertainment but fast Starlink wifi for this short trip and the staff was really friendly.

I dread trans-Pacific flights. They are very long. This was my first time on Universal, and it was my best crossing ever. The staff were professional, the hospitality was great, and the food was delicious. The entertainment system filled the long flight hours. I will seek out Universal flights from now onwards. 🙂

The food quality sucks. One must starve if they do not eat flesh Or wheat based products Some variety would be expected. The trivial amount of snacks and or food is inhumane

We Left Calgary 1/2 hour late and that made for a tight connection in Denver. After arriving everything was done to help us make our connection. That was a great effort. Thank You United

Efficient all round, very good crew. Short flight so the food, of course, was just snacks

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

Overall a good experience as this leg I was in Business Class. The Lounge was amazing with a view of the planes. The flight attendant spoke way to quickly when giving the information for take off and landing and it would be of no use to a first time traveler. Overall a great airline to travel on.

Smooth on-time flight but NO AC in the middle of the cabin. Business Class and the rear of the cabin were too cold but mid-cabin was stuffy and hot with virtually no air coming out of the ducts. Made for a very long and uncomfortable flight.

Air Canada’s problems are not staff related by and large, no. The problem is tiny jets between the U.S. and Canada - yes, believe it or not they are still “international” (just ask our own Mango Maniac in power in the U.S.). The little aisle is compounded by a design flaw of a “dog leg” starting at seat 12. Woe be unto you if you sit here as passengers and attendants do not have sufficient room to not hit you in the face with backpacks. One thing I will say very positively about Air Canada is you still provide pillows and blankets on transcontinental flights to all, not just the elites. Your tiny improperly designed jets are also a problem flying city to city within Canada also. One can only say you remind us of a “Jet Blue” or “Spirit” experience. Also your luggage space is downright Byzantine! We will endeavor to avoid you and use other U.S. carriers, albeit charging more.

Terrible canceled flight and lost my luggage. Flew me to Halifax. Tgat flight was delayed, had to spend night in airport chair.

The airplane has been replaced and late night layover have been extended from 3 to 7 and the only compensation was a $15 food voucher after most restaurants have been closed, not helping with children after a 18+ hour international flight

My seat was not comfortable. Flight was smooth. Regretfully we had two delays before takeoff

They are very proactive and made our boarding easy and always notified us about any changes well in advance.

This flight with a lot empty place , and I have more room, feeling comfortable.

Flight was good, breakfast could be much better. We had come from a domestic flight on the same aircraft and the domestic flight was much better regarding service compared to this international flight.

I accidentally touched a cabin steward as she passed by and she reacted harshly yelling in a loud voice “don’t touch me”. It was embarrassing and uncalled for. I would characterize a few of the cabin crew as pretentious and aloof. Not at all what is expected. That was the first leg of our trip from Montreal to Munich. The second leg from Munich to Nice was more in keeping with the service I expected.

It was delayed and I lost my connection flight to Cali and I missed my Mom's funeral

Provide free food and drinks on an international flight. Add updated head rests

Pros: we leave and arrive on time Cons: the most uncomfortable seats ever. You cant recline at all your seats. No entertainment No TVs flight attendants didn't provide even a glass of water. You have to go to back of the airplane and ask for one. I am Colombian and I remember seeing the flight attendants very neat, elegants which is or was a staple of Avianca.it was one with tennis shoes, no male up, the hair was messy... that was really odd.

Last seat of Bussines Class it does recline but passenger seating behind kept pushing since they did not have space once my seat was reclined

We waited for one hour to deboard the plane after landing. That could be better

I like the crew they're very friendly. I don't like. on five hour flight they not offered snacks. Any drink. Not even coffee

Not even water is offered on the flight. You cannot lean back on the seats and the seats are so narrow you can’t avoid rubbing elbows with the person next to you.

I couldnt recline the seat. Other than that crew was very attentive and helpful. Thsnk you

Very uncomfortable planes , poor service on the plane , take your own water so you don’t dehydrate , in a 6 hs flight they sold one time food and beverage . 1 plane was delayed 6 hs , I lost a connecting flight . Then in the way back they announce a delay of 2 hs so I had to take a different flight to arrive on time for my connecting flight . Avoid this airline .

No food, terms when selling are not clear. To pricy for the service in general

Everything you need to know for your flight from Montreal to Buenos Aires

Information on your arrival and departure airports