YUL - BUE

C$ 486 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 19/1. 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

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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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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

Mon, 27 Oct - Mon, 10 Nov
Avianca Logo
11:00 p.m. - 3:50 p.m.YUL-EZE
15h 50m1 stop
Avianca Logo
7:35 a.m. - 8:35 p.m.EZE-YUL
15h 00m1 stop
C$ 1,051Avianca
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Wed, 12 Nov - Wed, 19 Nov
Avianca Logo
10:00 p.m. - 3:50 p.m.YUL-EZE
15h 50m1 stop
Avianca Logo
7:35 a.m. - 8:35 p.m.EZE-YUL
15h 00m1 stop
C$ 1,057Avianca
Find Deal
Mon, 27 Oct - Mon, 10 Nov
United Airlines Logo
6:00 a.m. - 6:20 a.m.YUL-EZE
23h 20m2 stops
United Airlines Logo
11:55 p.m. - 9:42 p.m.EZE-YUL
23h 47m2 stops
C$ 1,064United Airlines
Find Deal
Wed, 12 Nov - Mon, 1 Dec
United Airlines Logo
9:15 a.m. - 9:20 a.m.YUL-EZE
22h 05m2 stops
United Airlines Logo
11:55 p.m. - 7:48 p.m.EZE-YUL
21h 53m2 stops
C$ 1,069United Airlines
Find Deal
Mon, 27 Oct - Mon, 10 Nov
Air Canada Logo
10:30 p.m. - 3:10 p.m.YUL-EZE
39h 40m2 stops
Air Canada Logo
4:45 p.m. - 6:10 a.m.EZE-YUL
15h 25m1 stop
C$ 1,075Air Canada
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Mon, 10 Nov - Sun, 23 Nov
Copa Airlines Logo
7:10 a.m. - 7:59 a.m.YUL-EZE
22h 49m1 stop
Copa Airlines Logo
3:57 a.m. - 11:43 p.m.EZE-YUL
21h 46m1 stop
C$ 1,080Copa Airlines
Find Deal
Tue, 21 Oct - Fri, 7 Nov
Air Canada Logo
10:40 p.m. - 2:30 p.m.YUL-EZE
14h 50m1 stop
Air Canada Logo
4:45 p.m. - 6:10 a.m.EZE-YUL
15h 25m1 stop
C$ 1,085Air Canada
Find Deal
Tue, 11 Nov - Fri, 21 Nov
Delta Logo
12:45 p.m. - 10:15 a.m.YUL-EZE
19h 30m2 stops
Delta Logo
8:55 p.m. - 1:30 p.m.EZE-YUL
18h 35m1 stop
C$ 1,109Delta
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Wed, 29 Oct - Tue, 2 Dec
Copa Airlines Logo
8:41 a.m. - 1:00 a.m.YUL-EZE
15h 19m1 stop
Copa Airlines Logo
3:41 a.m. - 11:43 p.m.EZE-YUL
22h 02m1 stop
C$ 1,120Copa Airlines
Find Deal
Tue, 28 Oct - Thu, 20 Nov
Delta Logo
12:55 p.m. - 9:00 a.m.YUL-EZE
19h 05m2 stops
Delta Logo
8:55 p.m. - 11:40 a.m.EZE-YUL
16h 45m1 stop
C$ 1,154Delta
Find Deal

Everything you should know

Top airlines
Avianca
Cheapest • from C$ 1,051 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
September
Cheapest • 13% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
C$ 1,051
Overall average: C$ 1,230
Avianca
Mon 27/10Mon 10/11
YUL - EZE • 1 stop
Cheapest one-way flights
C$ 486
Multiple Airlines
Mon 19/1
YUL - AEP • 2 stops
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Buenos Aires!
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’s the cheapest day of the week to fly from Montreal to Buenos Aires?

The average price of all round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to Buenos Aires clicked on KAYAK for each day over the last 12 months.

When flying from Montreal to Buenos Aires, you should consider leaving on a Monday and avoid Wednesdays if you are looking for the best rates. For your return to Montreal, you’ll find the best rates on Mondays and the most expensive ones on Sundays.

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$ 1,098 (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$ 1,471 and C$ 1,462 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 1 week before departure. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.

Good to know

Low seasonJune
Cheapest flightC$ 486
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly (16% 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$ 351 for a one-way ticket and C$ 759 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?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Montreal and Buenos Aires, with Star Alliance 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$ 1,249 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$ 1,316 and an overall rating of 7.6.

  • 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 7954 reviews
7.9Comfort
8.5Crew
8.2Boarding
7.9Entertainment
7.3Food
Airline reviews

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

10.0 ExcellentAnonymous, Aug 2025YYC - MSP
Read more Delta reviews

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

De planning was an absolute mess. We were never told that we weren’t at the gate and that we had to go down unstable stairs and then hop on a bus. People were falling, we couldn’t tell who was in charge. Overall terrible communication that ended up leaving a bad impression at the very end of the experience.

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

Crew was excellent. Comfort seats not as nice as other kinds of planes.

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Overall, aside from the baggage issue, it was as good as one expects.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

After I checked in, I realized we had no seat assignment. It said they would be assigned at the gate. This was really frustrating because I usually use a lounge before flights, but I couldn't because I had to be at the gate to ensure we got our seat assignments. The gate agent arrived an hour before the flight left. I was the first one up to ask about seat assignments. She told us to wait for names to be called. Dozens of other passengers were paged, but we were not. Finally, I asked my husband to ask. He went up and was also told to wait. About 10 minutes later, they called for boarding. We still had not been told our seats. We went back to the desk and they were in a panic, saying we actually weren't on that flight. Then they made an announcement telling the stand by passengers to not board (in case we needed their seats). It was so stressful and unprofessional. Finally they gave us our seats. I have no idea what happened and why the two desk agents seemed to have conflicting ideas about our seats, whether we were on that flight etc.

Take this flight once or twice a month. Just don’t cut it from the schedule.

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Cops Airlines is fantastic! The level of care and professionalism provided by the entire crew was top rate.

horrible service, food was an embarrassment, no charging for cellphones, stay away

the food served was an embarrassment. No connection for charging the cellphone... What a crappy airline.

Great experience with a crew always thinking in the passenger

The flighr attandants were very rude they ignored me didnt offer me anything to drink throughoit the 4 hour flight i feel i was targeted and ignored because i was a darkskin latino man.

I selected first class expecting excetional service. It was mediocre at best. The food service was cold, meal choices was poor and on one leg they did provide dessert. I did enjoy the lay day seat but the movies were old and nothing current. Boarding the plane is always hot. So boarding is quite warm until your in the air. I took a small personal air fan. Update the meals and movies.

Did upgrade, travel in business it was great (more room I could sleep)

Had to go through security at the gate again. Had to take off shoes and go through the whole thing again even though we have global entry. They asked us to check in items bought at duty free during our layover and since we checked our luggage at the original departure airport, they forced us to check in a small backpack. None of this ever happened with other airlines. In addition, no vegetarian food option and no snacks during a 7 hr flight. Luggage limits are unusually small. This is unacceptable. Will NEVER fly Copa again and will tell friends and family to avoid this airline.

We had a five hour layover in the way home from Colombia. I read the "bout your flight" email carefully before we checked bags. We had to go through security right at the gate. Almost lost our ground coffee because that airport only allows 16 ounce of coffee and we had 18. I've been to 48 countries and never heard of a coffee restriction. I can't follow a rule I don't know about. I requested they bring our coffee to our checked luggage. Instead tey gate checked our bag for free. Back to planning transfers in Dallas I guess

Tell people to remain in their seats during the meal/beverage distribution. Enforce boarding by group numbers. No one was checking. Tell people to turn their electronics speakers off. Bigger cups for drinks.

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

My flight was delayed about 1 1/2 hours in Chicago, but other then that it was a good flight.

The experience was great, the crew was very polite and hospitable. I will definitely make if my go to airlines.

United could have one single once of customer service. No human United employee would help me with the invalid mileage plus number, they said I had to speak with the computer.

It was all good flight was on time, service was good I enjoyed a few movies and everything was smooth

Efficient, calm when things were delayed and kept us regularly informed of what was happening.

Airbus plane, nice and polite staff, entertainment even as it was a short flight.

Very nice and clean plane. Transit time between flights was tight though

Our flights got changed from United to Air Canada and our purchased seats did not get transferred so we had to pay for seats twice. I brought it up with Air Canada and they stated I had to go back and chase it with United. The united seats were $21 Canadian each and Air Canada were $56 each so we have paid $77 for each seat. Very unhappy

So far so good but food and entertainment are not available for this flight

1 hour late No hot drinks No restroom in the back of the plane

I did the posting for 45 years. I just retired. I’m the only seat in the plane but didn’t have any phone. It has to be mine so imagine seeing 13 hours on the flat seat with a belt that didn’t close all the rest was OK.

I had wonderful wheelchair assistance through the Montreal airport onto the flight. Air Canada was excellent in this both at the Fredericton airport and the Montreal one where an attendant helped us through customs as well as transport and baggage security.

Flight was cancelled last minute due to Air Canada strike leaving us stranded and having to stressfully find a way home that cost hundreds of dollars in excess cost added to the trip. Having just experienced our mother's funeral service, this was not a good way to end our trip.

They went on strike before time and screwed us big time. Which is not fair. We respect their planned strike but why they went on strike ahead of time ??? Poor garbage management

Premium Economy is best if you can't get upgraded to Business.. Not as good to sleep for red-eye flights, but does the job. More space for your legs and arms.. The food is also better and the service is almost like business.

Awful. As we were boarding we were told the flight was cancelled. Then had to stand in a queue for 3 hours to talk to someone at the kiosk of Air Canada. They were not helpful at all. No empathy. My issue is not with them striking but the total disregard for the chaos and distress late notice caused. No thought on the impact this has caused.

Horrible, experience, 5 hours delay, they changed gates 3 times, the last one we had to wait for 1::30 hre for the door to open to get to that gate. 0 apologies from Air Canada, they don’t care at all about their passengers

I had a very disappointing experience with customer service. I was suffering from a severe viral infection that included a rash and persistent cough, leaving me unable to even sit upright. Given the circumstances, I requested travel credits from Canada Air, explaining the potential health risk to others onboard. However, the airline showed no concern for my condition and stated they were not in a position to make decisions based on health considerations. Despite my illness, I received no support or flexibility. Ultimately, I chose to forgo my flight due to their lack of responsiveness. It’s unfortunate that airlines like this operate without prioritizing passenger health and safety.

On-time boarding, departure, and flight. Electronic notifications about bags for the whole of their own journey too - from when they got accepted into the system through to being loaded onto the plane and then finally being disgorged onto the right carousel. That was an excellent feature.

The usb plugs for charging your phone didn’t work, the seats were coarse and hard. Not very comfortable. No inflight WiFi

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 .

The check in is the only positive thing in Avianca. The seat is the most uncomfortable I have traveled, the distance is minimal.

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

The chicken that was served in business class was cold!

Flight to Bogotá delayed by 3 h Missed connection from Bogotá to Guayaquil. Avianca unable to bring us to Baltra on time Overall delay 36h. We missed boat departure from galagos. Overall 10 day trip needed to be cancelled. Avianca was completely un-professional.

Business class seats did not lie flat. There was only powdered milk for your coffee....in Business Class!! Food was good.

The seats were very uncomfortable. I would have upgrade or got different flight if I knew. I usually sleep in the plane but I couldn’t sleep at all. Very uncomfortable. Also no food or drink everything was to purchase, and that’s u usual for international flight.

please see previous response; it covers the whole travel trajectory.

Horrible. I have been trying to speak to a representative to know why I was over charged but I get redirected to AI Vianca everytime with no results. Is there an agency that oversees airline gouging? I will never fly or recommend Avianca to anyone not that you care.

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