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Cheap flights from Ontario to Buenos Aires from C$ 374

YYZ — BUE
23 Sep — 30 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to Buenos Aires

Enter your travel dates to find the best prices.

Cheapest flights from Ontario to Buenos Aires

Mon 2/116:45 a.m. -
2 stops28h 20m
Tue 17/1111:00 a.m. -
1 stop15h 15m
Deal found 20/8C$ 811
Wed 21/106:30 a.m. -
1 stop16h 35m
Tue 3/119:29 a.m. -
1 stop16h 21m
Deal found 22/8C$ 866
Wed 4/116:45 a.m. -
1 stop15h 20m
Thu 12/1111:00 a.m. -
1 stop15h 15m
Deal found 22/8C$ 889
Sat 17/1012:40 p.m. -
1 stop14h 30m
Thu 22/1011:00 a.m. -
1 stop13h 55m
Deal found 19/8C$ 894
Wed 30/96:30 a.m. -
1 stop16h 35m
Tue 20/1011:00 a.m. -
1 stop13h 55m
Deal found 19/8C$ 895
Wed 4/116:45 a.m. -
1 stop15h 20m
Tue 17/1111:00 a.m. -
1 stop15h 15m
Deal found 20/8C$ 900
Mon 26/106:45 a.m. -
1 stop16h 20m
Tue 3/119:29 a.m. -
1 stop16h 46m
Deal found 21/8C$ 903
Mon 26/106:45 a.m. -
1 stop16h 20m
Thu 19/1111:00 a.m. -
1 stop15h 15m
Deal found 22/8C$ 905
Mon 2/116:45 a.m. -
1 stop23h 44m
Tue 17/1111:00 a.m. -
1 stop15h 15m
Deal found 20/8C$ 910
Wed 9/97:00 a.m. -
1 stop16h 05m
Wed 14/107:30 p.m. -
2 stops27h 05m
Deal found 19/8C$ 931
Mon 19/107:00 a.m. -
1 stop16h 05m
Thu 22/1011:00 a.m. -
1 stop14h 20m
Deal found 23/8C$ 935
Fri 9/107:25 a.m. -
2 stops18h 58m
Tue 3/119:29 a.m. -
1 stop16h 21m
Deal found 23/8C$ 935

Find flight deals from Ontario to Buenos Aires

Round-trip from

C$ 811

One-way from

C$ 374

Popular in

December

Cheapest in

November

Average price

C$ 1,136

Good round-trip deal

C$ 1,470 or less
Arajet
  • Arajet
  • 2/11-17/11
  • 3 total stops
  • 43h 35m total
  • Ontario to Buenos Aires
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21/9
  • 21/9
  • 2 total stops
  • 24h 21m total
  • Ontario to Buenos Aires
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 95 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 37 potential savings vs. average RT price).
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Average for round-trip flights in August 2026
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Price to beat on a round-trip flight from Ontario to Buenos Aires (BUE).
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Ontario to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoBuenos Aires

YYZ Toronto Pearson Intl - EZE Buenos Aires Ministro Pistarini

YYZEZE

Toronto Pearson Intl

Mon 14/9

11:00 a.m.-8:00 a.m.

2 stops20h 00m

Buenos Aires Ministro Pistarini

Wed 30/9

9:00 p.m.-8:44 p.m.

2 stops24h 44m

C$ 1,067

TorontoBuenos Aires

YYZ Toronto Pearson Intl - EZE Buenos Aires Ministro Pistarini

YYZEZE

Toronto Pearson Intl

Thu 10/9

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

2 stops34h 00m

Buenos Aires Ministro Pistarini

Mon 14/9

9:00 p.m.-3:46 p.m.

2 stops19h 46m

C$ 1,067

TorontoBuenos Aires

YYZ Toronto Pearson Intl - EZE Buenos Aires Ministro Pistarini

YYZEZE

Toronto Pearson Intl

Wed 7/10

12:10 p.m.-9:40 a.m.

2 stops20h 30m

Buenos Aires Ministro Pistarini

Mon 12/10

1:10 p.m.-1:40 p.m.

2 stops25h 30m

C$ 1,101

TorontoBuenos Aires

YYZ Toronto Pearson Intl - AEP Buenos Aires Jorge Newbery

YYZAEP

Toronto Pearson Intl

Tue 24/11

6:15 p.m.-4:00 p.m.

2 stops19h 45m

Buenos Aires Jorge Newbery

Sun 6/12

8:05 p.m.-5:14 p.m.

2 stops23h 09m

C$ 1,103

TorontoBuenos Aires

YYZ Toronto Pearson Intl - AEP Buenos Aires Jorge Newbery

YYZAEP

Toronto Pearson Intl

Tue 20/10

6:33 p.m.-4:00 p.m.

2 stops20h 27m

Buenos Aires Jorge Newbery

Tue 3/11

8:05 p.m.-5:38 p.m.

2 stops23h 33m

C$ 1,110

TorontoBuenos Aires

YYZ Toronto Pearson Intl - AEP Buenos Aires Jorge Newbery

YYZAEP

Toronto Pearson Intl

Tue 20/10

6:33 p.m.-4:00 p.m.

2 stops20h 27m

Buenos Aires Jorge Newbery

Wed 4/11

8:40 a.m.-5:38 p.m.

2 stops34h 58m

C$ 1,110

TorontoBuenos Aires

YYZ Toronto Pearson Intl - AEP Buenos Aires Jorge Newbery

YYZAEP

Toronto Pearson Intl

Fri 27/11

6:15 p.m.-4:00 p.m.

2 stops19h 45m

Buenos Aires Jorge Newbery

Tue 1/12

8:05 p.m.-5:14 p.m.

2 stops23h 09m

C$ 1,121

MontrealBuenos Aires

YUL Montreal Pierre Elliott Trudeau Intl - EZE Buenos Aires Ministro Pistarini

YULEZE

Montreal Pierre Elliott Trudeau Intl

Mon 2/11

6:45 a.m.-8:29 a.m.

1 stop23h 44m

Buenos Aires Ministro Pistarini

Sat 28/11

2:45 a.m.-12:15 a.m.

1 stop23h 30m

C$ 1,154

MontrealBuenos Aires

YUL Montreal Pierre Elliott Trudeau Intl - EZE Buenos Aires Ministro Pistarini

YULEZE

Montreal Pierre Elliott Trudeau Intl

Tue 5/1

9:28 a.m.-7:35 a.m.

2 stops20h 07m

Buenos Aires Ministro Pistarini

Thu 25/2

11:35 p.m.-3:59 p.m.

2 stops18h 24m

C$ 1,165

MontrealBuenos Aires

YUL Montreal Pierre Elliott Trudeau Intl - EZE Buenos Aires Ministro Pistarini

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 6/1

9:28 a.m.-7:35 a.m.

2 stops20h 07m

Buenos Aires Ministro Pistarini

Sun 21/2

11:35 p.m.-11:51 p.m.

1 stop26h 16m

C$ 1,165

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/8

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Ontario to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Ontario with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Ontario to Buenos Aires

What is the cheapest month to book a flight from Region of Ontario to Buenos Aires?

Currently, October is the cheapest month in which you can book a flight from Region of Ontario to Buenos Aires (average of C$ 1,134). Flying from Region of Ontario to Buenos Aires in December is currently the most expensive (average of C$ 1,432). 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 ON to BUE?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to Buenos Aires as you normally would.

How much does it cost to fly round-trip from Region of Ontario to Buenos Aires?

Airfare is below average for this route at the moment.
Region of Ontario to Buenos Aires flights typically cost between C$ 1,064 and C$ 1,320 in October.
The cheapest round-trip price found within the last 5 days was C$ 866 on Arajet (21 Oct-3 Nov).

How far ahead should I book a flight from Region of Ontario to Buenos Aires?

The best time to book flights from Region of Ontario to Buenos Aires is 47 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

  • How long is the flight from Region of Ontario to Buenos Aires?

    United Airlines, Delta, and Arajet can get you from Region of Ontario to Buenos Aires in just under 20h. Your travel time can differ by up to 5h 46m. There are 8980 km between Region of Ontario and Buenos Aires. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from Region of Ontario to Buenos Aires one-way?

    For one-way options, check prices for Air Canada. According to our data, you can fly for as low as C$ 489. Users have also found prices from C$ 520 and C$ 563 on Copa Airlines and United Airlines, respectively.

  • What are the most popular routes from Region of Ontario to Buenos Aires?

    When deciding which route to take from Region of Ontario to Buenos Aires consider Montreal Pierre Elliott Trudeau Intl - Buenos Aires Ministro Pistarini, Toronto Pearson Intl - Buenos Aires Ministro Pistarini or Toronto Pearson Intl - Buenos Aires Jorge Newbery as they are the most popular.

  • What are the cheapest flights from Region of Ontario to Buenos Aires?

    While on average a flight from Region of Ontario to Buenos Aires is generally C$ 1,712, our data shows the cheapest flight currently is C$ 1,448. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - Buenos Aires Ministro Pistarini), you can expect to pay C$ 965 for that flight.

  • Can I find deals for flights from Ontario to Buenos Aires that include hotel bookings?

    Yes. In addition to deals on Ontario to Buenos Aires flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Buenos Aires?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Buenos Aires.

  • Can I find deals for business class flights from Ontario to Buenos Aires?

    Yes. Cheapflights offers flight deals from Ontario 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 Region of Ontario to Buenos Aires?

    Currently, October is the cheapest month in which you can book a flight from Region of Ontario to Buenos Aires (average of C$ 1,134). Flying from Region of Ontario to Buenos Aires in December is currently the most expensive (average of C$ 1,432). 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

Top 8 airlines flying from Ontario to Buenos Aires

AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapestC$ 559AverageC$ 1,139FlexibilityNo cancel feeOn-time70%
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ArajetCheapestC$ 751AverageC$ 1,290FlexibilityNo cancel feeOn-timeN/A
Search Arajet flights
DeltaCheapestC$ 789AverageC$ 1,250FlexibilityNo cancel feeOn-timeN/A
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LATAM AirlinesCheapestC$ 816AverageC$ 1,323FlexibilityNo cancel feeOn-time81%
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AviancaCheapestC$ 818AverageC$ 1,192FlexibilityNo cancel feeOn-time71%
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American AirlinesCheapestC$ 862AverageC$ 1,119FlexibilityNo cancel feeOn-time71%
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United AirlinesCheapestC$ 1,048AverageC$ 1,228FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 1,096AverageC$ 1,402FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

How does Cheapflights help users find flights from Ontario to Buenos Aires?

Cheapflights helps you search for flights from Ontario to Buenos Aires via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Buenos Aires?

Cheapflights helps you find that perfect flight to Buenos Aires from Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Ontario to Buenos Aires with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ontario to Buenos Aires flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Ontario to Buenos Aires become cheaper?

Yes! Start tracking prices for Ontario to Buenos Aires flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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