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Cheap flights from Ontario to Buenos Aires from C$ 298

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 26/8. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — BUE
6 Aug — 13 Aug1
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
Explore the most affordable flight options available from Ontario to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 July 2026.

Wed 23/96:30 a.m.
YYZ
-
EZE
1 stop16h 35m
Arajet
Thu 1/107:45 a.m.
EZE
-
YYZ
1 stop17h 10m
Arajet
Deal found 4/7C$ 722
Wed 9/96:30 a.m.
YYZ
-
EZE
1 stop16h 35m
Arajet
Thu 17/99:45 a.m.
EZE
-
YYZ
1 stop15h 10m
Arajet
Deal found 4/7C$ 776
Wed 23/96:30 a.m.
YYZ
-
EZE
1 stop16h 35m
Arajet
Tue 29/99:15 a.m.
EZE
-
YYZ
1 stop15h 40m
Arajet
Deal found 4/7C$ 800
Wed 23/97:00 a.m.
YUL
-
EZE
1 stop16h 05m
Arajet
Thu 1/107:45 a.m.
EZE
-
YUL
1 stop17h 35m
Arajet
Deal found 4/7C$ 847
Wed 23/96:30 a.m.
YYZ
-
EZE
1 stop16h 35m
Arajet
Thu 8/107:45 a.m.
EZE
-
YYZ
1 stop17h 10m
Arajet
Deal found 4/7C$ 881
Wed 26/87:00 a.m.
YUL
-
EZE
1 stop16h 05m
Arajet
Sun 6/98:40 a.m.
EZE
-
YUL
1 stop16h 40m
Arajet
Deal found 5/7C$ 903
Wed 23/96:30 a.m.
YYZ
-
EZE
1 stop16h 35m
Arajet
Mon 5/109:15 p.m.
EZE
-
YYZ
1 stop27h 40m
Arajet
Deal found 4/7C$ 903
Thu 17/97:45 a.m.
YYZ
-
EZE
1 stop25h 00m
Multiple Airlines
Thu 1/107:45 a.m.
EZE
-
YYZ
1 stop17h 10m
Multiple Airlines
Deal found 4/7C$ 924
Fri 25/96:30 a.m.
YYZ
-
EZE
1 stop23h 15m
Arajet
Thu 1/107:45 a.m.
EZE
-
YYZ
1 stop17h 10m
Arajet
Deal found 4/7C$ 927
Wed 2/96:30 a.m.
YYZ
-
EZE
1 stop16h 35m
Arajet
Wed 30/99:15 p.m.
EZE
-
YYZ
1 stop27h 40m
Arajet
Deal found 6/7C$ 937
Wed 23/96:30 a.m.
YYZ
-
EZE
1 stop16h 35m
Arajet
Wed 30/99:15 p.m.
EZE
-
YYZ
1 stop27h 40m
Arajet
Deal found 4/7C$ 944
Mon 24/811:01 a.m.
YUL
-
EZE
1 stop33h 24m
Aeromexico
Tue 8/911:25 p.m.
EZE
-
YUL
1 stop33h 05m
Aeromexico
Deal found 4/7C$ 971

Find flight deals from Ontario to Buenos Aires

Keep the following information in mind while searching for Ontario to Buenos Aires flight deals. Data was last updated 7 July 2026.

Round-trip from

C$ 722

One-way from

C$ 298

Popular in

December

Cheapest in

November

Average price

C$ 1,548

Good round-trip deal

C$ 1,282 or less
Arajet
  • Arajet
  • 23/9-1/10
  • 2 total stops
  • 33h 45m total
  • Ontario to Buenos Aires
Search Deals
Arajet
  • Arajet
  • 26/8
  • 1 total stop
  • 16h 05m total
  • Ontario to Buenos Aires
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 72 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Ontario to Buenos Aires (BUE).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario 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 7 July 2026.
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 - EZE

YYZEZE

Toronto Pearson Intl

Thu 17/9

3:53 p.m.-8:00 a.m.

1 stop15h 07m

Buenos Aires Ministro Pistarini

Tue 29/9

9:00 p.m.-2:24 p.m.

1 stop18h 24m

C$ 1,022

TorontoBuenos Aires

YYZ - EZE

YYZEZE

Toronto Pearson Intl

Wed 19/8

3:53 p.m.-8:00 a.m.

1 stop15h 07m

Buenos Aires Ministro Pistarini

Tue 25/8

9:00 p.m.-7:40 p.m.

2 stops23h 40m

C$ 1,022

TorontoBuenos Aires

YYZ - EZE

YYZEZE

Toronto Pearson Intl

Wed 19/8

10:15 a.m.-8:00 a.m.

2 stops20h 45m

Buenos Aires Ministro Pistarini

Thu 27/8

9:00 p.m.-5:56 p.m.

2 stops21h 56m

C$ 1,023

TorontoBuenos Aires

YYZ - EZE

YYZEZE

Toronto Pearson Intl

Tue 18/8

3:53 p.m.-8:00 a.m.

1 stop15h 07m

Buenos Aires Ministro Pistarini

Tue 25/8

9:00 p.m.-10:36 p.m.

1 stop26h 36m

C$ 1,023

TorontoBuenos Aires

YYZ - EZE

YYZEZE

Toronto Pearson Intl

Wed 19/8

7:43 p.m.-8:00 a.m.

2 stops35h 17m

Buenos Aires Ministro Pistarini

Wed 26/8

9:00 p.m.-5:56 p.m.

2 stops21h 56m

C$ 1,023

TorontoBuenos Aires

YYZ - EZE

YYZEZE

Toronto Pearson Intl

Mon 7/9

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

2 stops34h 00m

Buenos Aires Ministro Pistarini

Mon 14/9

9:00 p.m.-2:19 p.m.

2 stops18h 19m

C$ 1,023

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Mon 24/8

6:05 a.m.-8:00 a.m.

2 stops24h 55m

Buenos Aires Ministro Pistarini

Tue 8/9

9:00 p.m.-10:35 p.m.

2 stops26h 35m

C$ 1,026

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Mon 2/11

7:22 a.m.-2:52 a.m.

1 stop17h 30m

Buenos Aires Ministro Pistarini

Sun 15/11

3:40 a.m.-12:07 a.m.

1 stop22h 27m

C$ 1,082
Quickest round-trip

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 28/10

8:51 a.m.-1:11 a.m.

1 stop15h 20m

Buenos Aires Ministro Pistarini

Wed 11/11

8:56 a.m.-12:07 a.m.

1 stop17h 11m

C$ 1,085

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 11/11

7:22 a.m.-3:34 a.m.

1 stop18h 12m

Buenos Aires Ministro Pistarini

Tue 8/12

12:07 a.m.-12:06 a.m.

1 stop25h 59m

C$ 1,102

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/7

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
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 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$ 257). Flying from Region of Ontario to Buenos Aires in December is currently the most expensive (average of C$ 2,038). 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?

Find hourly flight availability from Ontario 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 7 July 2026.

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?

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 56 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

Find useful and relevant information for your journey from Ontario 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 Region of Ontario to Buenos Aires?

    United Airlines, Lufthansa, and Copa Airlines can get you from Region of Ontario to Buenos Aires in just under 15h 07m. Your travel time can differ by up to 9h 48m. 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$ 505. Users have also found prices from C$ 537 and C$ 581 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 Toronto Pearson Intl - Buenos Aires Ministro Pistarini, Toronto Pearson Intl - Buenos Aires Jorge Newbery or Montreal Pierre Elliott Trudeau Intl - Buenos Aires Ministro Pistarini 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$ 1,463, our data shows the cheapest flight currently is C$ 1,267. When looking at the most popular route, (Toronto Pearson Intl - Buenos Aires Ministro Pistarini), you can expect to pay C$ 655 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$ 257). Flying from Region of Ontario to Buenos Aires in December is currently the most expensive (average of C$ 2,038). 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 8 airlines flying from Ontario to Buenos Aires

Discover the top 8 airlines that operate flights from Ontario 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 7 July 2026.
AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapestC$ 313AverageC$ 1,302FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
Copa AirlinesCheapestC$ 746AverageC$ 1,176FlexibilityNo cancel feeOn-time70%
Search Copa Airlines flights
American AirlinesCheapestC$ 787AverageC$ 1,126FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
ArajetCheapestC$ 807AverageC$ 1,333FlexibilityNo cancel feeOn-timeN/A
Search Arajet flights
DeltaCheapestC$ 815AverageC$ 1,290FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
AviancaCheapestC$ 844AverageC$ 1,236FlexibilityNo cancel feeOn-time71%
Search Avianca flights
United AirlinesCheapestC$ 1,082AverageC$ 1,273FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 1,132AverageC$ 1,381FlexibilityNo cancel feeOn-time67%
Search Air Canada 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 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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