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Cheap flights from Ontario to Buenos Aires from C$ 320

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.
YYZ — BUE
21 Apr — 28 Apr1
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 22 March 2026.

Sat 28/1110:52 a.m.
YYZ
-
EZE
1 stop14h 53m
Arajet
Sun 13/128:40 a.m.
EZE
-
YYZ
1 stop17h 10m
Arajet
Deal found 17/3C$ 1,026
Sat 29/812:40 p.m.
YYZ
-
EZE
1 stop14h 30m
Arajet
Tue 20/1011:00 a.m.
EZE
-
YYZ
1 stop13h 55m
Arajet
Deal found 21/3C$ 1,048
Wed 19/86:30 a.m.
YYZ
-
EZE
1 stop16h 35m
Arajet
Fri 25/99:15 p.m.
EZE
-
YYZ
1 stop15h 25m
Arajet
Deal found 19/3C$ 1,055
Wed 26/87:00 a.m.
YUL
-
EZE
1 stop16h 05m
Arajet
Thu 22/1011:00 a.m.
EZE
-
YUL
1 stop14h 20m
Arajet
Deal found 21/3C$ 1,065
Wed 28/106:45 a.m.
YUL
-
EZE
1 stop16h 20m
Arajet
Thu 19/1111:00 a.m.
EZE
-
YUL
1 stop15h 15m
Arajet
Deal found 19/3C$ 1,067
Tue 17/1112:14 p.m.
YYZ
-
EZE
2 stops28h 07m
LATAM Airlines
Mon 7/1210:15 p.m.
EZE
-
YYZ
1 stop21h 11m
LATAM Airlines
Deal found 22/3C$ 1,074
Tue 12/58:55 a.m.
YYZ
-
EZE
1 stop14h 30m
Avianca
Tue 19/54:50 p.m.
EZE
-
YYZ
1 stop15h 30m
Avianca
Deal found 21/3C$ 1,081
Sat 29/81:15 p.m.
YUL
-
EZE
1 stop13h 55m
Arajet
Thu 22/1011:00 a.m.
EZE
-
YUL
1 stop14h 20m
Arajet
Deal found 21/3C$ 1,082
Sat 12/912:40 p.m.
YYZ
-
EZE
1 stop14h 30m
Arajet
Fri 18/99:15 p.m.
EZE
-
YYZ
1 stop15h 25m
Arajet
Deal found 22/3C$ 1,087
Mon 6/411:00 p.m.
YUL
-
EZE
1 stop15h 40m
Avianca
Wed 22/47:10 a.m.
EZE
-
YUL
1 stop15h 25m
Avianca
Deal found 20/3C$ 1,088
Mon 4/58:55 a.m.
YYZ
-
EZE
1 stop14h 30m
Avianca
Mon 25/54:50 p.m.
EZE
-
YYZ
1 stop15h 30m
Avianca
Deal found 20/3C$ 1,095
Thu 16/48:55 a.m.
YYZ
-
EZE
1 stop14h 30m
Avianca
Fri 1/54:50 p.m.
EZE
-
YYZ
1 stop15h 30m
Avianca
Deal found 20/3C$ 1,096

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 22 March 2026.

Round-trip from

C$ 1,048

One-way from

C$ 320

Popular in

December

Cheapest in

September

Average price

C$ 1,130

Good round-trip deal

C$ 1,147 or less
Arajet
  • Arajet
  • 29/8-20/10
  • 2 total stops
  • 28h 25m total
  • Ontario to Buenos Aires
Search Deals
Arajet
  • Arajet
  • 10/6
  • 1 total stop
  • 16h 05m total
  • Ontario to Buenos Aires
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 131 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 22 March 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 10/9

8:30 a.m.-2:30 a.m.

1 stop17h 00m

Buenos Aires Ministro Pistarini

Thu 24/9

5:25 a.m.-1:13 a.m.

1 stop20h 48m

C$ 1,097

TorontoBuenos Aires

YYZ - AEP

YYZAEP

Toronto Pearson Intl

Thu 16/4

8:55 a.m.-5:40 a.m.

1 stop19h 45m

Buenos Aires Jorge Newbery

Fri 1/5

7:00 a.m.-11:30 p.m.

1 stop17h 30m

C$ 1,117

TorontoBuenos Aires

YYZ - AEP

YYZAEP

Toronto Pearson Intl

Sun 19/4

8:55 a.m.-5:40 a.m.

1 stop19h 45m

Buenos Aires Jorge Newbery

Mon 27/4

7:00 a.m.-11:30 p.m.

1 stop17h 30m

C$ 1,121

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Thu 30/4

8:35 a.m.-2:30 a.m.

1 stop16h 55m

Buenos Aires Ministro Pistarini

Wed 13/5

9:02 a.m.-12:40 a.m.

1 stop16h 38m

C$ 1,121

TorontoBuenos Aires

YYZ - EZE

YYZEZE

Toronto Pearson Intl

Mon 27/4

8:55 a.m.-5:40 a.m.

1 stop19h 45m

Buenos Aires Ministro Pistarini

Tue 12/5

4:50 p.m.-7:20 a.m.

1 stop15h 30m

C$ 1,137

TorontoBuenos Aires

YYZ - EZE

YYZEZE

Toronto Pearson Intl

Sun 16/8

8:30 a.m.-4:21 a.m.

1 stop18h 51m

Buenos Aires Ministro Pistarini

Sat 29/8

3:48 a.m.-1:13 a.m.

1 stop22h 25m

C$ 1,139
Quickest round-trip

TorontoBuenos Aires

YYZ - EZE

YYZEZE

Toronto Pearson Intl

Thu 7/5

12:55 a.m.-3:40 p.m.

1 stop13h 45m

Buenos Aires Ministro Pistarini

Sun 10/5

4:50 p.m.-7:20 a.m.

1 stop15h 30m

C$ 1,139

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Mon 6/4

8:35 a.m.-2:30 a.m.

1 stop16h 55m

Buenos Aires Ministro Pistarini

Tue 21/4

9:11 a.m.-12:40 a.m.

1 stop16h 29m

C$ 1,162

TorontoBuenos Aires

YYZ - AEP

YYZAEP

Toronto Pearson Intl

Mon 27/4

8:55 a.m.-5:40 a.m.

1 stop19h 45m

Buenos Aires Jorge Newbery

Tue 12/5

5:45 a.m.-7:20 a.m.

2 stops26h 35m

C$ 1,177

TorontoBuenos Aires

YYZ - EZE

YYZEZE

Toronto Pearson Intl

Wed 27/5

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

1 stop15h 07m

Buenos Aires Ministro Pistarini

Thu 30/7

9:00 p.m.-7:37 p.m.

2 stops23h 37m

C$ 1,185

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/3

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, December is the cheapest month in which you can book a flight from Region of Ontario to Buenos Aires (average of C$ 589). Flying from Region of Ontario to Buenos Aires in July is currently the most expensive (average of C$ 1,036). 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 22 March 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?

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?

    Copa Airlines, Avianca, and United Airlines can get you from Region of Ontario to Buenos Aires in just under 15h 07m. Your travel time can differ by up to 4h 38m. 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 Copa Airlines. According to our data, you can fly for as low as C$ 506. Users have also found prices from C$ 508 and C$ 539 on Air Canada 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, Montreal Pierre Elliott Trudeau Intl - Buenos Aires Jorge Newbery or Toronto Pearson 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$ 1,566, our data shows the cheapest flight currently is C$ 1,147. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - Buenos Aires Ministro Pistarini), you can expect to pay C$ 1,076 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, December is the cheapest month in which you can book a flight from Region of Ontario to Buenos Aires (average of C$ 589). Flying from Region of Ontario to Buenos Aires in July is currently the most expensive (average of C$ 1,036). 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 7 airlines flying from Ontario to Buenos Aires

Discover the top 7 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 22 March 2026.
AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapestC$ 302AverageC$ 1,318FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
United AirlinesCheapestC$ 588AverageC$ 1,229FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Copa AirlinesCheapestC$ 732AverageC$ 1,109FlexibilityNo cancel feeOn-time70%
Search Copa Airlines flights
ArajetCheapestC$ 779AverageC$ 1,075FlexibilityNo cancel feeOn-timeN/A
Search Arajet flights
DeltaCheapestC$ 786AverageC$ 1,245FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
AviancaCheapestC$ 884AverageC$ 1,178FlexibilityNo cancel feeOn-time71%
Search Avianca flights
Air CanadaCheapestC$ 1,074AverageC$ 1,325FlexibilityNo 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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