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Cheap flights from Ontario to Buenos Aires from C$ 468

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 23/3. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — BUE
15 Jan — 22 Jan1
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 16 December 2025.

Mon 15/128:30 a.m.YYZ - EZE
1 stop17h 40mCopa Airlines
Tue 23/125:16 a.m.EZE - YYZ
1 stop20h 53mCopa Airlines
Deal found 14/12C$ 1,064
Tue 16/127:10 a.m.YUL - EZE
1 stop19h 00mCopa Airlines
Thu 25/122:15 a.m.EZE - YUL
1 stop23h 28mCopa Airlines
Deal found 15/12C$ 1,087
Thu 18/128:30 a.m.YYZ - EZE
1 stop17h 46mCopa Airlines
Thu 25/129:03 a.m.EZE - YYZ
1 stop17h 06mCopa Airlines
Deal found 15/12C$ 1,094
Thu 18/128:30 a.m.YYZ - EZE
1 stop17h 46mCopa Airlines
Sat 27/122:15 a.m.EZE - YYZ
1 stop23h 54mCopa Airlines
Deal found 15/12C$ 1,113
Tue 30/129:15 a.m.YUL - EZE
2 stops20h 05mUnited Airlines
Thu 22/110:05 p.m.EZE - YUL
2 stops23h 43mUnited Airlines
Deal found 15/12C$ 1,117
Tue 16/123:45 p.m.YYZ - EZE
1 stop37h 35mUnited Airlines
Fri 26/1210:05 p.m.EZE - YYZ
1 stop26h 32mUnited Airlines
Deal found 15/12C$ 1,134
Tue 16/129:15 a.m.YUL - EZE
2 stops22h 05mUnited Airlines
Tue 23/1210:05 p.m.EZE - YUL
2 stops23h 43mUnited Airlines
Deal found 15/12C$ 1,138
Sat 27/126:00 a.m.YUL - EZE
2 stops23h 20mUnited Airlines
Thu 22/110:05 p.m.EZE - YUL
2 stops23h 43mUnited Airlines
Deal found 15/12C$ 1,148
Tue 30/129:15 a.m.YUL - EZE
2 stops20h 05mUnited Airlines
Tue 20/110:05 p.m.EZE - YUL
2 stops25h 12mUnited Airlines
Deal found 15/12C$ 1,168
Tue 16/127:10 a.m.YUL - EZE
1 stop16h 48mCopa Airlines
Tue 23/125:16 a.m.EZE - YUL
1 stop20h 27mCopa Airlines
Deal found 15/12C$ 1,183
Tue 16/1212:23 p.m.YYZ - EZE
1 stop16h 57mDelta
Thu 25/1211:55 p.m.EZE - YYZ
1 stop26h 04mDelta
Deal found 15/12C$ 1,183
Wed 17/128:30 a.m.YYZ - EZE
1 stop15h 28mCopa Airlines
Wed 24/129:03 a.m.EZE - YYZ
1 stop17h 06mCopa Airlines
Deal found 16/12C$ 1,186

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 16 December 2025.

Round-trip from

C$ 976

One-way from

C$ 512

Popular in

December

Cheapest in

September

Average price

C$ 1,548
Arajet
  • Arajet
  • 8/4-24/4
  • 2 total stops
  • 31h 10m total
  • Ontario to Buenos Aires
Search Deals
Copa Airlines
  • Copa Airlines
  • 9/3
  • 1 total stop
  • 18h 29m total
  • Ontario to Buenos Aires
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 116 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 43 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 16 December 2025.
Use the filters below to find and compare flights from Ontario to Buenos Aires that are best for you.

Fly from

Ontario

Fly to

Buenos Aires

Route

Depart

Return

Price

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Tue 3/2

9:45 a.m.-9:20 a.m.

2 stops21h 35m

Buenos Aires Ministro Pistarini

Tue 10/2

10:05 p.m.-2:27 p.m.

2 stops18h 22m

C$ 1,061

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Mon 6/4

6:10 a.m.-8:00 a.m.

2 stops24h 50m

Buenos Aires Ministro Pistarini

Tue 21/4

9:00 p.m.-10:37 a.m.

2 stops38h 37m

C$ 1,068

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 1/4

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

1 stop16h 55m

Buenos Aires Ministro Pistarini

Tue 21/4

3:52 a.m.-12:40 a.m.

1 stop21h 48m

C$ 1,072

TorontoBuenos Aires

YYZ - EZE

YYZEZE

Toronto Pearson Intl

Sun 8/2

6:10 a.m.-9:20 a.m.

1 stop25h 10m

Buenos Aires Ministro Pistarini

Wed 25/2

10:05 p.m.-2:20 p.m.

1 stop18h 15m

C$ 1,073

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Wed 28/1

6:00 a.m.-9:20 a.m.

2 stops25h 20m

Buenos Aires Ministro Pistarini

Tue 10/2

10:05 p.m.-4:30 p.m.

2 stops20h 25m

C$ 1,076

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Wed 21/1

7:35 a.m.-7:57 a.m.

1 stop22h 22m

Buenos Aires Ministro Pistarini

Wed 28/1

5:16 a.m.-11:43 p.m.

1 stop20h 27m

C$ 1,079

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Tue 13/1

7:35 a.m.-7:57 a.m.

1 stop22h 22m

Buenos Aires Ministro Pistarini

Wed 28/1

5:16 a.m.-11:43 p.m.

1 stop20h 27m

C$ 1,079

TorontoBuenos Aires

YYZ - EZE

YYZEZE

Toronto Pearson Intl

Sat 21/2

8:45 a.m.-9:20 a.m.

2 stops22h 35m

Buenos Aires Ministro Pistarini

Wed 4/3

10:05 p.m.-2:01 p.m.

2 stops17h 56m

C$ 1,079

TorontoBuenos Aires

YYZ - EZE

YYZEZE

Toronto Pearson Intl

Fri 23/1

9:00 a.m.-7:20 a.m.

2 stops20h 20m

Buenos Aires Ministro Pistarini

Thu 5/2

11:55 p.m.-5:49 p.m.

2 stops19h 54m

C$ 1,079

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Tue 3/3

6:00 p.m.-7:20 a.m.

1 stop35h 20m

Buenos Aires Ministro Pistarini

Tue 10/3

8:55 p.m.-6:35 p.m.

2 stops22h 40m

C$ 1,108

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/12

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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$ 590). Flying from Region of Ontario to Buenos Aires in September is currently the most expensive (average of C$ 1,027). 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 16 December 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 21% on flights from Region of Ontario to Buenos Aires by exploring options for tickets at noon.

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, Copa Airlines, and LATAM Airlines can get you from Region of Ontario to Buenos Aires in just under 16h 55m. Your travel time can differ by up to 12h 45m. There are 9051 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 Avianca. According to our data, you can fly for as low as C$ 501. Users have also found prices from C$ 520 and C$ 521 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.

  • 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$ 590). Flying from Region of Ontario to Buenos Aires in September is currently the most expensive (average of C$ 1,027). 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

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Alternative routes for Ontario to Buenos Aires

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to Ministro Pistarini flights
Pearson Intl to Jorge Newbery flights
Pierre Elliott Trudeau Intl to Ministro Pistarini flights
Pierre Elliott Trudeau Intl to Jorge Newbery flights
Vancouver Intl to Ministro Pistarini flights
Calgary to Ministro Pistarini flights
Pearson Intl to Mendoza flights
Edmonton to Ministro Pistarini flights
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Victoria to Ministro Pistarini flights
Ottawa to Jorge Newbery flights
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Pierre Elliott Trudeau Intl to Ushuaia flights
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Pierre Elliott Trudeau Intl to El Calafate flights
Vancouver Intl to San Carlos de Bariloche flights
Pearson Intl to Puerto Iguazú flights
Pearson Intl to El Calafate flights
Pierre Elliott Trudeau Intl to San Carlos de Bariloche flights
Calgary to El Calafate flights
Pierre Elliott Trudeau Intl to Rosario flights
Pierre Elliott Trudeau Intl to Salta flights

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 16 December 2025.
AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapestC$ 303AverageC$ 1,260FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
DeltaCheapestC$ 687AverageC$ 1,104FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Copa AirlinesCheapestC$ 745AverageC$ 1,141FlexibilityNo cancel feeOn-time70%
Search Copa Airlines flights
ArajetCheapestC$ 781AverageC$ 1,110FlexibilityNo cancel feeOn-timeN/A
Search Arajet flights
AviancaCheapestC$ 1,019AverageC$ 1,257FlexibilityNo cancel feeOn-time71%
Search Avianca flights
United AirlinesCheapestC$ 1,024AverageC$ 1,230FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 1,082AverageC$ 1,315FlexibilityNo 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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