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Cheap flights from Ontario to Buenos Aires from C$ 448

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 8/7. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — BUE
24 Jun — 1 Jul1
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 25 May 2026.

Mon 8/68:30 a.m.
YYZ
-
EZE
1 stop18h 45m
Copa Airlines
Wed 24/69:02 a.m.
EZE
-
YYZ
1 stop29h 26m
Copa Airlines
Deal found 24/5C$ 691
Thu 4/68:30 a.m.
YYZ
-
EZE
1 stop18h 45m
Copa Airlines
Wed 17/69:02 a.m.
EZE
-
YYZ
1 stop17h 11m
Copa Airlines
Deal found 20/5C$ 692
Tue 9/68:30 a.m.
YYZ
-
EZE
1 stop19h 00m
Copa Airlines
Tue 23/62:17 a.m.
EZE
-
YYZ
1 stop36h 11m
Copa Airlines
Deal found 19/5C$ 753
Sat 23/53:18 p.m.
YYZ
-
EZE
1 stop18h 47m
American Airlines
Wed 27/510:35 p.m.
EZE
-
YYZ
2 stops17h 24m
American Airlines
Deal found 23/5C$ 760
Fri 22/512:30 p.m.
YUL
-
EZE
2 stops17h 35m
American Airlines
Thu 4/69:15 a.m.
EZE
-
YUL
1 stop15h 14m
American Airlines
Deal found 20/5C$ 761
Wed 24/67:10 a.m.
YUL
-
EZE
1 stop22h 55m
American Airlines
Mon 6/710:35 p.m.
EZE
-
YUL
1 stop25h 51m
American Airlines
Deal found 24/5C$ 764
Mon 25/56:46 a.m.
YYZ
-
EZE
1 stop23h 19m
American Airlines
Mon 1/610:05 p.m.
EZE
-
YYZ
1 stop25h 51m
American Airlines
Deal found 24/5C$ 764
Thu 18/67:10 a.m.
YUL
-
EZE
1 stop24h 40m
American Airlines
Mon 29/610:05 p.m.
EZE
-
YUL
1 stop17h 39m
American Airlines
Deal found 23/5C$ 765
Tue 17/116:00 a.m.
YYZ
-
EZE
1 stop23h 25m
American Airlines
Tue 24/1110:30 p.m.
EZE
-
YYZ
1 stop19h 48m
American Airlines
Deal found 24/5C$ 765
Mon 1/66:46 a.m.
YYZ
-
EZE
1 stop23h 19m
American Airlines
Mon 15/68:35 p.m.
EZE
-
YYZ
2 stops19h 24m
American Airlines
Deal found 24/5C$ 770
Tue 16/62:30 p.m.
YUL
-
EZE
2 stops19h 35m
American Airlines
Mon 29/610:05 p.m.
EZE
-
YUL
1 stop17h 39m
American Airlines
Deal found 24/5C$ 771
Mon 8/62:34 p.m.
YUL
-
EZE
2 stops19h 31m
American Airlines
Mon 22/68:35 p.m.
EZE
-
YUL
1 stop27h 54m
American Airlines
Deal found 21/5C$ 772

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 25 May 2026.

Round-trip from

C$ 691

One-way from

C$ 448

Popular in

December

Cheapest in

September

Average price

C$ 1,268
Copa Airlines
  • Copa Airlines
  • 8/6-24/6
  • 2 total stops
  • 48h 11m total
  • Ontario to Buenos Aires
Search Deals
Arajet
  • Arajet
  • 8/7
  • 1 total stop
  • 16h 35m 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).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
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 25 May 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

Mon 8/6

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

1 stop19h 00m

Buenos Aires Ministro Pistarini

Wed 24/6

2:49 p.m.-1:28 p.m.

1 stop23h 39m

C$ 692

TorontoBuenos Aires

YYZ - EZE

YYZEZE

Toronto Pearson Intl

Thu 4/6

8:30 a.m.-4:15 a.m.

1 stop18h 45m

Buenos Aires Ministro Pistarini

Wed 17/6

9:02 a.m.-1:13 a.m.

1 stop17h 11m

C$ 692

TorontoBuenos Aires

YYZ - EZE

YYZEZE

Toronto Pearson Intl

Tue 3/11

8:45 a.m.-7:57 a.m.

1 stop21h 12m

Buenos Aires Ministro Pistarini

Tue 17/11

3:41 a.m.-12:09 a.m.

1 stop22h 28m

C$ 933

TorontoBuenos Aires

YYZ - EZE

YYZEZE

Toronto Pearson Intl

Sun 1/11

8:45 a.m.-4:50 a.m.

1 stop18h 05m

Buenos Aires Ministro Pistarini

Mon 9/11

3:41 a.m.-12:09 a.m.

1 stop22h 28m

C$ 956

TorontoBuenos Aires

YYZ - EZE

YYZEZE

Toronto Pearson Intl

Sat 10/10

8:30 a.m.-4:36 a.m.

1 stop19h 06m

Buenos Aires Ministro Pistarini

Fri 23/10

8:59 a.m.-1:13 a.m.

1 stop17h 14m

C$ 978

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Tue 16/6

8:35 a.m.-4:30 a.m.

1 stop18h 55m

Buenos Aires Ministro Pistarini

Tue 23/6

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

1 stop16h 38m

C$ 1,065

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Fri 6/11

6:45 a.m.-6:45 a.m.

1 stop22h 00m

Buenos Aires Ministro Pistarini

Sun 22/11

8:40 a.m.-12:15 a.m.

1 stop17h 35m

C$ 1,116

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Sun 21/6

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

2 stops24h 55m

Buenos Aires Ministro Pistarini

Sun 28/6

9:00 p.m.-10:05 p.m.

2 stops26h 05m

C$ 1,127

MontrealBuenos Aires

YUL - EZE

YULEZE

Montreal Pierre Elliott Trudeau Intl

Tue 16/6

12:48 p.m.-9:40 a.m.

2 stops19h 52m

Buenos Aires Ministro Pistarini

Mon 29/6

8:10 p.m.-11:57 a.m.

2 stops16h 47m

C$ 1,127

OttawaBuenos Aires

YOW - EZE

YOWEZE

Ottawa

Mon 8/6

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

2 stops25h 00m

Buenos Aires Ministro Pistarini

Thu 11/6

9:00 p.m.-11:54 p.m.

2 stops27h 54m

C$ 1,127

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/5

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, June is the cheapest month in which you can book a flight from Region of Ontario to Buenos Aires (average of C$ 233). Flying from Region of Ontario to Buenos Aires in December is currently the most expensive (average of C$ 2,075). 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 25 May 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?

    Copa Airlines, Arajet, and United Airlines can get you from Region of Ontario to Buenos Aires in just under 19h. Your travel time can differ by up to 5h 55m. 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$ 491. Users have also found prices from C$ 522 and C$ 565 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, June is the cheapest month in which you can book a flight from Region of Ontario to Buenos Aires (average of C$ 233). Flying from Region of Ontario to Buenos Aires in December is currently the most expensive (average of C$ 2,075). 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 25 May 2026.
AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapestC$ 305AverageC$ 1,327FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
United AirlinesCheapestC$ 592AverageC$ 1,238FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Copa AirlinesCheapestC$ 748AverageC$ 1,164FlexibilityNo cancel feeOn-time70%
Search Copa Airlines flights
ArajetCheapestC$ 784AverageC$ 1,296FlexibilityNo cancel feeOn-timeN/A
Search Arajet flights
DeltaCheapestC$ 792AverageC$ 1,254FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
AviancaCheapestC$ 964AverageC$ 1,202FlexibilityNo cancel feeOn-time71%
Search Avianca flights
Air CanadaCheapestC$ 1,095AverageC$ 1,347FlexibilityNo 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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