Cheap flights from Ontario to Buenos Aires from C$ 298

The cheapest month to fly to Buenos Aires from Region of Ontario is in October. Flight prices, which tend to average around C$ 257, are often lower during this time because this is during the off-season. If you’re not able to fly to Buenos Aires in October, then September is your next best option. Flight prices from Region of Ontario to Buenos Aires during September average around C$ 276.

The cheapest day to depart on your flight to Buenos Aires is on a Wednesday when prices can be found for as low as C$ 1,443. This is often the case because there is less demand to fly during this day of the week. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Region of Ontario to Buenos Aires for around C$ 2,005.

Fly from Toronto Pearson Intl to Buenos Aires Ministro Pistarini for the best Ontario - Buenos Aires flight prices

You are more likely to see cheaper flights to Buenos Aires from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around C$ 1,264 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from Region of Ontario for as low as C$ 940 on momondo.

There is only 1 cabin class available to choose from on Region of Ontario to Buenos Aires flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 1% on your flight if you consider stops on a Region of Ontario to Buenos Aires flight.

Arajet, Aeromexico, and Delta are the most popular carriers operating from Ontario to Buenos Aires

United Airlines, Air Canada and Avianca are the top three most popular airlines that fly to Buenos Aires from Region of Ontario according to our data. United Airlines is the first choice among our users, with 33% of people opting to fly with this airline when travelling to Buenos Aires. Keep in mind that there are 8 different airlines that fly to Buenos Aires on a routine basis, so you have a few additional options to choose from.

As of July 2026, there are 3 flights per week flying from Region of Ontario to Buenos Aires. The most common day of the week flights depart is Wed, with 33% of flights taking off on this day.

Flight times from Region of Ontario to Buenos Aires vary, but if you’re flying out of Toronto and flying into Buenos Aires Ministro Pistarini Airport (one of the most popular routes), then the duration is 16h 33m on average. Another popular route from Region of Ontario to Buenos Aires is flying from Ottawa to Buenos Aires Ministro Pistarini Airport, which will take roughly 21h 35m. Keep in mind that layovers or delays could extend your travel time.