Cheap flights from Rio de Janeiro to Buenos Aires from £77

In general, June is the cheapest month to fly from Rio de Janeiro to Buenos Aires. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £179. If you don’t want to visit Buenos Aires in June, then you should wait until May to fly from Rio de Janeiro, when ticket prices are also cheap, with an average price of £180.

The cheapest day to depart on your flight to Buenos Aires is on a Wednesday when prices can be found for as low as £220. This is often the case because there is less demand to fly during this day of the week. On the other hand, Tuesday is the most expensive day to depart from Rio de Janeiro because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £314.

Our most recent data shows that the best time of day to fly to Buenos Aires is in the morning. Flights from Rio de Janeiro to Buenos Aires during this time can be as low as £252. Flights to Buenos Aires are more costly at midday, with an average ticket price of £314. Departure times at midday fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Rio de Janeiro–Galeão Intl to Buenos Aires Jorge Newbery for the best Rio de Janeiro - Buenos Aires flight prices

You are more likely to see cheaper flights to Buenos Aires from Rio de Janeiro when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around £217 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from Rio de Janeiro for as low as £202 on momondo.

There are 3 cabin classes available to choose from on Rio de Janeiro to Buenos Aires flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Historically, on average around 14% of flights between Rio de Janeiro and Buenos Aires have experienced a delay on any given week. The average delay length over the past 12 months has been 130 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 6% of their flights experiencing any sort of delay.

19 flights are operational daily from Rio de Janeiro to Buenos Aires as of August 2026. The most popular departure time for this route is 07:00, with 47% of flights per day taking off at midday.

As of August 2026, there are 137 flights per week flying from Rio de Janeiro to Buenos Aires. The most common day of the week flights depart is Sat, with 28% of flights taking off on this day.