Cheap flights from Rio de Janeiro to Buenos Aires from $89

The cheapest month to fly to Buenos Aires from Rio de Janeiro is in June. Flight prices, which tend to average around $243, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of June, then book flights to Buenos Aires from Rio de Janeiro during May instead. Flights to Buenos Aires in May, while not as cheap as those in June, still average around $243.

On average, the least expensive day to fly to Buenos Aires from Rio de Janeiro is on a Thursday. momondo users have found tickets for Thursday departures for as low as $281. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires on Sunday is $386.

Our most recent data shows that the best time of day to fly to Buenos Aires is in the evening. Flights from Rio de Janeiro to Buenos Aires during this time can be as low as $290. Try not to purchase tickets at noon because they tend to be around $406. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 $300 when searching weeks out. 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 $267 on momondo.

There are 4 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.

No. A direct flight is the cheapest option for a flight between Rio de Janeiro to Buenos Aires.

As of September 2026, prices for Rio de Janeiro to Buenos Aires flights are approximately 32% cheaper when compared to flights at the same time last year.

Historically, on average around 15% 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 128 minutes.

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

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

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

24 flights are operational daily from Rio de Janeiro to Buenos Aires as of September 2026. The most popular departure time for this route is 8:00AM, with 56% of flights per day taking off at noon.

The number of flights available between Rio de Janeiro and Buenos Aires is 169 per week as of September 2026. The most frequent departure day is Sun, with 21% of weekly flights leaving on this day.