Cheap flights from Montevideo to Buenos Aires from $117

The cheapest month to fly to Buenos Aires from Montevideo is in August. Flight prices, which tend to average around $114, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of August, then book flights to Buenos Aires from Montevideo during April instead. Flights to Buenos Aires in April, while not as cheap as those in August, still average around $114.

On average, the least expensive day to fly to Buenos Aires from Montevideo is on a Monday. momondo users have found tickets for Monday departures for as low as $294. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires on Wednesday is $378.

Our most recent data shows that the best time of day to fly to Buenos Aires is in the evening. Flights from Montevideo to Buenos Aires during this time can be as low as $290. Try not to purchase tickets in the afternoon because they tend to be around $366. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Montevideo Carrasco to Buenos Aires Jorge Newbery for the best Montevideo Carrasco - Buenos Aires flight prices

No. A direct flight is the cheapest option for a flight between Montevideo to Buenos Aires.

Historically, on average around 12% of flights between Montevideo and Buenos Aires have experienced a delay on any given week. The average delay length over the past 12 months has been 100 minutes.

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

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

According to our data, Aerolineas Argentinas have had the least number of delays on this route over the last 12 months; with about 9% of their flights experiencing any sort of delay.

2 flights are operational daily from Montevideo to Buenos Aires as of May 2026. The most popular departure time for this route is 1:00PM, with 35% of flights per day taking off in the afternoon.

The number of flights available between Montevideo and Buenos Aires is 19 per week as of May 2026. The most frequent departure day is Sat, with 26% of weekly flights leaving on this day.