GRU to AEP flight delays
São Paulo (GRU) Buenos Aires (AEP)
411 flights · January 2025 – August 2026 · ANAC Brazil
73.96%
Arrived on time
Within 15 minutes of schedule
0.97%
Cancelled
Share of scheduled flights
36 min
When late, late by
Average across delayed arrivals
12 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The two directions do not behave alike. AEP to GRU arrives on time 5.6 points less often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
This is a thin route — 411 flights across the whole period. On a route this infrequent a cancellation is far more costly than the rate suggests, because the next departure may not be the same day.
The 3 airlines here are separated by under 4 points — close enough to call a tie. Choose on price and departure time.
Flights from São Paulo to Buenos Aires run late more often than the average route, though not severely.
Which airline should you fly on this route?
Over January 2025 – August 2026, Gol Linhas Aéreas arrived on time most often on GRU to AEP. Aerolíneas Argentinas was late most often.
Every airline on GRU to AEP
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| LATAM Brasil | 182 | 73.48% | 0.55% | 29 min | C |
| Aerolíneas Argentinas | 119 | 72.41% | 2.52% | 43 min | D |
| Gol Linhas Aéreas | 110 | 76.36% | 0% | 40 min | C |
The return leg
AEP to GRU Buenos Aires back to São Paulo 68.33% on time FOther routes from São Paulo
Common questions
Are flights from São Paulo to Buenos Aires usually delayed?
73.96% of flights on the GRU to AEP route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is worse than the average route in this record.
Which airline is most on time from São Paulo to Buenos Aires?
Gol Linhas Aéreas, at 76.36% on time across 110 flights. The least punctual on the route was Aerolíneas Argentinas at 72.41%.
How often are GRU to AEP flights cancelled?
0.97% of scheduled flights did not operate — about 10 in every thousand. That is in the normal range.
When GRU to AEP flights are late, how late are they?
About 36 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on GRU to AEP during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →