ORD to GRU flight delays
Chicago, IL (ORD) São Paulo (GRU)
478 flights · July 2024 – July 2026 · US Bureau of Transportation Statistics and ANAC Brazil
42.53%
Arrived on time
Within 15 minutes of schedule
0.63%
Cancelled
Share of scheduled flights
101 min
When late, late by
Average across delayed arrivals
60 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In April it ran 60.3 points more punctual than in July — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
Flights from Chicago to São Paulo arrive late more often than they arrive on time. At this rate lateness is the normal outcome, not the exception, and the schedule is better read as an aspiration than a plan.
The two directions do not behave alike. GRU to ORD arrives on time 38.1 points more 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 route does worse than its own airport. ORD as a whole runs 33 points more punctual than these flights, which points at something specific to the route — the time of day it is scheduled, or the aircraft that feed it — rather than the airport.
Which airline should you fly on this route?
Over July 2024 – July 2026, United Airlines arrived on time most often on ORD to GRU. Flights ran closest to schedule in February and worst in July.
Every airline on ORD to GRU
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 |
|---|---|---|---|---|---|
| United Airlines | 477 | 42.41% | 0.63% | 101 min | F |
| Qatar Airways | 1 | 100% | 0% | — | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
GRU to ORD São Paulo back to Chicago 80.63% on time COther routes from Chicago
Common questions
Are flights from Chicago to São Paulo usually delayed?
42.53% of flights on the ORD to GRU route arrived within 15 minutes of schedule, so roughly 6 in every ten arrived late. That is worse than the average route in this record.
Which airlines fly from Chicago to São Paulo?
Only United Airlines appears in the published record on this route, with 477 flights and 42.41% arriving on time.
How often are ORD to GRU flights cancelled?
0.63% of scheduled flights did not operate — about 6 in every thousand. That is in the normal range.
What is the best month to fly Chicago to São Paulo?
April, when 70% of flights arrived on time. The worst was July at 9.7%.
When ORD to GRU flights are late, how late are they?
About 101 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 ORD to GRU during July 2024 – July 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 →