ATL → ORD American Airlines

American Airlines · Atlanta, GA to Chicago, IL · 1,368 flights, 2025-07-01 to 2026-06-30 · aggregated across 50 flight numbers

This route runs much more reliably at some times of day than others — 89% on-time departing 6–9am vs. 54% departing 6–9pm.
On-time arrival
73%
Median delay
-5 min
90th percentile
+72 min
Cancellation rate
3%

How on-time is American Airlines from ATL to ORD?

Across every American Airlines flight number on ATL → ORD (1,368 flights, 2025-07-01 to 2026-06-30), 73% arrived within 15 minutes of schedule. Median arrival delay -5 min; the worst 10% ran +72 min or later. 3% were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time96373%
16-30 min1249%
31-60 min826%
61-120 min806%
2+ hrs705%

Performance by month

MonthFlightsOn-timeAvg delay
2025-0711468%+20 min
2025-0811577%+15 min
2025-0911281%+1 min
2025-1012069%+10 min
2025-1110172%+21 min
2025-129669%+23 min
2026-018876%+6 min
2026-0211082%+6 min
2026-0311570%+9 min
2026-0411671%+39 min
2026-0512373%+19 min
2026-0610970%+18 min

Performance by day of week

DayFlightsOn-time
Mon19471%
Tue19480%
Wed18776%
Thu18770%
Fri19272%
Sat17174%
Sun19469%

Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…