About 1 in 4 AA 1743 flights from Chicago arrived 15+ minutes late, diverted or cancelled over the past year (28%); 2.9% were cancelled. The typical flight landed 3 minutes early.
AA 1743: ORD → PHL
Scheduled to leave Chicago at 11:40 a.m. local time. Over the past year it arrived on time 72% of the time (138 flights), in line with other AA flights on the route at that hour (70%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 20 | 70% |
| Tuesday | 19 | — |
| Wednesday | 19 | — |
| Thursday | 20 | 75% |
| Friday | 20 | 70% |
| Saturday | 20 | 70% |
| Sunday | 20 | 75% |
Why it was late
All flights ORD → PHL · Connecting off AA 1743? Check the risk
Questions
How often is AA 1743 from ORD to PHL late?
American Airlines 1743 from Chicago, IL to Philadelphia, PA arrived 15 or more minutes late, was diverted or was cancelled on 28% of 138 scheduled flights between September 2025 and August 2026. 2.9% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check American Airlines for today's flight. Method.