About 1 in 3 AA 3745 flights from Chicago arrived 15+ minutes late, diverted or cancelled over the past year (36%); 4.0% were cancelled. The typical flight landed 4 minutes early.
AA 3745: ORD → COU
Scheduled to leave Chicago at 6:50 p.m. local time, operated by Envoy as MQ 3745. Over the past year it arrived on time 64% of the time (302 flights), worse than other AA flights on the route at that hour (67%). Last seen in the data Aug 4, 2026.
Usually American Airlines's last flight of the day from Chicago to Columbia (76% of days). American Airlines's last ORD–COU flight was cancelled 4.7% of the time, against 1.8% for its earlier ones. If it's cancelled, the next American Airlines flight is usually around 8:30 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 48 | 67% |
| Tuesday | 39 | 74% |
| Wednesday | 36 | 58% |
| Thursday | 45 | 58% |
| Friday | 43 | 58% |
| Saturday | 43 | 67% |
| Sunday | 48 | 67% |
Why it was late
All flights ORD → COU · Connecting off AA 3745? Check the risk
Questions
How often is AA 3745 from ORD to COU late?
American Airlines 3745 from Chicago, IL to Columbia, MO arrived 15 or more minutes late, was diverted or was cancelled on 36% of 302 scheduled flights between September 2025 and August 2026. 4.0% 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.