About 1 in 8 AA 3924 flights from Dallas arrived 15+ minutes late, diverted or cancelled over the past year (13%); 1.4% were cancelled. The typical flight landed 9 minutes early.
AA 3924: DFW → CMI
Scheduled to leave Dallas at 12:20 p.m. local time, operated by Envoy as MQ 3924. Over the past year it arrived on time 87% of the time (210 flights), in line with other AA flights on the route at that hour (89%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 31 | 87% |
| Tuesday | 29 | 93% |
| Wednesday | 30 | 87% |
| Thursday | 30 | 87% |
| Friday | 30 | 93% |
| Saturday | 30 | 77% |
| Sunday | 30 | 87% |
Why it was late
All flights DFW → CMI · Connecting off AA 3924? Check the risk
Questions
How often is AA 3924 from DFW to CMI late?
American Airlines 3924 from Dallas/Fort Worth, TX to Champaign/Urbana, IL arrived 15 or more minutes late, was diverted or was cancelled on 13% of 210 scheduled flights between September 2025 and August 2026. 1.4% 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.