About 1 in 4 DL 921 flights from Atlanta arrived 15+ minutes late, diverted or cancelled over the past year (25%); 0.8% were cancelled. The typical flight landed 3 minutes early.
DL 921: ATL → DFW
Scheduled to leave Atlanta at 1:59 p.m. local time. Over the past year it arrived on time 75% of the time (363 flights), worse than other DL flights on the route at that hour (79%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 75% |
| Tuesday | 52 | 77% |
| Wednesday | 52 | 73% |
| Thursday | 52 | 88% |
| Friday | 52 | 71% |
| Saturday | 51 | 75% |
| Sunday | 51 | 69% |
Why it was late
All flights ATL → DFW · Connecting off DL 921? Check the risk
Questions
How often is DL 921 from ATL to DFW late?
Delta Air Lines 921 from Atlanta, GA to Dallas/Fort Worth, TX arrived 15 or more minutes late, was diverted or was cancelled on 25% of 363 scheduled flights between September 2025 and August 2026. 0.8% 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 Delta Air Lines for today's flight. Method.