Flight OddsDL4921 DTW → TYS
Delta Air Lines · Detroit, MI to Knoxville, TN · 45 flights observed, 2025-07-05 to 2025-10-04 · 443 mi
DL4921 covers more than one route in the data window — the stats below are for DTW → TYS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
64%
Median delay
+3 min
90th percentile
+52 min
Cancellation rate
0%
How often is DL4921 on time?
Across 45 flights on DTW → TYS from 2025-07-05 to 2025-10-04, DL4921 arrived within 15 minutes of schedule 64% of the time. The median arrival delay was +3 min, and the worst 10% of flights arrived +52 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 28 | 64% |
| 16-30 min | 8 | 18% |
| 31-60 min | 4 | 9% |
| 61-120 min | 1 | 2% |
| 2+ hrs | 3 | 7% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 27 | 59% | +23 min |
| 2025-08 | 12 | 58% | +15 min |
| 2025-09 | 4 | 100% | -4 min |
| 2025-10 | 1 | 100% | -6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 40% |
| Tue | 5 | 100% |
| Wed | 5 | 80% |
| Thu | 5 | 80% |
| Fri | 5 | 40% |
| Sat | 13 | 69% |
| Sun | 6 | 33% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…