Flight OddsDelta Air Lines · Austin, TX to Raleigh/Durham, NC · 115 flights observed, 2026-02-12 to 2026-06-30 · 1,162 mi
DL4921 covers more than one route in the data window — the stats below are for AUS → RDU, the one it has flown most recently. The others are linked under “Other routes”.
How often is DL4921 on time?
Across 115 flights on AUS → RDU from 2026-02-12 to 2026-06-30, DL4921 arrived within 15 minutes of schedule 82% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +36 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 | 94 | 82% |
| 16-30 min | 9 | 8% |
| 31-60 min | 2 | 2% |
| 61-120 min | 4 | 3% |
| 2+ hrs | 6 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-02 | 17 | 82% | +20 min |
| 2026-03 | 31 | 90% | +2 min |
| 2026-04 | 12 | 67% | +4 min |
| 2026-05 | 25 | 76% | +6 min |
| 2026-06 | 30 | 83% | +13 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 16 | 75% |
| Tue | 16 | 94% |
| Wed | 15 | 80% |
| Thu | 17 | 94% |
| Fri | 17 | 65% |
| Sat | 17 | 88% |
| Sun | 17 | 76% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…