Flight OddsUA4308 IAD → TYS
United Airlines · Washington, DC to Knoxville, TN · 206 flights observed, 2025-10-26 to 2026-05-20 · 420 mi
UA4308 covers more than one route in the data window — the stats below are for IAD → TYS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
80%
Median delay
-6 min
90th percentile
+73 min
Cancellation rate
2%
How often is UA4308 on time?
Across 206 flights on IAD → TYS from 2025-10-26 to 2026-05-20, UA4308 arrived within 15 minutes of schedule 80% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +73 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 162 | 80% |
| 16-30 min | 8 | 4% |
| 31-60 min | 7 | 3% |
| 61-120 min | 7 | 3% |
| 2+ hrs | 18 | 9% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 67% | +54 min |
| 2025-11 | 30 | 73% | +16 min |
| 2025-12 | 31 | 58% | +89 min |
| 2026-01 | 26 | 88% | +13 min |
| 2026-02 | 28 | 93% | -9 min |
| 2026-03 | 31 | 90% | -6 min |
| 2026-04 | 30 | 87% | -8 min |
| 2026-05 | 20 | 75% | +27 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 29 | 86% |
| Tue | 29 | 83% |
| Wed | 30 | 77% |
| Thu | 29 | 79% |
| Fri | 29 | 83% |
| Sat | 27 | 74% |
| Sun | 29 | 79% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…