Flight OddsUnited Airlines · Washington, DC to San Francisco, CA · 174 flights observed, 2025-12-18 to 2026-06-30 · 2,418 mi
UA1147 covers more than one route in the data window — the stats below are for IAD → SFO, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA1147 on time?
Across 174 flights on IAD → SFO from 2025-12-18 to 2026-06-30, UA1147 arrived within 15 minutes of schedule 85% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +19 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 146 | 85% |
| 16-30 min | 16 | 9% |
| 31-60 min | 4 | 2% |
| 61-120 min | 2 | 1% |
| 2+ hrs | 4 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 14 | 71% | +5 min |
| 2026-01 | 29 | 93% | +11 min |
| 2026-02 | 11 | 82% | -9 min |
| 2026-03 | 27 | 96% | -16 min |
| 2026-04 | 30 | 93% | +0 min |
| 2026-05 | 31 | 74% | +18 min |
| 2026-06 | 30 | 77% | +2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 24 | 79% |
| Tue | 25 | 88% |
| Wed | 24 | 88% |
| Thu | 25 | 84% |
| Fri | 25 | 88% |
| Sat | 25 | 88% |
| Sun | 24 | 79% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…