Flight OddsUnited Airlines · Washington, DC to San Francisco, CA · 279 flights observed, 2025-08-19 to 2026-06-30 · 2,418 mi
UA1434 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 UA1434 on time?
Across 279 flights on IAD → SFO from 2025-08-19 to 2026-06-30, UA1434 arrived within 15 minutes of schedule 79% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +45 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 | 220 | 79% |
| 16-30 min | 18 | 6% |
| 31-60 min | 18 | 6% |
| 61-120 min | 13 | 5% |
| 2+ hrs | 9 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 13 | 100% | -15 min |
| 2025-09 | 30 | 97% | -12 min |
| 2025-10 | 31 | 94% | -6 min |
| 2025-11 | 29 | 83% | -3 min |
| 2025-12 | 31 | 55% | +47 min |
| 2026-01 | 5 | 40% | +64 min |
| 2026-02 | 17 | 71% | +25 min |
| 2026-03 | 31 | 81% | -7 min |
| 2026-04 | 30 | 73% | +14 min |
| 2026-05 | 31 | 87% | +1 min |
| 2026-06 | 30 | 67% | +12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 40 | 75% |
| Tue | 40 | 83% |
| Wed | 39 | 82% |
| Thu | 40 | 85% |
| Fri | 39 | 77% |
| Sat | 40 | 83% |
| Sun | 40 | 70% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…