Flight OddsUnited Airlines · Washington, DC to San Francisco, CA · 49 flights observed, 2025-07-01 to 2025-08-18 · 2,418 mi
UA1940 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 UA1940 on time?
Across 49 flights on IAD → SFO from 2025-07-01 to 2025-08-18, UA1940 arrived within 15 minutes of schedule 92% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +7 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 | 45 | 92% |
| 16-30 min | 1 | 2% |
| 31-60 min | 1 | 2% |
| 61-120 min | 2 | 4% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 90% | -2 min |
| 2025-08 | 18 | 94% | -11 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 7 | 100% |
| Tue | 7 | 86% |
| Wed | 7 | 100% |
| Thu | 7 | 86% |
| Fri | 7 | 100% |
| Sat | 7 | 100% |
| Sun | 7 | 71% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…