Flight OddsUnited Airlines · Baltimore, MD to San Francisco, CA · 146 flights observed, 2026-01-07 to 2026-06-30 · 2,457 mi
UA504 covers more than one route in the data window — the stats below are for BWI → SFO, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA504 on time?
Across 146 flights on BWI → SFO from 2026-01-07 to 2026-06-30, UA504 arrived within 15 minutes of schedule 59% of the time. The median arrival delay was +8 min, and the worst 10% of flights arrived +63 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 | 85 | 59% |
| 16-30 min | 17 | 12% |
| 31-60 min | 25 | 17% |
| 61-120 min | 12 | 8% |
| 2+ hrs | 5 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 21 | 76% | +3 min |
| 2026-02 | 21 | 81% | +3 min |
| 2026-03 | 28 | 86% | +0 min |
| 2026-04 | 26 | 54% | +24 min |
| 2026-05 | 25 | 40% | +22 min |
| 2026-06 | 23 | 17% | +43 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 25 | 48% |
| Tue | 4 | 75% |
| Wed | 22 | 55% |
| Thu | 25 | 60% |
| Fri | 25 | 48% |
| Sat | 20 | 90% |
| Sun | 23 | 57% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…