Flight OddsUA504 ATL → SFO
United Airlines · Atlanta, GA to San Francisco, CA · 91 flights observed, 2025-07-01 to 2025-10-24 · 2,139 mi
UA504 covers more than one route in the data window — the stats below are for ATL → SFO, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
81%
Median delay
-8 min
90th percentile
+21 min
Cancellation rate
0%
How often is UA504 on time?
Across 91 flights on ATL → SFO from 2025-07-01 to 2025-10-24, UA504 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +21 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 | 74 | 81% |
| 16-30 min | 8 | 9% |
| 31-60 min | 1 | 1% |
| 61-120 min | 6 | 7% |
| 2+ hrs | 2 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 80% | +4 min |
| 2025-08 | 26 | 77% | +8 min |
| 2025-09 | 20 | 90% | -7 min |
| 2025-10 | 15 | 80% | +8 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 12 | 83% |
| Tue | 7 | 100% |
| Wed | 17 | 82% |
| Thu | 17 | 71% |
| Fri | 16 | 69% |
| Sat | 7 | 100% |
| Sun | 15 | 87% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…