Flight OddsUA512 SFO → IAH
United Airlines · San Francisco, CA to Houston, TX · 243 flights observed, 2025-07-01 to 2026-03-04 · 1,635 mi
UA512 covers more than one route in the data window — the stats below are for SFO → IAH, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
91%
Median delay
-12 min
90th percentile
+13 min
Cancellation rate
1%
How often is UA512 on time?
Across 243 flights on SFO → IAH from 2025-07-01 to 2026-03-04, UA512 arrived within 15 minutes of schedule 91% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +13 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 | 219 | 91% |
| 16-30 min | 9 | 4% |
| 31-60 min | 6 | 2% |
| 61-120 min | 5 | 2% |
| 2+ hrs | 2 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 90% | -4 min |
| 2025-08 | 30 | 87% | -4 min |
| 2025-09 | 30 | 97% | -19 min |
| 2025-10 | 30 | 90% | -7 min |
| 2025-11 | 29 | 93% | -2 min |
| 2025-12 | 31 | 84% | +1 min |
| 2026-01 | 30 | 90% | -3 min |
| 2026-02 | 27 | 96% | -11 min |
| 2026-03 | 4 | 100% | -16 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 35 | 80% |
| Tue | 36 | 92% |
| Wed | 34 | 94% |
| Thu | 35 | 91% |
| Fri | 34 | 94% |
| Sat | 34 | 85% |
| Sun | 33 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…