Flight OddsUA512 IAH → DCA
United Airlines · Houston, TX to Washington, DC · 254 flights observed, 2025-07-01 to 2026-05-20 · 1,208 mi
UA512 covers more than one route in the data window — the stats below are for IAH → DCA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
94%
Median delay
-11 min
90th percentile
+7 min
Cancellation rate
1%
How often is UA512 on time?
Across 254 flights on IAH → DCA from 2025-07-01 to 2026-05-20, UA512 arrived within 15 minutes of schedule 94% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +7 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 | 235 | 94% |
| 16-30 min | 4 | 2% |
| 31-60 min | 5 | 2% |
| 61-120 min | 5 | 2% |
| 2+ hrs | 2 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 81% | +6 min |
| 2025-08 | 17 | 88% | -5 min |
| 2025-10 | 6 | 100% | -14 min |
| 2025-11 | 28 | 96% | -8 min |
| 2025-12 | 31 | 94% | -10 min |
| 2026-01 | 30 | 100% | -15 min |
| 2026-02 | 27 | 100% | -11 min |
| 2026-03 | 31 | 94% | -1 min |
| 2026-04 | 30 | 93% | -8 min |
| 2026-05 | 20 | 95% | -4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 36 | 92% |
| Tue | 37 | 92% |
| Wed | 36 | 100% |
| Thu | 35 | 89% |
| Fri | 35 | 100% |
| Sat | 36 | 89% |
| Sun | 36 | 94% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…