Flight OddsUA577 BOS → IAH
United Airlines · Boston, MA to Houston, TX · 52 flights observed, 2025-08-19 to 2026-01-05 · 1,597 mi
UA577 covers more than one route in the data window — the stats below are for BOS → IAH, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
69%
Median delay
-9 min
90th percentile
+69 min
Cancellation rate
2%
How often is UA577 on time?
Across 52 flights on BOS → IAH from 2025-08-19 to 2026-01-05, UA577 arrived within 15 minutes of schedule 69% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +69 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 35 | 69% |
| 16-30 min | 2 | 4% |
| 31-60 min | 7 | 14% |
| 61-120 min | 4 | 8% |
| 2+ hrs | 3 | 6% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 13 | 69% | +20 min |
| 2025-09 | 23 | 48% | +34 min |
| 2025-12 | 11 | 100% | -37 min |
| 2026-01 | 4 | 100% | -27 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 75% |
| Tue | 8 | 75% |
| Wed | 6 | 50% |
| Thu | 8 | 63% |
| Fri | 8 | 75% |
| Sat | 5 | 60% |
| Sun | 8 | 75% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…