Flight OddsUA543 BOS → IAH
United Airlines · Boston, MA to Houston, TX · 48 flights observed, 2025-07-01 to 2025-08-18 · 1,597 mi
UA543 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
98%
Median delay
-18 min
90th percentile
-1 min
Cancellation rate
4%
How often is UA543 on time?
Across 48 flights on BOS → IAH from 2025-07-01 to 2025-08-18, UA543 arrived within 15 minutes of schedule 98% of the time. The median arrival delay was -18 min, and the worst 10% of flights arrived -1 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 45 | 98% |
| 16-30 min | 0 | 0% |
| 31-60 min | 1 | 2% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 28 | 96% | -15 min |
| 2025-08 | 18 | 100% | -13 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 6 | 100% |
| Tue | 6 | 83% |
| Wed | 7 | 100% |
| Thu | 7 | 100% |
| Fri | 7 | 100% |
| Sat | 6 | 100% |
| Sun | 7 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…