Flight OddsUA343 IAH → ORD
United Airlines · Houston, TX to Chicago, IL · 113 flights observed, 2025-07-03 to 2025-12-17 · 925 mi
UA343 covers more than one route in the data window — the stats below are for IAH → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
93%
Median delay
-11 min
90th percentile
+12 min
Cancellation rate
1%
How often is UA343 on time?
Across 113 flights on IAH → ORD from 2025-07-03 to 2025-12-17, UA343 arrived within 15 minutes of schedule 93% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +12 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 | 104 | 93% |
| 16-30 min | 3 | 3% |
| 31-60 min | 1 | 1% |
| 61-120 min | 2 | 2% |
| 2+ hrs | 2 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 21 | 86% | +3 min |
| 2025-08 | 27 | 93% | -10 min |
| 2025-09 | 24 | 92% | -7 min |
| 2025-10 | 4 | 100% | -1 min |
| 2025-11 | 19 | 100% | +2 min |
| 2025-12 | 17 | 94% | -3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 20 | 90% |
| Tue | 10 | 100% |
| Wed | 10 | 90% |
| Thu | 19 | 95% |
| Fri | 18 | 100% |
| Sat | 16 | 81% |
| Sun | 19 | 95% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…