Flight OddsUnited Airlines · Salt Lake City, UT to Houston, TX · 31 flights observed, 2026-03-29 to 2026-04-29 · 1,195 mi
UA4039 covers more than one route in the data window — the stats below are for SLC → IAH, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA4039 on time?
Across 31 flights on SLC → IAH from 2026-03-29 to 2026-04-29, UA4039 arrived within 15 minutes of schedule 87% of the time. The median arrival delay was -22 min, and the worst 10% of flights arrived +33 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 27 | 87% |
| 16-30 min | 0 | 0% |
| 31-60 min | 2 | 6% |
| 61-120 min | 1 | 3% |
| 2+ hrs | 1 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 3 | 100% | -24 min |
| 2026-04 | 28 | 86% | -4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 100% |
| Tue | 5 | 80% |
| Wed | 5 | 80% |
| Thu | 4 | 100% |
| Fri | 4 | 100% |
| Sat | 3 | 67% |
| Sun | 5 | 80% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…