Flight OddsUnited Airlines · San Francisco, CA to Honolulu, HI · 270 flights observed, 2025-07-01 to 2026-06-30 · 2,398 mi
UA638 covers more than one route in the data window — the stats below are for SFO → HNL, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA638 on time?
Across 270 flights on SFO → HNL from 2025-07-01 to 2026-06-30, UA638 arrived within 15 minutes of schedule 89% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +18 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 | 239 | 89% |
| 16-30 min | 10 | 4% |
| 31-60 min | 6 | 2% |
| 61-120 min | 8 | 3% |
| 2+ hrs | 6 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 90% | -5 min |
| 2025-08 | 18 | 89% | +19 min |
| 2025-09 | 6 | 83% | +1 min |
| 2025-10 | 31 | 84% | -6 min |
| 2025-11 | 30 | 97% | -20 min |
| 2025-12 | 31 | 90% | -15 min |
| 2026-01 | 5 | 60% | +4 min |
| 2026-03 | 27 | 96% | -22 min |
| 2026-04 | 30 | 97% | -15 min |
| 2026-05 | 31 | 87% | -8 min |
| 2026-06 | 30 | 77% | +19 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 39 | 92% |
| Tue | 37 | 92% |
| Wed | 37 | 86% |
| Thu | 39 | 90% |
| Fri | 39 | 90% |
| Sat | 39 | 85% |
| Sun | 39 | 87% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…