Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
UNITED · FLIGHT UA 638SCHEDULED · TYPICAL SCHEDULE
Tomorrow
UA 638 · SFO → HNL
departs 7:00 PM PT · arrives 9:43 PM HT
Forecast issued Thu 10:00 PM ET · 24h before departure
Odds over time
Arrive at HNL more than 15 minutes late?
20%chance · ±4 pts+1 pt · 24h
HOW SURE WE AREGood. The odds now lean mostly on firmed-up weather forecasts.
How late will it get to HNL?
On time or early
79%
15–30 min late
7%
30 min–1 hour late
7%
1–2 hours late
3%
Over 2 hours late
3%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.