Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
UNITED · FLIGHT UA 1839SCHEDULED · TYPICAL SCHEDULE
UA 1839 · ORD → DSM
departs 9:25 PM CT · arrives 10:56 PM CT
Forecast issued Fri 10:00 PM ET · 48h before departure
Odds over time
Arrive at DSM more than 15 minutes late?
17%chance · ±3 pts+1 pt · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to DSM?
On time or early
82%
15–30 min late
5%
30 min–1 hour late
6%
1–2 hours late
4%
Over 2 hours late
1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.