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 1279SCHEDULED · TYPICAL SCHEDULE
UA 1279 · DEN → IAD
departs 6:13 AM MT · arrives 11:41 AM ET
Forecast issued Fri 5:00 PM ET · 39h before departure
Odds over time
Arrive at IAD more than 15 minutes late?
8%chance · ±2 pts+2 pts · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to IAD?
On time or early
91%
15–30 min late
5%
30 min–1 hour late
1%
1–2 hours late
1%
Over 2 hours late
<1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.