Schedule: a typical summer Monday (the flights of Jul 27, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
UNITED · FLIGHT UA 2638SCHEDULED · TYPICAL SCHEDULE
UA 2638 · DCA → ORD
departs 7:15 AM ET · arrives 8:28 AM CT
Forecast issued Sat 12:00 PM ET · 43h before departure
Odds over time
Arrive at ORD more than 15 minutes late?
7%chance · ±1 pts+1 pt · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to ORD?
On time or early
92%
15–30 min late
4%
30 min–1 hour late
1%
1–2 hours late
<1%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.