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.
AMERICAN · FLIGHT AA 1878SCHEDULED · TYPICAL SCHEDULE
AA 1878 · DFW → FSD
departs 2:46 PM CT · arrives 4:54 PM CT
Forecast issued Sat 7:00 AM ET · 57h before departure
Odds over time
Arrive at FSD more than 15 minutes late?
33%chance · ±2 pts– · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to FSD?
On time or early
66%
15–30 min late
17%
30 min–1 hour late
5%
1–2 hours late
7%
Over 2 hours late
3%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.