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.
AMERICAN · FLIGHT AA 1878SCHEDULED · TYPICAL SCHEDULE
Tomorrow
AA 1878 · DFW → FSD
departs 2:46 PM CT · arrives 4:54 PM CT
Forecast issued Sat 2:00 AM ET · 38h before departure
Odds over time
Arrive at FSD more than 15 minutes late?
36%chance · ±2 pts−6 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
64%
15–30 min late
14%
30 min–1 hour late
11%
1–2 hours late
6%
Over 2 hours late
5%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.