Schedule: a typical summer Saturday (the flights of Jul 25, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 521SCHEDULED · TYPICAL SCHEDULE
Tomorrow
DL 521 · LAX → DFW
departs 9:40 AM PT · arrives 2:53 PM CT
Forecast issued Fri 4:00 AM ET · 33h before departure
Odds over time
Arrive at DFW more than 15 minutes late?
30%chance · ±4 pts+8 pts · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to DFW?
On time or early
69%
15–30 min late
6%
30 min–1 hour late
16%
1–2 hours late
3%
Over 2 hours late
3%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.