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 663SCHEDULED · TYPICAL SCHEDULE
Tomorrow
DL 663 · ATL → SLC
departs 11:56 AM ET · arrives 1:50 PM MT
Forecast issued Fri 5:00 PM ET · 19h before departure
Odds over time
Arrive at SLC more than 15 minutes late?
12%chance · ±1 pts−4 pts · 24h
HOW SURE WE AREGood. The odds now lean mostly on firmed-up weather forecasts.
How late will it get to SLC?
On time or early
88%
15–30 min late
5%
30 min–1 hour late
4%
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%.