tailodds FORECAST

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.

DELTA · FLIGHT DL 663 SCHEDULED · TYPICAL SCHEDULE

DL 663 · ATL → SLC

departs 11:56 AM ET · arrives 1:50 PM MT
Forecast issued Fri 5:00 PM ET · 67h before departure
Arrive at SLC more than 15 minutes late?
14% chance · ±4 pts +4 pts · 24h
HOW SURE WE ARE Moderate. The odds now blend history with early weather forecasts.
MOSTLY HISTORY WEATHER FORECASTS LIVE IN THE AIR 0% 5% 10% 15% 20% 6.5d Now 2d 1d 12h 6h Departs Lands

How late will it get to SLC?

  1. On time or early
    85%
  2. 15–30 min late
    4%
  3. 30 min–1 hour late
    7%
  4. 1–2 hours late
    2%
  5. Over 2 hours late
    1%
  6. Cancelled
    <1%

Gate arrival compared with the scheduled arrival. The ranges add up to 100%.