tailodds FORECAST

Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

DELTA · FLIGHT DL 1399 SCHEDULED · TYPICAL ODDS

DL 1399 · BOS → MIA

departs 7:05 AM ET · arrives 10:39 AM ET
Forecast issued Tue 6:00 PM ET · 85h before departure

Typical odds Too early for a weather forecast — these are typical odds for this flight on a Saturday in October, from the weather this date has had in past years (the range shows how much they varied). They’ll switch to forecast-based odds about 3 days before departure.

Arrive at MIA more than 15 minutes late?
11% chance · ±3 pts +0 pts · 24h
HOW SURE WE ARE Low. This is mostly a starting point from history; weather forecasts haven't kicked in yet.
WEATHER FORECASTS LIVE IN THE AIR 0% 5% 10% 15% 20% 4.4d Now 2d 1d 12h 6h Departs Lands

How late will it get to MIA?

  1. On time or early
    88%
  2. 15–30 min late
    5%
  3. 30 min–1 hour late
    3%
  4. 1–2 hours late
    1%
  5. Over 2 hours late
    1%
  6. Cancelled
    1%

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