tailodds FORECAST

Schedule: a typical Tuesday (the flights of Jul 28, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

SOUTHWEST · FLIGHT WN 636 SCHEDULED · TYPICAL ODDS

WN 636 · MDW → SEA

departs 5:05 PM CT · arrives 7:35 PM PT
Forecast issued Wed 12:00 AM ET · 162h before departure

Typical odds Too early for a weather forecast — these are typical odds for this flight on a Tuesday 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 SEA more than 15 minutes late?
32% chance · ±14 pts – · 24h
HOW SURE WE ARE Low. This is mostly a starting point from history; weather forecasts haven't kicked in yet.
MOSTLY HISTORY WEATHER FORECASTS LIVE IN THE AIR 0% 15% 30% 45% 60% Now 2d 1d 12h 6h Departs Lands

How late will it get to SEA?

  1. On time or early
    67%
  2. 15–30 min late
    10%
  3. 30 min–1 hour late
    10%
  4. 1–2 hours late
    9%
  5. Over 2 hours late
    3%
  6. Cancelled
    1%

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