tailodds FORECAST

Schedule: a typical Friday (the flights of Jul 31, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

SOUTHWEST · FLIGHT WN 4120 SCHEDULED · TYPICAL SCHEDULE
Tomorrow

WN 4120 · RSW → MDW

departs 5:10 PM ET · arrives 7:05 PM CT
Forecast issued Thu 8:00 PM ET · 21h before departure
Arrive at MDW more than 15 minutes late?
41% chance · ±4 pts +4 pts · 24h
HOW SURE WE ARE Good. The odds now lean mostly on firmed-up weather forecasts.
WEATHER FORECASTS LIVE IN THE AIR 0% 15% 30% 45% 60% 3.8d 2d Now 12h 6h Departs Lands

How late will it get to MDW?

  1. On time or early
    57%
  2. 15–30 min late
    7%
  3. 30 min–1 hour late
    21%
  4. 1–2 hours late
    8%
  5. Over 2 hours late
    4%
  6. Cancelled
    3%

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