Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3879
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
WN 3879 · SRQ → MDW
departs 5:45 PM ET · arrives 7:25 PM CT
Forecast issued Fri 5:00 PM ET · 1h before departure
Watch this flight
Other days
Today
Sun 10/4 28%
Mon 10/5 22%
Odds over time
Arrive at MDW more than 15 minutes late?
30%
chance · ±0 pts
−8 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
30%
Leave 15+ late
27%
Arrive 1h+ late
8%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
3.8d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at MDW more than 15 minutes late?
Calm-weather odds: 26% · changed −8 pts in 24h
−8 pts
30%
Yes 30%
No 70%
Leave SRQ more than 15 minutes late?
Calm-weather odds: 30% · changed −15 pts in 24h
−15 pts
27%
Yes 27%
No 73%
Arrive at MDW more than an hour late?
Calm-weather odds: 6% · changed −4 pts in 24h
−4 pts
8%
Yes 8%
No 92%
Cancelled?
Calm-weather odds: 1% · changed −1 pt in 24h
−1 pt
1%
Yes 1%
No 99%
How late will it get to MDW?
On time or early
70%
15–30 min late
8%
30 min–1 hour late
14%
1–2 hours late
6%
Over 2 hours late
2%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
0.3 in of rain, thunderstorms forecast at SRQ that day
↑
Later flights pick up delays from earlier in the day
↑
This flight has been late 37% of the time recently
↓
SRQ usually runs smoothly
↓
Fridays in October are usually quieter than average
Weather at each end
SRQ (origin)
Gusts 13 kt Ceiling 2,800 ft Visibility 10+ mi Precip 0.03 in
MDW (destination)
Gusts 15 kt Ceiling 1,500 ft Visibility 7 mi Precip 0.12 in
How this resolves
Yes if the gate arrival is more than 15 minutes after the scheduled arrival. Cancelled or diverted flights resolve N/A.
Every question here is display only — there is no betting or money involved. Gate times come from the airline; a cancellation resolves only the “Cancelled?” question, and a diversion voids the delay questions.