Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3880
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 3880 · SRQ → STL
departs 3:50 PM ET · arrives 5:15 PM CT
Forecast issued Wed 7:00 PM ET · 3h after departure
Watch this flight
Other days
Today
Thu 10/1 39%
Fri 10/2 37%
Sun 10/4 27%
Mon 10/5 15%
Tue 10/6 16%
Odds over time
Arrive at STL more than 15 minutes late?
25%
chance · ±0 pts
+8 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
25%
Leave 15+ late
19%
Arrive 1h+ late
6%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at STL more than 15 minutes late?
Calm-weather odds: 25% · changed +8 pts in 24h
+8 pts
25%
Yes 25%
No 75%
Leave SRQ more than 15 minutes late?
Calm-weather odds: 18% · changed +3 pts in 24h
+3 pts
19%
Yes 19%
No 81%
Arrive at STL more than an hour late?
Calm-weather odds: 6% · changed +1 pt in 24h
+1 pt
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to STL?
On time or early
74%
15–30 min late
16%
30 min–1 hour late
4%
1–2 hours late
4%
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
↑
1.7 in of rain forecast at SRQ that day
↑
Later flights pick up delays from earlier in the day
↑
WN's recent on-time record
↓
Wednesdays in September are usually quieter than average
↓
SRQ usually runs smoothly
Weather at each end
SRQ (origin)
Gusts 26 kt Ceiling 2,700 ft Visibility 2 mi Precip 0.70 in
STL (destination)
Gusts 20 kt Ceiling 9,000 ft Visibility 10+ mi Precip none
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.