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 1338
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 1338 · DAL → STL
departs 8:15 PM CT · arrives 10:05 PM CT
Forecast issued Wed 6:00 AM ET · 15h before departure
Watch this flight
Other days
Today
Thu 10/1 56%
Fri 10/2 58%
Sun 10/4 41%
Mon 10/5 29%
Tue 10/6 20%
Odds over time
Arrive at STL more than 15 minutes late?
56%
chance · ±2 pts
+10 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
56%
Leave 15+ late
61%
Arrive 1h+ late
16%
Cancelled
4%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
25%
50%
75%
100%
2.8d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at STL more than 15 minutes late?
Calm-weather odds: 24% · changed +10 pts in 24h
+10 pts
56%
Yes 56%
No 44%
Leave DAL more than 15 minutes late?
Calm-weather odds: 36% · changed +10 pts in 24h
+10 pts
61%
Yes 61%
No 39%
Arrive at STL more than an hour late?
Calm-weather odds: 4% · changed +2 pts in 24h
+2 pts
16%
Yes 16%
No 84%
Cancelled?
Calm-weather odds: <1% · changed +1 pt in 24h
+1 pt
4%
Yes 4%
No 96%
How late will it get to STL?
On time or early
42%
15–30 min late
14%
30 min–1 hour late
25%
1–2 hours late
10%
Over 2 hours late
5%
Cancelled
4%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Gusts to 28 kt forecast at DAL that day
↑
8pm departures from DAL are often late
↑
Later flights pick up delays from earlier in the day
↓
Wednesdays in September are usually quieter than average
↓
Mostly benign weather forecast at STL
Weather at each end
DAL (origin)
Gusts 28 kt Ceiling 2,700 ft Visibility 10+ mi Precip 0.14 in
STL (destination)
Gusts 14 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.