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 4387
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Yesterday
WN 4387 · HOU → MSY
departs 8:10 AM CT · arrives 9:25 AM CT
Forecast issued Wed 10:00 PM ET · 13h after departure
Watch this flight
Other days
Wed 9/30
Tue 10/6 6%
Wed 10/7 5%
Odds over time
Arrive at MSY more than 15 minutes late?
6%
chance · ±0 pts
−10 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
6%
Leave 15+ late
6%
Arrive 1h+ late
<1%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at MSY more than 15 minutes late?
Calm-weather odds: 6% · changed −10 pts in 24h
−10 pts
6%
Yes 6%
No 94%
Leave HOU more than 15 minutes late?
Calm-weather odds: 6% · changed −6 pts in 24h
−6 pts
6%
Yes 6%
No 94%
Arrive at MSY more than an hour late?
Calm-weather odds: <1% · changed −2 pts in 24h
−2 pts
<1%
Yes <1%
No 99%
Cancelled?
Calm-weather odds: <1% · changed −1 pt in 24h
−1 pt
<1%
Yes <1%
No 99%
How late will it get to MSY?
On time or early
93%
15–30 min late
3%
30 min–1 hour late
2%
1–2 hours late
<1%
Over 2 hours late
<1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
HOU is prone to delays
↓
Early flights usually leave on time
↓
Mostly benign weather forecast at MSY
Weather at each end
HOU (origin)
Gusts 22 kt Ceiling 5,000 ft Visibility 10+ mi Precip none
MSY (destination)
Gusts 20 kt Ceiling none (clear) 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.