Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1589
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
WN 1589 · STL → SJU
departs 9:35 AM CT · arrives 3:00 PM AT
Forecast issued Wed 9:00 PM ET · 62h before departure
Watch this flight
Other days
Today 24%
Sat 10/3
Odds over time
Arrive at SJU more than 15 minutes late?
19%
chance · ±2 pts
+0 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
19%
Leave 15+ late
22%
Arrive 1h+ late
4%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
4.5d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at SJU more than 15 minutes late?
Calm-weather odds: 15% · changed +0 pts in 24h
+0 pts
19%
Yes 19%
No 81%
Leave STL more than 15 minutes late?
Calm-weather odds: 19% · changed +0 pts in 24h
+0 pts
22%
Yes 22%
No 78%
Arrive at SJU more than an hour late?
Calm-weather odds: 3% · changed +1 pt in 24h
+1 pt
4%
Yes 4%
No 96%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SJU?
On time or early
81%
15–30 min late
13%
30 min–1 hour late
2%
1–2 hours late
3%
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
↑
This flight has been late 19% of the time recently
↑
Mostly benign weather forecast at SJU
↑
SJU is prone to delays
↓
Mostly benign weather forecast at STL
↓
WN's recent on-time record
Weather at each end
STL (origin)
Gusts 9 kt Ceiling none (clear) Visibility 10+ mi Precip none
SJU (destination)
Gusts 13 kt Ceiling 6,000 ft Visibility 10+ mi Precip 0.08 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.