Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3892
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Tomorrow
WN 3892 · STL → BOS
departs 2:30 PM CT · arrives 6:05 PM ET
Forecast issued Wed 12:00 AM ET · 40h before departure
Watch this flight
Other days
Today 11%
Thu 10/1
Fri 10/2 34%
Sat 10/3 35%
Sun 10/4 42%
Mon 10/5 42%
Tue 10/6 28%
Odds over time
Arrive at BOS more than 15 minutes late?
37%
chance · ±2 pts
−2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
37%
Leave 15+ late
42%
Arrive 1h+ late
11%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at BOS more than 15 minutes late?
Calm-weather odds: 23% · changed −2 pts in 24h
−2 pts
37%
Yes 37%
No 63%
Leave STL more than 15 minutes late?
Calm-weather odds: 32% · changed +2 pts in 24h
+2 pts
42%
Yes 42%
No 58%
Arrive at BOS more than an hour late?
Calm-weather odds: 5% · changed +2 pts in 24h
+2 pts
11%
Yes 11%
No 89%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to BOS?
On time or early
62%
15–30 min late
11%
30 min–1 hour late
15%
1–2 hours late
8%
Over 2 hours late
3%
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 48% of the time recently
↑
Mostly benign weather forecast at STL
↑
Arrivals into BOS at that hour are often late
↓
Visibility down to 1 mi forecast at BOS that day
↓
STL usually runs smoothly
Weather at each end
STL (origin)
Gusts 16 kt Ceiling 4,000 ft Visibility 10+ mi Precip 0.18 in
BOS (destination)
Gusts 16 kt Ceiling none (clear) Visibility 1 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.