Schedule: a typical summer Saturday (the flights of Jul 25, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1039
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3 Tomorrow
WN 1039 · GSP → BWI
departs 1:55 PM ET · arrives 3:25 PM ET
Forecast issued Fri 11:00 AM ET · 27h before departure
Watch this flight
Odds over time
Arrive at BWI more than 15 minutes late?
18%
chance · ±2 pts
−2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
18%
Leave 15+ late
11%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
4.7d
2d
Now
12h
6h
Departs
Lands
Arrive at BWI more than 15 minutes late?
Calm-weather odds: 10% · changed −2 pts in 24h
−2 pts
18%
Yes 18%
No 82%
Leave GSP more than 15 minutes late?
Calm-weather odds: 10% · changed −5 pts in 24h
−5 pts
11%
Yes 11%
No 89%
Arrive at BWI more than an hour late?
Calm-weather odds: 2% · changed −1 pt in 24h
−1 pt
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to BWI?
On time or early
82%
15–30 min late
12%
30 min–1 hour late
3%
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
↑
Cloud base down to 500 ft, 0.4 in of rain forecast at GSP that day
↑
Other factors
↑
Early flights usually leave on time
↓
1pm departures from GSP are usually not late
↓
Mostly benign weather forecast at BWI
Weather at each end
GSP (origin)
Gusts 11 kt Ceiling 500 ft Visibility 6 mi Precip 0.38 in
BWI (destination)
Gusts 15 kt Ceiling 3,833 ft Visibility 7 mi Precip 0.03 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.