Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4937
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Today
WN 4937 · CLT → BWI
departs 7:55 PM ET · arrives 9:30 PM ET
Forecast issued Sun 3:00 AM ET · 17h before departure
Watch this flight
Odds over time
Arrive at BWI more than 15 minutes late?
53%
chance · ±5 pts
−3 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
53%
Leave 15+ late
58%
Arrive 1h+ late
13%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
5.9d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at BWI more than 15 minutes late?
Calm-weather odds: 42% · changed −3 pts in 24h
−3 pts
53%
Yes 53%
No 47%
Leave CLT more than 15 minutes late?
Calm-weather odds: 49% · changed −1 pt in 24h
−1 pt
58%
Yes 58%
No 42%
Arrive at BWI more than an hour late?
Calm-weather odds: 10% · changed −4 pts in 24h
−4 pts
13%
Yes 13%
No 87%
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
47%
15–30 min late
25%
30 min–1 hour late
15%
1–2 hours late
10%
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
↑
Arrivals into BWI at that hour are often late
↑
Later flights pick up delays from earlier in the day
↑
WN's recent on-time record
↓
Sundays in October are usually quieter than average
Weather at each end
CLT (origin)
Gusts 10 kt Ceiling 400 ft Visibility 2.5 mi Precip 0.18 in
BWI (destination)
Gusts 13 kt Ceiling 300 ft Visibility 3 mi Precip 0.15 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.