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 27
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 27 · HOU → BWI
departs 5:45 PM CT · arrives 10:00 PM ET
Forecast issued Tue 11:00 PM ET · 20h before departure
Watch this flight
Other days
Today
Tue 10/6 19%
Odds over time
Arrive at BWI more than 15 minutes late?
34%
chance · ±2 pts
+2 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
34%
Leave 15+ late
47%
Arrive 1h+ late
8%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at BWI more than 15 minutes late?
Calm-weather odds: 16% · changed +2 pts in 24h
+2 pts
34%
Yes 34%
No 66%
Leave HOU more than 15 minutes late?
Calm-weather odds: 23% · changed +8 pts in 24h
+8 pts
47%
Yes 47%
No 53%
Arrive at BWI more than an hour late?
Calm-weather odds: 3% · changed +1 pt in 24h
+1 pt
8%
Yes 8%
No 92%
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
66%
15–30 min late
18%
30 min–1 hour late
8%
1–2 hours late
5%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Gusts to 25 kt, 0.4 in of rain forecast at HOU that day
↑
Later flights pick up delays from earlier in the day
↑
5pm departures from HOU are often late
↓
Wednesdays in September are usually quieter than average
↓
Mostly benign weather forecast at BWI
Weather at each end
HOU (origin)
Gusts 25 kt Ceiling 7,000 ft Visibility 10+ mi Precip 0.37 in
BWI (destination)
Gusts 10 kt Ceiling 7,714 ft Visibility 5 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.