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 1499
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 1499 · DEN → BWI
departs 6:00 PM MT · arrives 11:40 PM ET
Forecast issued Wed 1:00 AM ET · 19h before departure
Watch this flight
Other days
Today
Thu 10/1 41%
Fri 10/2 38%
Sat 10/3 33%
Mon 10/5 32%
Tue 10/6 26%
Odds over time
Arrive at BWI more than 15 minutes late?
51%
chance · ±6 pts
−9 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
51%
Leave 15+ late
66%
Arrive 1h+ late
14%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
25%
50%
75%
100%
2.8d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at BWI more than 15 minutes late?
Calm-weather odds: 23% · changed −9 pts in 24h
−9 pts
51%
Yes 51%
No 49%
Leave DEN more than 15 minutes late?
Calm-weather odds: 32% · changed −7 pts in 24h
−7 pts
66%
Yes 66%
No 34%
Arrive at BWI more than an hour late?
Calm-weather odds: 4% · changed −6 pts in 24h
−6 pts
14%
Yes 14%
No 86%
Cancelled?
Calm-weather odds: <1% · changed −2 pts in 24h
−2 pts
<1%
Yes <1%
No 99%
How late will it get to BWI?
On time or early
48%
15–30 min late
18%
30 min–1 hour late
19%
1–2 hours late
9%
Over 2 hours late
4%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
0.3 in of rain forecast at DEN that day
↑
6pm departures from DEN are often late
↑
Later flights pick up delays from earlier in the day
↓
Wednesdays in September are usually quieter than average
↓
Mostly benign weather forecast at BWI
Weather at each end
DEN (origin)
Gusts 19 kt Ceiling 3,500 ft Visibility 10+ mi Precip 0.35 in
BWI (destination)
Gusts 10 kt Ceiling 6,000 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.