Schedule: a typical summer Thursday (the flights of Jul 30, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4209
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Yesterday
WN 4209 · SDF → BWI
departs 5:05 PM ET · arrives 6:45 PM ET
Forecast issued Thu 10:00 PM ET · 5h after departure
Watch this flight
Other days
Thu 10/1
Today 30%
Sun 10/4 18%
Mon 10/5 12%
Odds over time
Arrive at BWI more than 15 minutes late?
16%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
16%
Leave 15+ late
22%
Arrive 1h+ late
6%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at BWI more than 15 minutes late?
Calm-weather odds: 15% · changed +0 pts in 24h
+0 pts
16%
Yes 16%
No 84%
Leave SDF more than 15 minutes late?
Calm-weather odds: 22% · changed −2 pts in 24h
−2 pts
22%
Yes 22%
No 78%
Arrive at BWI more than an hour late?
Calm-weather odds: 6% · changed +0 pts in 24h
+0 pts
6%
Yes 6%
No 94%
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
84%
15–30 min late
5%
30 min–1 hour late
5%
1–2 hours late
5%
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
↑
Later flights pick up delays from earlier in the day
↑
Arrivals into BWI at that hour are often late
↑
WN's recent on-time record
↓
SDF usually runs smoothly
↓
Mostly benign weather forecast at BWI
Weather at each end
SDF (origin)
Gusts 20 kt Ceiling none (clear) Visibility 10+ mi Precip none
BWI (destination)
Gusts 7 kt Ceiling none (clear) Visibility 6 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.