Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3660
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2
WN 3660 · DCA → DAL
departs 2:00 PM ET · arrives 4:10 PM CT
Forecast issued Fri 10:00 PM ET · 8h after departure
Watch this flight
Other days
Fri 10/2
Mon 10/5 27%
Fri 10/9 25%
Odds over time
Arrive at DAL more than 15 minutes late?
52%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
52%
Leave 15+ late
40%
Arrive 1h+ late
16%
Cancelled
2%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
3.7d
2d
1d
12h
6h
Departs
Lands
Arrive at DAL more than 15 minutes late?
Calm-weather odds: 52% · changed +0 pts in 24h
+0 pts
52%
Yes 52%
No 48%
Leave DCA more than 15 minutes late?
Calm-weather odds: 40% · changed −7 pts in 24h
−7 pts
40%
Yes 40%
No 60%
Arrive at DAL more than an hour late?
Calm-weather odds: 16% · changed −6 pts in 24h
−6 pts
16%
Yes 16%
No 84%
Cancelled?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
How late will it get to DAL?
On time or early
46%
15–30 min late
23%
30 min–1 hour late
12%
1–2 hours late
11%
Over 2 hours late
5%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 600 ft, visibility down to 2.5 mi, 0.9 in of rain forecast at DAL that day
↑
2pm departures from DCA are often late
↑
This flight has been late 30% of the time recently
Weather at each end
DCA (origin)
Gusts 28 kt Ceiling 3,300 ft Visibility 2.5 mi Precip 0.76 in
DAL (destination)
Gusts 22 kt Ceiling 600 ft Visibility 4 mi Precip 0.24 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.