Schedule: a typical Tuesday (the flights of Jul 28, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4717
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29 Today
WN 4717 · LAS → SEA
departs 4:40 PM PT · arrives 7:20 PM PT
Forecast issued Tue 6:00 PM ET · 2h before departure
Watch this flight
Other days
Today
Wed 9/30 41%
Sat 10/3 19%
Odds over time
Arrive at SEA more than 15 minutes late?
78%
chance · ±0 pts
+19 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
78%
Leave 15+ late
66%
Arrive 1h+ late
38%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
25%
50%
75%
100%
2.9d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at SEA more than 15 minutes late?
Calm-weather odds: 69% · changed +19 pts in 24h
+19 pts
78%
Yes 78%
No 22%
Leave LAS more than 15 minutes late?
Calm-weather odds: 65% · changed +6 pts in 24h
+6 pts
66%
Yes 66%
No 34%
Arrive at SEA more than an hour late?
Calm-weather odds: 25% · changed +22 pts in 24h
+22 pts
38%
Yes 38%
No 62%
Cancelled?
Calm-weather odds: 1% · changed +0 pts in 24h
+0 pts
1%
Yes 1%
No 99%
How late will it get to SEA?
On time or early
22%
15–30 min late
31%
30 min–1 hour late
9%
1–2 hours late
32%
Over 2 hours late
6%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Gusts to 27 kt forecast at LAS that day
↑
LAS is prone to delays
↑
4pm departures from LAS are often late
↓
Tuesdays in September are usually quieter than average
Weather at each end
LAS (origin)
Gusts 27 kt Ceiling 4,700 ft Visibility 7 mi Precip 0.10 in
SEA (destination)
Gusts 24 kt Ceiling 1,000 ft Visibility 6 mi Precip 0.03 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.