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 1577
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
WN 1577 · SAT → DEN
departs 9:05 AM CT · arrives 10:15 AM MT
Forecast issued Fri 8:00 PM ET · 10h after departure
Watch this flight
Other days
Today
Mon 10/5 10%
Odds over time
Arrive at DEN more than 15 minutes late?
18%
chance · ±0 pts
−7 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
18%
Leave 15+ late
17%
Arrive 1h+ late
4%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
3.5d
2d
1d
12h
6h
Departs
Lands
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 18% · changed −7 pts in 24h
−7 pts
18%
Yes 18%
No 82%
Leave SAT more than 15 minutes late?
Calm-weather odds: 17% · changed −11 pts in 24h
−11 pts
17%
Yes 17%
No 83%
Arrive at DEN more than an hour late?
Calm-weather odds: 4% · changed +0 pts in 24h
+0 pts
4%
Yes 4%
No 96%
Cancelled?
Calm-weather odds: 1% · changed −1 pt in 24h
−1 pt
1%
Yes 1%
No 99%
How late will it get to DEN?
On time or early
81%
15–30 min late
8%
30 min–1 hour late
5%
1–2 hours late
3%
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
↑
Cloud base down to 400 ft, 0.5 in of rain forecast at SAT that day
↑
Arrivals into DEN at that hour are often late
↑
DEN is busy at that time
↓
Gusts to 29 kt forecast at DEN that day
↓
9am departures from SAT are usually not late
Weather at each end
SAT (origin)
Gusts 18 kt Ceiling 200 ft Visibility 0.25 mi Precip 0.69 in
DEN (destination)
Gusts 17 kt Ceiling none (clear) Visibility 10+ 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.