Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 663
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
WN 663 · BNA → SAT
departs 8:05 AM CT · arrives 10:25 AM CT
Forecast issued Thu 8:00 PM ET · 37h before departure
Watch this flight
Other days
Today 11%
Fri 10/2 24%
Sat 10/3
Mon 10/5 7%
Tue 10/6 6%
Wed 10/7 5%
Odds over time
Arrive at SAT more than 15 minutes late?
17%
chance · ±3 pts
+4 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
17%
Leave 15+ late
9%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
4.5d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SAT more than 15 minutes late?
Calm-weather odds: 3% · changed +4 pts in 24h
+4 pts
17%
Yes 17%
No 83%
Leave BNA more than 15 minutes late?
Calm-weather odds: 6% · changed +0 pts in 24h
+0 pts
9%
Yes 9%
No 91%
Arrive at SAT more than an hour late?
Calm-weather odds: 1% · changed +1 pt in 24h
+1 pt
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SAT?
On time or early
82%
15–30 min late
11%
30 min–1 hour late
3%
1–2 hours late
2%
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 500 ft forecast at SAT that day
↑
Cloud base down to 500 ft, 0.4 in of rain forecast at BNA that day
↑
SAT is prone to delays
↓
WN's recent on-time record
↓
Arrivals into SAT at that hour are usually not late
Weather at each end
BNA (origin)
Gusts 10 kt Ceiling 500 ft Visibility 4 mi Precip 0.43 in
SAT (destination)
Gusts 21 kt Ceiling 500 ft Visibility 9 mi Precip 0.22 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.