Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 623
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Tomorrow
WN 623 · BNA → PHL
departs 10:05 AM CT · arrives 1:10 PM ET
Forecast issued Tue 5:00 PM ET · 18h before departure
Watch this flight
Other days
Today 19%
Wed 9/30
Thu 10/1 13%
Fri 10/2 17%
Sat 10/3 12%
Mon 10/5 15%
Odds over time
Arrive at PHL more than 15 minutes late?
16%
chance · ±1 pts
+7 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
16%
Leave 15+ late
11%
Arrive 1h+ late
2%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
2.9d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at PHL more than 15 minutes late?
Calm-weather odds: 15% · changed +7 pts in 24h
+7 pts
16%
Yes 16%
No 84%
Leave BNA more than 15 minutes late?
Calm-weather odds: 13% · changed +2 pts in 24h
+2 pts
11%
Yes 11%
No 89%
Arrive at PHL more than an hour late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to PHL?
On time or early
83%
15–30 min late
11%
30 min–1 hour late
3%
1–2 hours late
1%
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
↑
This flight has been late 33% of the time recently
↑
PHL is prone to delays
↑
10am departures from BNA are often late
↓
Wednesdays in September are usually quieter than average
↓
Mostly benign weather forecast at PHL
Weather at each end
BNA (origin)
Gusts 11 kt Ceiling none (clear) Visibility 10+ mi Precip none
PHL (destination)
Gusts 7 kt Ceiling 6,000 ft 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.