Schedule: a typical summer Saturday (the flights of Jul 25, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 2278
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3 Tomorrow
WN 2278 · PHL → STL
departs 1:45 PM ET · arrives 3:05 PM CT
Forecast issued Fri 1:00 PM ET · 25h before departure
Watch this flight
Odds over time
Arrive at STL more than 15 minutes late?
14%
chance · ±1 pts
+1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
14%
Leave 15+ late
17%
Arrive 1h+ late
4%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
4.7d
2d
Now
12h
6h
Departs
Lands
Arrive at STL more than 15 minutes late?
Calm-weather odds: 10% · changed +1 pt in 24h
+1 pt
14%
Yes 14%
No 86%
Leave PHL more than 15 minutes late?
Calm-weather odds: 13% · changed −5 pts in 24h
−5 pts
17%
Yes 17%
No 83%
Arrive at STL more than an hour late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 pts
4%
Yes 4%
No 96%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to STL?
On time or early
85%
15–30 min late
7%
30 min–1 hour late
3%
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
↑
1pm departures from PHL are often late
↑
Arrivals into STL at that hour are often late
↑
This flight has been late 32% of the time recently
↓
Mostly benign weather forecast at PHL
↓
Saturdays in October are usually quieter than average
Weather at each end
PHL (origin)
Gusts 13 kt Ceiling 6,000 ft Visibility 10+ mi Precip 0.02 in
STL (destination)
Gusts 10 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.