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.
DELTA · FLIGHT DL 2331
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
DL 2331 · PHL → DTW
departs 12:27 PM ET · arrives 2:15 PM ET
Forecast issued Thu 9:00 AM ET · 52h before departure
Watch this flight
Other days
Today 28%
Fri 10/2 19%
Sat 10/3
Sun 10/4 15%
Mon 10/5 12%
Tue 10/6 8%
Wed 10/7 11%
Odds over time
Arrive at DTW more than 15 minutes late?
6%
chance · ±0 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
6%
Leave 15+ late
9%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
4.6d
Now
1d
12h
6h
Departs
Lands
Arrive at DTW more than 15 minutes late?
Calm-weather odds: 6% · changed – in 24h
–
6%
Yes 6%
No 94%
Leave PHL more than 15 minutes late?
Calm-weather odds: 6% · changed – in 24h
–
9%
Yes 9%
No 91%
Arrive at DTW more than an hour late?
Calm-weather odds: 2% · changed – in 24h
–
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to DTW?
On time or early
93%
15–30 min late
<1%
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
↓
Mostly benign weather forecast at PHL
↓
DL's recent on-time record
Weather at each end
PHL (origin)
Gusts 13 kt Ceiling 3,400 ft Visibility 10+ mi Precip 0.07 in
DTW (destination)
Gusts 9 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.