Schedule: a typical summer Wednesday (the flights of Jul 29, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 3148
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30
DL 3148 · DTW → ROC
departs 9:30 PM ET · arrives 10:47 PM ET
Forecast issued Wed 10:00 PM ET · 0h before departure
Watch this flight
Other days
Wed 9/30
Today 25%
Sat 10/3 16%
Sun 10/4 22%
Mon 10/5 18%
Tue 10/6 14%
Wed 10/7 14%
Odds over time
Arrive at ROC more than 15 minutes late?
26%
chance · ±1 pts
+2 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
26%
Leave 15+ late
25%
Arrive 1h+ late
6%
Cancelled
2%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at ROC more than 15 minutes late?
Calm-weather odds: 25% · changed +2 pts in 24h
+2 pts
26%
Yes 26%
No 74%
Leave DTW more than 15 minutes late?
Calm-weather odds: 24% · changed +1 pt in 24h
+1 pt
25%
Yes 25%
No 75%
Arrive at ROC more than an hour late?
Calm-weather odds: 6% · changed −1 pt in 24h
−1 pt
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed +1 pt in 24h
+1 pt
2%
Yes 2%
No 98%
How late will it get to ROC?
On time or early
73%
15–30 min late
12%
30 min–1 hour late
8%
1–2 hours late
4%
Over 2 hours late
2%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Later flights pick up delays from earlier in the day
↑
DL's recent on-time record
↑
9pm departures from DTW are often late
↓
Wednesdays in September are usually quieter than average
↓
DTW usually runs smoothly
Weather at each end
DTW (origin)
Gusts 8 kt Ceiling 2,800 ft Visibility 6 mi Precip 0.04 in
ROC (destination)
Gusts 12 kt Ceiling 5,000 ft Visibility 4 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.