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 1663
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30
DL 1663 · ATL → CHS
departs 8:51 PM ET · arrives 10:07 PM ET
Forecast issued Wed 10:00 PM ET · 1h after departure
Watch this flight
Other days
Wed 9/30
Today 38%
Mon 10/5 15%
Fri 10/9 21%
Sat 10/10 22%
Odds over time
Arrive at CHS more than 15 minutes late?
18%
chance · ±1 pts
+3 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
18%
Leave 15+ late
18%
Arrive 1h+ late
3%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at CHS more than 15 minutes late?
Calm-weather odds: 19% · changed +3 pts in 24h
+3 pts
18%
Yes 18%
No 82%
Leave ATL more than 15 minutes late?
Calm-weather odds: 17% · changed +1 pt in 24h
+1 pt
18%
Yes 18%
No 82%
Arrive at CHS more than an hour late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 pts
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 CHS?
On time or early
81%
15–30 min late
10%
30 min–1 hour late
5%
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
↑
8pm departures from ATL are often late
↑
Later flights pick up delays from earlier in the day
↑
Arrivals into CHS at that hour are often late
↓
Cloud base down to 200 ft, visibility down to 0.5 mi forecast at ATL that day
↓
Mostly benign weather forecast at CHS
Weather at each end
ATL (origin)
Gusts 9 kt Ceiling 200 ft Visibility 0.5 mi Precip none
CHS (destination)
Gusts 8 kt Ceiling 7,000 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.