Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 1604
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Today
DL 1604 · GSO → ATL
departs 7:59 PM ET · arrives 9:33 PM ET
Forecast issued Sun 12:00 AM ET · 20h before departure
Watch this flight
Other days
Today
Mon 10/5 11%
Fri 10/9 11%
Odds over time
Arrive at ATL more than 15 minutes late?
28%
chance · ±5 pts
−5 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
28%
Leave 15+ late
35%
Arrive 1h+ late
11%
Cancelled
2%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
5.9d
2d
Now
12h
6h
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 15% · changed −5 pts in 24h
−5 pts
28%
Yes 28%
No 72%
Leave GSO more than 15 minutes late?
Calm-weather odds: 22% · changed +2 pts in 24h
+2 pts
35%
Yes 35%
No 65%
Arrive at ATL more than an hour late?
Calm-weather odds: 8% · changed +1 pt in 24h
+1 pt
11%
Yes 11%
No 89%
Cancelled?
Calm-weather odds: <1% · changed −1 pt in 24h
−1 pt
2%
Yes 2%
No 98%
How late will it get to ATL?
On time or early
71%
15–30 min late
11%
30 min–1 hour late
6%
1–2 hours late
7%
Over 2 hours late
4%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 400 ft, 0.8 in of rain forecast at ATL that day
↑
Arrivals into ATL at that hour are often late
↑
Later flights pick up delays from earlier in the day
↓
ATL usually runs smoothly
↓
GSO usually runs smoothly
Weather at each end
GSO (origin)
Gusts 9 kt Ceiling 300 ft Visibility 3 mi Precip 0.07 in
ATL (destination)
Gusts 8 kt Ceiling 300 ft Visibility 2 mi Precip 0.78 in
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.