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.
DELTA · FLIGHT DL 2539
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3 Tomorrow
DL 2539 · ATL → GSO
departs 2:15 PM ET · arrives 3:30 PM ET
Forecast issued Fri 9:00 PM ET · 17h before departure
Watch this flight
Other days
Today 12%
Sat 10/3
Sun 10/4 28%
Mon 10/5 13%
Tue 10/6 10%
Wed 10/7 12%
Thu 10/8 9%
Odds over time
Arrive at GSO more than 15 minutes late?
15%
chance · ±1 pts
+2 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
15%
Leave 15+ late
19%
Arrive 1h+ late
6%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
4.7d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at GSO more than 15 minutes late?
Calm-weather odds: 8% · changed +2 pts in 24h
+2 pts
15%
Yes 15%
No 85%
Leave ATL more than 15 minutes late?
Calm-weather odds: 10% · changed +1 pt in 24h
+1 pt
19%
Yes 19%
No 81%
Arrive at GSO more than an hour late?
Calm-weather odds: 2% · changed +1 pt in 24h
+1 pt
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to GSO?
On time or early
84%
15–30 min late
5%
30 min–1 hour late
4%
1–2 hours late
4%
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
↑
Cloud base down to 500 ft forecast at GSO that day
↑
Other factors
↑
Later flights pick up delays from earlier in the day
↓
DL's recent on-time record
↓
GSO usually runs smoothly
Weather at each end
ATL (origin)
Gusts 8 kt Ceiling 200 ft Visibility 0.2 mi Precip 0.05 in
GSO (destination)
Gusts 17 kt Ceiling 500 ft Visibility 5 mi Precip 0.16 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.