Schedule: a typical Tuesday (the flights of Jul 28, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
DELTA · FLIGHT DL 2426
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29
DL 2426 · ORD → ATL
departs 8:03 AM CT · arrives 11:06 AM ET
Forecast issued Tue 10:00 PM ET · 13h after departure
Watch this flight
Other days
Tue 9/29
Today 60%
Fri 10/2 13%
Sun 10/4 16%
Mon 10/5 13%
Tue 10/6 12%
Wed 10/7 16%
Odds over time
Arrive at ATL more than 15 minutes late?
14%
chance · ±0 pts
+6 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
14%
Leave 15+ late
9%
Arrive 1h+ late
3%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 13% · changed +6 pts in 24h
+6 pts
14%
Yes 14%
No 86%
Leave ORD more than 15 minutes late?
Calm-weather odds: 9% · changed −1 pt in 24h
−1 pt
9%
Yes 9%
No 91%
Arrive at ATL more than an hour late?
Calm-weather odds: 3% · changed +1 pt in 24h
+1 pt
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 ATL?
On time or early
85%
15–30 min late
5%
30 min–1 hour late
6%
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
↑
8am departures from ORD are often late
↑
Cloud base down to 100 ft, visibility down to 0.5 mi forecast at ORD that day
↑
ORD is busy at that time
↓
Mostly benign weather forecast at ATL
↓
Tuesdays in September are usually quieter than average
Weather at each end
ORD (origin)
Gusts 16 kt Ceiling 100 ft Visibility 0.5 mi Precip none
ATL (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.