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 1221
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3 Today
DL 1221 · MKE → ATL
departs 5:45 AM CT · arrives 8:46 AM ET
Forecast issued Sat 1:00 AM ET · 6h before departure
Watch this flight
Other days
Today
Sun 10/4 11%
Mon 10/5 5%
Tue 10/6 4%
Wed 10/7 4%
Thu 10/8 4%
Fri 10/9 4%
Odds over time
Arrive at ATL more than 15 minutes late?
7%
chance · ±0 pts
+1 pt · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
7%
Leave 15+ late
6%
Arrive 1h+ late
2%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
4.4d
2d
1d
12h
Now
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 5% · changed +1 pt in 24h
+1 pt
7%
Yes 7%
No 93%
Leave MKE more than 15 minutes late?
Calm-weather odds: 5% · changed +1 pt in 24h
+1 pt
6%
Yes 6%
No 94%
Arrive at ATL more than an hour late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
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
93%
15–30 min late
3%
30 min–1 hour late
2%
1–2 hours late
<1%
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 300 ft, visibility down to 1 mi forecast at ATL that day
↑
Other factors
↓
Early flights usually leave on time
↓
Mostly benign weather forecast at MKE
Weather at each end
MKE (origin)
Gusts 14 kt Ceiling none (clear) Visibility 10+ mi Precip none
ATL (destination)
Gusts 8 kt Ceiling 500 ft Visibility 4 mi Precip 0.05 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.