Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
DELTA · FLIGHT DL 3138
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
DL 3138 · IND → ATL
departs 4:33 PM ET · arrives 6:15 PM ET
Forecast issued Wed 10:00 AM ET · 6h before departure
Watch this flight
Other days
Today
Thu 10/1 12%
Fri 10/2 13%
Sat 10/3 15%
Sun 10/4 13%
Mon 10/5 10%
Tue 10/6 10%
Odds over time
Arrive at ATL more than 15 minutes late?
14%
chance · ±0 pts
+8 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
14%
Leave 15+ late
17%
Arrive 1h+ late
4%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
2.9d
2d
1d
12h
Now
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 8% · changed +8 pts in 24h
+8 pts
14%
Yes 14%
No 86%
Leave IND more than 15 minutes late?
Calm-weather odds: 12% · changed +8 pts in 24h
+8 pts
17%
Yes 17%
No 83%
Arrive at ATL more than an hour late?
Calm-weather odds: 2% · changed +3 pts in 24h
+3 pts
4%
Yes 4%
No 96%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to ATL?
On time or early
86%
15–30 min late
4%
30 min–1 hour late
5%
1–2 hours late
3%
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
↑
Arrivals into ATL at that hour are often late
↑
Later flights pick up delays from earlier in the day
↑
4pm departures from IND are often late
↓
Wednesdays in September are usually quieter than average
↓
ATL usually runs smoothly
Weather at each end
IND (origin)
Gusts 13 kt Ceiling none (clear) Visibility 10+ mi Precip none
ATL (destination)
Gusts 11 kt Ceiling 300 ft Visibility 0.5 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.