Schedule: a typical summer Monday (the flights of Jul 27, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 1537
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5
DL 1537 · TRI → ATL
departs 6:00 AM ET · arrives 7:09 AM ET
Forecast issued Sat 12:00 AM ET · 54h before departure
Watch this flight
Other days
Today 16%
Sun 10/4 16%
Mon 10/5
Tue 10/6 5%
Wed 10/7 5%
Thu 10/8 5%
Fri 10/9 6%
Odds over time
Arrive at ATL more than 15 minutes late?
10%
chance · ±3 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
10%
Leave 15+ late
10%
Arrive 1h+ late
8%
Cancelled
2%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
6.2d
Now
1d
12h
6h
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 4% · changed – in 24h
–
10%
Yes 10%
No 90%
Leave TRI more than 15 minutes late?
Calm-weather odds: 6% · changed – in 24h
–
10%
Yes 10%
No 90%
Arrive at ATL more than an hour late?
Calm-weather odds: 2% · changed – in 24h
–
8%
Yes 8%
No 92%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
2%
Yes 2%
No 98%
How late will it get to ATL?
On time or early
88%
15–30 min late
3%
30 min–1 hour late
0%
1–2 hours late
3%
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 300 ft, visibility down to 2 mi, 0.7 in of rain forecast at ATL that day
↑
Cloud base down to 200 ft, visibility down to 0.3 mi forecast at TRI that day
↑
ATL is busy at that time
↓
Early flights usually leave on time
↓
DL's recent on-time record
Weather at each end
TRI (origin)
Gusts 13 kt Ceiling 200 ft Visibility 0.3 mi Precip 0.01 in
ATL (destination)
Gusts 14 kt Ceiling 300 ft Visibility 2 mi Precip 0.67 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.