Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 1309
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
DL 1309 · ATL → IAD
departs 7:15 PM ET · arrives 9:03 PM ET
Forecast issued Fri 2:00 PM ET · 5h before departure
Watch this flight
Other days
Today
Sun 10/4 41%
Mon 10/5 19%
Tue 10/6 14%
Wed 10/7 12%
Thu 10/8 16%
Odds over time
Arrive at IAD more than 15 minutes late?
46%
chance · ±0 pts
+22 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
46%
Leave 15+ late
36%
Arrive 1h+ late
11%
Cancelled
6%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
3.9d
2d
1d
12h
Now
Departs
Lands
Arrive at IAD more than 15 minutes late?
Calm-weather odds: 22% · changed +22 pts in 24h
+22 pts
46%
Yes 46%
No 54%
Leave ATL more than 15 minutes late?
Calm-weather odds: 22% · changed +11 pts in 24h
+11 pts
36%
Yes 36%
No 64%
Arrive at IAD more than an hour late?
Calm-weather odds: 5% · changed +4 pts in 24h
+4 pts
11%
Yes 11%
No 89%
Cancelled?
Calm-weather odds: <1% · changed +5 pts in 24h
+5 pts
6%
Yes 6%
No 94%
How late will it get to IAD?
On time or early
51%
15–30 min late
31%
30 min–1 hour late
3%
1–2 hours late
9%
Over 2 hours late
2%
Cancelled
6%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Later flights pick up delays from earlier in the day
↑
7pm departures from ATL are often late
↑
This flight has been late 23% of the time recently
↓
ATL usually runs smoothly
↓
Cloud base down to 600 ft forecast at ATL that day
Weather at each end
ATL (origin)
Gusts 8 kt Ceiling 600 ft Visibility 5 mi Precip none
IAD (destination)
Gusts 15 kt Ceiling 6,000 ft Visibility 10+ mi Precip 0.02 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.