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 1787
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
DL 1787 · DTW → IAD
departs 3:08 PM ET · arrives 4:41 PM ET
Forecast issued Fri 9:00 AM ET · 6h before departure
Watch this flight
Other days
Today
Sun 10/4 19%
Mon 10/5 17%
Tue 10/6 13%
Wed 10/7 18%
Thu 10/8 16%
Odds over time
Arrive at IAD more than 15 minutes late?
31%
chance · ±0 pts
+11 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
31%
Leave 15+ late
25%
Arrive 1h+ late
6%
Cancelled
5%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
3.7d
2d
1d
12h
Now
Departs
Lands
Arrive at IAD more than 15 minutes late?
Calm-weather odds: 15% · changed +11 pts in 24h
+11 pts
31%
Yes 31%
No 69%
Leave DTW more than 15 minutes late?
Calm-weather odds: 18% · changed +7 pts in 24h
+7 pts
25%
Yes 25%
No 75%
Arrive at IAD more than an hour late?
Calm-weather odds: 6% · changed −2 pts in 24h
−2 pts
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed +4 pts in 24h
+4 pts
5%
Yes 5%
No 95%
How late will it get to IAD?
On time or early
66%
15–30 min late
15%
30 min–1 hour late
8%
1–2 hours late
4%
Over 2 hours late
2%
Cancelled
5%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
3pm departures from DTW are often late
↑
Later flights pick up delays from earlier in the day
↑
IAD is prone to delays
↓
This flight has been late 16% of the time recently
↓
DTW usually runs smoothly
Weather at each end
DTW (origin)
Gusts 27 kt Ceiling 800 ft Visibility 1.5 mi Precip 1.79 in
IAD (destination)
Gusts 15 kt Ceiling 1,500 ft Visibility 9 mi Precip 0.03 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.