Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 1913
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
DL 1913 · DTW → SJU
departs 8:35 AM ET · arrives 1:11 PM AT
Forecast issued Fri 2:00 AM ET · 55h before departure
Watch this flight
Other days
Today 37%
Sat 10/3 11%
Sun 10/4
Mon 10/5 12%
Tue 10/6 11%
Wed 10/7 13%
Odds over time
Arrive at SJU more than 15 minutes late?
8%
chance · ±1 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
8%
Leave 15+ late
13%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
5.4d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at SJU more than 15 minutes late?
Calm-weather odds: 10% · changed – in 24h
–
8%
Yes 8%
No 92%
Leave DTW more than 15 minutes late?
Calm-weather odds: 13% · changed – in 24h
–
13%
Yes 13%
No 87%
Arrive at SJU more than an hour late?
Calm-weather odds: 3% · changed – in 24h
–
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to SJU?
On time or early
91%
15–30 min late
2%
30 min–1 hour late
3%
1–2 hours late
2%
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
↑
This flight has been late 24% of the time recently
↑
Arrivals into SJU at that hour are often late
↑
Mostly benign weather forecast at SJU
↓
Mostly benign weather forecast at DTW
↓
DTW usually runs smoothly
Weather at each end
DTW (origin)
Gusts 16 kt Ceiling none (clear) Visibility 10+ mi Precip none
SJU (destination)
Gusts 13 kt Ceiling 2,200 ft Visibility 10+ mi Precip 0.10 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.