Schedule: a typical Tuesday (the flights of Jul 28, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
DELTA · FLIGHT DL 2155
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29 Yesterday
DL 2155 · DTW → SAN
departs 12:30 PM ET · arrives 2:09 PM PT
Forecast issued Tue 10:00 PM ET · 10h after departure
Watch this flight
Other days
Tue 9/29
Today 23%
Thu 10/1 22%
Fri 10/2 20%
Sat 10/3 16%
Sun 10/4 25%
Mon 10/5 19%
Tue 10/6 15%
Odds over time
Arrive at SAN more than 15 minutes late?
13%
chance · ±0 pts
−2 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
13%
Leave 15+ late
13%
Arrive 1h+ late
3%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
2.7d
2d
1d
12h
6h
Departs
Lands
Arrive at SAN more than 15 minutes late?
Calm-weather odds: 13% · changed −2 pts in 24h
−2 pts
13%
Yes 13%
No 87%
Leave DTW more than 15 minutes late?
Calm-weather odds: 13% · changed +0 pts in 24h
+0 pts
13%
Yes 13%
No 87%
Arrive at SAN more than an hour late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 pts
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SAN?
On time or early
86%
15–30 min late
8%
30 min–1 hour late
3%
1–2 hours late
1%
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 SAN at that hour are often late
↑
SAN is prone to delays
↑
12pm departures from DTW are often late
↓
Mostly benign weather forecast at DTW
↓
Tuesdays in September are usually quieter than average
Weather at each end
DTW (origin)
Gusts 9 kt Ceiling none (clear) Visibility 9 mi Precip none
SAN (destination)
Gusts 22 kt Ceiling 1,700 ft Visibility 10+ 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.