Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
DELTA · FLIGHT DL 1254
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
DL 1254 · SLC → SJC
departs 11:40 AM MT · arrives 12:35 PM PT
Forecast issued Wed 1:00 PM ET · 1h before departure
Watch this flight
Other days
Today
Thu 10/1 10%
Fri 10/2 9%
Sat 10/3 11%
Sun 10/4 14%
Mon 10/5 8%
Tue 10/6 7%
Odds over time
Arrive at SJC more than 15 minutes late?
10%
chance · ±1 pts
−1 pt · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
10%
Leave 15+ late
9%
Arrive 1h+ late
2%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
2.9d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at SJC more than 15 minutes late?
Calm-weather odds: 10% · changed −1 pt in 24h
−1 pt
10%
Yes 10%
No 90%
Leave SLC more than 15 minutes late?
Calm-weather odds: 9% · changed +1 pt in 24h
+1 pt
9%
Yes 9%
No 91%
Arrive at SJC more than an hour late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SJC?
On time or early
90%
15–30 min late
5%
30 min–1 hour late
2%
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
↑
DL's recent on-time record
↑
SLC is busy at that time
↓
Mostly benign weather forecast at SLC
↓
Wednesdays in September are usually quieter than average
Weather at each end
SLC (origin)
Gusts 16 kt Ceiling none (clear) Visibility 10+ mi Precip none
SJC (destination)
Gusts 13 kt Ceiling none (clear) Visibility 9 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.