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.
SOUTHWEST · FLIGHT WN 2978
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29 Yesterday
WN 2978 · PHX → SJC
departs 5:25 AM MT · arrives 7:15 AM PT
Forecast issued Tue 10:00 PM ET · 14h after departure
Watch this flight
Other days
Tue 9/29
Today 2%
Thu 10/1 6%
Fri 10/2 6%
Sat 10/3 5%
Mon 10/5 6%
Tue 10/6 3%
Odds over time
Arrive at SJC more than 15 minutes late?
6%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
6%
Leave 15+ late
5%
Arrive 1h+ late
2%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at SJC more than 15 minutes late?
Calm-weather odds: 6% · changed +0 pts in 24h
+0 pts
6%
Yes 6%
No 94%
Leave PHX more than 15 minutes late?
Calm-weather odds: 5% · changed +1 pt in 24h
+1 pt
5%
Yes 5%
No 95%
Arrive at SJC more than an hour late?
Calm-weather odds: 2% · changed +1 pt in 24h
+1 pt
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
93%
15–30 min late
3%
30 min–1 hour late
1%
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
↑
Cloud base down to 1,300 ft, visibility down to 0.5 mi, 0.3 in of rain, thunderstorms forecast at PHX that day
↑
PHX is busy at that time
↑
Other factors
↓
Early flights usually leave on time
↓
5am departures from PHX are usually not late
Weather at each end
PHX (origin)
Gusts 21 kt Ceiling 1,300 ft Visibility 0.5 mi Precip 0.34 in
SJC (destination)
Gusts 12 kt Ceiling none (clear) Visibility 8 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.