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.
SOUTHWEST · FLIGHT WN 3334
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 3334 · PHX → SFO
departs 1:00 PM MT · arrives 3:00 PM PT
Forecast issued Wed 5:00 AM ET · 11h before departure
Watch this flight
Other days
Today
Thu 10/1 33%
Fri 10/2 27%
Sun 10/4 33%
Mon 10/5 27%
Tue 10/6 22%
Odds over time
Arrive at SFO more than 15 minutes late?
33%
chance · ±2 pts
+5 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
33%
Leave 15+ late
35%
Arrive 1h+ late
9%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
1d
Now
6h
Departs
Lands
Arrive at SFO more than 15 minutes late?
Calm-weather odds: 32% · changed +5 pts in 24h
+5 pts
33%
Yes 33%
No 67%
Leave PHX more than 15 minutes late?
Calm-weather odds: 35% · changed −2 pts in 24h
−2 pts
35%
Yes 35%
No 65%
Arrive at SFO more than an hour late?
Calm-weather odds: 8% · changed +1 pt in 24h
+1 pt
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SFO?
On time or early
67%
15–30 min late
14%
30 min–1 hour late
10%
1–2 hours late
8%
Over 2 hours late
2%
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 38% of the time recently
↑
Arrivals into SFO at that hour are often late
↑
1pm departures from PHX are often late
↓
Cloud base down to 1,300 ft forecast at SFO that day
↓
Wednesdays in September are usually quieter than average
Weather at each end
PHX (origin)
Gusts 6 kt Ceiling none (clear) Visibility 10+ mi Precip none
SFO (destination)
Gusts 13 kt Ceiling 1,300 ft Visibility 7 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.