Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4145
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Tomorrow
WN 4145 · SFO → PHX
departs 5:30 AM PT · arrives 7:30 AM MT
Forecast issued Wed 8:00 PM ET · 12h before departure
Watch this flight
Other days
Today 5%
Thu 10/1
Fri 10/2 4%
Sun 10/4 3%
Mon 10/5 3%
Tue 10/6 3%
Odds over time
Arrive at PHX more than 15 minutes late?
9%
chance · ±0 pts
+6 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
9%
Leave 15+ late
6%
Arrive 1h+ late
2%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
2.9d
2d
1d
Now
6h
Departs
Lands
Arrive at PHX more than 15 minutes late?
Calm-weather odds: 3% · changed +6 pts in 24h
+6 pts
9%
Yes 9%
No 91%
Leave SFO more than 15 minutes late?
Calm-weather odds: 3% · changed +3 pts in 24h
+3 pts
6%
Yes 6%
No 94%
Arrive at PHX more than an hour late?
Calm-weather odds: <1% · 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 100%
How late will it get to PHX?
On time or early
91%
15–30 min late
7%
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
↑
PHX is prone to delays
↑
This flight has been late 12% of the time recently
↑
SFO is prone to delays
↓
Early flights usually leave on time
↓
5am departures from SFO are usually not late
Weather at each end
SFO (origin)
Gusts 11 kt Ceiling 500 ft Visibility 7 mi Precip none
PHX (destination)
Gusts 6 kt Ceiling none (clear) 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.