Schedule: the flights that flew on Saturday, Oct 24, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4327
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 31 Tomorrow
WN 4327 · MDW → SFO
departs 7:07 PM CT · arrives 9:35 PM PT
Forecast issued Fri 6:00 PM ET · 26h before departure
Watch this flight
Other days
Today 44%
Sat 10/31
Mon 11/2 45%
Tue 11/3 33%
Wed 11/4 41%
Thu 11/5 54%
Odds over time
Arrive at SFO more than 15 minutes late?
69%
chance · ±13 pts
+5 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
69%
Leave 15+ late
52%
Arrive 1h+ late
16%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
25%
50%
75%
100%
6.8d
2d
Now
12h
6h
Departs
Lands
Arrive at SFO more than 15 minutes late?
Calm-weather odds: 42% · changed +5 pts in 24h
+5 pts
69%
Yes 69%
No 31%
Leave MDW more than 15 minutes late?
Calm-weather odds: 42% · changed +5 pts in 24h
+5 pts
52%
Yes 52%
No 48%
Arrive at SFO more than an hour late?
Calm-weather odds: 9% · changed −2 pts in 24h
−2 pts
16%
Yes 16%
No 84%
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
31%
15–30 min late
31%
30 min–1 hour late
21%
1–2 hours late
8%
Over 2 hours late
8%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Arrivals into SFO at that hour are often late
↑
SFO is prone to delays
↑
7pm departures from MDW are often late
↓
Saturdays in October are usually quieter than average
↓
MDW is quiet at that time
Weather at each end
MDW (origin)
Gusts 11 kt Ceiling 7,000 ft Visibility 10+ mi Precip 0.07 in
SFO (destination)
Gusts 12 kt Ceiling 7,000 ft Visibility 10+ mi Precip 0.03 in
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.