Schedule: the flights that flew on Tuesday, Sep 29, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3431
SCHEDULED · TYPICAL SCHEDULE
Tuesday, October 6
WN 3431 · SAN → MDW
departs 11:08 PM PT · arrives 4:54 AM CT
Forecast issued Sun 12:00 PM ET · 62h before departure
Watch this flight
Other days
Tue 10/6
Wed 10/7 10%
Odds over time
Arrive at MDW more than 15 minutes late?
10%
chance · ±1 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
10%
Leave 15+ late
11%
Arrive 1h+ late
2%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
4.6d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at MDW more than 15 minutes late?
Calm-weather odds: 7% · changed – in 24h
–
10%
Yes 10%
No 90%
Leave SAN more than 15 minutes late?
Calm-weather odds: 8% · changed – in 24h
–
11%
Yes 11%
No 89%
Arrive at MDW more than an hour late?
Calm-weather odds: 2% · changed – in 24h
–
2%
Yes 2%
No 98%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to MDW?
On time or early
89%
15–30 min late
6%
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
↑
Later flights pick up delays from earlier in the day
↑
Other factors
↓
Tuesdays in October are usually quieter than average
↓
WN's recent on-time record
Weather at each end
SAN (origin)
Gusts 17 kt Ceiling 1,400 ft Visibility 3 mi Precip none
MDW (destination)
Gusts 19 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.