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 3366
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Yesterday
WN 3366 · MDW → OAK
departs 10:00 AM CT · arrives 12:30 PM PT
Forecast issued Wed 10:00 PM ET · 11h after departure
Watch this flight
Other days
Wed 9/30
Today 55%
Fri 10/2 19%
Sun 10/4 15%
Mon 10/5 16%
Tue 10/6 13%
Wed 10/7 16%
Odds over time
Arrive at OAK more than 15 minutes late?
50%
chance · ±0 pts
+4 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
50%
Leave 15+ late
32%
Arrive 1h+ late
13%
Cancelled
3%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at OAK more than 15 minutes late?
Calm-weather odds: 50% · changed +4 pts in 24h
+4 pts
50%
Yes 50%
No 50%
Leave MDW more than 15 minutes late?
Calm-weather odds: 32% · changed +4 pts in 24h
+4 pts
32%
Yes 32%
No 68%
Arrive at OAK more than an hour late?
Calm-weather odds: 13% · changed +1 pt in 24h
+1 pt
13%
Yes 13%
No 87%
Cancelled?
Calm-weather odds: 3% · changed +2 pts in 24h
+2 pts
3%
Yes 3%
No 97%
How late will it get to OAK?
On time or early
49%
15–30 min late
24%
30 min–1 hour late
12%
1–2 hours late
10%
Over 2 hours late
2%
Cancelled
3%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 800 ft, visibility down to 2.5 mi, 0.8 in of rain forecast at MDW that day
↑
This flight has been late 29% of the time recently
↑
10am departures from MDW are often late
↓
Wednesdays in September are usually quieter than average
↓
Mostly benign weather forecast at OAK
Weather at each end
MDW (origin)
Gusts 21 kt Ceiling 700 ft Visibility 2.5 mi Precip 0.94 in
OAK (destination)
Gusts 10 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.