Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3103
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
WN 3103 · MDW → SAN
departs 5:45 AM CT · arrives 7:50 AM PT
Forecast issued Fri 6:00 AM ET · 1h before departure
Watch this flight
Other days
Today
Sun 10/4 7%
Mon 10/5 10%
Tue 10/6 8%
Wed 10/7 9%
Odds over time
Arrive at SAN more than 15 minutes late?
11%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
11%
Leave 15+ late
4%
Arrive 1h+ late
2%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
3.4d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at SAN more than 15 minutes late?
Calm-weather odds: 11% · changed +0 pts in 24h
+0 pts
11%
Yes 11%
No 89%
Leave MDW more than 15 minutes late?
Calm-weather odds: 5% · changed −1 pt in 24h
−1 pt
4%
Yes 4%
No 96%
Arrive at SAN more than an hour late?
Calm-weather odds: 1% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SAN?
On time or early
88%
15–30 min late
7%
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
↑
SAN is prone to delays
↑
MDW is prone to delays
↑
Other factors
↓
Early flights usually leave on time
↓
5am departures from MDW are usually not late
Weather at each end
MDW (origin)
Gusts 15 kt Ceiling 1,500 ft Visibility 7 mi Precip 0.12 in
SAN (destination)
Gusts 16 kt Ceiling 400 ft Visibility 2.5 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.