Schedule: a typical Tuesday (the flights of Jul 28, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3705
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29 Today
WN 3705 · SJC → SEA
departs 7:20 PM PT · arrives 9:30 PM PT
Forecast issued Tue 6:00 PM ET · 4h before departure
Watch this flight
Other days
Today
Wed 9/30 28%
Thu 10/1 25%
Fri 10/2 27%
Sat 10/3 24%
Sun 10/4 30%
Mon 10/5 19%
Odds over time
Arrive at SEA more than 15 minutes late?
45%
chance · ±4 pts
+4 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
45%
Leave 15+ late
28%
Arrive 1h+ late
9%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
2.8d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at SEA more than 15 minutes late?
Calm-weather odds: 34% · changed +4 pts in 24h
+4 pts
45%
Yes 45%
No 55%
Leave SJC more than 15 minutes late?
Calm-weather odds: 30% · changed −1 pt in 24h
−1 pt
28%
Yes 28%
No 72%
Arrive at SEA more than an hour late?
Calm-weather odds: 8% · changed −2 pts in 24h
−2 pts
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SEA?
On time or early
55%
15–30 min late
18%
30 min–1 hour late
17%
1–2 hours late
7%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Arrivals into SEA at that hour are often late
↑
SEA is prone to delays
↑
Later flights pick up delays from earlier in the day
↓
Tuesdays in September are usually quieter than average
↓
Mostly benign weather forecast at SJC
Weather at each end
SJC (origin)
Gusts 7 kt Ceiling none (clear) Visibility 8 mi Precip none
SEA (destination)
Gusts 24 kt Ceiling 1,000 ft Visibility 6 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.