Schedule: a typical summer Thursday (the flights of Jul 30, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1727
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
WN 1727 · DEN → SJC
departs 6:55 PM MT · arrives 8:25 PM PT
Forecast issued Thu 10:00 PM ET · 1h after departure
Watch this flight
Other days
Thu 10/1
Today 56%
Mon 10/5 30%
Fri 10/9 37%
Odds over time
Arrive at SJC more than 15 minutes late?
36%
chance · ±1 pts
−14 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
36%
Leave 15+ late
35%
Arrive 1h+ late
6%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
2.8d
2d
1d
12h
6h
Departs
Now
Lands
Arrive at SJC more than 15 minutes late?
Calm-weather odds: 34% · changed −14 pts in 24h
−14 pts
36%
Yes 36%
No 64%
Leave DEN more than 15 minutes late?
Calm-weather odds: 35% · changed −7 pts in 24h
−7 pts
35%
Yes 35%
No 65%
Arrive at SJC more than an hour late?
Calm-weather odds: 6% · changed −5 pts in 24h
−5 pts
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SJC?
On time or early
64%
15–30 min late
18%
30 min–1 hour late
11%
1–2 hours late
5%
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
↑
6pm departures from DEN are often late
↑
Later flights pick up delays from earlier in the day
↑
This flight has been late 52% of the time recently
↓
Mostly benign weather forecast at DEN
↓
Cloud base down to 700 ft forecast at SJC that day
Weather at each end
DEN (origin)
Gusts 21 kt Ceiling 7,000 ft Visibility 10+ mi Precip none
SJC (destination)
Gusts 10 kt Ceiling 700 ft Visibility 6 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.