Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 2109
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
WN 2109 · STL → PDX
departs 4:45 PM CT · arrives 6:50 PM PT
Forecast issued Fri 2:00 PM ET · 52h before departure
Watch this flight
Odds over time
Arrive at PDX more than 15 minutes late?
24%
chance · ±2 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
24%
Leave 15+ late
35%
Arrive 1h+ late
5%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
5.8d
Now
1d
12h
6h
Departs
Lands
Arrive at PDX more than 15 minutes late?
Calm-weather odds: 22% · changed – in 24h
–
24%
Yes 24%
No 76%
Leave STL more than 15 minutes late?
Calm-weather odds: 32% · changed – in 24h
–
35%
Yes 35%
No 65%
Arrive at PDX more than an hour late?
Calm-weather odds: 5% · changed – in 24h
–
5%
Yes 5%
No 95%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to PDX?
On time or early
75%
15–30 min late
8%
30 min–1 hour late
11%
1–2 hours late
4%
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
↑
This flight has been late 33% of the time recently
↑
Later flights pick up delays from earlier in the day
↑
4pm departures from STL are often late
↓
Cloud base down to 200 ft forecast at PDX that day
↓
Mostly benign weather forecast at STL
Weather at each end
STL (origin)
Gusts 10 kt Ceiling none (clear) Visibility 10+ mi Precip none
PDX (destination)
Gusts 6 kt Ceiling 200 ft Visibility 9 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.