Schedule: the flights that flew on Thursday, Oct 8, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1551
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 15
WN 1551 · DEN → BOI
departs 1:11 PM MT · arrives 3:08 PM MT
Forecast issued Mon 8:00 PM ET · 67h before departure
Watch this flight
Other days
Today 22%
Thu 10/15
Fri 10/16 21%
Sat 10/17 19%
Sun 10/18 29%
Odds over time
Arrive at BOI more than 15 minutes late?
60%
chance · ±9 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
60%
Leave 15+ late
52%
Arrive 1h+ late
13%
Cancelled
2%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
6.6d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at BOI more than 15 minutes late?
Calm-weather odds: 19% · changed – in 24h
–
60%
Yes 60%
No 40%
Leave DEN more than 15 minutes late?
Calm-weather odds: 24% · changed – in 24h
–
52%
Yes 52%
No 48%
Arrive at BOI more than an hour late?
Calm-weather odds: 3% · changed – in 24h
–
13%
Yes 13%
No 87%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
2%
Yes 2%
No 98%
How late will it get to BOI?
On time or early
39%
15–30 min late
32%
30 min–1 hour late
14%
1–2 hours late
7%
Over 2 hours late
5%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Gusts to 34 kt, cloud base down to 700 ft, visibility down to 0.5 mi, 0.4 in of rain forecast at DEN that day
↑
This flight has been late 49% of the time recently
↑
WN's recent on-time record
↓
Mostly benign weather forecast at BOI
↓
BOI usually runs smoothly
Weather at each end
DEN (origin)
Gusts 34 kt Ceiling 700 ft Visibility 0.5 mi Precip 0.39 in
BOI (destination)
Gusts 12 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.