Schedule: the flights that flew on Saturday, Oct 24, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1555
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 31 Tomorrow
WN 1555 · DEN → BOS
departs 5:15 PM MT · arrives 11:14 PM ET
Forecast issued Fri 2:00 PM ET · 29h before departure
Watch this flight
Other days
Today 41%
Sat 10/31
Sun 11/1 41%
Mon 11/2 32%
Tue 11/3 34%
Wed 11/4 21%
Thu 11/5 43%
Odds over time
Arrive at BOS more than 15 minutes late?
31%
chance · ±6 pts
+8 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
31%
Leave 15+ late
38%
Arrive 1h+ late
5%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.8d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at BOS more than 15 minutes late?
Calm-weather odds: 34% · changed +8 pts in 24h
+8 pts
31%
Yes 31%
No 69%
Leave DEN more than 15 minutes late?
Calm-weather odds: 35% · changed +7 pts in 24h
+7 pts
38%
Yes 38%
No 62%
Arrive at BOS more than an hour late?
Calm-weather odds: 5% · changed +1 pt in 24h
+1 pt
5%
Yes 5%
No 95%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to BOS?
On time or early
68%
15–30 min late
10%
30 min–1 hour late
17%
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
↑
5pm departures from DEN are often late
↑
WN's recent on-time record
↑
This flight has been late 35% of the time recently
↓
Mostly benign weather forecast at BOS
↓
Mostly benign weather forecast at DEN
Weather at each end
DEN (origin)
Gusts 13 kt Ceiling 9,000 ft Visibility 10+ mi Precip none
BOS (destination)
Gusts 18 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.