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 977
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
WN 977 · BWI → LAS
departs 7:45 PM ET · arrives 9:55 PM PT
Forecast issued Fri 6:00 AM ET · 62h before departure
Watch this flight
Other days
Today 30%
Sat 10/3 18%
Sun 10/4
Mon 10/5 14%
Odds over time
Arrive at LAS more than 15 minutes late?
33%
chance · ±6 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
33%
Leave 15+ late
55%
Arrive 1h+ late
12%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
5.9d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at LAS more than 15 minutes late?
Calm-weather odds: 26% · changed – in 24h
–
33%
Yes 33%
No 67%
Leave BWI more than 15 minutes late?
Calm-weather odds: 33% · changed – in 24h
–
55%
Yes 55%
No 45%
Arrive at LAS more than an hour late?
Calm-weather odds: 5% · changed – in 24h
–
12%
Yes 12%
No 88%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to LAS?
On time or early
66%
15–30 min late
11%
30 min–1 hour late
10%
1–2 hours late
9%
Over 2 hours late
3%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 200 ft, visibility down to 1 mi, 0.4 in of rain forecast at BWI that day
↑
Later flights pick up delays from earlier in the day
↑
WN's recent on-time record
↓
Mostly benign weather forecast at LAS
↓
BWI is quiet at that time
Weather at each end
BWI (origin)
Gusts 11 kt Ceiling 200 ft Visibility 1 mi Precip 0.35 in
LAS (destination)
Gusts 13 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.