Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
ALLEGIANT · FLIGHT G4 20
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
G4 20 · LAS → SCK
departs 12:40 PM PT · arrives 2:03 PM PT
Forecast issued Wed 10:00 PM ET · 6h after departure
Watch this flight
Other days
Wed 9/30
Today 11%
Fri 10/2 30%
Sat 10/3 10%
Sun 10/4 8%
Mon 10/5 27%
Wed 10/7 14%
Odds over time
Arrive at SCK more than 15 minutes late?
24%
chance · ±0 pts
+1 pt · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
24%
Leave 15+ late
16%
Arrive 1h+ late
6%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at SCK more than 15 minutes late?
Calm-weather odds: 24% · changed +1 pt in 24h
+1 pt
24%
Yes 24%
No 76%
Leave LAS more than 15 minutes late?
Calm-weather odds: 16% · changed +0 pts in 24h
+0 pts
16%
Yes 16%
No 84%
Arrive at SCK more than an hour late?
Calm-weather odds: 6% · changed −1 pt in 24h
−1 pt
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 SCK?
On time or early
75%
15–30 min late
14%
30 min–1 hour late
4%
1–2 hours late
4%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
12pm departures from LAS are often late
↑
LAS is prone to delays
↑
LAS is busy at that time
↓
Wednesdays in September are usually quieter than average
↓
Mostly benign weather forecast at LAS
Weather at each end
LAS (origin)
Gusts 18 kt Ceiling none (clear) Visibility 10+ mi Precip none
SCK (destination)
Gusts 10 kt Ceiling none (clear) 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.