Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
ALLEGIANT · FLIGHT G4 155
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2
G4 155 · LAS → SFB
departs 11:39 PM PT · arrives 7:07 AM ET
Forecast issued Fri 10:00 PM ET · 5h before departure
Watch this flight
Other days
Fri 10/2
Fri 10/9 35%
Odds over time
Arrive at SFB more than 15 minutes late?
45%
chance · ±0 pts
+10 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
45%
Leave 15+ late
46%
Arrive 1h+ late
18%
Cancelled
7%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
4.2d
2d
1d
12h
Now
Departs
Lands
Arrive at SFB more than 15 minutes late?
Calm-weather odds: 33% · changed +10 pts in 24h
+10 pts
45%
Yes 45%
No 55%
Leave LAS more than 15 minutes late?
Calm-weather odds: 37% · changed +15 pts in 24h
+15 pts
46%
Yes 46%
No 54%
Arrive at SFB more than an hour late?
Calm-weather odds: 19% · changed +3 pts in 24h
+3 pts
18%
Yes 18%
No 82%
Cancelled?
Calm-weather odds: 1% · changed +6 pts in 24h
+6 pts
7%
Yes 7%
No 93%
How late will it get to SFB?
On time or early
52%
15–30 min late
20%
30 min–1 hour late
6%
1–2 hours late
12%
Over 2 hours late
5%
Cancelled
7%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
This flight has been late 31% of the time recently
↑
G4's recent on-time record
↑
Gusts to 25 kt, 1.0 in of rain, thunderstorms forecast at SFB that day
↓
Mostly benign weather forecast at LAS
Weather at each end
LAS (origin)
Gusts 7 kt Ceiling none (clear) Visibility 10+ mi Precip none
SFB (destination)
Gusts 25 kt Ceiling 2,300 ft Visibility 6 mi Precip 1.04 in
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.