Schedule: a typical summer Monday (the flights of Jul 27, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
ALLEGIANT · FLIGHT G4 1578
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5 Tomorrow
G4 1578 · ATW → SFB
departs 4:00 PM CT · arrives 7:52 PM ET
Forecast issued Sun 12:00 PM ET · 29h before departure
Watch this flight
Odds over time
Arrive at SFB more than 15 minutes late?
33%
chance · ±7 pts
+3 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
33%
Leave 15+ late
25%
Arrive 1h+ late
11%
Cancelled
2%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
6.7d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SFB more than 15 minutes late?
Calm-weather odds: 21% · changed +3 pts in 24h
+3 pts
33%
Yes 33%
No 67%
Leave ATW more than 15 minutes late?
Calm-weather odds: 22% · changed +3 pts in 24h
+3 pts
25%
Yes 25%
No 75%
Arrive at SFB more than an hour late?
Calm-weather odds: 8% · changed +1 pt in 24h
+1 pt
11%
Yes 11%
No 89%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
How late will it get to SFB?
On time or early
66%
15–30 min late
16%
30 min–1 hour late
5%
1–2 hours late
3%
Over 2 hours late
7%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 1,300 ft, 0.4 in of rain, thunderstorms forecast at SFB that day
↑
G4's recent on-time record
↑
Later flights pick up delays from earlier in the day
↓
Mostly benign weather forecast at ATW
↓
Mondays in October are usually quieter than average
Weather at each end
ATW (origin)
Gusts 9 kt Ceiling none (clear) Visibility 10+ mi Precip none
SFB (destination)
Gusts 10 kt Ceiling 1,800 ft Visibility 9 mi Precip 0.41 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.