Schedule: the flights that flew on Thursday, Oct 22, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
ALLEGIANT · FLIGHT G4 578
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 29 Tomorrow
G4 578 · GRR → PIE
departs 7:15 AM ET · arrives 9:58 AM ET
Forecast issued Wed 12:00 AM ET · 31h before departure
Watch this flight
Odds over time
Arrive at PIE more than 15 minutes late?
17%
chance · ±1 pts
+4 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
17%
Leave 15+ late
9%
Arrive 1h+ late
9%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.3d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at PIE more than 15 minutes late?
Calm-weather odds: 11% · changed +4 pts in 24h
+4 pts
17%
Yes 17%
No 83%
Leave GRR more than 15 minutes late?
Calm-weather odds: 9% · changed +0 pts in 24h
+0 pts
9%
Yes 9%
No 91%
Arrive at PIE more than an hour late?
Calm-weather odds: 5% · changed +3 pts in 24h
+3 pts
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to PIE?
On time or early
82%
15–30 min late
1%
30 min–1 hour late
6%
1–2 hours late
5%
Over 2 hours late
4%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 400 ft forecast at PIE that day
↑
G4's recent on-time record
↑
Other factors
↓
Early flights usually leave on time
↓
Mostly benign weather forecast at GRR
Weather at each end
GRR (origin)
Gusts 21 kt Ceiling 2,600 ft Visibility 10+ mi Precip 0.02 in
PIE (destination)
Gusts 19 kt Ceiling 500 ft Visibility 8 mi Precip 0.08 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.