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.
ALLEGIANT · FLIGHT G4 551
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
G4 551 · AUS → GRR
departs 6:16 PM CT · arrives 10:02 PM ET
Forecast issued Fri 1:00 AM ET · 66h before departure
Watch this flight
Odds over time
Arrive at GRR more than 15 minutes late?
25%
chance · ±1 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
25%
Leave 15+ late
36%
Arrive 1h+ late
14%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
5.9d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at GRR more than 15 minutes late?
Calm-weather odds: 20% · changed – in 24h
–
25%
Yes 25%
No 75%
Leave AUS more than 15 minutes late?
Calm-weather odds: 25% · changed – in 24h
–
36%
Yes 36%
No 64%
Arrive at GRR more than an hour late?
Calm-weather odds: 9% · changed – in 24h
–
14%
Yes 14%
No 86%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to GRR?
On time or early
74%
15–30 min late
2%
30 min–1 hour late
9%
1–2 hours late
6%
Over 2 hours late
7%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Later flights pick up delays from earlier in the day
↑
This flight has been late 40% of the time recently
↑
6pm departures from AUS are often late
↓
GRR usually runs smoothly
↓
Sundays in October are usually quieter than average
Weather at each end
AUS (origin)
Gusts 26 kt Ceiling 2,200 ft Visibility 10+ mi Precip 0.28 in
GRR (destination)
Gusts 22 kt Ceiling 4,200 ft 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.