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 548
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Yesterday
G4 548 · AZA → GRR
departs 10:39 AM MT · arrives 5:08 PM ET
Forecast issued Wed 10:00 PM ET · 8h after departure
Watch this flight
Other days
Wed 9/30
Wed 10/7 14%
Odds over time
Arrive at GRR more than 15 minutes late?
20%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
20%
Leave 15+ late
31%
Arrive 1h+ late
6%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.7d
2d
1d
12h
6h
Departs
Lands
Arrive at GRR more than 15 minutes late?
Calm-weather odds: 20% · changed +0 pts in 24h
+0 pts
20%
Yes 20%
No 80%
Leave AZA more than 15 minutes late?
Calm-weather odds: 31% · changed +3 pts in 24h
+3 pts
31%
Yes 31%
No 69%
Arrive at GRR 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 GRR?
On time or early
79%
15–30 min late
6%
30 min–1 hour late
8%
1–2 hours late
2%
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 600 ft, visibility down to 1.25 mi, 0.4 in of rain forecast at GRR that day
↑
AZA is prone to delays
↑
G4's recent on-time record
↓
Wednesdays in September are usually quieter than average
↓
GRR usually runs smoothly
Weather at each end
AZA (origin)
Gusts 9 kt Ceiling 5,000 ft Visibility 10+ mi Precip none
GRR (destination)
Gusts 11 kt Ceiling 600 ft Visibility 1.25 mi Precip 0.35 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.