Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
ALLEGIANT · FLIGHT G4 539
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Today
G4 539 · EWR → GRR
departs 12:55 PM ET · arrives 2:50 PM ET
Forecast issued Thu 7:00 AM ET · 6h before departure
Watch this flight
Other days
Today
Sun 10/4 24%
Odds over time
Arrive at GRR more than 15 minutes late?
28%
chance · ±0 pts
+2 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
28%
Leave 15+ late
25%
Arrive 1h+ late
14%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.8d
2d
1d
12h
Now
Departs
Lands
Arrive at GRR more than 15 minutes late?
Calm-weather odds: 18% · changed +2 pts in 24h
+2 pts
28%
Yes 28%
No 72%
Leave EWR more than 15 minutes late?
Calm-weather odds: 14% · changed +7 pts in 24h
+7 pts
25%
Yes 25%
No 75%
Arrive at GRR more than an hour late?
Calm-weather odds: 8% · changed +8 pts in 24h
+8 pts
14%
Yes 14%
No 86%
Cancelled?
Calm-weather odds: <1% · changed −1 pt in 24h
−1 pt
1%
Yes 1%
No 99%
How late will it get to GRR?
On time or early
72%
15–30 min late
12%
30 min–1 hour late
<1%
1–2 hours late
11%
Over 2 hours late
3%
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 2 mi, 0.8 in of rain forecast at GRR that day
↑
EWR is prone to delays
↑
G4's recent on-time record
↓
GRR usually runs smoothly
↓
Mostly benign weather forecast at EWR
Weather at each end
EWR (origin)
Gusts 12 kt Ceiling 5,500 ft Visibility 10+ mi Precip none
GRR (destination)
Gusts 18 kt Ceiling 600 ft Visibility 2 mi Precip 0.80 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.