Schedule: a typical summer Saturday (the flights of Jul 25, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
ALLEGIANT · FLIGHT G4 537
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3 Yesterday
G4 537 · SNA → GRR
departs 4:06 PM PT · arrives 11:11 PM ET
Forecast issued Sat 10:00 PM ET · 3h after departure
Watch this flight
Odds over time
Arrive at GRR more than 15 minutes late?
33%
chance · ±0 pts
+3 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
33%
Leave 15+ late
28%
Arrive 1h+ late
10%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
4.9d
2d
1d
12h
6h
Departs
Now
Lands
Arrive at GRR more than 15 minutes late?
Calm-weather odds: 33% · changed +3 pts in 24h
+3 pts
33%
Yes 33%
No 67%
Leave SNA more than 15 minutes late?
Calm-weather odds: 28% · changed −3 pts in 24h
−3 pts
28%
Yes 28%
No 72%
Arrive at GRR more than an hour late?
Calm-weather odds: 9% · changed −1 pt in 24h
−1 pt
10%
Yes 10%
No 90%
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
66%
15–30 min late
13%
30 min–1 hour late
10%
1–2 hours late
7%
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
↑
This flight has been late 32% of the time recently
↑
G4's recent on-time record
↑
SNA is prone to delays
↓
GRR usually runs smoothly
↓
Mostly benign weather forecast at GRR
Weather at each end
SNA (origin)
Gusts 11 kt Ceiling none (clear) Visibility 10+ mi Precip none
GRR (destination)
Gusts 11 kt Ceiling none (clear) 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.