Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
ALLEGIANT · FLIGHT G4 3490
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2
G4 3490 · GRR → PHL
departs 2:57 PM ET · arrives 4:48 PM ET
Forecast issued Fri 10:00 PM ET · 7h after departure
Watch this flight
Other days
Fri 10/2
Mon 10/5 28%
Fri 10/9 31%
Odds over time
Arrive at PHL more than 15 minutes late?
44%
chance · ±0 pts
−5 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
44%
Leave 15+ late
34%
Arrive 1h+ late
19%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
3.7d
2d
1d
12h
6h
Departs
Lands
Arrive at PHL more than 15 minutes late?
Calm-weather odds: 44% · changed −5 pts in 24h
−5 pts
44%
Yes 44%
No 56%
Leave GRR more than 15 minutes late?
Calm-weather odds: 34% · changed −4 pts in 24h
−4 pts
34%
Yes 34%
No 66%
Arrive at PHL more than an hour late?
Calm-weather odds: 19% · changed +6 pts in 24h
+6 pts
19%
Yes 19%
No 81%
Cancelled?
Calm-weather odds: 1% · changed +0 pts in 24h
+0 pts
1%
Yes 1%
No 99%
How late will it get to PHL?
On time or early
55%
15–30 min late
10%
30 min–1 hour late
15%
1–2 hours late
13%
Over 2 hours late
6%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
G4's recent on-time record
↑
This flight has been late 24% of the time recently
↑
Mostly benign weather forecast at PHL
↓
Fridays in October are usually quieter than average
Weather at each end
GRR (origin)
Gusts 18 kt Ceiling 900 ft Visibility 7 mi Precip 0.24 in
PHL (destination)
Gusts 27 kt Ceiling 3,000 ft Visibility 2 mi Precip 0.36 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.