Schedule: a typical summer Monday (the flights of Jul 27, 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
Monday, October 5 Tomorrow
G4 3490 · GRR → PHL
departs 2:57 PM ET · arrives 4:48 PM ET
Forecast issued Sun 7:00 AM ET · 32h before departure
Watch this flight
Other days
Mon 10/5
Fri 10/9 31%
Odds over time
Arrive at PHL more than 15 minutes late?
27%
chance · ±1 pts
+0 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
27%
Leave 15+ late
24%
Arrive 1h+ late
10%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
6.6d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at PHL more than 15 minutes late?
Calm-weather odds: 23% · changed +0 pts in 24h
+0 pts
27%
Yes 27%
No 73%
Leave GRR more than 15 minutes late?
Calm-weather odds: 22% · changed −3 pts in 24h
−3 pts
24%
Yes 24%
No 76%
Arrive at PHL more than an hour late?
Calm-weather odds: 7% · changed −2 pts in 24h
−2 pts
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 PHL?
On time or early
72%
15–30 min late
13%
30 min–1 hour late
4%
1–2 hours late
6%
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
↑
G4's recent on-time record
↑
This flight has been late 24% of the time recently
↑
Arrivals into PHL at that hour are often late
↓
Mondays in October are usually quieter than average
↓
Mostly benign weather forecast at GRR
Weather at each end
GRR (origin)
Gusts 15 kt Ceiling none (clear) Visibility 10+ mi Precip none
PHL (destination)
Gusts 20 kt Ceiling 700 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.