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 583
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5 Tomorrow
G4 583 · GRR → PDX
departs 1:45 PM ET · arrives 3:11 PM PT
Forecast issued Sun 10:00 AM ET · 28h before departure
Watch this flight
Other days
Mon 10/5
Fri 10/9 16%
Odds over time
Arrive at PDX more than 15 minutes late?
12%
chance · ±1 pts
+1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
12%
Leave 15+ late
13%
Arrive 1h+ late
5%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
6.6d
2d
Now
12h
6h
Departs
Lands
Arrive at PDX more than 15 minutes late?
Calm-weather odds: 11% · changed +1 pt in 24h
+1 pt
12%
Yes 12%
No 88%
Leave GRR more than 15 minutes late?
Calm-weather odds: 12% · changed +0 pts in 24h
+0 pts
13%
Yes 13%
No 87%
Arrive at PDX more than an hour late?
Calm-weather odds: 5% · changed +0 pts in 24h
+0 pts
5%
Yes 5%
No 95%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to PDX?
On time or early
88%
15–30 min late
4%
30 min–1 hour late
3%
1–2 hours late
3%
Over 2 hours late
2%
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
↑
Early flights usually leave on time
↓
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 0.02 in
PDX (destination)
Gusts 12 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.