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 383
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5 Tomorrow
G4 383 · IAD → JAX
departs 6:46 PM ET · arrives 8:50 PM ET
Forecast issued Sun 4:00 AM ET · 39h before departure
Watch this flight
Odds over time
Arrive at JAX more than 15 minutes late?
30%
chance · ±4 pts
−3 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
30%
Leave 15+ late
32%
Arrive 1h+ late
14%
Cancelled
1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
6.8d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at JAX more than 15 minutes late?
Calm-weather odds: 23% · changed −3 pts in 24h
−3 pts
30%
Yes 30%
No 70%
Leave IAD more than 15 minutes late?
Calm-weather odds: 28% · changed +2 pts in 24h
+2 pts
32%
Yes 32%
No 68%
Arrive at JAX more than an hour late?
Calm-weather odds: 10% · changed +0 pts in 24h
+0 pts
14%
Yes 14%
No 86%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
1%
Yes 1%
No 99%
How late will it get to JAX?
On time or early
70%
15–30 min late
8%
30 min–1 hour late
8%
1–2 hours late
8%
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
↑
Cloud base down to 500 ft, 1.0 in of rain forecast at JAX that day
↑
G4's recent on-time record
↑
This flight has been late 25% of the time recently
↓
Mondays in October are usually quieter than average
↓
Cloud base down to 200 ft forecast at IAD that day
Weather at each end
IAD (origin)
Gusts 20 kt Ceiling 200 ft Visibility 6 mi Precip none
JAX (destination)
Gusts 8 kt Ceiling 500 ft Visibility 3 mi Precip 0.97 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.