Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
ALLEGIANT · FLIGHT G4 1399
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
G4 1399 · TYS → FLL
departs 9:11 PM ET · arrives 11:13 PM ET
Forecast issued Fri 12:00 PM ET · 57h before departure
Watch this flight
Odds over time
Arrive at FLL more than 15 minutes late?
47%
chance · ±2 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
47%
Leave 15+ late
47%
Arrive 1h+ late
16%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
6.0d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at FLL more than 15 minutes late?
Calm-weather odds: 41% · changed – in 24h
–
47%
Yes 47%
No 53%
Leave TYS more than 15 minutes late?
Calm-weather odds: 42% · changed – in 24h
–
47%
Yes 47%
No 53%
Arrive at FLL more than an hour late?
Calm-weather odds: 9% · changed – in 24h
–
16%
Yes 16%
No 84%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to FLL?
On time or early
52%
15–30 min late
17%
30 min–1 hour late
14%
1–2 hours late
8%
Over 2 hours late
7%
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 41% of the time recently
↑
Cloud base down to 200 ft, visibility down to 0.3 mi, 1.3 in of rain forecast at TYS that day
↑
Arrivals into FLL at that hour are often late
↓
TYS usually runs smoothly
↓
Mostly benign weather forecast at FLL
Weather at each end
TYS (origin)
Gusts 7 kt Ceiling 200 ft Visibility 0.3 mi Precip 1.33 in
FLL (destination)
Gusts 18 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.