Schedule: a typical summer Thursday (the flights of Jul 30, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
ALLEGIANT · FLIGHT G4 1199
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
G4 1199 · GSP → SFB
departs 8:25 AM ET · arrives 9:51 AM ET
Forecast issued Thu 10:00 PM ET · 14h after departure
Watch this flight
Odds over time
Arrive at SFB more than 15 minutes late?
11%
chance · ±0 pts
−3 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
11%
Leave 15+ late
12%
Arrive 1h+ late
5%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at SFB more than 15 minutes late?
Calm-weather odds: 11% · changed −3 pts in 24h
−3 pts
11%
Yes 11%
No 89%
Leave GSP more than 15 minutes late?
Calm-weather odds: 12% · changed −1 pt in 24h
−1 pt
12%
Yes 12%
No 88%
Arrive at SFB more than an hour late?
Calm-weather odds: 5% · changed −3 pts in 24h
−3 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 SFB?
On time or early
88%
15–30 min late
<1%
30 min–1 hour late
5%
1–2 hours late
2%
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
↑
Mostly benign weather forecast at SFB
↑
This flight has been late 18% of the time recently
↓
Arrivals into SFB at that hour are usually not late
↓
Mostly benign weather forecast at GSP
Weather at each end
GSP (origin)
Gusts 7 kt Ceiling 1,400 ft Visibility 5 mi Precip none
SFB (destination)
Gusts 23 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.