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 2858
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
G4 2858 · SFB → GSP
departs 6:10 AM ET · arrives 7:35 AM ET
Forecast issued Thu 10:00 PM ET · 16h after departure
Watch this flight
Odds over time
Arrive at GSP more than 15 minutes late?
11%
chance · ±0 pts
+5 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
11%
Leave 15+ late
6%
Arrive 1h+ late
2%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at GSP more than 15 minutes late?
Calm-weather odds: 11% · changed +5 pts in 24h
+5 pts
11%
Yes 11%
No 89%
Leave SFB more than 15 minutes late?
Calm-weather odds: 6% · changed +1 pt in 24h
+1 pt
6%
Yes 6%
No 94%
Arrive at GSP more than an hour late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
Cancelled?
Calm-weather odds: <1% · changed +1 pt in 24h
+1 pt
<1%
Yes <1%
No 99%
How late will it get to GSP?
On time or early
88%
15–30 min late
8%
30 min–1 hour late
<1%
1–2 hours late
1%
Over 2 hours late
1%
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 21% of the time recently
↑
Other factors
↓
Early flights usually leave on time
↓
Mostly benign weather forecast at GSP
Weather at each end
SFB (origin)
Gusts 23 kt Ceiling none (clear) Visibility 10+ mi Precip none
GSP (destination)
Gusts 7 kt Ceiling 1,400 ft Visibility 5 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.