Schedule: the flights that flew on Thursday, Oct 22, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
ALLEGIANT · FLIGHT G4 1220
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 29 Tomorrow
G4 1220 · GSP → SFB
departs 2:43 PM ET · arrives 4:19 PM ET
Forecast issued Wed 2:00 AM ET · 37h before departure
Watch this flight
Odds over time
Arrive at SFB more than 15 minutes late?
30%
chance · ±6 pts
+4 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
30%
Leave 15+ late
44%
Arrive 1h+ late
14%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
6.6d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SFB more than 15 minutes late?
Calm-weather odds: 18% · changed +4 pts in 24h
+4 pts
30%
Yes 30%
No 70%
Leave GSP more than 15 minutes late?
Calm-weather odds: 35% · changed +2 pts in 24h
+2 pts
44%
Yes 44%
No 56%
Arrive at SFB more than an hour late?
Calm-weather odds: 9% · changed +4 pts in 24h
+4 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 SFB?
On time or early
70%
15–30 min late
3%
30 min–1 hour late
12%
1–2 hours late
10%
Over 2 hours late
4%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Gusts to 26 kt forecast at SFB that day
↑
Arrivals into SFB at that hour are often late
↑
This flight has been late 34% of the time recently
↓
Mostly benign weather forecast at GSP
↓
GSP usually runs smoothly
Weather at each end
GSP (origin)
Gusts 11 kt Ceiling none (clear) Visibility 10+ mi Precip none
SFB (destination)
Gusts 26 kt Ceiling 1,800 ft Visibility 10+ mi Precip 0.14 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.