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 1337
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Today
G4 1337 · LEX → SFB
departs 8:45 AM ET · arrives 10:42 AM ET
Forecast issued Sun 10:00 AM ET · 1h after departure
Watch this flight
Odds over time
Arrive at SFB more than 15 minutes late?
19%
chance · ±1 pts
+0 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
19%
Leave 15+ late
13%
Arrive 1h+ late
8%
Cancelled
1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
5.4d
2d
1d
12h
6h
Departs
Lands
Arrive at SFB more than 15 minutes late?
Calm-weather odds: 17% · changed +0 pts in 24h
+0 pts
19%
Yes 19%
No 81%
Leave LEX more than 15 minutes late?
Calm-weather odds: 14% · changed +0 pts in 24h
+0 pts
13%
Yes 13%
No 87%
Arrive at SFB more than an hour late?
Calm-weather odds: 6% · changed +1 pt in 24h
+1 pt
8%
Yes 8%
No 92%
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
80%
15–30 min late
7%
30 min–1 hour late
4%
1–2 hours late
4%
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
↑
This flight has been late 23% of the time recently
↑
G4's recent on-time record
↑
Thunderstorms forecast at SFB that day
↓
Mostly benign weather forecast at LEX
↓
Early flights usually leave on time
Weather at each end
LEX (origin)
Gusts 7 kt Ceiling none (clear) Visibility 10+ mi Precip none
SFB (destination)
Gusts 10 kt Ceiling 9,000 ft Visibility 7 mi Precip 0.29 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.