Schedule: a typical summer Monday (the flights of Jul 27, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
ALLEGIANT · FLIGHT G4 1339
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5 Tomorrow
G4 1339 · TRI → SFB
departs 2:59 PM ET · arrives 4:33 PM ET
Forecast issued Sun 7:00 AM ET · 32h before departure
Watch this flight
Odds over time
Arrive at SFB more than 15 minutes late?
51%
chance · ±6 pts
+2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
51%
Leave 15+ late
45%
Arrive 1h+ late
19%
Cancelled
2%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
6.6d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SFB more than 15 minutes late?
Calm-weather odds: 35% · changed +2 pts in 24h
+2 pts
51%
Yes 51%
No 49%
Leave TRI more than 15 minutes late?
Calm-weather odds: 34% · changed +0 pts in 24h
+0 pts
45%
Yes 45%
No 55%
Arrive at SFB more than an hour late?
Calm-weather odds: 6% · changed +5 pts in 24h
+5 pts
19%
Yes 19%
No 81%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
How late will it get to SFB?
On time or early
48%
15–30 min late
8%
30 min–1 hour late
23%
1–2 hours late
12%
Over 2 hours late
7%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 600 ft, 0.4 in of rain forecast at SFB that day
↑
This flight has been late 28% of the time recently
↑
G4's recent on-time record
↓
Mondays in October are usually quieter than average
↓
SFB is quiet at that time
Weather at each end
TRI (origin)
Gusts 12 kt Ceiling 100 ft Visibility 0.3 mi Precip none
SFB (destination)
Gusts 10 kt Ceiling 1,700 ft Visibility 8 mi Precip 0.44 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.