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 1587
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
G4 1587 · HOU → PVU
departs 12:18 PM CT · arrives 2:19 PM MT
Forecast issued Thu 10:00 PM ET · 9h after departure
Watch this flight
Odds over time
Arrive at PVU more than 15 minutes late?
63%
chance · ±0 pts
+41 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
63%
Leave 15+ late
59%
Arrive 1h+ late
33%
Cancelled
38%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
25%
50%
75%
100%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at PVU more than 15 minutes late?
Calm-weather odds: 63% · changed +41 pts in 24h
+41 pts
63%
Yes 63%
No 37%
Leave HOU more than 15 minutes late?
Calm-weather odds: 59% · changed +38 pts in 24h
+38 pts
59%
Yes 59%
No 41%
Arrive at PVU more than an hour late?
Calm-weather odds: 33% · changed +23 pts in 24h
+23 pts
33%
Yes 33%
No 67%
Cancelled?
Calm-weather odds: 38% · changed +37 pts in 24h
+37 pts
38%
Yes 38%
No 62%
How late will it get to PVU?
On time or early
23%
15–30 min late
4%
30 min–1 hour late
14%
1–2 hours late
6%
Over 2 hours late
14%
Cancelled
38%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Mostly benign weather forecast at HOU
↑
G4's recent on-time record
↑
This flight has been late 26% of the time recently
↓
Mostly benign weather forecast at PVU
↓
PVU usually runs smoothly
Weather at each end
HOU (origin)
Gusts 27 kt Ceiling 2,500 ft Visibility 1.75 mi Precip 0.73 in
PVU (destination)
Gusts 6 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.