Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
ALLEGIANT · FLIGHT G4 454
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2
G4 454 · HOU → DSM
departs 4:52 PM CT · arrives 7:04 PM CT
Forecast issued Fri 10:00 PM ET · 4h after departure
Watch this flight
Other days
Fri 10/2
Today 35%
Fri 10/9 37%
Odds over time
Arrive at DSM more than 15 minutes late?
42%
chance · ±1 pts
−2 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
42%
Leave 15+ late
40%
Arrive 1h+ late
19%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
3.8d
2d
1d
12h
6h
Departs
Lands
Arrive at DSM more than 15 minutes late?
Calm-weather odds: 42% · changed −2 pts in 24h
−2 pts
42%
Yes 42%
No 58%
Leave HOU more than 15 minutes late?
Calm-weather odds: 40% · changed +1 pt in 24h
+1 pt
40%
Yes 40%
No 60%
Arrive at DSM more than an hour late?
Calm-weather odds: 19% · changed +2 pts in 24h
+2 pts
19%
Yes 19%
No 81%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to DSM?
On time or early
57%
15–30 min late
9%
30 min–1 hour late
13%
1–2 hours late
14%
Over 2 hours late
5%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Visibility down to 1.25 mi, 0.6 in of rain forecast at HOU that day
↑
G4's recent on-time record
↑
DSM is prone to delays
↓
Mostly benign weather forecast at DSM
Weather at each end
HOU (origin)
Gusts 17 kt Ceiling 1,800 ft Visibility 1.25 mi Precip 0.41 in
DSM (destination)
Gusts 9 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.