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 456
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
G4 456 · BOS → DSM
departs 12:06 PM ET · arrives 2:16 PM CT
Forecast issued Thu 10:00 PM ET · 10h after departure
Watch this flight
Other days
Thu 10/1
Today 18%
Odds over time
Arrive at DSM more than 15 minutes late?
31%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
31%
Leave 15+ late
21%
Arrive 1h+ late
9%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at DSM more than 15 minutes late?
Calm-weather odds: 31% · changed +0 pts in 24h
+0 pts
31%
Yes 31%
No 69%
Leave BOS more than 15 minutes late?
Calm-weather odds: 21% · changed +3 pts in 24h
+3 pts
21%
Yes 21%
No 79%
Arrive at DSM more than an hour late?
Calm-weather odds: 9% · changed −1 pt in 24h
−1 pt
9%
Yes 9%
No 91%
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
68%
15–30 min late
14%
30 min–1 hour late
8%
1–2 hours late
7%
Over 2 hours late
3%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
G4's recent on-time record
↑
Gusts to 30 kt, cloud base down to 400 ft, 0.4 in of rain forecast at DSM that day
↑
12pm departures from BOS are often late
↓
Mostly benign weather forecast at BOS
↓
DSM usually runs smoothly
Weather at each end
BOS (origin)
Gusts 19 kt Ceiling 11,000 ft Visibility 10+ mi Precip none
DSM (destination)
Gusts 30 kt Ceiling 400 ft Visibility 3 mi Precip 0.38 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.