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 1242
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Today
G4 1242 · DSM → SFB
departs 9:23 AM CT · arrives 1:13 PM ET
Forecast issued Sun 9:00 AM ET · 1h before departure
Watch this flight
Odds over time
Arrive at SFB more than 15 minutes late?
22%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
22%
Leave 15+ late
14%
Arrive 1h+ late
6%
Cancelled
2%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
5.5d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at SFB more than 15 minutes late?
Calm-weather odds: 19% · changed +0 pts in 24h
+0 pts
22%
Yes 22%
No 78%
Leave DSM more than 15 minutes late?
Calm-weather odds: 13% · changed −1 pt in 24h
−1 pt
14%
Yes 14%
No 86%
Arrive at SFB more than an hour late?
Calm-weather odds: 5% · changed +0 pts in 24h
+0 pts
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed +1 pt in 24h
+1 pt
2%
Yes 2%
No 98%
How late will it get to SFB?
On time or early
77%
15–30 min late
7%
30 min–1 hour late
9%
1–2 hours late
1%
Over 2 hours late
5%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
This flight has been late 30% of the time recently
↑
Thunderstorms forecast at SFB that day
↑
G4's recent on-time record
↓
Mostly benign weather forecast at DSM
↓
Early flights usually leave on time
Weather at each end
DSM (origin)
Gusts 10 kt Ceiling none (clear) Visibility 10+ mi Precip none
SFB (destination)
Gusts 10 kt Ceiling 9,000 ft Visibility 7 mi Precip 0.30 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.