Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
ALLEGIANT · FLIGHT G4 1339
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
G4 1339 · SGF → SFB
departs 6:19 PM CT · arrives 9:41 PM ET
Forecast issued Thu 6:00 PM ET · 49h before departure
Watch this flight
Odds over time
Arrive at SFB more than 15 minutes late?
44%
chance · ±1 pts
−1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
44%
Leave 15+ late
40%
Arrive 1h+ late
17%
Cancelled
2%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
4.9d
Now
1d
12h
6h
Departs
Lands
Arrive at SFB more than 15 minutes late?
Calm-weather odds: 31% · changed −1 pt in 24h
−1 pt
44%
Yes 44%
No 56%
Leave SGF more than 15 minutes late?
Calm-weather odds: 35% · changed −3 pts in 24h
−3 pts
40%
Yes 40%
No 60%
Arrive at SFB more than an hour late?
Calm-weather odds: 11% · changed −2 pts in 24h
−2 pts
17%
Yes 17%
No 83%
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
55%
15–30 min late
17%
30 min–1 hour late
10%
1–2 hours late
11%
Over 2 hours late
6%
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 33% of the time recently
↑
Mostly benign weather forecast at SFB
↑
Arrivals into SFB at that hour are often late
↓
Cloud base down to 1,300 ft forecast at SGF that day
↓
Saturdays in October are usually quieter than average
Weather at each end
SGF (origin)
Gusts 12 kt Ceiling 1,300 ft Visibility 10+ mi Precip none
SFB (destination)
Gusts 16 kt Ceiling 8,000 ft Visibility 10+ mi Precip 0.18 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.