Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
ALLEGIANT · FLIGHT G4 1397
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Yesterday
G4 1397 · TYS → GUF
departs 10:00 AM ET · arrives 10:26 AM CT
Forecast issued Wed 10:00 PM ET · 12h after departure
Watch this flight
Other days
Wed 9/30
Today 16%
Wed 10/7 10%
Odds over time
Arrive at GUF more than 15 minutes late?
8%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
8%
Leave 15+ late
9%
Arrive 1h+ late
4%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at GUF more than 15 minutes late?
Calm-weather odds: 8% · changed +0 pts in 24h
+0 pts
8%
Yes 8%
No 92%
Leave TYS more than 15 minutes late?
Calm-weather odds: 9% · changed +1 pt in 24h
+1 pt
9%
Yes 9%
No 91%
Arrive at GUF more than an hour late?
Calm-weather odds: 4% · changed +0 pts in 24h
+0 pts
4%
Yes 4%
No 96%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to GUF?
On time or early
91%
15–30 min late
2%
30 min–1 hour late
2%
1–2 hours late
3%
Over 2 hours late
1%
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
↑
Other factors
↓
Mostly benign weather forecast at TYS
↓
Wednesdays in September are usually quieter than average
Weather at each end
TYS (origin)
Gusts 6 kt Ceiling none (clear) Visibility 10+ mi Precip none
GUF (destination)
Gusts 18 kt Ceiling 2,400 ft Visibility 9 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.