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 638
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
G4 638 · BZN → AZA
departs 3:43 PM MT · arrives 5:03 PM MT
Forecast issued Fri 6:00 AM ET · 12h before departure
Watch this flight
Other days
Today
Mon 10/5 27%
Wed 10/7 26%
Odds over time
Arrive at AZA more than 15 minutes late?
26%
chance · ±0 pts
+2 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
26%
Leave 15+ late
25%
Arrive 1h+ late
8%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
3.8d
2d
1d
Now
6h
Departs
Lands
Arrive at AZA more than 15 minutes late?
Calm-weather odds: 25% · changed +2 pts in 24h
+2 pts
26%
Yes 26%
No 74%
Leave BZN more than 15 minutes late?
Calm-weather odds: 25% · changed +1 pt in 24h
+1 pt
25%
Yes 25%
No 75%
Arrive at AZA more than an hour late?
Calm-weather odds: 14% · changed −7 pts in 24h
−7 pts
8%
Yes 8%
No 92%
Cancelled?
Calm-weather odds: <1% · changed +1 pt in 24h
+1 pt
1%
Yes 1%
No 99%
How late will it get to AZA?
On time or early
73%
15–30 min late
7%
30 min–1 hour late
11%
1–2 hours late
2%
Over 2 hours late
6%
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
↑
AZA is prone to delays
↑
Later flights pick up delays from earlier in the day
↓
Mostly benign weather forecast at BZN
↓
Gusts to 26 kt forecast at AZA that day
Weather at each end
BZN (origin)
Gusts 11 kt Ceiling none (clear) Visibility 10+ mi Precip none
AZA (destination)
Gusts 26 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.