Schedule: a typical summer Monday (the flights of Jul 27, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
ALLEGIANT · FLIGHT G4 637
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5 Tomorrow
G4 637 · AZA → BZN
departs 11:34 AM MT · arrives 2:53 PM MT
Forecast issued Sun 4:00 PM ET · 23h before departure
Watch this flight
Other days
Mon 10/5
Fri 10/9 11%
Odds over time
Arrive at BZN more than 15 minutes late?
8%
chance · ±1 pts
+0 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
8%
Leave 15+ late
9%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
6.6d
2d
Now
12h
6h
Departs
Lands
Arrive at BZN more than 15 minutes late?
Calm-weather odds: 8% · changed +0 pts in 24h
+0 pts
8%
Yes 8%
No 92%
Leave AZA more than 15 minutes late?
Calm-weather odds: 9% · changed +0 pts in 24h
+0 pts
9%
Yes 9%
No 91%
Arrive at BZN more than an hour late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 pts
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to BZN?
On time or early
91%
15–30 min late
<1%
30 min–1 hour late
4%
1–2 hours late
2%
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
↓
BZN usually runs smoothly
↓
Mondays in October are usually quieter than average
Weather at each end
AZA (origin)
Gusts 24 kt Ceiling none (clear) Visibility 10+ mi Precip none
BZN (destination)
Gusts 10 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.