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 377
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5 Tomorrow
G4 377 · OKC → GUF
departs 5:10 PM CT · arrives 7:14 PM CT
Forecast issued Sun 7:00 AM ET · 35h before departure
Watch this flight
Other days
Mon 10/5
Fri 10/9 26%
Odds over time
Arrive at GUF more than 15 minutes late?
25%
chance · ±1 pts
−1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
25%
Leave 15+ late
26%
Arrive 1h+ late
9%
Cancelled
2%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.8d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at GUF more than 15 minutes late?
Calm-weather odds: 18% · changed −1 pt in 24h
−1 pt
25%
Yes 25%
No 75%
Leave OKC more than 15 minutes late?
Calm-weather odds: 21% · changed −1 pt in 24h
−1 pt
26%
Yes 26%
No 74%
Arrive at GUF more than an hour late?
Calm-weather odds: 7% · changed −1 pt in 24h
−1 pt
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: <1% · changed −1 pt in 24h
−1 pt
2%
Yes 2%
No 98%
How late will it get to GUF?
On time or early
74%
15–30 min late
6%
30 min–1 hour late
9%
1–2 hours late
4%
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
↑
G4's recent on-time record
↑
Cloud base down to 600 ft, 0.8 in of rain forecast at GUF that day
↑
Later flights pick up delays from earlier in the day
↓
Mondays in October are usually quieter than average
↓
Mostly benign weather forecast at OKC
Weather at each end
OKC (origin)
Gusts 9 kt Ceiling none (clear) Visibility 10+ mi Precip none
GUF (destination)
Gusts 14 kt Ceiling 700 ft Visibility 4 mi Precip 0.80 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.