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 1637
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2
G4 1637 · SNA → MFR
departs 6:27 PM PT · arrives 8:21 PM PT
Forecast issued Fri 10:00 PM ET · 1h after departure
Watch this flight
Other days
Fri 10/2
Mon 10/5 37%
Fri 10/9 48%
Odds over time
Arrive at MFR more than 15 minutes late?
39%
chance · ±2 pts
−9 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
39%
Leave 15+ late
33%
Arrive 1h+ late
12%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
4.0d
2d
1d
12h
6h
Departs
Lands
Arrive at MFR more than 15 minutes late?
Calm-weather odds: 39% · changed −9 pts in 24h
−9 pts
39%
Yes 39%
No 61%
Leave SNA more than 15 minutes late?
Calm-weather odds: 34% · changed −4 pts in 24h
−4 pts
33%
Yes 33%
No 67%
Arrive at MFR more than an hour late?
Calm-weather odds: 12% · changed −5 pts in 24h
−5 pts
12%
Yes 12%
No 88%
Cancelled?
Calm-weather odds: 1% · changed +0 pts in 24h
+0 pts
1%
Yes 1%
No 99%
How late will it get to MFR?
On time or early
60%
15–30 min late
11%
30 min–1 hour late
16%
1–2 hours late
8%
Over 2 hours late
4%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
This flight has been late 24% of the time recently
↑
G4's recent on-time record
↑
6pm departures from SNA are often late
↓
Mostly benign weather forecast at MFR
↓
Cloud base down to 300 ft forecast at SNA that day
Weather at each end
SNA (origin)
Gusts 10 kt Ceiling 300 ft Visibility 5 mi Precip none
MFR (destination)
Gusts 5 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.