Schedule: a typical summer Thursday (the flights of Jul 30, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
ALLEGIANT · FLIGHT G4 1591
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Yesterday
G4 1591 · BOI → SNA
departs 3:07 PM MT · arrives 4:21 PM PT
Forecast issued Thu 10:00 PM ET · 5h after departure
Watch this flight
Other days
Thu 10/1
Sat 10/3 33%
Sun 10/4 37%
Odds over time
Arrive at SNA more than 15 minutes late?
33%
chance · ±0 pts
−2 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
33%
Leave 15+ late
28%
Arrive 1h+ late
9%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at SNA more than 15 minutes late?
Calm-weather odds: 33% · changed −2 pts in 24h
−2 pts
33%
Yes 33%
No 67%
Leave BOI more than 15 minutes late?
Calm-weather odds: 28% · changed +1 pt in 24h
+1 pt
28%
Yes 28%
No 72%
Arrive at SNA more than an hour late?
Calm-weather odds: 9% · changed −2 pts in 24h
−2 pts
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SNA?
On time or early
66%
15–30 min late
18%
30 min–1 hour late
6%
1–2 hours late
6%
Over 2 hours late
3%
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
↑
This flight has been late 33% of the time recently
↑
SNA is prone to delays
↓
Mostly benign weather forecast at BOI
↓
Cloud base down to 700 ft forecast at SNA that day
Weather at each end
BOI (origin)
Gusts 7 kt Ceiling none (clear) Visibility 10+ mi Precip none
SNA (destination)
Gusts 9 kt Ceiling 700 ft Visibility 7 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.