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 631
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
G4 631 · IND → SFB
departs 1:18 PM ET · arrives 3:34 PM ET
Forecast issued Thu 10:00 PM ET · 9h after departure
Watch this flight
Other days
Thu 10/1
Mon 10/5 22%
Odds over time
Arrive at SFB more than 15 minutes late?
22%
chance · ±0 pts
−8 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
22%
Leave 15+ late
24%
Arrive 1h+ late
8%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at SFB more than 15 minutes late?
Calm-weather odds: 20% · changed −8 pts in 24h
−8 pts
22%
Yes 22%
No 78%
Leave IND more than 15 minutes late?
Calm-weather odds: 26% · changed −6 pts in 24h
−6 pts
24%
Yes 24%
No 76%
Arrive at SFB more than an hour late?
Calm-weather odds: 8% · changed −5 pts in 24h
−5 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 SFB?
On time or early
78%
15–30 min late
8%
30 min–1 hour late
6%
1–2 hours late
4%
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
↑
Mostly benign weather forecast at SFB
↑
G4's recent on-time record
↑
Arrivals into SFB at that hour are often late
↓
IND usually runs smoothly
↓
Mostly benign weather forecast at IND
Weather at each end
IND (origin)
Gusts 21 kt Ceiling 10,000 ft Visibility 10+ mi Precip 0.02 in
SFB (destination)
Gusts 23 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.