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 1277
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Yesterday
G4 1277 · SFB → SBN
departs 6:20 AM ET · arrives 8:46 AM ET
Forecast issued Thu 10:00 PM ET · 16h after departure
Watch this flight
Odds over time
Arrive at SBN more than 15 minutes late?
11%
chance · ±0 pts
+4 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
11%
Leave 15+ late
7%
Arrive 1h+ late
3%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at SBN more than 15 minutes late?
Calm-weather odds: 11% · changed +4 pts in 24h
+4 pts
11%
Yes 11%
No 89%
Leave SFB more than 15 minutes late?
Calm-weather odds: 7% · changed +0 pts in 24h
+0 pts
7%
Yes 7%
No 93%
Arrive at SBN more than an hour late?
Calm-weather odds: 3% · changed +1 pt in 24h
+1 pt
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 SBN?
On time or early
88%
15–30 min late
5%
30 min–1 hour late
3%
1–2 hours late
2%
Over 2 hours late
2%
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
↑
Cloud base down to 600 ft, 0.4 in of rain forecast at SBN that day
↑
Other factors
↓
Early flights usually leave on time
↓
6am departures from SFB are usually not late
Weather at each end
SFB (origin)
Gusts 23 kt Ceiling none (clear) Visibility 10+ mi Precip none
SBN (destination)
Gusts 22 kt Ceiling 600 ft Visibility 4.2 mi Precip 0.18 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.