Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
ALLEGIANT · FLIGHT G4 3027
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
G4 3027 · TYS → BOS
departs 6:45 AM ET · arrives 9:05 AM ET
Forecast issued Wed 9:00 PM ET · 58h before departure
Watch this flight
Other days
Sat 10/3
Mon 10/5 16%
Odds over time
Arrive at BOS more than 15 minutes late?
8%
chance · ±1 pts
+1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
8%
Leave 15+ late
6%
Arrive 1h+ late
5%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
4.4d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at BOS more than 15 minutes late?
Calm-weather odds: 6% · changed +1 pt in 24h
+1 pt
8%
Yes 8%
No 92%
Leave TYS more than 15 minutes late?
Calm-weather odds: 5% · changed +1 pt in 24h
+1 pt
6%
Yes 6%
No 94%
Arrive at BOS more than an hour late?
Calm-weather odds: 2% · changed +2 pts in 24h
+2 pts
5%
Yes 5%
No 95%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to BOS?
On time or early
92%
15–30 min late
2%
30 min–1 hour late
1%
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
↓
Early flights usually leave on time
↓
Arrivals into BOS at that hour are usually not late
Weather at each end
TYS (origin)
Gusts 8 kt Ceiling 700 ft Visibility 0.7 mi Precip 0.18 in
BOS (destination)
Gusts 13 kt Ceiling 10,667 ft 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.