G4581Allegiant Air · BOS → GRR
live · 27m ago
Route confirmed Allegiant Air

G4581 BostonBOS · 10:39 Grand RapidsGRR · 12:52

G4581 by Allegiant Air flies from Boston (BOS) to Grand Rapids (GRR) for the Sun, Nov 15 departure.

Right nowAwaiting arrival in Grand Rapids · off blocks 10:28 · 11 min early
12:23

estimated arrival at GRR · local time · past this estimate · waiting on the board

En routeG4581 · position estimated
BOSBostonGRRGrand Rapids
Estimated from the boardsarr 12:23

Board estimate · gate and arrival times. Off blocks 10:28 · typical taxi-out at BOS ≈ 9 min.

Typical gate push−5 minmedian posted departure
Typical arrival−12 minmedian over 4 operations
Wins back in air~7 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 4 operations · gate push → arrival
0+30+60+90 min
11-15
−11 gate · −29 arrival
11-12
−17 arrival
11-08
−5 gate · −8 arrival
11-05
+36 gate · +27 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The route today

live boards
BOSBostonOn-time likelyBOS delay board →
GRRGrand RapidsModerate riskGRR delay board →
BOS→GRRevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
40%Chance of 15+ min delay
2.6%Chance of cancellation
+11 minTypical airport delay in this weather

Driven mainly by GRR (Grand Rapids), currently flying MVFR (marginal visual). These figures come from both airports' records under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

Tomorrow at Boston

Forecast

Mon 16 Nov, local date

High10°Clikely 9°C to 11°C
Low3°Clikely 2°C to 4°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at Grand Rapids

Forecast

Mon 16 Nov, local date

High10°Clikely 9°C to 12°C
Low−2°Clikely −4°C to 0°C
  • 59% chance of fog

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

How G4581 actually runs

Pro Flight Search has tracked every published board update for G4581 across the BOS and GRR boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 3 completed legs so far: landed -2 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how G4581 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
11-15BOS 10:39 10:28 (−11)GRR 12:52 12:23 (−29)
11-12BOS 11:24GRR 13:37 13:20 (−17)
11-08BOS 10:39 10:34 (−5)GRR 12:52 12:44 (−8)
11-05BOS 11:24 12:00 (+36)GRR 13:37 14:04 (+27)

Aircraft

Recent tails: N294NV, N230NV.

Board clocks recorded as BOS and GRR published them.

Planning around G4581? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: G4581 Boston to Grand Rapids on-time performance, measured from the BOS and GRR airport boards.

Canonical URL
https://proflightsearch.com/flight/G4581
How we measure this →