Allegiant AirG4
Flights G43208 16:49 Th Su
live
Direct flights from Louisville (SDF) to Gulf Shores (GUF): 2 nonstop departures observed each week across 1 airline. The median arrival is 36 minutes late. No cancellations were recorded across the 2 tracked flights. The nonstop covers 894 km, an estimated 1 hour 39 minutes in the air. Measured by Pro Flight Search from live flight boards at Louisville and Gulf Shores. Updated 11 September 2026 at 02:03 UTC.
SDF
Louisville
smooth · +7
GUF
Gulf Shores
tracking
894 km · ~1h 39m est.
Running clean · 1 airline · 2x weekly · nonstop
88 / 100
route health from live SDF and GUF delay boards
Median arrival delay is +36 min. 0 of 2 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+36 minacross the last 2 operated legs
Flight time~1h 39mestimated from route distance
Weekly departures2x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Allegiant Air
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsnext sweep in 120s
How the Louisville to Gulf Shores route actually runs
Pro Flight Search records official board updates for nonstop SDF to GUF flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · 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 — Louisville (SDF) to Gulf Shores (GUF) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/SDF-GUF
SDF to GUF questions
Is SDF–GUF running on time right now?
Smooth skies ahead. The departure side at SDF is the weaker end, route health score 88/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from SDF to GUF?
Great-circle distance is 894 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 93–107 min gate-to-gate on this route.
How often does SDF–GUF fly?
Allegiant Air runs the route with about 2 flights a week (sun, thu). Since one carrier owns the route, a single disruption tends to ripple through the day.
What does the route health score measure?
A blend of departure-side delay at SDF and arrival-side delay at GUF, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
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