Allegiant AirG4
Flights G41450 06:00 Th Su
live
Direct flights from Valparaiso (VPS) to Louisville (SDF): 2 nonstop departures observed each week across 1 airline. The median arrival is 14 minutes early. No cancellations were recorded across the 2 tracked flights. The nonstop covers 858 km, an estimated 1 hour 36 minutes in the air. Measured by Pro Flight Search from live flight boards at Valparaiso and Louisville. Updated 13 September 2026 at 19:03 UTC.
VPS
Valparaiso
tracking
SDF
Louisville
smooth · +0
858 km · ~1h 36m est.
Running clean · 1 airline · 2x weekly · nonstop
100 / 100
route health from live VPS and SDF delay boards
Median arrival delay is −14 min. 0 of 2 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival−14 minacross the last 2 operated legs
Flight time~1h 36mestimated 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 Valparaiso to Louisville route actually runs
Pro Flight Search records official board updates for nonstop VPS to SDF 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 — Valparaiso (VPS) to Louisville (SDF) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/VPS-SDF
VPS to SDF questions
Is VPS–SDF running on time right now?
Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from VPS to SDF?
Great-circle distance is 858 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 91–104 min gate-to-gate on this route.
How often does VPS–SDF 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 VPS and arrival-side delay at SDF, 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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