Allegiant AirG4
live
Direct flights from Houston (HOU) to Knoxville/Maryville (TYS): 2 nonstop departures observed each week across 1 airline. The nonstop covers 1,257 km, an estimated 2 hours 7 minutes in the air. Measured by Pro Flight Search from live flight boards at Houston and Knoxville/Maryville. Updated 25 October 2026 at 22:20 UTC.
HOU
Houston
busy · +27
TYS
Knoxville/Maryville
tracking
1,257 km · ~2h 07m est.
Under pressure · 1 airline · 2x weekly · nonstop
64 / 100
route health from live HOU and TYS delay boards
Flight time~2h 07mestimated 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 daysAirports right now
live boardsnext sweep in 120s
How the Houston to Knoxville/Maryville route actually runs
Pro Flight Search records official board updates for nonstop HOU to TYS 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 — Houston (HOU) to Knoxville/Maryville (TYS) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/HOU-TYS
HOU to TYS questions
Is HOU–TYS running on time right now?
Some delays possible. The departure side at HOU is the weaker end, route health score 64/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from HOU to TYS?
Great-circle distance is 1,257 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 119–138 min gate-to-gate on this route.
How often does HOU–TYS fly?
Allegiant Air runs the route with about 2 flights a week (mon, fri). 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 HOU and arrival-side delay at TYS, 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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