LAS to TYS flight delays & on-time performance
Nonstop flights from Harry Reid International Airport to McGhee Tyson Airport · 1,739 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at LAS or TYS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Las Vegas (LAS) to Knoxville (TYS) arrived on time 81% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0% were cancelled, and 7% arrived an hour or more late.
- Allegiant Air is the only airline reporting nonstop flights on this route.
- Departures scheduled around 4pm did best (86% on time); around 10am did worst (77%).
- Monday was the most reliable day to fly (82% on time) and Friday the least (77%).
- The largest source of delay minutes was air traffic control & airport congestion (50%).
Which airline is most on time from LAS to TYS?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Allegiant Air | 81% | 0.0% | 19 min | 6.8% | 118 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am83%12 flights
- 7am78%23 flights
- 10am77%30 flights
- 3pm77%13 flights
- 4pm86%21 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday82%0.0% cancelled
- Wednesday100%0.0% cancelled
- Thursday100%0.0% cancelled
- Friday77%0.0% cancelled
- Sunday83%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Air traffic control & airport congestion50%
- Late-arriving aircraft34%
- Airline (crew, maintenance, cleaning, fueling)10%
- Extreme weather6%
- Security1%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
LAS to TYS: common questions
- How often are LAS to TYS flights on time?
- 81% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Las Vegas to Knoxville cancelled?
- 0.0% of scheduled flights were cancelled (0 of 118).
- How long are typical delays?
- Across all flights the average arrival delay was 19 min (early arrivals count as zero). Flights that were late arrived 96 min behind schedule on average, and 6.8% of flights were an hour or more late.
- How long is taxi time at LAS?
- Flights on this route spent 22 min taxiing from the gate to takeoff on average.
Related routes
Return trip: TYS to LAS — 81% on time
More flights from Las Vegas
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: LAS → TYS, nonstop flights by US airlines that report to the DOT. How we calculate this.