OnTimeStats

Airport on-time performance

TYS

Knoxville

Data through Dec 2025Source: US DOT · BTS
On-time rate74%flights departing here that arrived on time
Median delayon timetypical departure delay
p90 delay55 min1 in 10 departures is worsetail risk
Cancelled2.0%of scheduled departures
Left the gate on time78%departures that pushed back within 15 min of schedule (DepDel15)

based on 13,241 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

As a connection hub

Arriving here (inbound performance)

These figures reflect inbound flights arriving at this airport — relevant for connections and layovers.

70%arrived on time here
(within 15 min, inbound flights)
  • On time70%
  • 15–59 min late16%
  • 1–2 hr late6%
  • 2 hr+ late5%
  • Cancelled or diverted2%

Arrival outcomes for inbound flights. Last segment = cancelled or diverted.

Bad day: 1 in 10 flights arrives more than 65 min late.

By airline

Carriers departing here (last 12 months)

Delay = arrival delay (ArrDel15-based)

  • Delta Air Linesbest
    On-time84%
    Medianon time
    p9030 min
    Cancel1.7%
    Flights1,632
  • Envoy Air
    On-time79%
    Medianon time
    p9035 min
    Cancel0.0%
    Flights382
  • United Airlines
    On-time79%
    Medianon time
    p9055 min
    Cancel1.5%
    Flights462
  • SkyWest Airlines
    On-time77%
    Medianon time
    p9050 min
    Cancel1.4%
    Flights1,137
  • Republic Airways
    On-time75%
    Medianon time
    p9060 min
    Cancel3.4%
    Flights820
  • American Airlines
    On-time71%
    Medianon time
    p9075 min
    Cancel2.9%
    Flights1,596
  • Allegiant Air
    On-time68%
    Medianon time
    p9075 min
    Cancel0.2%
    Flights1,637
  • PSA Airlines
    On-time68%
    Medianon time
    p9085 min
    Cancel4.0%
    Flights2,905

Over time

Departure on-time trend

By season

On-time rate by month

Where flights go

Busiest routes

TYS → ATL→TYS → ORD→TYS → DFW→TYS → IAH→TYS → CLT→TYS → DTW→TYS → CVG→TYS → IAD→TYS → LGA→TYS → DEN→
Advertisement

Will you make a connection at TYS? →

Methodology

A flight is on time when it arrives within 15 minutes of schedule — the US DOT / BTS standard. Median and p90(the “1-in-10 bad day”) are read from the full arrival-delay distribution, never averaged across periods.

Figures cover a carrier’s own BTS-coded flights. Cells below ~200 flights are flagged as limited data. All numbers are pre-computed from public BTS On-Time Performance data.