OnTimeStats

Historical on-time performance

Knoxville to Dallas-Fort Worth

772 miData through May 2026Source: US DOT · BTS

Flights on TYS–DFW arrive on time 74% of the time over the last 12 months.

On-time rate74%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled3.1%of scheduled flights

based on 1,618 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Too close to call — no single carrier is clearly more on-time here.

  • Envoy Air
    On-time87%
    Medianon time
    p9020 min
    Cancel0.0%
    Flights30
  • PSA Airlines
    On-time75%
    Medianon time
    p9050 min
    Cancel1.2%
    Flights253
  • American Airlines
    On-time73%
    Medianon time
    p9055 min
    Cancel3.5%
    Flights1,335

Why flights run late

Delay causes

  • Airline42%
  • Weather9%
  • Air traffic (NAS)9%
  • Late aircraft39%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline18%
  • Weather82%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 50 cancellations with a reported cause (BTS reports causes from June 2003).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly TYS → DFW

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

Mornings are the most reliable time of day to fly this route — 83% on time.

  • Mornings83% on time · p90 25 min · 1,502 flights
  • Middays78% on time · p90 45 min · 716 flights
  • Afternoons74% on time · p90 65 min · 1,106 flights
  • Evenings60% on time · p90 75 min · 1,047 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 73% to 77% on time.

  • Thursdays77% on time · p90 45 min · 625 flights
  • Tuesdays75% on time · p90 45 min · 619 flights
  • Saturdays74% on time · p90 70 min · 635 flights
  • Wednesdays74% on time · p90 60 min · 621 flights
  • Mondays74% on time · p90 55 min · 624 flights
  • Fridays73% on time · p90 55 min · 628 flights
  • Sundays73% on time · p90 50 min · 630 flights

Keep exploring

Related pages

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.