OnTimeStats

Historical on-time performance

Denver to Charlotte

1,337 miData through May 2026Source: US DOT · BTS

Flights on DEN–CLT arrive on time 80% of the time over the last 12 months.

On-time rate80%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights

based on 2,483 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • American Airlinesbest
    On-time83%
    Medianon time
    p9030 min
    Cancel1.4%
    Flights1,717
  • United Airlines
    On-time75%
    Medianon time
    p9045 min
    Cancel0.6%
    Flights675
  • Southwest Airlines
    On-time59%
    Medianon time
    p9050 min
    Cancel3.3%
    Flights91

Why flights run late

Delay causes

  • Airline31%
  • Weather4%
  • Air traffic (NAS)15%
  • Late aircraft50%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline10%
  • Weather90%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 31 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 DEN → CLT

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

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 67% to 82% on time.

  • Mornings82% on time · p90 25 min · 3,177 flights
  • Overnights81% on time · p90 40 min · 1,054 flights
  • Middays80% on time · p90 30 min · 2,098 flights
  • Afternoons68% on time · p90 60 min · 1,225 flights
  • Evenings67% on time · p90 70 min · 1,317 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 73% to 81% on time.

  • Wednesdays81% on time · p90 30 min · 1,190 flights
  • Tuesdays80% on time · p90 40 min · 1,174 flights
  • Fridays79% on time · p90 40 min · 1,325 flights
  • Mondays78% on time · p90 35 min · 1,301 flights
  • Thursdays77% on time · p90 40 min · 1,331 flights
  • Sundays75% on time · p90 50 min · 1,385 flights
  • Saturdays73% on time · p90 55 min · 1,171 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.