OnTimeStats

Historical on-time performance

Charleston to Dallas

977 miData through Dec 2025Source: US DOT · BTS

Flights on CHS–DAL arrive on time 78% of the time over the last 12 months.

On-time rate78%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights

based on 337 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time78%
    Medianon time
    p9045 min
    Cancel0.6%
    Flights337

Why flights run late

Delay causes

  • Airline17%
  • Weather1%
  • Air traffic (NAS)26%
  • Late aircraft56%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly CHS → DAL

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 70% to 90% on time.

  • Mornings90% on time · p90 10 min · 189 flights · limited
  • Middays85% on time · p90 20 min · 254 flights
  • Afternoons70% on time · p90 50 min · 314 flights
  • Evenings70% on time · p90 50 min · 250 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 75% to 79% on time.

  • Tuesdays79% on time · p90 30 min · 139 flights · limited
  • Wednesdays79% on time · p90 40 min · 139 flights · limited
  • Thursdays79% on time · p90 30 min · 138 flights · limited
  • Saturdays79% on time · p90 50 min · 156 flights · limited
  • Fridays78% on time · p90 35 min · 139 flights · limited
  • Mondays76% on time · p90 35 min · 139 flights · limited
  • Sundays75% on time · p90 25 min · 157 flights · limited
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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.