OnTimeStats

Historical on-time performance

Memphis to Dallas

423 miData through Dec 2025Source: US DOT · BTS

Flights on MEM–DAL arrive on time 79% of the time over the last 12 months.

On-time rate79%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights

based on 459 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time79%
    Medianon time
    p9040 min
    Cancel0.9%
    Flights459

Why flights run late

Delay causes

  • Airline15%
  • Weather1%
  • Air traffic (NAS)18%
  • Late aircraft65%
  • 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 MEM → 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 60% to 87% on time.

  • Mornings87% on time · p90 15 min · 293 flights
  • Middays85% on time · p90 25 min · 506 flights
  • Afternoons73% on time · p90 45 min · 414 flights
  • Evenings60% on time · p90 90 min · 189 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 71% to 89% on time.

  • Wednesdays89% on time · p90 10 min · 172 flights · limited
  • Tuesdays84% on time · p90 15 min · 174 flights · limited
  • Saturdays81% on time · p90 35 min · 255 flights
  • Mondays80% on time · p90 35 min · 177 flights · limited
  • Thursdays74% on time · p90 35 min · 171 flights · limited
  • Fridays74% on time · p90 40 min · 174 flights · limited
  • Sundays71% on time · p90 55 min · 284 flights
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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.