OnTimeStats

Historical on-time performance

San Diego to Kansas City

1,333 miData through Dec 2025Source: US DOT · BTS

Flights on SAN–MCI arrive on time 77% of the time over the last 12 months.

On-time rate77%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights

based on 378 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time77%
    Medianon time
    p9050 min
    Cancel1.1%
    Flights378

Why flights run late

Delay causes

  • Airline26%
  • Weather0%
  • Air traffic (NAS)7%
  • Late aircraft67%
  • 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 SAN → MCI

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

Best time of day

Mornings are the most reliable time of day to fly this route — 87% on time.

  • Mornings87% on time · p90 15 min · 473 flights
  • Middays75% on time · p90 40 min · 387 flights
  • Afternoons71% on time · p90 60 min · 281 flights
  • Evenings64% on time · p90 65 min · 310 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 68% to 81% on time.

  • Saturdays81% on time · p90 35 min · 215 flights
  • Sundays80% on time · p90 25 min · 237 flights
  • Wednesdays77% on time · p90 40 min · 200 flights
  • Tuesdays77% on time · p90 45 min · 200 flights
  • Mondays74% on time · p90 40 min · 200 flights
  • Thursdays74% on time · p90 60 min · 199 flights · limited
  • Fridays68% on time · p90 50 min · 200 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.