OnTimeStats

Historical on-time performance

Minneapolis to Louisville

604 miData through Dec 2025Source: US DOT · BTS

Flights on MSP–SDF arrive on time 82% of the time over the last 12 months.

On-time rate82%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights

based on 581 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time82%
    Medianon time
    p9030 min
    Cancel0.7%
    Flights581

Why flights run late

Delay causes

  • Airline64%
  • Weather21%
  • Air traffic (NAS)14%
  • Late aircraft0%
  • Security0%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly MSP → SDF

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 73% to 86% on time.

  • Middays86% on time · p90 20 min · 965 flights
  • Mornings85% on time · p90 65 min · 98 flights · limited
  • Overnights83% on time · p90 30 min · 521 flights
  • Evenings82% on time · p90 25 min · 408 flights
  • Afternoons73% on time · p90 55 min · 237 flights

Best day of week

Saturdays are the most reliable day to fly this route — 92% on time.

  • Saturdays92% on time · p90 10 min · 226 flights
  • Wednesdays86% on time · p90 25 min · 332 flights
  • Tuesdays84% on time · p90 25 min · 327 flights
  • Sundays82% on time · p90 30 min · 332 flights
  • Thursdays81% on time · p90 30 min · 337 flights
  • Fridays80% on time · p90 25 min · 336 flights
  • Mondays79% on time · p90 35 min · 339 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.