OnTimeStats

Historical on-time performance

Nashville to Milwaukee

475 miData through May 2026Source: US DOT · BTS

Flights on BNA–MKE arrive on time 74% of the time over the last 12 months.

On-time rate74%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights

based on 967 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time74%
    Medianon time
    p9040 min
    Cancel1.0%
    Flights967

Why flights run late

Delay causes

  • Airline23%
  • Weather0%
  • Air traffic (NAS)6%
  • Late aircraft71%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline30%
  • Weather70%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 10 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 BNA → MKE

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

Best time of day

Mornings are the most reliable time of day to fly this route — 93% on time.

  • Mornings93% on time · p90 10 min · 411 flights
  • Middays88% on time · p90 15 min · 718 flights
  • Evenings74% on time · p90 40 min · 286 flights
  • Afternoons69% on time · p90 50 min · 348 flights
  • Overnights68% on time · p90 60 min · 807 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 76% to 82% on time.

  • Saturdays82% on time · p90 35 min · 310 flights
  • Wednesdays81% on time · p90 30 min · 350 flights
  • Tuesdays80% on time · p90 35 min · 352 flights
  • Thursdays78% on time · p90 35 min · 378 flights
  • Sundays77% on time · p90 40 min · 400 flights
  • Fridays76% on time · p90 45 min · 391 flights
  • Mondays76% on time · p90 30 min · 389 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.