OnTimeStats

Historical on-time performance

Milwaukee to Baltimore

641 miData through Dec 2025Source: US DOT · BTS

Flights on MKE–BWI arrive on time 83% of the time over the last 12 months.

On-time rate83%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.9%of scheduled flights

based on 825 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time83%
    Medianon time
    p9025 min
    Cancel1.9%
    Flights825

Why flights run late

Delay causes

  • Airline24%
  • Weather0%
  • Air traffic (NAS)31%
  • Late aircraft45%
  • 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 MKE → BWI

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 66% to 92% on time.

  • Mornings92% on time · p90 10 min · 1,138 flights
  • Middays90% on time · p90 10 min · 497 flights
  • Afternoons78% on time · p90 30 min · 338 flights
  • Evenings66% on time · p90 65 min · 615 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 78% to 87% on time.

  • Tuesdays87% on time · p90 25 min · 374 flights
  • Wednesdays87% on time · p90 15 min · 372 flights
  • Mondays85% on time · p90 20 min · 402 flights
  • Saturdays84% on time · p90 20 min · 288 flights
  • Fridays83% on time · p90 25 min · 406 flights
  • Thursdays82% on time · p90 25 min · 385 flights
  • Sundays78% on time · p90 45 min · 367 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.