OnTimeStats

Historical on-time performance

Miami to Baltimore

946 miData through May 2026Source: US DOT · BTS

Flights on MIA–BWI arrive on time 72% of the time over the last 12 months.

On-time rate72%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled2.2%of scheduled flights

based on 1,961 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Envoy Air
    On-time85%
    Medianon time
    p9030 min
    Cancel0.0%
    Flights34
  • Southwest Airlinesbest
    On-time74%
    Medianon time
    p9045 min
    Cancel2.3%
    Flights1,182
  • Frontier Airlines
    On-time69%
    Medianon time
    p9075 min
    Cancel1.6%
    Flights61
  • American Airlines
    On-time66%
    Medianon time
    p9065 min
    Cancel2.3%
    Flights684

Why flights run late

Delay causes

  • Airline27%
  • Weather5%
  • Air traffic (NAS)17%
  • Late aircraft50%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline11%
  • Weather64%
  • Air traffic (NAS)25%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 44 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 MIA → BWI

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 — 90% on time.

  • Mornings90% on time · p90 10 min · 2,086 flights
  • Middays74% on time · p90 40 min · 1,128 flights
  • Afternoons68% on time · p90 60 min · 1,297 flights
  • Overnights67% on time · p90 65 min · 1,434 flights
  • Evenings62% on time · p90 75 min · 1,229 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 67% to 81% on time.

  • Wednesdays81% on time · p90 35 min · 905 flights
  • Tuesdays80% on time · p90 35 min · 935 flights
  • Fridays75% on time · p90 50 min · 1,042 flights
  • Thursdays73% on time · p90 55 min · 1,046 flights
  • Saturdays73% on time · p90 55 min · 1,137 flights
  • Mondays72% on time · p90 50 min · 1,029 flights
  • Sundays67% on time · p90 60 min · 1,080 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.