OnTimeStats

Historical on-time performance

Baltimore to Indianapolis

515 miData through Dec 2025Source: US DOT · BTS

Flights on BWI–IND arrive on time 77% of the time over the last 12 months.

On-time rate77%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights

based on 1,214 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
    p9035 min
    Cancel1.0%
    Flights1,214

Why flights run late

Delay causes

  • Airline26%
  • Weather3%
  • Air traffic (NAS)15%
  • Late aircraft56%
  • Security1%

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 BWI → IND

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 — 90% on time.

  • Mornings90% on time · p90 10 min · 972 flights
  • Middays83% on time · p90 20 min · 481 flights
  • Afternoons72% on time · p90 40 min · 717 flights
  • Evenings64% on time · p90 60 min · 445 flights
  • Overnights62% on time · p90 60 min · 929 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 70% to 78% on time.

  • Tuesdays78% on time · p90 30 min · 502 flights
  • Thursdays77% on time · p90 35 min · 534 flights
  • Wednesdays77% on time · p90 40 min · 504 flights
  • Mondays74% on time · p90 40 min · 535 flights
  • Fridays73% on time · p90 40 min · 543 flights
  • Saturdays73% on time · p90 35 min · 379 flights
  • Sundays70% on time · p90 45 min · 547 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.