OnTimeStats

Historical on-time performance

Valparaiso to Washington

789 miData through May 2026Source: US DOT · BTS

Flights on VPS–DCA arrive on time 78% of the time over the last 12 months.

On-time rate78%arrived within 15 min
p90 delay65 min1 in 10 flights is worse (tail risk)
Cancelled4.2%of scheduled flights

based on 189 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.

  • PSA Airlines
    On-time79%
    Medianon time
    p9065 min
    Cancel5.5%
    Flights128
  • American Airlines
    On-time77%
    Medianon time
    p9050 min
    Cancel1.6%
    Flights61

Why flights run late

Delay causes

  • Airline66%
  • Weather3%
  • Air traffic (NAS)6%
  • Late aircraft23%
  • Security2%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline25%
  • Weather63%
  • Air traffic (NAS)13%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 8 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 VPS → DCA

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 — 82% on time.

  • Mornings82% on time · p90 25 min · 155 flights · limited
  • Middays72% on time · p90 55 min · 1,016 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 66% to 78% on time.

  • Sundays78% on time · p90 35 min · 166 flights · limited
  • Mondays76% on time · p90 40 min · 166 flights · limited
  • Saturdays76% on time · p90 65 min · 210 flights
  • Wednesdays73% on time · p90 70 min · 165 flights · limited
  • Tuesdays72% on time · p90 70 min · 165 flights · limited
  • Thursdays71% on time · p90 65 min · 167 flights · limited
  • Fridays66% on time · p90 65 min · 167 flights · limited

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.