OnTimeStats

Historical on-time performance

Buffalo to Washington

296 miData through May 2026Source: US DOT · BTS

Flights on BUF–DCA arrive on time 61% of the time over the last 12 months.

On-time rate61%arrived within 15 min
p90 delay105 min1 in 10 flights is worse (tail risk)
Cancelled5.6%of scheduled flights

based on 936 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.

  • Republic Airways
    On-time70%
    Medianon time
    p9040 min
    Cancel1.2%
    Flights169
  • PSA Airlines
    On-time60%
    Medianon time
    p90115 min
    Cancel6.0%
    Flights704
  • Envoy Air
    On-time51%
    Median10 min
    p90150 min
    Cancel12.7%
    Flights63

Why flights run late

Delay causes

  • Airline25%
  • Weather4%
  • Air traffic (NAS)20%
  • Late aircraft50%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline2%
  • Weather81%
  • Air traffic (NAS)17%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 52 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 BUF → 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 — 84% on time.

  • Mornings84% on time · p90 25 min · 1,093 flights
  • Middays71% on time · p90 65 min · 1,217 flights
  • Evenings58% on time · p90 100 min · 960 flights
  • Afternoons57% on time · p90 115 min · 236 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 68% to 74% on time.

  • Tuesdays74% on time · p90 70 min · 520 flights
  • Saturdays73% on time · p90 65 min · 390 flights
  • Thursdays71% on time · p90 70 min · 513 flights
  • Sundays71% on time · p90 70 min · 525 flights
  • Wednesdays69% on time · p90 55 min · 517 flights
  • Fridays69% on time · p90 70 min · 520 flights
  • Mondays68% on time · p90 70 min · 521 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.