OnTimeStats

Historical on-time performance

Greensboro to Washington

248 miData through Dec 2025Source: US DOT · BTS

Flights on GSO–DCA arrive on time 69% of the time over the last 12 months.

On-time rate69%arrived within 15 min
p90 delay75 min1 in 10 flights is worse (tail risk)
Cancelled4.9%of scheduled flights

based on 657 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Too close to call — no single carrier is clearly more on-time here.

  • PSA Airlines
    On-time69%
    Medianon time
    p9080 min
    Cancel4.1%
    Flights612
  • Envoy Air
    On-time69%
    Medianon time
    p9030 min
    Cancel15.6%
    Flights45

Why flights run late

Delay causes

  • Airline45%
  • Weather6%
  • Air traffic (NAS)15%
  • Late aircraft34%
  • Security0%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly GSO → DCA

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 62% to 84% on time.

  • Middays84% on time · p90 20 min · 730 flights
  • Mornings84% on time · p90 25 min · 1,019 flights
  • Afternoons72% on time · p90 55 min · 308 flights
  • Evenings62% on time · p90 95 min · 454 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 76% to 84% on time.

  • Saturdays84% on time · p90 20 min · 266 flights
  • Sundays80% on time · p90 35 min · 326 flights
  • Thursdays78% on time · p90 45 min · 375 flights
  • Wednesdays78% on time · p90 50 min · 387 flights
  • Fridays78% on time · p90 40 min · 378 flights
  • Mondays77% on time · p90 40 min · 390 flights
  • Tuesdays76% on time · p90 45 min · 389 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.