OnTimeStats

Historical on-time performance

Roanoke VA to Atlanta

357 miData through May 2026Source: US DOT · BTS

Flights on ROA–ATL arrive on time 88% of the time over the last 12 months.

On-time rate88%arrived within 15 min
p90 delay10 min1 in 10 flights is worse (tail risk)
Cancelled2.4%of scheduled flights

based on 368 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.

  • Delta Air Lines
    On-time88%
    Medianon time
    p9010 min
    Cancel2.7%
    Flights337
  • SkyWest Airlines
    On-time84%
    Medianon time
    p9015 min
    Cancel0.0%
    Flights31

Why flights run late

Delay causes

  • Airline91%
  • Weather0%
  • Air traffic (NAS)9%
  • Late aircraft0%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline67%
  • Weather33%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Airline. Shares are among 9 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 ROA → ATL

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 78% to 87% on time.

  • Mornings87% on time · p90 15 min · 1,119 flights
  • Middays86% on time · p90 20 min · 582 flights
  • Afternoons79% on time · p90 55 min · 129 flights · limited
  • Evenings78% on time · p90 60 min · 446 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 82% to 89% on time.

  • Wednesdays89% on time · p90 10 min · 328 flights
  • Thursdays85% on time · p90 25 min · 331 flights
  • Mondays85% on time · p90 20 min · 330 flights
  • Fridays85% on time · p90 35 min · 330 flights
  • Tuesdays84% on time · p90 25 min · 328 flights
  • Saturdays84% on time · p90 25 min · 337 flights
  • Sundays82% on time · p90 20 min · 327 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.