OnTimeStats

Historical on-time performance

Newark to Grand Rapids

605 miData through Dec 2025Source: US DOT · BTS

Flights on EWR–GRR arrive on time 79% of the time over the last 12 months.

On-time rate79%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled4.5%of scheduled flights

based on 760 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Republic Airways
    On-time79%
    Medianon time
    p9030 min
    Cancel4.5%
    Flights760

Why flights run late

Delay causes

  • Airline29%
  • Weather0%
  • Air traffic (NAS)26%
  • Late aircraft45%
  • Security0%

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 EWR → GRR

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 — 91% on time.

  • Mornings91% on time · p90 5 min · 683 flights
  • Middays83% on time · p90 25 min · 403 flights
  • Afternoons79% on time · p90 35 min · 369 flights
  • Evenings76% on time · p90 50 min · 547 flights
  • Overnights67% on time · p90 60 min · 518 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 75% to 84% on time.

  • Saturdays84% on time · p90 20 min · 335 flights
  • Wednesdays83% on time · p90 30 min · 353 flights
  • Mondays82% on time · p90 25 min · 352 flights
  • Tuesdays81% on time · p90 25 min · 351 flights
  • Thursdays79% on time · p90 40 min · 384 flights
  • Sundays75% on time · p90 35 min · 389 flights
  • Fridays75% on time · p90 40 min · 356 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.