OnTimeStats

Historical on-time performance

Newark to Portland

284 miData through Dec 2025Source: US DOT · BTS

Flights on EWR–PWM arrive on time 80% of the time over the last 12 months.

On-time rate80%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled2.8%of scheduled flights

based on 745 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Republic Airwaysbest
    On-time84%
    Medianon time
    p9020 min
    Cancel2.6%
    Flights588
  • United Airlines
    On-time62%
    Medianon time
    p9080 min
    Cancel3.8%
    Flights157

Why flights run late

Delay causes

  • Airline34%
  • Weather0%
  • Air traffic (NAS)18%
  • Late aircraft48%
  • 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 → PWM

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 10 min · 701 flights
  • Middays86% on time · p90 15 min · 632 flights
  • Afternoons80% on time · p90 35 min · 457 flights
  • Evenings70% on time · p90 65 min · 627 flights
  • Overnights66% on time · p90 65 min · 799 flights

Best day of week

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

  • Wednesdays84% on time · p90 30 min · 470 flights
  • Tuesdays81% on time · p90 30 min · 479 flights
  • Saturdays79% on time · p90 45 min · 385 flights
  • Thursdays77% on time · p90 45 min · 477 flights
  • Mondays76% on time · p90 55 min · 478 flights
  • Fridays76% on time · p90 55 min · 480 flights
  • Sundays75% on time · p90 45 min · 447 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.