OnTimeStats

Historical on-time performance

Portland to Newark

2,434 miData through Dec 2025Source: US DOT · BTS

Flights on PDX–EWR arrive on time 75% of the time over the last 12 months.

On-time rate75%arrived within 15 min
p90 delay60 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights

based on 674 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • United Airlinesbest
    On-time80%
    Medianon time
    p9035 min
    Cancel0.9%
    Flights459
  • Alaska Airlines
    On-time67%
    Medianon time
    p90110 min
    Cancel1.9%
    Flights215

Why flights run late

Delay causes

  • Airline11%
  • Weather2%
  • Air traffic (NAS)68%
  • Late aircraft19%
  • Security0%

Most delay minutes here are attributed to Air traffic (NAS).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly PDX → EWR

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 75% to 80% on time.

  • Overnights80% on time · p90 40 min · 1,096 flights
  • Mornings77% on time · p90 45 min · 937 flights
  • Middays75% on time · p90 40 min · 497 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 73% to 83% on time.

  • Tuesdays83% on time · p90 25 min · 365 flights
  • Wednesdays80% on time · p90 35 min · 366 flights
  • Fridays79% on time · p90 40 min · 369 flights
  • Sundays77% on time · p90 40 min · 368 flights
  • Saturdays77% on time · p90 65 min · 330 flights
  • Mondays76% on time · p90 35 min · 366 flights
  • Thursdays73% on time · p90 55 min · 366 flights
Advertisement

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.