OnTimeStats

Historical on-time performance

Portland to Phoenix

1,009 miData through May 2026Source: US DOT · BTS

Flights on PDX–PHX 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)
Cancelled0.5%of scheduled flights

based on 3,523 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Alaska Airlinesbest
    On-time82%
    Medianon time
    p9020 min
    Cancel0.4%
    Flights1,369
  • American Airlines
    On-time79%
    Medianon time
    p9045 min
    Cancel1.0%
    Flights876
  • Southwest Airlines
    On-time76%
    Medianon time
    p9035 min
    Cancel0.2%
    Flights1,278

Why flights run late

Delay causes

  • Airline45%
  • Weather0%
  • Air traffic (NAS)14%
  • Late aircraft40%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline56%
  • Weather39%
  • Air traffic (NAS)6%
  • Security0%

Most cancellations here are attributed to Airline. Shares are among 18 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 PDX → PHX

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

Best time of day

Mornings are the most reliable time of day to fly this route — 90% on time.

  • Mornings90% on time · p90 10 min · 3,955 flights
  • Middays84% on time · p90 25 min · 2,295 flights
  • Afternoons75% on time · p90 35 min · 2,154 flights
  • Evenings75% on time · p90 45 min · 1,977 flights
  • Overnights68% on time · p90 55 min · 1,050 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 79% to 84% on time.

  • Tuesdays84% on time · p90 20 min · 1,490 flights
  • Wednesdays83% on time · p90 25 min · 1,539 flights
  • Mondays83% on time · p90 25 min · 1,691 flights
  • Saturdays83% on time · p90 30 min · 1,596 flights
  • Sundays80% on time · p90 30 min · 1,714 flights
  • Thursdays80% on time · p90 30 min · 1,678 flights
  • Fridays79% on time · p90 35 min · 1,723 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.