OnTimeStats

Historical on-time performance

Tucson to Seattle

1,216 miData through Dec 2025Source: US DOT · BTS

Flights on TUS–SEA arrive on time 86% of the time over the last 12 months.

On-time rate86%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights

based on 1,000 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Too close to call — no single carrier is clearly more on-time here.

  • SkyWest Airlines
    On-time89%
    Medianon time
    p9015 min
    Cancel0.0%
    Flights350
  • Delta Air Lines
    On-time89%
    Medianon time
    p905 min
    Cancel2.2%
    Flights92
  • Alaska Airlines
    On-time83%
    Medianon time
    p9025 min
    Cancel0.5%
    Flights558

Why flights run late

Delay causes

  • Airline40%
  • Weather5%
  • Air traffic (NAS)20%
  • Late aircraft35%
  • Security0%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly TUS → SEA

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 76% to 87% on time.

  • Mornings87% on time · p90 15 min · 1,000 flights
  • Evenings85% on time · p90 15 min · 109 flights · limited
  • Middays84% on time · p90 25 min · 1,096 flights
  • Afternoons76% on time · p90 40 min · 932 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 80% to 84% on time.

  • Saturdays84% on time · p90 25 min · 425 flights
  • Sundays84% on time · p90 20 min · 462 flights
  • Wednesdays84% on time · p90 25 min · 436 flights
  • Mondays83% on time · p90 25 min · 462 flights
  • Fridays82% on time · p90 25 min · 459 flights
  • Thursdays81% on time · p90 25 min · 459 flights
  • Tuesdays80% on time · p90 30 min · 434 flights
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Keep exploring

Related pages

Delay predictorfor this route→TUS airportTucson→SEA airportSeattle→SkyWest Airlines on this routecarrier detail→SkyWest Airlinesairline profile→

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.