OnTimeStats

Historical on-time performance

Seattle to Tucson

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

Flights on SEA–TUS arrive on time 80% of the time over the last 12 months.

On-time rate80%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights

based on 1,001 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.

  • Delta Air Lines
    On-time87%
    Medianon time
    p9020 min
    Cancel0.0%
    Flights92
  • Alaska Airlines
    On-time77%
    Medianon time
    p9030 min
    Cancel0.4%
    Flights558
  • SkyWest Airlines
    On-time83%
    Medianon time
    p9025 min
    Cancel0.0%
    Flights351

Why flights run late

Delay causes

  • Airline39%
  • Weather4%
  • Air traffic (NAS)16%
  • Late aircraft41%
  • 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 SEA → TUS

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 72% to 87% on time.

  • Mornings87% on time · p90 20 min · 1,325 flights
  • Afternoons83% on time · p90 20 min · 139 flights · limited
  • Overnights78% on time · p90 35 min · 112 flights · limited
  • Middays75% on time · p90 35 min · 723 flights
  • Evenings72% on time · p90 35 min · 841 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 76% to 81% on time.

  • Wednesdays81% on time · p90 25 min · 438 flights
  • Thursdays81% on time · p90 30 min · 457 flights
  • Mondays81% on time · p90 30 min · 462 flights
  • Saturdays80% on time · p90 30 min · 426 flights
  • Tuesdays79% on time · p90 30 min · 435 flights
  • Fridays79% on time · p90 25 min · 460 flights
  • Sundays76% on time · p90 30 min · 462 flights
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Keep exploring

Related pages

Delay predictorfor this route→SEA airportSeattle→TUS airportTucson→Delta Air Lines on this routecarrier detail→Delta Air Linesairline 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.