OnTimeStats

Historical on-time performance

Seattle to Oakland

671 miData through May 2026Source: US DOT · BTS

Flights on SEA–OAK arrive on time 72% of the time over the last 12 months.

On-time rate72%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights

based on 1,891 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.

  • Alaska Airlines
    On-time72%
    Medianon time
    p9035 min
    Cancel1.6%
    Flights679
  • Southwest Airlines
    On-time72%
    Medianon time
    p9045 min
    Cancel0.1%
    Flights1,151
  • SkyWest Airlines
    On-time70%
    Medianon time
    p9040 min
    Cancel0.0%
    Flights61

Why flights run late

Delay causes

  • Airline32%
  • Weather0%
  • Air traffic (NAS)8%
  • Late aircraft59%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline83%
  • Weather8%
  • Air traffic (NAS)8%
  • Security0%

Most cancellations here are attributed to Airline. Shares are among 12 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 SEA → OAK

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 — 92% on time.

  • Mornings92% on time · p90 10 min · 1,500 flights
  • Middays74% on time · p90 35 min · 1,883 flights
  • Afternoons71% on time · p90 40 min · 512 flights
  • Overnights64% on time · p90 55 min · 1,472 flights
  • Evenings64% on time · p90 55 min · 1,087 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 69% to 81% on time.

  • Tuesdays81% on time · p90 25 min · 917 flights
  • Wednesdays79% on time · p90 30 min · 922 flights
  • Saturdays79% on time · p90 35 min · 746 flights
  • Mondays72% on time · p90 45 min · 988 flights
  • Thursdays71% on time · p90 40 min · 979 flights
  • Fridays71% on time · p90 45 min · 986 flights
  • Sundays69% on time · p90 45 min · 916 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.