OnTimeStats

Historical on-time performance

Santa Ana to Seattle

978 miData through May 2026Source: US DOT · BTS

Flights on SNA–SEA arrive on time 84% of the time over the last 12 months.

On-time rate84%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.3%of scheduled flights

based on 3,867 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Alaska Airlinesbest
    On-time85%
    Medianon time
    p9020 min
    Cancel1.4%
    Flights2,625
  • SkyWest Airlines
    On-time80%
    Medianon time
    p9020 min
    Cancel0.0%
    Flights272
  • Delta Air Lines
    On-time80%
    Medianon time
    p9040 min
    Cancel1.3%
    Flights970

Why flights run late

Delay causes

  • Airline35%
  • Weather1%
  • Air traffic (NAS)19%
  • Late aircraft45%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline71%
  • Weather25%
  • Air traffic (NAS)4%
  • Security0%

Most cancellations here are attributed to Airline. Shares are among 51 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 SNA → SEA

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

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 79% to 89% on time.

  • Overnights89% on time · p90 10 min · 663 flights
  • Mornings89% on time · p90 15 min · 3,583 flights
  • Middays86% on time · p90 20 min · 2,958 flights
  • Afternoons83% on time · p90 25 min · 1,980 flights
  • Evenings79% on time · p90 30 min · 2,921 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 81% to 89% on time.

  • Wednesdays89% on time · p90 15 min · 1,681 flights
  • Tuesdays88% on time · p90 15 min · 1,673 flights
  • Saturdays87% on time · p90 15 min · 1,537 flights
  • Thursdays84% on time · p90 20 min · 1,802 flights
  • Mondays84% on time · p90 20 min · 1,810 flights
  • Fridays82% on time · p90 25 min · 1,816 flights
  • Sundays81% on time · p90 25 min · 1,786 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.