OnTimeStats

Historical on-time performance

ANCSEA

Anchorage to Seattle

1,449 miData through Dec 2025Source: US DOT · BTS

Flights on ANC–SEA arrive on time 83% of the time over the last 12 months.

On-time rate83%arrived within 15 min
Median delayon timetypical arrival
p90 delay20 min1 in 10 flights is worsetail risk
Cancelled1.0%of scheduled flights

based on 6,866 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Delta Air Linesbest
    On-time89%
    Medianon time
    p9015 min
    Cancel0.2%
    Flights1,614
  • Alaska Airlines
    On-time83%
    Medianon time
    p9020 min
    Cancel1.2%
    Flights5,101
  • Hawaiian Airlines
    On-time30%
    Median20 min
    p90130 min
    Cancel2.0%
    Flights151

Why flights run late

Delay causes

  • Airline42%
  • Weather5%
  • Air traffic (NAS)15%
  • Late aircraft37%
  • Security1%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

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Keep exploring

Related pages

Delay predictorfor this route→ANC airportAnchorage→SEA airportSeattle→American Airlines on this routecarrier detail→American 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.