OnTimeStats

Historical on-time performance

Fairbanks to Seattle

1,533 miData through May 2026Source: US DOT · BTS

Flights on FAI–SEA arrive on time 81% of the time over the last 12 months.

On-time rate81%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.3%of scheduled flights

based on 2,315 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Alaska Airlinesbest
    On-time83%
    Medianon time
    p9020 min
    Cancel0.9%
    Flights1,858
  • Delta Air Lines
    On-time77%
    Medianon time
    p9035 min
    Cancel2.6%
    Flights457

Why flights run late

Delay causes

  • Airline37%
  • Weather3%
  • Air traffic (NAS)20%
  • Late aircraft40%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline55%
  • Weather45%
  • Air traffic (NAS)0%
  • Security0%

Most cancellations here are attributed to Airline. Shares are among 29 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 FAI → 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 77% to 86% on time.

  • Middays86% on time · p90 15 min · 1,447 flights
  • Mornings84% on time · p90 20 min · 1,231 flights
  • Early mornings81% on time · p90 30 min · 2,785 flights
  • Afternoons77% on time · p90 30 min · 1,511 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 78% to 84% on time.

  • Saturdays84% on time · p90 20 min · 1,010 flights
  • Wednesdays83% on time · p90 25 min · 980 flights
  • Tuesdays83% on time · p90 20 min · 985 flights
  • Sundays83% on time · p90 25 min · 1,007 flights
  • Fridays82% on time · p90 25 min · 1,006 flights
  • Thursdays80% on time · p90 25 min · 992 flights
  • Mondays78% on time · p90 35 min · 1,000 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.