OnTimeStats

Historical on-time performance

Seattle to Minneapolis

1,399 miData through Dec 2025Source: US DOT · BTS

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

On-time rate84%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights

based on 2,710 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-time88%
    Medianon time
    p9015 min
    Cancel0.3%
    Flights1,730
  • Alaska Airlines
    On-time78%
    Medianon time
    p9030 min
    Cancel0.7%
    Flights980

Why flights run late

Delay causes

  • Airline47%
  • Weather1%
  • Air traffic (NAS)22%
  • Late aircraft29%
  • Security0%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly SEA → MSP

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 77% to 90% on time.

  • Overnights90% on time · p90 10 min · 230 flights
  • Mornings89% on time · p90 15 min · 3,128 flights
  • Afternoons88% on time · p90 15 min · 520 flights
  • Early mornings88% on time · p90 15 min · 546 flights
  • Middays80% on time · p90 25 min · 2,178 flights
  • Evenings77% on time · p90 30 min · 1,478 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 82% to 87% on time.

  • Tuesdays87% on time · p90 20 min · 1,120 flights
  • Wednesdays86% on time · p90 20 min · 1,103 flights
  • Saturdays86% on time · p90 20 min · 1,046 flights
  • Mondays85% on time · p90 20 min · 1,220 flights
  • Sundays83% on time · p90 20 min · 1,186 flights
  • Fridays83% on time · p90 20 min · 1,214 flights
  • Thursdays82% on time · p90 25 min · 1,191 flights
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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.