OnTimeStats

Historical on-time performance

New Orleans to Seattle

2,086 miData through Dec 2025Source: US DOT · BTS

Flights on MSY–SEA arrive on time 70% of the time over the last 12 months.

On-time rate70%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.4%of scheduled flights

based on 658 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Alaska Airlines
    On-time70%
    Medianon time
    p9040 min
    Cancel1.4%
    Flights658

Why flights run late

Delay causes

  • Airline33%
  • Weather2%
  • Air traffic (NAS)19%
  • Late aircraft46%
  • Security1%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly MSY → SEA

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 74% to 76% on time.

  • Afternoons76% on time · p90 35 min · 207 flights
  • Mornings76% on time · p90 30 min · 965 flights
  • Evenings74% on time · p90 40 min · 831 flights

Best day of week

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

  • Saturdays81% on time · p90 25 min · 274 flights
  • Tuesdays79% on time · p90 25 min · 268 flights
  • Thursdays77% on time · p90 35 min · 290 flights
  • Wednesdays77% on time · p90 35 min · 271 flights
  • Sundays74% on time · p90 40 min · 299 flights
  • Fridays71% on time · p90 35 min · 304 flights
  • Mondays69% on time · p90 45 min · 304 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.