OnTimeStats

Historical on-time performance

Nashville to Portland

1,973 miData through Dec 2025Source: US DOT · BTS

Flights on BNA–PDX arrive on time 74% of the time over the last 12 months.

On-time rate74%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights

based on 306 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Alaska Airlines
    On-time74%
    Medianon time
    p9035 min
    Cancel1.0%
    Flights306

Why flights run late

Delay causes

  • Airline29%
  • Weather14%
  • Air traffic (NAS)22%
  • Late aircraft35%
  • Security0%

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 BNA → PDX

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 80% to 83% on time.

  • Afternoons83% on time · p90 25 min · 182 flights · limited
  • Evenings80% on time · p90 30 min · 471 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 79% to 84% on time.

  • Thursdays84% on time · p90 30 min · 92 flights · limited
  • Wednesdays83% on time · p90 25 min · 94 flights · limited
  • Saturdays83% on time · p90 35 min · 103 flights · limited
  • Sundays81% on time · p90 25 min · 94 flights · limited
  • Tuesdays80% on time · p90 25 min · 94 flights · limited
  • Fridays80% on time · p90 20 min · 93 flights · limited
  • Mondays79% on time · p90 30 min · 94 flights · limited
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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.