OnTimeStats

Airport on-time performance

Walla Walla

Data through May 2026Source: US DOT · BTS

No flights recorded for last 12 months at this airport.

Over time

On-time trend

By season

On-time rate by month

When it gets busy

Busiest times at ALW

Historically, departures at ALW peak 10 a.m.–2 p.m. — 49% of scheduled flights leave in that block.

  • 5–10 a.m.44%
  • 10 a.m.–2 p.m.49%
  • 2–5 p.m.6%

Share of 873 scheduled departures by planned departure time, 2023-06 .. 2026-05. Historical averages from BTS data — not live airport status.

When flights don't go

Why flights were cancelled

  • Airline22%
  • Weather74%
  • Air traffic (NAS)5%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 65 cancellations with a reported cause (BTS reports causes from June 2003).

Where flights go

Busiest routes

ALW → SEA→

Side by side

Compare this airport

Compare with Hartsfield Jackson Atlanta International Airporthead-to-head on-time→Compare with Chicago O'Hare International Airporthead-to-head on-time→Compare with Dallas Fort Worth International Airporthead-to-head on-time→Compare with Denver International Airporthead-to-head on-time→

Will you make a connection at ALW? →

Keep exploring

Related guides

When to arrive at the airportguide→Worst airports for delaysguide→

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.