Historical on-time performance
Walla Walla to Seattle
213 miData through May 2026Source: US DOT · BTS
No flights recorded for last 12 months on this route.
By airline
How each carrier compares
No airline figures for this window yet.
Why flights run late
Delay causes
Delay-cause data appears once delayed flights are recorded for this window.
When flights don't go
Why flights were cancelled
- Airline22%
- Weather73%
- Air traffic (NAS)5%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 64 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 ALW → 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 81% to 84% on time.
- Mornings84% on time · p90 10 min · 388 flights
- Middays81% on time · p90 40 min · 429 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 81% to 84% on time.
- Sundays84% on time · p90 20 min · 125 flights · limited
- Tuesdays84% on time · p90 15 min · 124 flights · limited
- Saturdays83% on time · p90 15 min · 125 flights · limited
- Thursdays83% on time · p90 15 min · 124 flights · limited
- Fridays82% on time · p90 40 min · 125 flights · limited
- Wednesdays81% on time · p90 20 min · 124 flights · limited
- Mondays81% on time · p90 25 min · 126 flights · limited
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