SEA to ALW flight delays
Seattle, WA (SEA) Walla Walla (ALW) · 213 miles
181 flights · July 2024 – July 2026 · US Bureau of Transportation Statistics
68.89%
Arrived on time
Within 15 minutes of schedule
0.55%
Cancelled
Share of scheduled flights
42 min
When late, late by
Average across delayed arrivals
14 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The two directions do not behave alike. ALW to SEA arrives on time 11.8 points more often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
This route does worse than its own airport. SEA as a whole runs 10.6 points more punctual than these flights, which points at something specific to the route — the time of day it is scheduled, or the aircraft that feed it — rather than the airport.
Only SkyWest Airlines flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
Flights from Seattle to Walla Walla run late more often than the average route, though not severely.
Which airline should you fly on this route?
Over July 2024 – July 2026, SkyWest Airlines arrived on time most often on SEA to ALW. Flights ran closest to schedule in July and worst in September.
Every airline on SEA to ALW
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines | 181 | 68.89% | 0.55% | 42 min | D |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
ALW to SEA Walla Walla back to Seattle 80.66% on time BOther routes from Seattle
Common questions
Are flights from Seattle to Walla Walla usually delayed?
68.89% of flights on the SEA to ALW route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is worse than the average route in this record.
Which airlines fly from Seattle to Walla Walla?
Only SkyWest Airlines appears in the published record on this route, with 181 flights and 68.89% arriving on time.
How often are SEA to ALW flights cancelled?
0.55% of scheduled flights did not operate — about 6 in every thousand. That is in the normal range.
When SEA to ALW flights are late, how late are they?
About 42 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on SEA to ALW during July 2024 – July 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →