ALW to SEA flight delays
Walla Walla (ALW) Seattle, WA (SEA) · 213 miles
182 flights · July 2024 – July 2026 · US Bureau of Transportation Statistics
80.66%
Arrived on time
Within 15 minutes of schedule
0.55%
Cancelled
Share of scheduled flights
37 min
When late, late by
Average across delayed arrivals
8 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The two directions do not behave alike. SEA to ALW arrives on time 11.8 points less 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.
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.
The Walla Walla to Seattle route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over July 2024 – July 2026, SkyWest Airlines arrived on time most often on ALW to SEA. Flights ran closest to schedule in July and worst in September.
Every airline on ALW to SEA
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 | 182 | 80.66% | 0.55% | 37 min | B |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
SEA to ALW Seattle back to Walla Walla 68.89% on time DCommon questions
Are flights from Walla Walla to Seattle usually delayed?
80.66% of flights on the ALW to SEA route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is better than the average route in this record.
Which airlines fly from Walla Walla to Seattle?
Only SkyWest Airlines appears in the published record on this route, with 182 flights and 80.66% arriving on time.
How often are ALW to SEA flights cancelled?
0.55% of scheduled flights did not operate — about 6 in every thousand. That is in the normal range.
When ALW to SEA flights are late, how late are they?
About 37 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 ALW to SEA 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 →