Alaska Airlines SEA to PDX on-time performance
Alaska Airlines nonstop flights from Seattle to Portland · Aug 2025 – Jul 2026
On-time arrivals
77%
arrived < 15 min late
Cancelled
1.2%
14 flights
Avg arrival delay
11 min
40 min when late
Rank on route
#2 of 3
route average 83% on time
Key facts
- Alaska Airlines flights on SEA to PDX arrived on time 77% of the time in Aug 2025 – Jul 2026.
- 1.2% were cancelled, and 4% arrived an hour or more late.
- That ranks #2 of 3 airlines on this route, which averaged 83% on time overall.
- The largest source of delay minutes was late-arriving aircraft (43%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft43%
- Airline (crew, maintenance, cleaning, fueling)35%
- Air traffic control & airport congestion18%
- Extreme weather4%
- Security0%
Other airlines on SEA to PDX
- SkyWest Airlines86% on time · 8 min avg delay
- Delta Air Lines75% on time · 18 min avg delay
Full SEA to PDX comparison →
Alaska Airlines on-time record across all routes →
1,155 Alaska Airlines flights tracked on this route; 14 cancelled, 0 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.