Alaska Airlines SEA to SFO on-time performance
Alaska Airlines nonstop flights from Seattle to San Francisco · Aug 2025 – Jul 2026
On-time arrivals
58%
arrived < 15 min late
Cancelled
1.2%
32 flights
Avg arrival delay
24 min
53 min when late
Rank on route
#5 of 5
route average 62% on time
Key facts
- Alaska Airlines flights on SEA to SFO arrived on time 58% of the time in Aug 2025 – Jul 2026.
- 1.2% were cancelled, and 12% arrived an hour or more late.
- That ranks #5 of 5 airlines on this route, which averaged 62% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (58%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion58%
- Late-arriving aircraft21%
- Airline (crew, maintenance, cleaning, fueling)17%
- Extreme weather5%
- Security0%
Other airlines on SEA to SFO
- United Airlines62% on time · 27 min avg delay
- SkyWest Airlines72% on time · 16 min avg delay
- Delta Air Lines63% on time · 23 min avg delay
- Southwest Airlines100% on time · 0 min avg delay
Full SEA to SFO comparison →
Alaska Airlines on-time record across all routes →
2,710 Alaska Airlines flights tracked on this route; 32 cancelled, 1 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.