Alaska Airlines SEA to ORD on-time performance
Alaska Airlines nonstop flights from Seattle to Chicago · Aug 2025 – Jul 2026
On-time arrivals
73%
arrived < 15 min late
Cancelled
1.3%
23 flights
Avg arrival delay
17 min
57 min when late
Rank on route
#4 of 4
route average 76% on time
Key facts
- Alaska Airlines flights on SEA to ORD arrived on time 73% of the time in Aug 2025 – Jul 2026.
- 1.3% were cancelled, and 7% arrived an hour or more late.
- That ranks #4 of 4 airlines on this route, which averaged 76% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (43%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion43%
- Airline (crew, maintenance, cleaning, fueling)34%
- Late-arriving aircraft18%
- Extreme weather4%
- Security0%
Other airlines on SEA to ORD
- United Airlines80% on time · 19 min avg delay
- American Airlines73% on time · 28 min avg delay
- Delta Air Lines77% on time · 18 min avg delay
Full SEA to ORD comparison →
Alaska Airlines on-time record across all routes →
1,791 Alaska Airlines flights tracked on this route; 23 cancelled, 14 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.