Alaska Airlines BWI to SEA on-time performance
Alaska Airlines nonstop flights from Baltimore to Seattle · Aug 2025 – Jul 2026
On-time arrivals
71%
arrived < 15 min late
Cancelled
1.0%
6 flights
Avg arrival delay
15 min
47 min when late
Rank on route
#2 of 2
route average 71% on time
Key facts
- Alaska Airlines flights on BWI to SEA arrived on time 71% of the time in Aug 2025 – Jul 2026.
- 1% were cancelled, and 6% arrived an hour or more late.
- That ranks #2 of 2 airlines on this route, which averaged 71% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (39%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion39%
- Late-arriving aircraft29%
- Extreme weather15%
- Airline (crew, maintenance, cleaning, fueling)14%
- Security3%
Other airlines on BWI to SEA
- Southwest Airlines72% on time · 21 min avg delay
Full BWI to SEA comparison →
Alaska Airlines on-time record across all routes →
599 Alaska Airlines flights tracked on this route; 6 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.