Alaska Airlines SEA to BWI on-time performance
Alaska Airlines nonstop flights from Seattle to Baltimore · Aug 2025 – Jul 2026
On-time arrivals
84%
arrived < 15 min late
Cancelled
0.5%
3 flights
Avg arrival delay
7 min
39 min when late
Rank on route
#1 of 2
route average 80% on time
Key facts
- Alaska Airlines flights on SEA to BWI arrived on time 84% of the time in Aug 2025 – Jul 2026.
- 0.5% were cancelled, and 2% arrived an hour or more late.
- That ranks #1 of 2 airlines on this route, which averaged 80% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (51%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)51%
- Air traffic control & airport congestion22%
- Late-arriving aircraft21%
- Extreme weather6%
- Security0%
Other airlines on SEA to BWI
- Southwest Airlines61% on time · 16 min avg delay
Full SEA to BWI comparison →
Alaska Airlines on-time record across all routes →
599 Alaska Airlines flights tracked on this route; 3 cancelled, 3 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.