Alaska Airlines DCA to SEA on-time performance
Alaska Airlines nonstop flights from Washington to Seattle · Aug 2025 – Jul 2026
On-time arrivals
78%
arrived < 15 min late
Cancelled
0.8%
6 flights
Avg arrival delay
12 min
49 min when late
Rank on route
#1 of 2
route average 74% on time
Key facts
- Alaska Airlines flights on DCA to SEA arrived on time 78% of the time in Aug 2025 – Jul 2026.
- 0.8% were cancelled, and 5% arrived an hour or more late.
- That ranks #1 of 2 airlines on this route, which averaged 74% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (46%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion46%
- Airline (crew, maintenance, cleaning, fueling)22%
- Late-arriving aircraft21%
- Extreme weather12%
- Security0%
Other airlines on DCA to SEA
- Delta Air Lines68% on time · 32 min avg delay
Full DCA to SEA comparison →
Alaska Airlines on-time record across all routes →
728 Alaska Airlines flights tracked on this route; 6 cancelled, 5 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.