Alaska Airlines RDU to SEA on-time performance
Alaska Airlines nonstop flights from Raleigh/Durham to Seattle · Aug 2025 – Jul 2026
On-time arrivals
74%
arrived < 15 min late
Cancelled
1.6%
9 flights
Avg arrival delay
14 min
48 min when late
Rank on route
#2 of 2
route average 77% on time
Key facts
- Alaska Airlines flights on RDU to SEA arrived on time 74% of the time in Aug 2025 – Jul 2026.
- 1.6% were cancelled, and 5% arrived an hour or more late.
- That ranks #2 of 2 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was late-arriving aircraft (39%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft39%
- Air traffic control & airport congestion30%
- Airline (crew, maintenance, cleaning, fueling)28%
- Security1%
- Extreme weather1%
Other airlines on RDU to SEA
- Delta Air Lines83% on time · 10 min avg delay
Full RDU to SEA comparison →
Alaska Airlines on-time record across all routes →
554 Alaska Airlines flights tracked on this route; 9 cancelled, 2 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.