Alaska Airlines SEA to JFK on-time performance
Alaska Airlines nonstop flights from Seattle to New York · Aug 2025 – Jul 2026
On-time arrivals
75%
arrived < 15 min late
Cancelled
2.6%
36 flights
Avg arrival delay
14 min
51 min when late
Rank on route
#2 of 3
route average 77% on time
Key facts
- Alaska Airlines flights on SEA to JFK arrived on time 75% of the time in Aug 2025 – Jul 2026.
- 2.6% were cancelled, and 7% arrived an hour or more late.
- That ranks #2 of 3 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (53%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion53%
- Airline (crew, maintenance, cleaning, fueling)22%
- Late-arriving aircraft19%
- Extreme weather4%
- Security2%
Other airlines on SEA to JFK
- Delta Air Lines80% on time · 15 min avg delay
- JetBlue74% on time · 37 min avg delay
Full SEA to JFK comparison →
Alaska Airlines on-time record across all routes →
1,403 Alaska Airlines flights tracked on this route; 36 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.