Delta Air Lines SEA to JFK on-time performance
Delta Air Lines nonstop flights from Seattle to New York · Aug 2025 – Jul 2026
On-time arrivals
80%
arrived < 15 min late
Cancelled
3.1%
41 flights
Avg arrival delay
15 min
69 min when late
Rank on route
#1 of 3
route average 77% on time
Key facts
- Delta Air Lines flights on SEA to JFK arrived on time 80% of the time in Aug 2025 – Jul 2026.
- 3.1% were cancelled, and 6% arrived an hour or more late.
- That ranks #1 of 3 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (48%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)48%
- Air traffic control & airport congestion29%
- Late-arriving aircraft20%
- Extreme weather3%
- Security0%
Other airlines on SEA to JFK
- Alaska Airlines75% on time · 14 min avg delay
- JetBlue74% on time · 37 min avg delay
Full SEA to JFK comparison →
Delta Air Lines on-time record across all routes →
1,337 Delta Air Lines flights tracked on this route; 41 cancelled, 16 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.