American Airlines SEA to PHL on-time performance
American Airlines nonstop flights from Seattle to Philadelphia · Aug 2025 – Jul 2026
On-time arrivals
84%
arrived < 15 min late
Cancelled
2.2%
14 flights
Avg arrival delay
15 min
86 min when late
Rank on route
#2 of 3
route average 82% on time
Key facts
- American Airlines flights on SEA to PHL arrived on time 84% of the time in Aug 2025 – Jul 2026.
- 2.2% were cancelled, and 6% arrived an hour or more late.
- That ranks #2 of 3 airlines on this route, which averaged 82% on time overall.
- The largest source of delay minutes was late-arriving aircraft (50%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft50%
- Airline (crew, maintenance, cleaning, fueling)29%
- Extreme weather13%
- Air traffic control & airport congestion7%
- Security0%
Other airlines on SEA to PHL
- Alaska Airlines81% on time · 10 min avg delay
- Delta Air Lines84% on time · 8 min avg delay
Full SEA to PHL comparison →
American Airlines on-time record across all routes →
648 American Airlines flights tracked on this route; 14 cancelled, 4 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.