Delta Air Lines SEA to PHX on-time performance
Delta Air Lines nonstop flights from Seattle to Phoenix · Aug 2025 – Jul 2026
On-time arrivals
82%
arrived < 15 min late
Cancelled
1.0%
17 flights
Avg arrival delay
14 min
69 min when late
Rank on route
#3 of 7
route average 79% on time
Key facts
- Delta Air Lines flights on SEA to PHX arrived on time 82% of the time in Aug 2025 – Jul 2026.
- 1% were cancelled, and 6% arrived an hour or more late.
- That ranks #3 of 7 airlines on this route, which averaged 79% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (58%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)58%
- Late-arriving aircraft20%
- Air traffic control & airport congestion19%
- Extreme weather3%
- Security0%
Other airlines on SEA to PHX
- Alaska Airlines79% on time · 10 min avg delay
- Southwest Airlines67% on time · 18 min avg delay
- Envoy Air86% on time · 12 min avg delay
- SkyWest Airlines80% on time · 17 min avg delay
- American Airlines86% on time · 12 min avg delay
- Frontier Airlines71% on time · 42 min avg delay
Full SEA to PHX comparison →
Delta Air Lines on-time record across all routes →
1,766 Delta Air Lines flights tracked on this route; 17 cancelled, 7 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.