Delta Air Lines SEA to DFW on-time performance
Delta Air Lines nonstop flights from Seattle to Dallas/Fort Worth · Aug 2025 – Jul 2026
On-time arrivals
76%
arrived < 15 min late
Cancelled
1.7%
12 flights
Avg arrival delay
21 min
82 min when late
Rank on route
#3 of 4
route average 78% on time
Key facts
- Delta Air Lines flights on SEA to DFW arrived on time 76% of the time in Aug 2025 – Jul 2026.
- 1.7% were cancelled, and 9% arrived an hour or more late.
- That ranks #3 of 4 airlines on this route, which averaged 78% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (61%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)61%
- Late-arriving aircraft27%
- Air traffic control & airport congestion11%
- Extreme weather1%
- Security0%
Other airlines on SEA to DFW
- American Airlines78% on time · 22 min avg delay
- Alaska Airlines81% on time · 10 min avg delay
- Frontier Airlines50% on time · 16 min avg delay
Full SEA to DFW comparison →
Delta Air Lines on-time record across all routes →
715 Delta Air Lines flights tracked on this route; 12 cancelled, 5 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.