Southwest Airlines DAL to DEN on-time performance
Southwest Airlines nonstop flights from Dallas to Denver · Aug 2025 – Jul 2026
On-time arrivals
70%
arrived < 15 min late
Cancelled
1.4%
41 flights
Avg arrival delay
18 min
57 min when late
Rank on route
#1 of 1
route average 70% on time
Key facts
- Southwest Airlines flights on DAL to DEN arrived on time 70% of the time in Aug 2025 – Jul 2026.
- 1.4% were cancelled, and 10% arrived an hour or more late.
- That ranks #1 of 1 airlines on this route, which averaged 70% on time overall.
- The largest source of delay minutes was late-arriving aircraft (45%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft45%
- Airline (crew, maintenance, cleaning, fueling)27%
- Air traffic control & airport congestion23%
- Extreme weather5%
- Security0%
Other airlines on DAL to DEN
2,985 Southwest Airlines flights tracked on this route; 41 cancelled, 8 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.