Southwest Airlines DEN to RDU on-time performance
Southwest Airlines nonstop flights from Denver to Raleigh/Durham · Aug 2025 – Jul 2026
On-time arrivals
65%
arrived < 15 min late
Cancelled
0.8%
6 flights
Avg arrival delay
20 min
51 min when late
Rank on route
#3 of 3
route average 76% on time
Key facts
- Southwest Airlines flights on DEN to RDU arrived on time 65% of the time in Aug 2025 – Jul 2026.
- 0.8% were cancelled, and 9% arrived an hour or more late.
- That ranks #3 of 3 airlines on this route, which averaged 76% on time overall.
- The largest source of delay minutes was late-arriving aircraft (56%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft56%
- Airline (crew, maintenance, cleaning, fueling)30%
- Air traffic control & airport congestion13%
- Extreme weather1%
- Security0%
Other airlines on DEN to RDU
- United Airlines82% on time · 13 min avg delay
- Frontier Airlines87% on time · 8 min avg delay
Full DEN to RDU comparison →
Southwest Airlines on-time record across all routes →
708 Southwest Airlines flights tracked on this route; 6 cancelled, 1 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.