Southwest Airlines RDU to DEN on-time performance
Southwest Airlines nonstop flights from Raleigh/Durham to Denver · Aug 2025 – Jul 2026
On-time arrivals
75%
arrived < 15 min late
Cancelled
1.0%
7 flights
Avg arrival delay
15 min
54 min when late
Rank on route
#3 of 3
route average 81% on time
Key facts
- Southwest Airlines flights on RDU to DEN arrived on time 75% of the time in Aug 2025 – Jul 2026.
- 1% were cancelled, and 7% arrived an hour or more late.
- That ranks #3 of 3 airlines on this route, which averaged 81% on time overall.
- The largest source of delay minutes was late-arriving aircraft (49%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft49%
- Air traffic control & airport congestion25%
- Airline (crew, maintenance, cleaning, fueling)22%
- Extreme weather2%
- Security2%
Other airlines on RDU to DEN
- United Airlines87% on time · 13 min avg delay
- Frontier Airlines82% on time · 14 min avg delay
Full RDU to DEN comparison →
Southwest Airlines on-time record across all routes →
709 Southwest Airlines flights tracked on this route; 7 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.