Southwest Airlines PDX to DEN on-time performance
Southwest Airlines nonstop flights from Portland to Denver · Aug 2025 – Jul 2026
On-time arrivals
74%
arrived < 15 min late
Cancelled
0.2%
3 flights
Avg arrival delay
14 min
47 min when late
Rank on route
#4 of 5
route average 83% on time
Key facts
- Southwest Airlines flights on PDX to DEN arrived on time 74% of the time in Aug 2025 – Jul 2026.
- 0.2% were cancelled, and 6% arrived an hour or more late.
- That ranks #4 of 5 airlines on this route, which averaged 83% 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%
- Air traffic control & airport congestion26%
- Airline (crew, maintenance, cleaning, fueling)25%
- Extreme weather3%
- Security1%
Other airlines on PDX to DEN
- United Airlines91% on time · 7 min avg delay
- Alaska Airlines80% on time · 12 min avg delay
- Frontier Airlines80% on time · 13 min avg delay
- SkyWest Airlines69% on time · 15 min avg delay
Full PDX to DEN comparison →
Southwest Airlines on-time record across all routes →
1,555 Southwest Airlines flights tracked on this route; 3 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.