Southwest Airlines GRR to DEN on-time performance
Southwest Airlines nonstop flights from Grand Rapids to Denver · Aug 2025 – Jul 2026
On-time arrivals
75%
arrived < 15 min late
Cancelled
0.3%
1 flights
Avg arrival delay
16 min
60 min when late
Rank on route
#4 of 4
route average 78% on time
Key facts
- Southwest Airlines flights on GRR to DEN arrived on time 75% of the time in Aug 2025 – Jul 2026.
- 0.3% were cancelled, and 7% arrived an hour or more late.
- That ranks #4 of 4 airlines on this route, which averaged 78% on time overall.
- The largest source of delay minutes was late-arriving aircraft (39%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft39%
- Air traffic control & airport congestion36%
- Airline (crew, maintenance, cleaning, fueling)24%
- Extreme weather1%
- Security0%
Other airlines on GRR to DEN
- United Airlines78% on time · 19 min avg delay
- Frontier Airlines80% on time · 19 min avg delay
- SkyWest Airlines100% on time · 0 min avg delay
Full GRR to DEN comparison →
Southwest Airlines on-time record across all routes →
359 Southwest Airlines flights tracked on this route; 1 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.