Route Reliability
Cleveland → Denver
CLE–DEN · 1,201 miles · Cleveland Hopkins International Airport to Denver International Airport
- 81%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 0.4%
- Cancelled
- 1,835
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.United Airlines88%939 flights
- 2.Southwest Airlines79%604 flights
- 3.Frontier Airlines65%292 flights
What the data says
Morning flights do better here.
CLE–DEN flights departing between 3–6 AM arrived on time 95% of the time, versus 53% between 6–9 PM.
Saturday comes out ahead.
A small edge: 85% on time on Saturdays against 79% on Mondays.
United Airlines has a clear lead on this route.
United Airlines arrived on time 88% of the time on this route; Frontier Airlines managed 65%.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon79%(275 flights)
- Tue83%(254 flights)
- Wed82%(243 flights)
- Thu80%(277 flights)
- Fri79%(270 flights)
- Sat85%(209 flights)
- Sun82%(292 flights)
- 3–6 AM95%(112 flights)
- 6–9 AM94%(452 flights)
- 9 AM–12 PM90%(317 flights)
- 12–3 PM87%(130 flights)
- 3–6 PM76%(526 flights)
- 6–9 PM53%(280 flights)
- 9 PM–12 AM—(3 flights)
Jun 70% → May 86% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 70% | 174 |
| July 2025 | 79% | 181 |
| August 2025 | 76% | 175 |
| September 2025 | 88% | 162 |
| October 2025 | 84% | 157 |
| November 2025 | 90% | 151 |
| December 2025 | 77% | 165 |
| January 2026 | 79% | 119 |
| February 2026 | 88% | 102 |
| March 2026 | 77% | 133 |
| April 2026 | 86% | 140 |
| May 2026 | 86% | 161 |
Keep nerding
Based on 1,835 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.