Route Reliability
Denver → Raleigh–Durham
DEN–RDU · 1,436 miles · Denver International Airport to Raleigh–Durham International Airport
- 75%
- Arrive within 15 minutes
- 9 min
- Average arrival delay
- 0.7%
- Cancelled
- 1,793
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.Frontier Airlines84%279 flights
- 2.United Airlines81%805 flights
- 3.Southwest Airlines65%709 flights
What the data says
Morning-you made the right choice.
DEN–RDU flights departing between 6–9 AM arrived on time 95% of the time, versus 50% between 6–9 PM.
Skip Monday if you can.
DEN–RDU flights arrived on time 79% of the time on Saturdays. On Mondays: 71%.
Frontier Airlines has a clear lead on this route.
Frontier Airlines arrived on time 84% of the time on this route; Southwest Airlines managed 65%.
Slipping a little lately.
DEN–RDU flights arrived on time 79% of the time over the last three months in the data, compared with 85% in the three months before that.
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
- Mon71%(271 flights)
- Tue79%(241 flights)
- Wed77%(229 flights)
- Thu75%(265 flights)
- Fri73%(266 flights)
- Sat79%(241 flights)
- Sun76%(266 flights)
- 6–9 AM95%(39 flights)
- 9 AM–12 PM82%(843 flights)
- 12–3 PM79%(95 flights)
- 3–6 PM74%(491 flights)
- 6–9 PM50%(234 flights)
- 9 PM–12 AM86%(77 flights)
Jun 63% → May 79% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 63% | 179 |
| July 2025 | 62% | 183 |
| August 2025 | 71% | 159 |
| September 2025 | 71% | 133 |
| October 2025 | 73% | 136 |
| November 2025 | 84% | 137 |
| December 2025 | 83% | 147 |
| January 2026 | 88% | 130 |
| February 2026 | 84% | 127 |
| March 2026 | 78% | 148 |
| April 2026 | 79% | 146 |
| May 2026 | 79% | 154 |
Keep nerding
Based on 1,793 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.