Route Reliability
Pittsburgh → Denver
PIT–DEN · 1,290 miles · Pittsburgh International Airport to Denver International Airport
- 82%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 0.7%
- Cancelled
- 1,729
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.United Airlines87%905 flights
- 2.Southwest Airlines76%766 flights
Not enough history to rank: Frontier Airlines (58 flights). We rank airlines only after 100 flights on the route.
What the data says
Morning-you made the right choice.
PIT–DEN flights departing between 3–6 AM arrived on time 94% of the time, versus 60% between 6–9 PM.
Skip Thursday if you can.
PIT–DEN flights arrived on time 86% of the time on Sundays. On Thursdays: 78%.
United Airlines runs this route best.
United Airlines arrived on time 87% of the time on this route; Southwest Airlines managed 76%.
Ticking up lately.
PIT–DEN flights arrived on time 84% of the time over the last three months in the data, compared with 80% 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
- Mon84%(274 flights)
- Tue82%(239 flights)
- Wed85%(237 flights)
- Thu78%(240 flights)
- Fri78%(271 flights)
- Sat79%(212 flights)
- Sun86%(238 flights)
- 3–6 AM94%(205 flights)
- 6–9 AM91%(418 flights)
- 9 AM–12 PM94%(249 flights)
- 12–3 PM68%(74 flights)
- 3–6 PM76%(499 flights)
- 6–9 PM60%(266 flights)
Jun 68% → May 78% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 68% | 168 |
| July 2025 | 74% | 181 |
| August 2025 | 78% | 175 |
| September 2025 | 86% | 167 |
| October 2025 | 90% | 177 |
| November 2025 | 94% | 158 |
| December 2025 | 74% | 138 |
| January 2026 | 83% | 103 |
| February 2026 | 84% | 92 |
| March 2026 | 82% | 117 |
| April 2026 | 92% | 117 |
| May 2026 | 78% | 118 |
Keep nerding
Based on 1,729 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.