Route Reliability
Denver → Tucson
DEN–TUS · 639 miles · Denver International Airport to Tucson International Airport
- 77%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 0.4%
- Cancelled
- 2,797
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.United Airlines82%1,484 flights
- 2.Frontier Airlines82%104 flights
- 3.Southwest Airlines71%1,209 flights
What the data says
Morning flights do better here.
DEN–TUS flights departing between 6–9 AM arrived on time 88% of the time, versus 57% between 9 PM–12 AM.
Friday is doing you no favors.
DEN–TUS flights arrived on time 83% of the time on Tuesdays. On Fridays: 72%.
United Airlines runs this route best.
United Airlines arrived on time 82% of the time on this route; Southwest Airlines managed 71%.
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
- Mon77%(411 flights)
- Tue83%(378 flights)
- Wed81%(373 flights)
- Thu75%(411 flights)
- Fri72%(416 flights)
- Sat81%(346 flights)
- Sun74%(449 flights)
- 6–9 AM88%(493 flights)
- 9 AM–12 PM84%(519 flights)
- 12–3 PM82%(550 flights)
- 3–6 PM72%(454 flights)
- 6–9 PM68%(580 flights)
- 9 PM–12 AM57%(188 flights)
Jun 61% → May 74% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 61% | 188 |
| July 2025 | 63% | 160 |
| August 2025 | 77% | 191 |
| September 2025 | 78% | 193 |
| October 2025 | 79% | 257 |
| November 2025 | 90% | 258 |
| December 2025 | 74% | 270 |
| January 2026 | 79% | 255 |
| February 2026 | 80% | 246 |
| March 2026 | 80% | 274 |
| April 2026 | 82% | 260 |
| May 2026 | 74% | 232 |
Keep nerding
Based on 2,797 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.