Denver (DEN) to Tucson (TUS) flights
Southwest Airlines, United Airlines fly nonstop from Denver International Airport to Tucson International Airport, with about 31 flights a week in July 2026. The 639-mile flight takes about 2h 0m gate to gate.
- Distance
- 639 mi · 1,028 km
- Flight time
- 2h 0m
- Airlines
- 2
- Seats filled
- 78%
Airlines flying DEN to TUS
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 17 | Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800 | 145,766 | 1h 55m |
| United Airlines | 14 | Boeing 737-800, Airbus A319, Airbus A320-100/200 | 110,163 | 2h 0m |
| SkyWest AirlinesSeasonal or ended | n/a | Embraer E175, Bombardier CRJ700, Bombardier CRJ200 | 33,816 | 2h 9m |
| Frontier AirlinesSeasonal or ended | n/a | Airbus A320neo, Airbus A321, Airbus A320-100/200 | 10,137 | 2h 5m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
DEN to TUS flight schedule
10 flight numbers flew this route in August 2026, 5 of them almost daily. The first usually leaves at 8:50am and the last at 8:55pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| WN 480Southwest Airlines | 8:50am | 9:45am | 4 | n/a |
| WN 4359Southwest Airlines | 9:05am | 10:00am | 4 | n/a |
| WN 1708Southwest Airlines | 10:15am | 11:15am | 20 | 100% |
| UA 1188United Airlines | 11:22am | 12:27pm | 31 | 88% |
| WN 1949Southwest Airlines | 2:10pm | 3:15pm | 8 | n/a |
| UA 2049United Airlines | 4:00pm | 5:03pm | 21 | 71% |
| WN 403Southwest Airlines | 4:05pm | 5:10pm | 12 | 58% |
| WN 4214Southwest Airlines | 5:25pm | 6:25pm | 4 | n/a |
| UA 1762United Airlines | 7:25pm | 8:30pm | 31 | 66% |
| WN 4578Southwest Airlines | 8:55pm | 9:55pm | 24 | 57% |
Is DEN to TUS on time?
From September 2025 to August 2026, 77% of 2,708 flights arrived within 15 minutes of schedule and 0.4% were cancelled. Flights leaving around 8am were the most punctual (93%), those around 8pm the least (63%). Most delay time was caused by late-arriving aircraft (51%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 1,447 | 82% | 12 min | 0.3% |
| Southwest Airlines | 1,184 | 71% | 17 min | 0.4% |
| Frontier Airlines | 77 | 79% | 12 min | 1.3% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 7am to 8am | 295 | 86% | |
| 8am to 9am | 203 | 93% | |
| 9am to 10am | 94 | 82% | |
| 11am to 12pm | 374 | 87% | |
| 1pm to 2pm | 269 | 83% | |
| 2pm to 3pm | 195 | 76% | |
| 3pm to 4pm | 298 | 78% | |
| 4pm to 5pm | 68 | 74% | |
| 5pm to 6pm | 88 | 56% | |
| 6pm to 7pm | 73 | 56% | |
| 7pm to 8pm | 377 | 66% | |
| 8pm to 9pm | 193 | 63% | |
| 9pm to 10pm | 90 | 63% | |
| 10pm to 11pm | 57 | 65% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 195 | 20,519 | |
| September 2025 | 197 | 24,159 | |
| October 2025 | 258 | 31,580 | |
| November 2025 | 261 | 26,812 | |
| December 2025 | 270 | 27,031 | |
| January 2026 | 257 | 26,192 | |
| February 2026 | 249 | 27,235 | |
| March 2026 | 275 | 31,926 | |
| April 2026 | 261 | 26,157 | |
| May 2026 | 233 | 22,685 | |
| June 2026 | 149 | 18,365 | |
| July 2026 | 139 | 17,221 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.