Salt Lake City (SLC) to Denver (DEN) flights
Southwest Airlines, Delta Air Lines, United Airlines, SkyWest Airlines, Frontier Airlines fly nonstop from Salt Lake City International Airport to Denver International Airport, with about 154 flights a week in July 2026. The 391-mile flight takes about 1h 32m gate to gate.
- Distance
- 391 mi · 629 km
- Flight time
- 1h 32m
- Airlines
- 5
- Seats filled
- 79%
Airlines flying SLC to DEN
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 47 | Boeing 737 MAX 8, Boeing 737-700 / MAX 7, Boeing 737-800 | 293,563 | 1h 25m |
| Delta Air Lines | 34 | Airbus A220-100, Airbus A319, Boeing 737-800 | 172,150 | 1h 29m |
| United Airlines | 29 | Boeing 737-800, Airbus A320-100/200, Boeing 737-900ER | 177,166 | 1h 33m |
| SkyWest Airlines | 23 | Embraer E175, Bombardier CRJ700, Bombardier CRJ200 | 83,869 | 1h 41m |
| Frontier Airlines | 21 | Airbus A320neo, Airbus A321, Airbus A320-100/200 | 171,809 | 1h 36m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SLC to DEN flight schedule
31 flight numbers flew this route in August 2026, 18 of them almost daily. The first usually leaves at 5:05am and the last at 9:55pm. 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) |
|---|---|---|---|---|
| UA 5683United Airlines · operated by SkyWest Airlines | 5:05am | 6:41am | 31 | 94% |
| F9 3220Frontier Airlines | 6:05am | 7:43am | 31 | 87% |
| WN 2410Southwest Airlines | 6:20am | 7:45am | 20 | 85% |
| WN 3658Southwest Airlines | 6:45am | 8:15am | 15 | 80% |
| UA 1232United Airlines | 7:00am | 8:37am | 30 | 95% |
| DL 1317Delta Air Lines | 7:47am | 9:14am | 31 | 93% |
| F9 3862Frontier Airlines | 8:16am | 10:01am | 31 | 80% |
| UA 5642United Airlines · operated by SkyWest Airlines | 8:23am | 10:28am | 31 | 83% |
| WN 4673Southwest Airlines | 8:40am | 10:15am | 28 | 64% |
| DL 1553Delta Air Lines | 10:33am | 12:04pm | 31 | 79% |
| UA 2004United Airlines | 10:39am | 12:24pm | 8 | 93% |
| UA 2090United Airlines | 10:40am | 12:28pm | 21 | 91% |
| WN 725Southwest Airlines | 12:05pm | 1:35pm | 12 | 75% |
| WN 4399Southwest Airlines | 12:15pm | 1:45pm | 8 | n/a |
| WN 1152Southwest Airlines | 12:50pm | 2:15pm | 4 | n/a |
| WN 2002Southwest Airlines | 1:00pm | 2:25pm | 4 | n/a |
| UA 4720United Airlines · operated by SkyWest Airlines | 1:08pm | 2:55pm | 30 | 91% |
| DL 1623Delta Air Lines | 1:29pm | 3:02pm | 30 | 85% |
| UA 1662United Airlines | 2:45pm | 4:26pm | 31 | 78% |
| WN 3660Southwest Airlines | 3:45pm | 5:15pm | 12 | 0% |
| WN 375Southwest Airlines | 5:00pm | 6:25pm | 8 | n/a |
| WN 210Southwest Airlines | 5:50pm | 7:20pm | 4 | n/a |
| UA 1910United Airlines | 5:57pm | 7:40pm | 10 | 67% |
| UA 1943United Airlines | 6:03pm | 7:44pm | 21 | 38% |
| DL 1586Delta Air Lines | 6:30pm | 8:01pm | 31 | 68% |
| WN 3662Southwest Airlines | 6:45pm | 8:10pm | 28 | 35% |
| F9 3982Frontier Airlines | 7:08pm | 8:49pm | 31 | 75% |
| UA 520United Airlines | 7:15pm | 8:56pm | 15 | 57% |
| DL 1667Delta Air Lines | 9:20pm | 10:55pm | 26 | 80% |
| WN 4454Southwest Airlines | 9:35pm | 11:05pm | 12 | 73% |
| WN 2182Southwest Airlines | 9:55pm | 11:25pm | 5 | n/a |
Is SLC to DEN on time?
From September 2025 to August 2026, 79% of 7,709 flights arrived within 15 minutes of schedule and 0.5% were cancelled. Flights leaving around 5am were the most punctual (95%), those around 4pm the least (62%). Most delay time was caused by air traffic control and airport congestion (35%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 2,696 | 84% | 12 min | 0.5% |
| Southwest Airlines | 2,283 | 72% | 15 min | 0.6% |
| Delta Air Lines | 1,697 | 80% | 14 min | 0.2% |
| Frontier Airlines | 1,033 | 79% | 17 min | 0.9% |
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 |
|---|---|---|---|
| 5am to 6am | 434 | 95% | |
| 6am to 7am | 286 | 93% | |
| 7am to 8am | 1,035 | 89% | |
| 8am to 9am | 617 | 74% | |
| 9am to 10am | 169 | 87% | |
| 10am to 11am | 867 | 79% | |
| 11am to 12pm | 212 | 83% | |
| 12pm to 1pm | 265 | 84% | |
| 1pm to 2pm | 778 | 84% | |
| 2pm to 3pm | 519 | 73% | |
| 3pm to 4pm | 189 | 58% | |
| 4pm to 5pm | 517 | 62% | |
| 5pm to 6pm | 456 | 71% | |
| 6pm to 7pm | 557 | 72% | |
| 8pm to 9pm | 231 | 72% | |
| 9pm to 10pm | 347 | 79% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 688 | 82,984 | |
| September 2025 | 656 | 79,721 | |
| October 2025 | 670 | 83,579 | |
| November 2025 | 577 | 65,324 | |
| December 2025 | 627 | 71,923 | |
| January 2026 | 641 | 71,864 | |
| February 2026 | 618 | 68,948 | |
| March 2026 | 673 | 73,936 | |
| April 2026 | 648 | 67,150 | |
| May 2026 | 666 | 74,687 | |
| June 2026 | 674 | 79,455 | |
| July 2026 | 683 | 81,009 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.