Denver (DEN) to San Diego (SAN) flights
Southwest Airlines, United Airlines, Frontier Airlines, Alaska Airlines, SkyWest Airlines fly nonstop from Denver International Airport to San Diego International Airport, with about 122 flights a week in July 2026. The 853-mile flight takes about 2h 23m gate to gate.
- Distance
- 853 mi · 1,373 km
- Flight time
- 2h 23m
- Airlines
- 5
- Seats filled
- 81%
Airlines flying DEN to SAN
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 48 | Boeing 737 MAX 8, Boeing 737-700 / MAX 7, Boeing 737-800 | 313,965 | 2h 20m |
| United Airlines | 40 | Airbus A321, Boeing 737-900ER, Boeing 737 MAX 9 | 329,135 | 2h 23m |
| Frontier Airlines | 14 | Airbus A320neo, Airbus A321, Airbus A320-100/200 | 122,730 | 2h 23m |
| Alaska Airlines | 14 | Boeing 737 MAX 9, Boeing 737-900ER, Boeing 737-800 | 52,949 | 2h 28m |
| SkyWest Airlines | 6 | Embraer E175 | 20,389 | 2h 39m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
DEN to SAN flight schedule
31 flight numbers flew this route in August 2026, 10 of them almost daily. The first usually leaves at 6:00am and the last at 10:29pm. 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) |
|---|---|---|---|---|
| AS 1617Alaska Airlines | 6:00am | 7:34am | 18 | 93% |
| AS 1424Alaska Airlines | 6:20am | 7:50am | 13 | 69% |
| WN 536Southwest Airlines | 7:35am | 8:55am | 8 | n/a |
| F9 2421Frontier Airlines | 7:40am | 9:05am | 31 | 85% |
| UA 2309United Airlines | 7:43am | 9:05am | 31 | 91% |
| WN 967Southwest Airlines | 7:55am | 9:25am | 12 | 92% |
| WN 1657Southwest Airlines | 9:00am | 10:20am | 28 | 71% |
| WN 2094Southwest Airlines | 9:45am | 11:15am | 4 | n/a |
| WN 1658Southwest Airlines | 10:30am | 11:55am | 28 | 14% |
| UA 1940United Airlines | 11:15am | 12:41pm | 31 | 78% |
| AS 1618Alaska Airlines | 11:32am | 1:05pm | 18 | 73% |
| WN 1655Southwest Airlines | 12:05pm | 1:30pm | 12 | 58% |
| WN 716Southwest Airlines | 12:30pm | 1:50pm | 12 | 17% |
| WN 1416Southwest Airlines | 12:50pm | 2:10pm | 4 | n/a |
| UA 1302United Airlines | 1:25pm | 2:50pm | 31 | 84% |
| WN 128Southwest Airlines | 1:30pm | 2:55pm | 5 | n/a |
| WN 1405Southwest Airlines | 1:30pm | 2:55pm | 10 | 60% |
| AS 1422Alaska Airlines | 1:43pm | 3:16pm | 13 | 77% |
| WN 4891Southwest Airlines | 1:55pm | 3:25pm | 4 | n/a |
| WN 4902Southwest Airlines | 3:10pm | 4:30pm | 12 | 17% |
| UA 1281United Airlines | 3:35pm | 5:00pm | 31 | 83% |
| WN 3527Southwest Airlines | 4:10pm | 5:35pm | 12 | 33% |
| WN 385Southwest Airlines | 5:20pm | 6:45pm | 12 | 25% |
| UA 540United Airlines | 7:05pm | 8:34pm | 31 | 64% |
| WN 1659Southwest Airlines | 7:10pm | 8:30pm | 12 | 25% |
| AS 3020Alaska Airlines · operated by SkyWest Airlines | 7:59pm | 9:40pm | 17 | 27% |
| AS 3029Alaska Airlines · operated by SkyWest Airlines | 8:06pm | 9:50pm | 13 | 67% |
| WN 4022Southwest Airlines | 8:40pm | 10:00pm | 28 | 32% |
| UA 1835United Airlines | 9:00pm | 10:25pm | 7 | 67% |
| UA 2395United Airlines | 9:00pm | 10:27pm | 12 | 33% |
| F9 4989Frontier Airlines | 10:29pm | 11:51pm | 31 | 74% |
Is DEN to SAN on time?
From September 2025 to August 2026, 74% of 6,152 flights arrived within 15 minutes of schedule and 0.8% were cancelled. Flights leaving around 7am were the most punctual (91%), those around 7pm the least (55%). Most delay time was caused by late-arriving aircraft (39%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 2,422 | 67% | 19 min | 0.6% |
| United Airlines | 2,067 | 78% | 14 min | 0.3% |
| Alaska Airlines | 962 | 77% | 13 min | 2% |
| Frontier Airlines | 701 | 80% | 14 min | 1.4% |
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 |
|---|---|---|---|
| 6am to 7am | 318 | 91% | |
| 7am to 8am | 747 | 91% | |
| 8am to 9am | 302 | 88% | |
| 9am to 10am | 199 | 76% | |
| 10am to 11am | 159 | 75% | |
| 11am to 12pm | 576 | 74% | |
| 12pm to 1pm | 244 | 72% | |
| 1pm to 2pm | 548 | 81% | |
| 2pm to 3pm | 130 | 67% | |
| 3pm to 4pm | 459 | 78% | |
| 4pm to 5pm | 251 | 56% | |
| 5pm to 6pm | 143 | 62% | |
| 6pm to 7pm | 275 | 66% | |
| 7pm to 8pm | 670 | 55% | |
| 8pm to 9pm | 380 | 63% | |
| 9pm to 10pm | 382 | 61% | |
| 10pm to 11pm | 303 | 74% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 434 | 66,887 | |
| September 2025 | 408 | 61,814 | |
| October 2025 | 526 | 74,696 | |
| November 2025 | 518 | 67,688 | |
| December 2025 | 533 | 70,437 | |
| January 2026 | 497 | 66,008 | |
| February 2026 | 460 | 64,724 | |
| March 2026 | 531 | 78,738 | |
| April 2026 | 507 | 70,418 | |
| May 2026 | 514 | 69,312 | |
| June 2026 | 523 | 71,750 | |
| July 2026 | 539 | 77,379 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.