San Antonio (SAT) to Denver (DEN) flights
Southwest Airlines, United Airlines, Frontier Airlines fly nonstop from San Antonio International Airport to Denver International Airport, with about 65 flights a week in July 2026. The 794-mile flight takes about 2h 15m gate to gate.
- Distance
- 794 mi · 1,278 km
- Flight time
- 2h 15m
- Airlines
- 3
- Seats filled
- 78%
Airlines flying SAT to DEN
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 31 | Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800 | 169,175 | 2h 10m |
| United Airlines | 27 | Boeing 737-800, Airbus A320-100/200, Airbus A319 | 155,399 | 2h 19m |
| Frontier Airlines | 7 | Airbus A320neo, Airbus A321, Airbus A320-100/200 | 63,516 | 2h 20m |
| SkyWest AirlinesSeasonal or ended | n/a | Embraer E175, Bombardier CRJ200 | 1,027 | 2h 24m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SAT to DEN flight schedule
13 flight numbers flew this route in August 2026, 7 of them almost daily. The first usually leaves at 5:30am and the last at 8:26pm. 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 5452United Airlines · operated by SkyWest Airlines | 5:30am | 6:56am | 21 | 95% |
| UA 1464United Airlines | 5:40am | 6:59am | 10 | 94% |
| WN 3487Southwest Airlines | 6:25am | 7:35am | 20 | 94% |
| WN 375Southwest Airlines | 7:05am | 8:15am | 4 | n/a |
| UA 2853United Airlines | 9:10am | 10:34am | 31 | 85% |
| WN 3488Southwest Airlines | 9:30am | 10:40am | 18 | 61% |
| WN 800Southwest Airlines | 1:10pm | 2:20pm | 4 | n/a |
| UA 1007United Airlines | 1:45pm | 3:03pm | 31 | 88% |
| WN 4646Southwest Airlines | 2:20pm | 3:30pm | 24 | 92% |
| UA 2479United Airlines | 4:39pm | 6:08pm | 31 | 73% |
| WN 4724Southwest Airlines | 6:10pm | 7:30pm | 16 | 53% |
| WN 966Southwest Airlines | 6:30pm | 7:50pm | 8 | n/a |
| F9 3707Frontier Airlines | 8:26pm | 10:03pm | 30 | 77% |
Is SAT to DEN on time?
From September 2025 to August 2026, 82% of 3,063 flights arrived within 15 minutes of schedule and 0.5% were cancelled. Flights leaving around 5am were the most punctual (96%), those around 6pm the least (62%). Most delay time was caused by late-arriving aircraft (41%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 1,433 | 81% | 11 min | 0.4% |
| United Airlines | 1,236 | 84% | 14 min | 0.6% |
| Frontier Airlines | 394 | 81% | 18 min | 0.5% |
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 | 346 | 96% | |
| 6am to 7am | 206 | 93% | |
| 8am to 9am | 324 | 86% | |
| 9am to 10am | 154 | 88% | |
| 10am to 11am | 160 | 92% | |
| 11am to 12pm | 82 | 84% | |
| 12pm to 1pm | 169 | 84% | |
| 1pm to 2pm | 419 | 85% | |
| 2pm to 3pm | 87 | 77% | |
| 3pm to 4pm | 93 | 81% | |
| 4pm to 5pm | 416 | 74% | |
| 6pm to 7pm | 254 | 62% | |
| 7pm to 8pm | 149 | 71% | |
| 8pm to 9pm | 133 | 75% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 235 | 28,511 | |
| September 2025 | 219 | 28,714 | |
| October 2025 | 252 | 33,045 | |
| November 2025 | 241 | 29,058 | |
| December 2025 | 283 | 36,525 | |
| January 2026 | 226 | 27,630 | |
| February 2026 | 191 | 26,141 | |
| March 2026 | 295 | 37,984 | |
| April 2026 | 250 | 31,866 | |
| May 2026 | 264 | 35,767 | |
| June 2026 | 279 | 37,128 | |
| July 2026 | 289 | 36,748 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.