Denver (DEN) to San Antonio (SAT) flights
Southwest Airlines, United Airlines, Frontier Airlines fly nonstop from Denver International Airport to San Antonio International Airport, with about 65 flights a week in July 2026. The 794-mile flight takes about 2h 6m gate to gate.
- Distance
- 794 mi · 1,278 km
- Flight time
- 2h 6m
- Airlines
- 3
- Seats filled
- 77%
Airlines flying DEN to SAT
| 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 | 170,038 | 2h 3m |
| United Airlines | 28 | Boeing 737-800, Airbus A320-100/200, Boeing 737 MAX 8 | 158,592 | 2h 8m |
| Frontier Airlines | 7 | Airbus A320neo, Airbus A321, Airbus A320-100/200 | 61,547 | 2h 11m |
| SkyWest AirlinesSeasonal or ended | n/a | Embraer E175 | 1,199 | 2h 10m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
DEN to SAT flight schedule
11 flight numbers flew this route in August 2026, 8 of them almost daily. The first usually leaves at 8:30am and the last at 8:39pm. 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 1661Southwest Airlines | 8:30am | 11:40am | 28 | 89% |
| UA 2625United Airlines | 9:35am | 12:43pm | 31 | 93% |
| WN 1663Southwest Airlines | 12:10pm | 3:20pm | 28 | 71% |
| UA 1022United Airlines | 1:45pm | 4:55pm | 31 | 89% |
| WN 553Southwest Airlines | 4:00pm | 7:10pm | 12 | 33% |
| F9 2356Frontier Airlines | 4:13pm | 7:31pm | 30 | 81% |
| UA 2819United Airlines | 5:40pm | 8:52pm | 31 | 56% |
| WN 4035Southwest Airlines | 6:00pm | 9:25pm | 24 | 42% |
| WN 3293Southwest Airlines | 6:45pm | 9:55pm | 4 | n/a |
| UA 4741United Airlines · operated by SkyWest Airlines | 8:35pm | 11:57pm | 21 | 50% |
| UA 395United Airlines | 8:39pm | 11:55pm | 10 | 65% |
Is DEN to SAT on time?
From September 2025 to August 2026, 77% of 3,067 flights arrived within 15 minutes of schedule and 0.3% were cancelled. Flights leaving around 9am were the most punctual (91%), those around 8pm the least (58%). Most delay time was caused by late-arriving aircraft (57%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 1,435 | 70% | 17 min | 0.3% |
| United Airlines | 1,236 | 83% | 14 min | 0.2% |
| Frontier Airlines | 396 | 81% | 13 min | 0.3% |
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 | 103 | 86% | |
| 8am to 9am | 194 | 90% | |
| 9am to 10am | 422 | 91% | |
| 10am to 11am | 104 | 84% | |
| 11am to 12pm | 104 | 79% | |
| 12pm to 1pm | 101 | 80% | |
| 1pm to 2pm | 499 | 85% | |
| 2pm to 3pm | 77 | 65% | |
| 3pm to 4pm | 234 | 76% | |
| 4pm to 5pm | 204 | 67% | |
| 5pm to 6pm | 411 | 67% | |
| 6pm to 7pm | 137 | 67% | |
| 7pm to 8pm | 146 | 54% | |
| 8pm to 9pm | 202 | 58% | |
| 9pm to 10pm | 84 | 75% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 238 | 30,829 | |
| September 2025 | 220 | 29,323 | |
| October 2025 | 253 | 34,106 | |
| November 2025 | 243 | 30,190 | |
| December 2025 | 281 | 33,900 | |
| January 2026 | 224 | 29,003 | |
| February 2026 | 193 | 27,254 | |
| March 2026 | 299 | 38,197 | |
| April 2026 | 249 | 30,147 | |
| May 2026 | 269 | 34,438 | |
| June 2026 | 280 | 37,541 | |
| July 2026 | 290 | 37,072 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.