Denver (DEN) to Boise (BOI) flights
Southwest Airlines, United Airlines, SkyWest Airlines, Frontier Airlines fly nonstop from Denver International Airport to Boise Air Terminal/Gowen Field, with about 58 flights a week in July 2026. The 649-mile flight takes about 1h 59m gate to gate.
- Distance
- 649 mi · 1,044 km
- Flight time
- 1h 59m
- Airlines
- 4
- Seats filled
- 84%
Airlines flying DEN to BOI
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 21 | Boeing 737 MAX 8, Boeing 737-700 / MAX 7, Boeing 737-800 | 147,540 | 1h 54m |
| United Airlines | 21 | Boeing 737-900ER, Boeing 737-800, Airbus A320-100/200 | 137,068 | 1h 59m |
| SkyWest Airlines | 14 | Embraer E175, Bombardier CRJ700, Embraer E170 | 55,412 | 2h 5m |
| Frontier Airlines | 3 | Airbus A320neo, Airbus A321, Airbus A320-100/200 | 16,590 | 2h 3m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
DEN to BOI flight schedule
15 flight numbers flew this route in August 2026, 7 of them almost daily. The first usually leaves at 7:40am and the last at 8:40pm. 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 255United Airlines | 7:40am | 9:35am | 20 | 90% |
| UA 4765United Airlines · operated by SkyWest Airlines | 7:45am | 9:53am | 10 | 98% |
| WN 1313Southwest Airlines | 8:45am | 10:35am | 4 | n/a |
| WN 113Southwest Airlines | 9:00am | 10:50am | 20 | 90% |
| WN 4333Southwest Airlines | 9:05am | 10:55am | 4 | n/a |
| F9 3933Frontier Airlines | 10:29am | 12:29pm | 13 | 81% |
| UA 2255United Airlines | 11:38am | 1:38pm | 31 | 81% |
| WN 790Southwest Airlines | 1:00pm | 2:50pm | 8 | n/a |
| WN 505Southwest Airlines | 1:35pm | 3:30pm | 4 | n/a |
| WN 921Southwest Airlines | 2:15pm | 4:10pm | 4 | n/a |
| WN 1460Southwest Airlines | 2:20pm | 4:15pm | 12 | 58% |
| UA 2602United Airlines | 4:00pm | 5:58pm | 31 | 62% |
| UA 2014United Airlines | 7:37pm | 9:37pm | 31 | 69% |
| UA 5923United Airlines · operated by SkyWest Airlines | 8:32pm | 10:40pm | 31 | 72% |
| WN 1461Southwest Airlines | 8:40pm | 10:35pm | 27 | 26% |
Is DEN to BOI on time?
From September 2025 to August 2026, 76% of 3,038 flights arrived within 15 minutes of schedule and 0.1% were cancelled. Flights leaving around 7am were the most punctual (93%), those around 8pm the least (62%). Most delay time was caused by late-arriving aircraft (52%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 1,817 | 79% | 15 min | 0.1% |
| Southwest Airlines | 1,089 | 72% | 15 min | 0.1% |
| Frontier Airlines | 132 | 81% | 8 min | 0% |
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 | 454 | 93% | |
| 8am to 9am | 231 | 87% | |
| 9am to 10am | 127 | 84% | |
| 11am to 12pm | 375 | 85% | |
| 1pm to 2pm | 140 | 70% | |
| 2pm to 3pm | 64 | 75% | |
| 3pm to 4pm | 422 | 72% | |
| 5pm to 6pm | 66 | 74% | |
| 7pm to 8pm | 394 | 69% | |
| 8pm to 9pm | 393 | 62% | |
| 9pm to 10pm | 167 | 70% | |
| 10pm to 11pm | 71 | 62% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 263 | 32,354 | |
| September 2025 | 252 | 29,530 | |
| October 2025 | 262 | 30,402 | |
| November 2025 | 242 | 27,186 | |
| December 2025 | 262 | 29,281 | |
| January 2026 | 263 | 25,150 | |
| February 2026 | 236 | 24,831 | |
| March 2026 | 256 | 29,732 | |
| April 2026 | 250 | 27,321 | |
| May 2026 | 262 | 33,238 | |
| June 2026 | 255 | 34,334 | |
| July 2026 | 259 | 33,275 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.