Great Falls (GTF) to Denver (DEN) flights
United Airlines flies nonstop from Great Falls International Airport to Denver International Airport, with about 14 flights a week in July 2026. The 623-mile flight takes about 1h 54m gate to gate.
- Distance
- 623 mi · 1,003 km
- Flight time
- 1h 54m
- Airlines
- 1
- Seats filled
- 84%
Airlines flying GTF to DEN
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 14 | Airbus A319, Airbus A320-100/200, Boeing 737-800 | 57,652 | 1h 53m |
| SkyWest AirlinesSeasonal or ended | n/a | Embraer E175 | 13,227 | 1h 58m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
GTF to DEN flight schedule
4 flight numbers flew this route in August 2026, 2 of them almost daily. The first usually leaves at 6:15am and the last at 2:37pm. 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 1925United Airlines | 6:15am | 8:15am | 10 | 89% |
| UA 2107United Airlines | 6:15am | 8:16am | 21 | 95% |
| UA 1246United Airlines | 2:25pm | 4:28pm | 21 | 62% |
| UA 2027United Airlines | 2:37pm | 4:37pm | 10 | 65% |
Is GTF to DEN on time?
From September 2025 to August 2026, 86% of 728 flights arrived within 15 minutes of schedule and 0.8% were cancelled. Flights leaving around 6am were the most punctual (92%), those around 2pm the least (81%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (35%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 728 | 86% | 17 min | 0.8% |
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 | 310 | 92% | |
| 7am to 8am | 55 | 91% | |
| 2pm to 3pm | 363 | 81% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 61 | 6,712 | |
| September 2025 | 60 | 6,790 | |
| October 2025 | 61 | 6,483 | |
| November 2025 | 59 | 4,991 | |
| December 2025 | 62 | 4,824 | |
| January 2026 | 62 | 4,528 | |
| February 2026 | 55 | 3,693 | |
| March 2026 | 61 | 5,585 | |
| April 2026 | 60 | 6,042 | |
| May 2026 | 61 | 6,618 | |
| June 2026 | 60 | 7,311 | |
| July 2026 | 60 | 7,302 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.