Route
GTF → DEN
Great Falls International Airport Denver International Airport
How punctual is this route?
- On-time arrivals
- 86.1%
- Less than 15 minutes late
- Cancelled
- 0.8%
- Of scheduled flights
- Average delay when late
- 124 min
- Flights arriving 15+ minutes late
- Flights tracked
- 728
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 35%
- Late-arriving aircraft 30%
- Air traffic control & airport 24%
- Extreme weather 11%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 85.0% | 60 |
| October 2025 | 85.2% | 62 |
| November 2025 | 91.5% | 59 |
| December 2025 | 88.7% | 62 |
| January 2026 | 91.8% | 62 |
| February 2026 | 92.7% | 56 |
| March 2026 | 91.8% | 62 |
| April 2026 | 91.7% | 60 |
| May 2026 | 86.7% | 62 |
| June 2026 | 73.3% | 60 |
| July 2026 | 78.3% | 61 |
| August 2026 | 77.4% | 62 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| United Airlines | 527 | 84.1% | 0.8% | 123 min |
| SkyWest Airlines | 201 | 91.5% | 1.0% | 126 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1925
11% late · 82 flights
-
UA2027
35% late · 81 flights
-
OO5441
12% late · 74 flights
-
OO4750
7% late · 68 flights
-
UA1965
22% late · 55 flights
-
UA1656
15% late · 53 flights
-
UA2075
6% late · 53 flights
-
OO4782
6% late · 37 flights
-
UA1840
6% late · 36 flights
-
UA2317
17% late · 31 flights
-
UA1865
0% late · 24 flights
-
UA1894
9% late · 24 flights
-
UA1561
9% late · 23 flights
-
OO5237
5% late · 21 flights
-
UA1246
38% late · 21 flights
-
UA2107
5% late · 21 flights
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