Route · GTF → DEN · 2020–2025 BTS data
Great Falls to Denver
The GTF–DEN corridor (Great Falls, MT → Denver, CO) runs ahead of the national average, served by 4 carriers across roughly 623 miles.
Data updated 2026-06-13
- 83.1%
- On-time
- +4.1 pts
- vs US avg
- 101 min
- Delay when late
- 4,495
- Flights
Cancelled
1.2%
Best Month
Dec 2024 95%
Worst Month
Jan 2025 71%
Distance
623 mi
Carriers
4
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 62 | 7 | 0 | 0 | UA,OO |
| Nov 2025 | 59 | 5 | 0 | 0 | OO,UA |
| Oct 2025 | 62 | 9 | 1 | 0 | OO,UA |
| Sep 2025 | 60 | 9 | 0 | 0 | UA |
| Aug 2025 | 62 | 17 | 1 | 0 | UA |
| Jul 2025 | 62 | 14 | 0 | 2 | UA |
| Jun 2025 | 60 | 17 | 0 | 0 | UA |
| May 2025 | 62 | 13 | 0 | 1 | OO,UA |
| Apr 2025 | 60 | 10 | 0 | 0 | OO |
| Mar 2025 | 62 | 6 | 0 | 1 | OO |
| Feb 2025 | 56 | 14 | 0 | 0 | OO |
| Jan 2025 | 62 | 18 | 0 | 0 | OO,UA |
| Dec 2024 | 62 | 3 | 0 | 0 | OO,UA |
| Nov 2024 | 59 | 11 | 2 | 0 | OO |
| Oct 2024 | 62 | 4 | 0 | 0 | OO |
| Sep 2024 | 60 | 3 | 0 | 0 | OO,UA |
| Aug 2024 | 62 | 7 | 1 | 0 | UA |
| Jul 2024 | 62 | 7 | 4 | 0 | UA |
| Jun 2024 | 60 | 12 | 1 | 0 | UA |
| May 2024 | 62 | 6 | 0 | 0 | OO,UA |
| Apr 2024 | 60 | 5 | 0 | 0 | OO |
| Mar 2024 | 62 | 7 | 2 | 0 | OO |
| Feb 2024 | 58 | 16 | 3 | 0 | OO |
| Jan 2024 | 62 | 10 | 3 | 0 | OO |
Cancellation Rate
1.2%
18 of 1,460 flights
Diversion Rate
0.3%
4 of 1,460 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
GTF - Great Falls
Full on-time, delay-cause, and seasonal performance for Great Falls, MT.
Origin airport →DEN - Denver
Full on-time, delay-cause, and seasonal performance for Denver, CO.
Destination airport →Compare the two airports
See GTF and DEN side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to GTF–DEN.
Routes with a similar on-time rate
What the Data Says About GTF to DEN
Bureau of Transportation Statistics records show Great Falls to Denver (GTF to DEN) running a 83.1% on-time rate over 4,495 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 101.3 minutes. The 623-mile corridor is served by 4 carriers, and over the last 24 months 1.2% of 1,460 flights were cancelled, 0.3% diverted.
The monthly split is wide on this route: Dec 2024 posted the strongest performance at 95% on-time, while Jan 2025 came in at just 71% - a 24-point swing worth factoring into travel timing.
Frequently Asked Questions
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.