Route · BIL → DEN · 2020–2025 BTS data
Billings to Denver
The BIL–DEN corridor (Billings, MT → Denver, CO) runs ahead of the national average, served by 12 carriers across roughly 455 miles.
Data updated 2026-06-13
- 81.6%
- On-time
- +2.6 pts
- vs US avg
- 80 min
- Delay when late
- 7,478
- Flights
Cancelled
1.0%
Best Month
Dec 2024 95%
Worst Month
Feb 2025 64%
Distance
455 mi
Carriers
12
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 125 | 23 | 3 | 0 | UA,OO |
| Nov 2025 | 146 | 19 | 4 | 0 | OO,UA |
| Oct 2025 | 155 | 21 | 0 | 0 | OO,UA |
| Sep 2025 | 167 | 32 | 0 | 1 | UA,OO |
| Aug 2025 | 181 | 57 | 1 | 1 | OO,UA |
| Jul 2025 | 183 | 51 | 3 | 5 | OO,UA |
| Jun 2025 | 180 | 60 | 2 | 3 | OO,UA |
| May 2025 | 165 | 50 | 2 | 1 | OO,UA |
| Apr 2025 | 150 | 37 | 3 | 1 | OO,UA |
| Mar 2025 | 125 | 16 | 1 | 0 | OO,UA |
| Feb 2025 | 112 | 40 | 2 | 0 | OO,UA |
| Jan 2025 | 124 | 33 | 1 | 0 | OO,UA |
| Dec 2024 | 123 | 6 | 0 | 0 | OO,UA |
| Nov 2024 | 116 | 24 | 3 | 0 | OO,UA |
| Oct 2024 | 151 | 16 | 0 | 0 | UA,OO |
| Sep 2024 | 150 | 16 | 0 | 0 | OO,UA |
| Aug 2024 | 142 | 27 | 0 | 0 | OO,UA |
| Jul 2024 | 138 | 24 | 2 | 0 | OO,UA |
| Jun 2024 | 150 | 28 | 3 | 1 | OO,UA |
| May 2024 | 128 | 16 | 1 | 0 | OO,UA |
| Apr 2024 | 119 | 14 | 0 | 0 | OO,UA |
| Mar 2024 | 68 | 8 | 0 | 0 | OO,UA |
| Feb 2024 | 58 | 15 | 0 | 0 | UA |
| Jan 2024 | 62 | 14 | 2 | 0 | UA |
Cancellation Rate
1.0%
33 of 3,218 flights
Diversion Rate
0.4%
13 of 3,218 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
BIL - Billings
Full on-time, delay-cause, and seasonal performance for Billings, MT.
Origin airport →DEN - Denver
Full on-time, delay-cause, and seasonal performance for Denver, CO.
Destination airport →Compare the two airports
See BIL 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 BIL–DEN.
Routes with a similar on-time rate
What the Data Says About BIL to DEN
7,478 tracked flights put the BIL to DEN pairing (Billings to Denver) at a 81.6% on-time rate, squarely in line with the wider network. Delays that do occur run 79.5 minutes on average. Across the 455-mile route and its 12 carriers, the trailing 24 months show 1.0% cancelled and 0.4% diverted (3,218 flights sampled).
The monthly split is wide on this route: Dec 2024 posted the strongest performance at 95% on-time, while Feb 2025 came in at just 64% - a 31-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from BIL to DEN? ▼
What is the cancellation rate for BIL to DEN? ▼
How far is the flight from BIL to DEN? ▼
When is the best time to fly from BIL to DEN? ▼
Flight Guides
Tips and data-driven advice for choosing reliable routes.
Explore PlainFlights
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.