Route · DEN → BOI · 2020–2025 BTS data
Denver to Boise
The DEN–BOI corridor (Denver, CO → Boise, ID) runs behind the national average, served by 12 carriers across roughly 649 miles.
Data updated 2026-06-13
- 77.6%
- On-time
- -1.4 pts
- vs US avg
- 62 min
- Delay when late
- 14,552
- Flights
Cancelled
0.6%
Best Month
Nov 2025 89%
Worst Month
Jun 2025 62%
Distance
649 mi
Carriers
12
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 259 | 70 | 0 | 0 | WN,F9,UA,OO |
| Nov 2025 | 245 | 28 | 0 | 6 | OO,UA,F9,WN |
| Oct 2025 | 260 | 56 | 0 | 1 | OO,UA,WN,F9 |
| Sep 2025 | 250 | 43 | 0 | 0 | UA,WN,OO,F9 |
| Aug 2025 | 259 | 78 | 1 | 0 | OO,WN,F9,UA |
| Jul 2025 | 261 | 92 | 4 | 0 | OO,UA,WN,F9 |
| Jun 2025 | 254 | 97 | 0 | 0 | OO,UA,WN,F9 |
| May 2025 | 257 | 73 | 1 | 0 | OO,UA,WN,F9 |
| Apr 2025 | 242 | 58 | 1 | 0 | OO,UA,WN |
| Mar 2025 | 244 | 31 | 0 | 0 | OO,UA,WN |
| Feb 2025 | 222 | 62 | 0 | 0 | OO,UA,WN |
| Jan 2025 | 244 | 62 | 0 | 2 | OO,UA,WN |
| Dec 2024 | 246 | 42 | 1 | 1 | OO,UA,WN |
| Nov 2024 | 231 | 45 | 2 | 0 | OO,UA,WN |
| Oct 2024 | 243 | 30 | 0 | 0 | UA,OO,WN |
| Sep 2024 | 235 | 38 | 0 | 0 | WN,OO,UA |
| Aug 2024 | 245 | 75 | 3 | 0 | WN,OO,UA |
| Jul 2024 | 255 | 84 | 3 | 0 | OO,UA,WN |
| Jun 2024 | 244 | 79 | 0 | 0 | OO,UA,WN |
| May 2024 | 244 | 72 | 2 | 0 | OO,UA,WN |
| Apr 2024 | 238 | 46 | 0 | 1 | OO,UA,WN |
| Mar 2024 | 210 | 40 | 2 | 0 | OO,UA,WN |
| Feb 2024 | 203 | 48 | 1 | 0 | OO,UA,WN |
| Jan 2024 | 218 | 48 | 14 | 1 | WN,OO,UA |
Cancellation Rate
0.6%
35 of 5,809 flights
Diversion Rate
0.2%
12 of 5,809 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
DEN - Denver
Full on-time, delay-cause, and seasonal performance for Denver, CO.
Origin airport →BOI - Boise
Full on-time, delay-cause, and seasonal performance for Boise, ID.
Destination airport →Compare the two airports
See DEN and BOI side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to DEN–BOI.
Routes with a similar on-time rate
What the Data Says About DEN to BOI
The Denver to Boise corridor (DEN to BOI) posts a 77.6% on-time rate on the lower edge of the average band, based on 14,552 tracked flights. Late flights run 61.7 minutes behind on average. 12 carriers cover the 649-mile route; over the last 24 months, 35 of 5,809 flights were cancelled (0.6%) and 0.2% diverted.
The monthly split is wide on this route: Nov 2025 posted the strongest performance at 89% on-time, while Jun 2025 came in at just 62% - a 27-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.