Route · DEN → SUN · 2020–2025 BTS data
Denver to Sun Valley/Hailey/Ketchum
The DEN–SUN corridor (Denver, CO → Sun Valley/Hailey/Ketchum, ID) runs ahead of the national average, served by 1 carrier across roughly 557 miles.
Data updated 2026-06-13
- 83.1%
- On-time
- +4.1 pts
- vs US avg
- 78 min
- Delay when late
- 2,224
- Flights
Cancelled
0.8%
Best Month
Sep 2024 96%
Worst Month
Jun 2025 67%
Distance
557 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 49 | 12 | 0 | 1 | OO |
| Nov 2025 | 30 | 1 | 0 | 0 | OO |
| Oct 2025 | 55 | 9 | 0 | 1 | OO |
| Sep 2025 | 60 | 8 | 0 | 0 | OO |
| Aug 2025 | 62 | 16 | 0 | 1 | OO |
| Jul 2025 | 62 | 15 | 0 | 0 | OO |
| Jun 2025 | 60 | 20 | 0 | 0 | OO |
| May 2025 | 42 | 7 | 1 | 0 | OO |
| Apr 2025 | 30 | 2 | 0 | 0 | OO |
| Mar 2025 | 60 | 7 | 0 | 1 | OO |
| Feb 2025 | 56 | 13 | 1 | 0 | OO |
| Jan 2025 | 62 | 16 | 1 | 0 | OO |
| Dec 2024 | 51 | 6 | 1 | 0 | OO |
| Nov 2024 | 30 | 2 | 1 | 0 | OO |
| Oct 2024 | 31 | 1 | 0 | 1 | OO |
| Sep 2024 | 54 | 2 | 0 | 0 | OO |
| Aug 2024 | 62 | 15 | 0 | 4 | OO |
| Jul 2024 | 62 | 14 | 0 | 1 | OO |
| Jun 2024 | 60 | 13 | 0 | 0 | OO |
| May 2024 | 40 | 4 | 0 | 0 | OO |
| Apr 2024 | 38 | 5 | 0 | 0 | OO |
| Mar 2024 | 61 | 7 | 2 | 1 | OO |
| Feb 2024 | 58 | 16 | 2 | 0 | OO |
| Jan 2024 | 62 | 12 | 1 | 2 | OO |
Cancellation Rate
0.8%
10 of 1,237 flights
Diversion Rate
1.1%
13 of 1,237 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 →SUN - Sun Valley/Hailey/Ketchum
Full on-time, delay-cause, and seasonal performance for Sun Valley/Hailey/Ketchum, ID.
Destination airport →Compare the two airports
See DEN and SUN 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–SUN.
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What the Data Says About DEN to SUN
Bureau of Transportation Statistics records show Denver to Sun Valley/Hailey/Ketchum (DEN to SUN) running a 83.1% on-time rate over 2,224 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 77.7 minutes. The 557-mile corridor is served by 1 carrier, and over the last 24 months 0.8% of 1,237 flights were cancelled, 1.1% diverted.
The monthly split is wide on this route: Sep 2024 posted the strongest performance at 96% on-time, while Jun 2025 came in at just 67% - a 30-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from DEN to SUN? ▼
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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.