Route · DEN → SLC · 2020–2025 BTS data
Denver to Salt Lake City
The DEN–SLC corridor (Denver, CO → Salt Lake City, UT) runs behind the national average, served by 21 carriers across roughly 391 miles.
Data updated 2026-06-13
- 78.3%
- On-time
- -0.7 pts
- vs US avg
- 67 min
- Delay when late
- 43,089
- Flights
Cancelled
0.6%
Best Month
Sep 2024 86%
Worst Month
Jul 2025 60%
Distance
391 mi
Carriers
21
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 628 | 175 | 2 | 0 | DL,WN,F9,UA,OO |
| Nov 2025 | 588 | 94 | 11 | 0 | OO,UA,DL,F9,WN |
| Oct 2025 | 663 | 120 | 0 | 3 | OO,UA,WN,DL,F9 |
| Sep 2025 | 644 | 115 | 0 | 0 | UA,WN,OO,DL,F9 |
| Aug 2025 | 669 | 176 | 5 | 0 | OO,WN,F9,UA,DL |
| Jul 2025 | 687 | 275 | 10 | 2 | OO,UA,WN,DL,F9 |
| Jun 2025 | 664 | 230 | 1 | 1 | DL,OO,UA,WN,F9 |
| May 2025 | 645 | 171 | 1 | 1 | OO,UA,WN,DL,F9 |
| Apr 2025 | 634 | 132 | 4 | 0 | DL,F9,OO,UA,WN |
| Mar 2025 | 673 | 103 | 2 | 1 | DL,OO,UA,WN,F9 |
| Feb 2025 | 614 | 161 | 0 | 0 | DL,OO,UA,WN,F9 |
| Jan 2025 | 648 | 161 | 2 | 0 | DL,OO,UA,WN,F9 |
| Dec 2024 | 646 | 108 | 0 | 0 | DL,F9,OO,UA,WN |
| Nov 2024 | 602 | 113 | 7 | 0 | OO,UA,WN,DL,F9 |
| Oct 2024 | 661 | 95 | 0 | 1 | UA,OO,WN,DL,F9 |
| Sep 2024 | 648 | 88 | 0 | 0 | WN,OO,UA,DL,F9 |
| Aug 2024 | 695 | 197 | 3 | 2 | DL,F9,WN,OO,UA |
| Jul 2024 | 703 | 199 | 16 | 0 | DL,F9,OO,UA,WN |
| Jun 2024 | 689 | 195 | 4 | 1 | DL,F9,OO,UA,WN |
| May 2024 | 726 | 194 | 4 | 0 | DL,F9,OO,UA,WN |
| Apr 2024 | 707 | 156 | 1 | 0 | DL,F9,OO,UA,WN |
| Mar 2024 | 725 | 152 | 13 | 0 | DL,F9,OO,UA,WN |
| Feb 2024 | 637 | 145 | 4 | 0 | DL,F9,OO,UA,WN |
| Jan 2024 | 664 | 168 | 8 | 0 | DL,F9,WN,OO,UA |
Cancellation Rate
0.6%
98 of 15,860 flights
Diversion Rate
0.1%
12 of 15,860 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 →SLC - Salt Lake City
Full on-time, delay-cause, and seasonal performance for Salt Lake City, UT.
Destination airport →Compare the two airports
See DEN and SLC 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–SLC.
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What the Data Says About DEN to SLC
The Denver to Salt Lake City corridor (DEN to SLC) posts a 78.3% on-time rate on the lower edge of the average band, based on 43,089 tracked flights. Late flights run 67.1 minutes behind on average. 21 carriers cover the 391-mile route; over the last 24 months, 98 of 15,860 flights were cancelled (0.6%) and 0.1% diverted.
The monthly split is wide on this route: Sep 2024 posted the strongest performance at 86% on-time, while Jul 2025 came in at just 60% - a 26-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.