Route · DEN → SLC · 2020–2025 BTS data
Denver to Salt Lake City
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), DEN to SLC (Denver to Salt Lake City) ranks #19 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 78.3%
- On-time
- -0.7 pts
- vs US avg
- 67 min
- Delay when late
- 43,089
- Flights
- #19 of 4927
- Corpus placement
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 |
DEN–SLC seasonal on-time pattern
Best: November (84.9%) · weakest: July (70.6%)
Strongest calendar month
November
84.9% on-time · ~577 flights/mo
Busiest calendar month
March
~639 flights/mo avg
Weakest calendar month
July
70.6% on-time · ~629 flights/mo
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.
DEN on-time profileSLC - Salt Lake City
Full on-time, delay-cause, and seasonal performance for Salt Lake City, UT.
SLC on-time profileCompare the two airports
See DEN and SLC side by side on delays, cancellations, and reliability.
Compare DEN vs SLCOrigin-hub reliability standing
Mid-pack among DEN departures
From DEN, this corridor sits with 133 other 75–85% on-time routes out of 168 tracked departures, not the hub's reliability leaders (8 at ≥85%) and not the softest ( 27 below 75%). Destination: Salt Lake City · fleet on-time rank #3744 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to DEN–SLC.
Routes with a similar on-time rate
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.
On the multi-year calendar, DEN–SLC peaks in November at 84.9% on-time while March carries the heaviest traffic (~639 flights per month) ; the softest month is July at 70.6%, a 14.3-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does DEN to SLC rank among US routes by traffic? ▼
How often are flights delayed from DEN to SLC? ▼
What is the cancellation rate for DEN to SLC? ▼
How far is the flight from DEN to SLC? ▼
When is the best time to fly from DEN to SLC? ▼
Airports on this route
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.
Using DEN–SLC data
DEN–SLC is mid-pack at 78.3% on-time; month and carrier mix move more than the corridor headline.
- Compare DEN and SLC airport profiles: delay causes and top routes differ even on the same corridor. DEN airport
- If your dates flex, November (84.9% on-time) beats July (70.6%) on this corridor. Seasonal chart
- 4 other routes post a similar 78.3% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
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.