Route
DEN → SLC
Denver International Airport Salt Lake City International Airport
How punctual is this route?
- On-time arrivals
- 78.2%
- Less than 15 minutes late
- Cancelled
- 0.4%
- Of scheduled flights
- Average delay when late
- 65 min
- Flights arriving 15+ minutes late
- Flights tracked
- 7,713
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 45%
- Airline (crew, maintenance, cleaning) 37%
- Air traffic control & airport 13%
- Extreme weather 4%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 82.1% | 644 |
| October 2025 | 81.8% | 663 |
| November 2025 | 83.7% | 588 |
| December 2025 | 72.0% | 628 |
| January 2026 | 83.6% | 634 |
| February 2026 | 84.1% | 616 |
| March 2026 | 80.5% | 668 |
| April 2026 | 81.8% | 639 |
| May 2026 | 81.2% | 665 |
| June 2026 | 68.8% | 657 |
| July 2026 | 73.1% | 662 |
| August 2026 | 66.8% | 649 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Southwest Airlines | 2,280 | 72.1% | 0.4% | 57 min |
| Delta Air Lines | 1,698 | 82.0% | 0.4% | 82 min |
| SkyWest Airlines | 1,386 | 80.2% | 0.6% | 71 min |
| United Airlines | 1,316 | 79.0% | 0.2% | 63 min |
| Frontier Airlines | 1,033 | 81.9% | 0.3% | 61 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
DL2663
31% late · 365 flights
-
UA1963
20% late · 365 flights
-
DL1581
9% late · 360 flights
-
OO5762
29% late · 328 flights
-
F94251
30% late · 275 flights
-
DL2544
12% late · 274 flights
-
DL1623
19% late · 271 flights
-
DL1553
21% late · 253 flights
-
F93219
18% late · 230 flights
-
UA497
10% late · 214 flights
-
OO5646
22% late · 199 flights
-
F93981
14% late · 187 flights
-
UA1773
27% late · 183 flights
-
UA1840
17% late · 174 flights
-
F93861
4% late · 157 flights
-
F94721
20% late · 136 flights
-
UA2348
20% late · 129 flights
-
OO5665
15% late · 102 flights
-
OO5572
16% late · 80 flights
-
OO4756
22% late · 73 flights
-
OO5261
26% late · 72 flights
-
DL1663
23% late · 71 flights
-
UA2769
48% late · 66 flights
-
WN2642
14% late · 63 flights
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