Route
SLC → DEN
Salt Lake City International Airport Denver International Airport
How punctual is this route?
- On-time arrivals
- 79.0%
- Less than 15 minutes late
- Cancelled
- 0.5%
- Of scheduled flights
- Average delay when late
- 66 min
- Flights arriving 15+ minutes late
- Flights tracked
- 7,709
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 35%
- Airline (crew, maintenance, cleaning) 31%
- Late-arriving aircraft 31%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 80.5% | 644 |
| October 2025 | 79.6% | 662 |
| November 2025 | 84.2% | 589 |
| December 2025 | 76.3% | 623 |
| January 2026 | 79.6% | 634 |
| February 2026 | 82.8% | 615 |
| March 2026 | 80.4% | 672 |
| April 2026 | 80.2% | 640 |
| May 2026 | 78.9% | 663 |
| June 2026 | 78.6% | 658 |
| July 2026 | 77.2% | 659 |
| August 2026 | 70.1% | 650 |
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 | 2,283 | 72.4% | 0.6% | 54 min |
| Delta Air Lines | 1,697 | 79.8% | 0.2% | 68 min |
| SkyWest Airlines | 1,378 | 85.7% | 0.6% | 72 min |
| United Airlines | 1,318 | 82.0% | 0.5% | 75 min |
| Frontier Airlines | 1,033 | 79.3% | 0.9% | 83 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
F93862
20% late · 360 flights
-
DL1623
15% late · 359 flights
-
DL1586
32% late · 344 flights
-
DL1553
21% late · 324 flights
-
OO4720
9% late · 283 flights
-
DL1667
20% late · 272 flights
-
OO5683
6% late · 264 flights
-
OO5642
17% late · 255 flights
-
F93982
25% late · 247 flights
-
UA1662
22% late · 238 flights
-
UA1232
5% late · 198 flights
-
UA2643
9% late · 162 flights
-
F93220
13% late · 158 flights
-
F94252
20% late · 147 flights
-
UA1496
14% late · 125 flights
-
DL681
22% late · 122 flights
-
F94236
23% late · 121 flights
-
DL1317
7% late · 117 flights
-
DL3172
14% late · 110 flights
-
UA1910
33% late · 108 flights
-
UA1790
26% late · 107 flights
-
OO5548
19% late · 81 flights
-
UA2004
7% late · 70 flights
-
WN3738
5% late · 61 flights
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