Historical on-time performance

SLCDEN

Salt Lake City to Denver

390 miData through Dec 2025Source: US DOT · BTS

Flights on SLC–DEN arrive on time 74% of the time over the last 12 months.

On-time rate74%arrived within 15 min

Median delayon timetypical arrival

p90 delay50 min1 in 10 flights is worsetail risk

Cancelled0.5%of scheduled flights

based on 7,753 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Airline	On-time	Median	p90	Cancel	Flights
Delta Air Lines	75%	on time	55 min	0.1%	1,673
SkyWest Airlinesbest	82%	on time	35 min	0.7%	1,353
Frontier Airlines	72%	on time	50 min	0.7%	969
Southwest Airlines	71%	on time	50 min	0.6%	2,408
United Airlines	72%	on time	45 min	0.3%	1,350

Delta Air Lines
On-time75%
Medianon time
p9055 min
Cancel0.1%
Flights1,673
SkyWest Airlinesbest
On-time82%
Medianon time
p9035 min
Cancel0.7%
Flights1,353
Frontier Airlines
On-time72%
Medianon time
p9050 min
Cancel0.7%
Flights969
Southwest Airlines
On-time71%
Medianon time
p9050 min
Cancel0.6%
Flights2,408
United Airlines
On-time72%
Medianon time
p9045 min
Cancel0.3%
Flights1,350

Why flights run late

Delay causes

Airline31%
Weather3%
Air traffic (NAS)40%
Late aircraft25%
Security0%

Most delay minutes here are attributed to Air traffic (NAS).

Over time

On-time trend

By season

On-time rate by month

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Related pages

Delay predictorfor this route→SLC airportSalt Lake City→DEN airportDenver→ExpressJet Airlines (Continental Express) on this routecarrier detail→ExpressJet Airlines (Continental Express)airline profile→