BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
SLC→DEN

Salt Lake City, UT (SLC) to Denver, CO (DEN) flight delay odds

77.2% of 7,757 official scheduled SLC-to-DEN flights arrived on time; 13.7% arrived at least 30 minutes late and 0.6% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
77.2%arrived on time
13.7%30+ min late
0.6%cancelled
7,757scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.7%all scheduled flights
120+ minutes late2.4%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+5.4 mincompleted flights

Which departure time was most reliable for SLC to DEN?

Among qualifying SLC-to-DEN departure window results, Early morning had the highest on-time rate: 84.6% of 2,315 flights. Evening was lowest at 68.7% across 1,490 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning2,31584.6%7.9%0.3%
Late morning1,29379.9%10.1%0.4%
Afternoon2,29573.3%16.1%0.8%
Evening1,49068.7%21.6%0.7%
Night36479.9%14.8%0.3%

Which weekday was most reliable for SLC to DEN?

Among qualifying SLC-to-DEN weekday results, Saturday had the highest on-time rate: 82.1% of 946 flights. Friday was lowest at 72.5% across 1,160 flights.

DayFlightsOn time30+ minCancelled
Monday1,16276.3%16.0%0.3%
Tuesday1,10279.5%12.3%0.6%
Wednesday1,10375.3%14.7%0.5%
Thursday1,15075.9%14.4%0.5%
Friday1,16072.5%16.6%0.8%
Saturday94682.1%9.8%1.0%
Sunday1,13479.7%10.9%0.3%

Which airline was most reliable for SLC to DEN?

Among qualifying SLC-to-DEN airline results, SkyWest Airlines had the highest on-time rate: 84.1% of 1,395 flights. Southwest Airlines was lowest at 71.7% across 2,328 flights.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines2,32871.7%16.4%0.7%
Delta Air Lines1,69078.9%13.9%0.2%
SkyWest Airlines1,39584.1%9.6%0.6%
United Airlines1,33277.3%13.1%0.4%
Frontier Airlines1,01277.4%13.2%0.9%

Which month was most reliable for SLC to DEN?

Among qualifying SLC-to-DEN month results, November 2025 had the highest on-time rate: 82.2% of 589 flights. July 2025 was lowest at 62.5% across 688 flights.

MonthFlightsOn time30+ minCancelled
July 202568862.5%26.3%1.0%
August 202566970.6%18.4%0.4%
September 202564480.1%11.5%0.2%
October 202566279.6%12.7%0.0%
November 202558982.2%8.1%2.4%
December 202562375.4%14.4%0.5%
January 202663479.3%9.6%0.3%
February 202661582.0%10.1%0.8%
March 202667279.8%13.1%0.7%
April 202664080.2%10.5%0.0%
May 202666378.3%13.1%0.3%
June 202665878.3%14.3%0.2%

What drove SLC to DEN delay minutes?

National airspace was the largest recorded SLC-to-DEN delay category, accounting for 34.3% of 104,254 BTS-attributed delay minutes during July 2025–June 2026.

Airline32.7%
Late aircraft30.7%
National airspace34.3%
Weather2.2%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.