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

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

77.1% of 7,758 official scheduled DEN-to-SLC flights arrived on time; 14.1% arrived at least 30 minutes late and 0.5% 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
77.1%arrived on time
14.1%30+ min late
0.5%cancelled
7,758scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.8%all scheduled flights
120+ minutes late2.6%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+6.9 mincompleted flights

Which departure time was most reliable for DEN to SLC?

Among qualifying DEN-to-SLC departure window results, Early morning had the highest on-time rate: 89.7% of 1,616 flights. Night was lowest at 65.7% across 670 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,61689.7%5.9%0.2%
Late morning1,19380.6%10.2%0.5%
Afternoon2,29978.6%12.2%0.7%
Evening1,98066.8%22.1%0.3%
Night67065.7%23.9%0.9%

Which weekday was most reliable for DEN to SLC?

Among qualifying DEN-to-SLC weekday results, Tuesday had the highest on-time rate: 81.8% of 1,109 flights. Sunday was lowest at 73.9% across 1,095 flights.

DayFlightsOn time30+ minCancelled
Monday1,16775.4%15.5%0.3%
Tuesday1,10981.8%11.1%0.4%
Wednesday1,09978.0%13.6%0.5%
Thursday1,14976.2%14.3%0.4%
Friday1,15774.8%16.5%0.8%
Saturday98280.0%10.6%0.6%
Sunday1,09573.9%16.7%0.4%

Which airline was most reliable for DEN to SLC?

Among qualifying DEN-to-SLC airline results, Delta Air Lines had the highest on-time rate: 81.8% of 1,689 flights. Southwest Airlines was lowest at 70.8% across 2,329 flights.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines2,32970.8%17.9%0.5%
Delta Air Lines1,68981.8%11.1%0.4%
SkyWest Airlines1,39978.6%13.7%0.9%
United Airlines1,33177.3%13.1%0.2%
Frontier Airlines1,01081.3%12.3%0.5%

Which month was most reliable for DEN to SLC?

Among qualifying DEN-to-SLC month results, January 2026 had the highest on-time rate: 83.6% of 634 flights. July 2025 was lowest at 58.2% across 687 flights.

MonthFlightsOn time30+ minCancelled
July 202568758.2%27.4%1.5%
August 202566972.9%18.8%0.7%
September 202564482.1%9.6%0.0%
October 202566381.4%9.2%0.0%
November 202558882.1%8.5%1.9%
December 202562871.8%18.5%0.3%
January 202663483.6%7.7%0.0%
February 202661683.1%10.2%0.8%
March 202666880.1%13.9%0.4%
April 202663981.7%11.0%0.0%
May 202666581.1%14.6%0.0%
June 202665768.6%18.4%0.2%

What drove DEN to SLC delay minutes?

Late aircraft was the largest recorded DEN-to-SLC delay category, accounting for 45.5% of 105,416 BTS-attributed delay minutes during July 2025–June 2026.

Airline37.4%
Late aircraft45.5%
National airspace13.0%
Weather4.0%
Security0.1%
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.