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

San Francisco, CA (SFO) to Denver, CO (DEN) flight delay odds

74.8% of 5,410 official scheduled SFO-to-DEN flights arrived on time; 15.3% 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
74.8%arrived on time
15.3%30+ min late
0.5%cancelled
5,410scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.7%all scheduled flights
120+ minutes late2.7%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+7.7 mincompleted flights

Which departure time was most reliable for SFO to DEN?

Among qualifying SFO-to-DEN departure window results, Early morning had the highest on-time rate: 89.2% of 2,041 flights. Afternoon was lowest at 60.6% across 1,798 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning2,04189.2%4.9%0.6%
Late morning56364.1%21.5%0.7%
Afternoon1,79860.6%25.3%0.4%
Evening80378.6%14.1%0.2%
Night20571.7%20.5%0.0%

Which weekday was most reliable for SFO to DEN?

Among qualifying SFO-to-DEN weekday results, Saturday had the highest on-time rate: 79.4% of 719 flights. Thursday was lowest at 71.2% across 803 flights.

DayFlightsOn time30+ minCancelled
Monday80371.9%15.7%0.6%
Tuesday76178.3%13.5%0.9%
Wednesday74575.2%16.6%0.1%
Thursday80371.2%18.2%0.1%
Friday80671.3%17.2%0.5%
Saturday71979.4%12.8%0.6%
Sunday77377.2%12.9%0.4%

Which airline was most reliable for SFO to DEN?

Among qualifying SFO-to-DEN airline results, United Airlines had the highest on-time rate: 81.7% of 3,370 flights. Southwest Airlines was lowest at 59.7% across 1,436 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines3,37081.7%10.5%0.3%
Southwest Airlines1,43659.7%25.8%0.7%
Frontier Airlines60472.5%17.2%1.0%

Which month was most reliable for SFO to DEN?

Among qualifying SFO-to-DEN month results, January 2026 had the highest on-time rate: 87.1% of 435 flights. June 2026 was lowest at 63.4% across 494 flights.

MonthFlightsOn time30+ minCancelled
July 202546364.4%21.8%1.7%
August 202546070.4%16.1%0.2%
September 202545074.0%16.0%0.0%
October 202546081.1%9.6%0.0%
November 202543776.7%14.6%0.9%
December 202545673.9%16.2%0.4%
January 202643587.1%7.8%0.2%
February 202639882.4%12.8%0.3%
March 202644882.1%9.8%0.9%
April 202642674.2%14.3%0.7%
May 202648371.2%17.6%0.0%
June 202649463.4%25.5%0.2%

What drove SFO to DEN delay minutes?

Late aircraft was the largest recorded SFO-to-DEN delay category, accounting for 49.3% of 77,016 BTS-attributed delay minutes during July 2025–June 2026.

Airline25.9%
Late aircraft49.3%
National airspace24.1%
Weather0.6%
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.