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

San Francisco, CA (SFO) to Aspen, CO (ASE) flight delay odds

64.8% of 378 official scheduled SFO-to-ASE flights arrived on time; 23.3% arrived at least 30 minutes late and 2.6% 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 SIGNALVariable
64.8%arrived on time
23.3%30+ min late
2.6%cancelled
378scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late14.3%all scheduled flights
120+ minutes late7.7%all scheduled flights
Diverted4.5%did not reach as scheduled
Average arrival+34.8 mincompleted flights

Which departure time was most reliable for SFO to ASE?

Among qualifying SFO-to-ASE departure window results, Evening had the highest on-time rate: 72.5% of 51 flights. Early morning was lowest at 57.7% across 52 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning5257.7%25.0%1.9%
Late morning9265.2%25.0%3.3%
Afternoon18364.5%26.2%1.1%
Evening5172.5%7.8%7.8%

Which weekday was most reliable for SFO to ASE?

Among qualifying SFO-to-ASE weekday results, Tuesday had the highest on-time rate: 80.9% of 47 flights. Friday was lowest at 51.9% across 54 flights.

DayFlightsOn time30+ minCancelled
Monday5162.7%23.5%2.0%
Tuesday4780.9%12.8%2.1%
Wednesday5178.4%13.7%2.0%
Thursday5457.4%25.9%0.0%
Friday5451.9%31.5%3.7%
Saturday6262.9%25.8%4.8%
Sunday5962.7%27.1%3.4%

Which airline was most reliable for SFO to ASE?

Only SkyWest Airlines met the SFO-to-ASE airline threshold: 64.8% of 378 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines37864.8%23.3%2.6%

Which month was most reliable for SFO to ASE?

Among qualifying SFO-to-ASE month results, September 2025 had the highest on-time rate: 87.5% of 24 flights. December 2025 was lowest at 41.4% across 29 flights.

MonthFlightsOn time30+ minCancelled
July 20253964.1%28.2%2.6%
August 20253770.3%29.7%0.0%
September 20252487.5%4.2%0.0%
December 20252941.4%51.7%0.0%
January 20266272.6%14.5%3.2%
February 20267255.6%25.0%5.6%
March 20266279.0%9.7%3.2%
June 20263046.7%36.7%0.0%

What drove SFO to ASE delay minutes?

Airline was the largest recorded SFO-to-ASE delay category, accounting for 40.2% of 15,368 BTS-attributed delay minutes during July 2025–June 2026.

Airline40.2%
Late aircraft23.8%
National airspace27.1%
Weather9.0%
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.