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

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

61.1% of 375 official scheduled ASE-to-SFO flights arrived on time; 26.4% arrived at least 30 minutes late and 6.1% 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 SIGNALHigher disruption
61.1%arrived on time
26.4%30+ min late
6.1%cancelled
375scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late18.1%all scheduled flights
120+ minutes late8.0%all scheduled flights
Diverted0.5%did not reach as scheduled
Average arrival+22.8 mincompleted flights

Which departure time was most reliable for ASE to SFO?

Among qualifying ASE-to-SFO departure window results, Early morning had the highest on-time rate: 74.4% of 86 flights. Evening was lowest at 53.9% across 76 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning8674.4%18.6%1.2%
Late morning9654.2%34.4%3.1%
Afternoon11761.5%23.1%9.4%
Evening7653.9%30.3%10.5%

Which weekday was most reliable for ASE to SFO?

Among qualifying ASE-to-SFO weekday results, Tuesday had the highest on-time rate: 76.6% of 47 flights. Friday was lowest at 51.9% across 54 flights.

DayFlightsOn time30+ minCancelled
Monday5156.9%31.4%5.9%
Tuesday4776.6%17.0%4.3%
Wednesday5074.0%16.0%6.0%
Thursday5259.6%30.8%1.9%
Friday5451.9%29.6%13.0%
Saturday6259.7%29.0%8.1%
Sunday5952.5%28.8%3.4%

Which airline was most reliable for ASE to SFO?

Only SkyWest Airlines met the ASE-to-SFO airline threshold: 61.1% of 375 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines37561.1%26.4%6.1%

Which month was most reliable for ASE to SFO?

Among qualifying ASE-to-SFO month results, September 2025 had the highest on-time rate: 91.7% of 24 flights. June 2026 was lowest at 20.0% across 30 flights.

MonthFlightsOn time30+ minCancelled
July 20253959.0%28.2%5.1%
August 20253775.7%18.9%0.0%
September 20252491.7%4.2%0.0%
December 20252846.4%50.0%3.6%
January 20266271.0%16.1%9.7%
February 20267251.4%31.9%11.1%
March 20266175.4%14.8%6.6%
June 20263020.0%60.0%0.0%

What drove ASE to SFO delay minutes?

National airspace was the largest recorded ASE-to-SFO delay category, accounting for 41.1% of 11,878 BTS-attributed delay minutes during July 2025–June 2026.

Airline23.4%
Late aircraft27.2%
National airspace41.1%
Weather8.3%
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.