How reliable is Aspen-Pitkin Co/Sardy Field?
Flights from ASE departed within 15 minutes of schedule in 70% of 43,120 flights in official BTS history — and weather is calmest in Sep. Here’s the full picture before you book.
Reliability score
on-time, cancellations & delays
Weather favorability
year-round climate
Origin-airport operations
What the departure punctuality at ASE looks like
On-time departures
across 43,120 flights
Source: BTS Airport Operations · data through 2026-06-25. Role-specific BTS departure history; advisory context, not a guarantee for any flight.
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Weather by month
When the weather works for you at Aspen
A calm-weather score (0–100) for each month from decades of airport observations — how often conditions disrupt flying, not temperature. Higher is calmer.
Calmest month
Calmest flying weather of the year · 98/100 favorability
Roughest month
Most disruptive — snow, low visibility & fog · 78/100 favorability
The read on ASE
What the numbers say about flying through Aspen-Pitkin Co/Sardy Field
Across official performance history, flights from Aspen left within 15 minutes of schedule about 70% of the time over 43,120 flights. That's a middling record — neither a strength nor a red flag on its own. Pair it with an elevated cancellation rate of 7.3% — worth weighing alongside the on-time figure. When a departure does run late, the typical delay is around 27 minutes.
On weather, Aspen is an unusually calm-weather airport year-round. September is the calmest stretch for flying, scoring 98 out of 100 for favorable conditions, while February is the most disruptive at 78, driven mainly by snow and low visibility & fog. The seasonal swing is real but manageable; favor the calmer months when your dates are flexible.
None of this guarantees your specific flight — it’s the backdrop. To turn it into a booking, score real flights to Aspen, read how we weigh it all in how the PlaneSane Score works, and brush up with how to pick a reliable flight and avoiding weather delays.
Common questions about ASE
- How reliable is Aspen-Pitkin Co/Sardy Field (ASE)?
- Flights from Aspen left within 15 minutes of schedule roughly 70% of the time across 43,120 flights of official history — a middling record — neither a strength nor a red flag on its own. The cancellation rate runs about 7.3%. It's advisory context, not a guarantee for any single flight.
- What is the best month to fly from ASE for good weather?
- September has the calmest flying weather at Aspen-Pitkin Co/Sardy Field. February is the most disruptive, mainly from snow and low visibility & fog.
Planning a trip through Aspen?
Score real flights to and from ASE on reliability, weather, and connection safety — not just price.