✈️ Denver Alternate Airport Traffic Plunges 41% During Aspen Closure, Seasonal Factors Not to Be Overlooked
Avi-Go data shows that in the 9 days following the closure of Aspen/Pitkin County Airport (KASE) on April 23, 2026 (April 23 through May 1), the two primary Denver-area alternate airports — Centennial Airport (KAPA) and Rocky Mountain Metropolitan Airport (KBJC) — recorded a combined total of only 941 operations, averaging 104.6 movements per day. This represents a year-over-year decline of 41.4% compared to 1,606 operations during the same period in 2025, and a month-over-month drop of 31.9% versus the daily average of 153.7 operations recorded from April 1 through April 22, 2026. As reported by AIN on April 13, 2026, KASE's approximately one-month closure for runway maintenance is a routine off-season practice for the airport. Eagle County Regional Airport (KEGE), with its 9,000-foot runway and record-breaking 2026 passenger volume, is considered the primary diversion alternative. Notably, late April through early May falls within the traditional shoulder season following the close of Aspen's ski season, meaning diversion demand during the KASE closure window is inherently limited. With a current data window of only approximately 9 days, the suppressive effect of seasonal factors on Denver-area traffic should not be underestimated, and this decline should not be interpreted as a broad weakening of regional business aviation demand.
Impact: The actual diversion traffic absorbed by Denver-area FBOs during this window fell well short of theoretical expectations, resulting in limited near-term pressure on scheduling and ground handling resources. However, if KEGE is incorporated into the analytical framework, the regional traffic distribution may reflect more complex structural shifts. Operators should avoid drawing overly pessimistic market conclusions based solely on KAPA and KBJC data.
Recommendation: Operators and FBOs should pull combined data for KAPA, KBJC, and KEGE immediately following KASE's anticipated reopening (approximately late May 2026), and conduct a seasonally adjusted comparison against the same period in 2025. This will enable a more accurate assessment of the closure's actual impact on regional traffic distribution and inform capacity planning adjustments for summer 2026.