Longest Active Airspace Closures
Airspace closure duration varies enormously depending on the cause. Conflict-driven closures can persist for years with no clear end date, while volcanic ash events typically resolve in days and security incidents in hours. Understanding these patterns helps operators plan for disruption.
Average Duration by Closure Type
Notable Closures by Duration
| Airspace | Type | Start | Duration |
|---|---|---|---|
| Ukraine (full FIR) | Conflict | Feb 2022 | 4+ years (ongoing) |
| Libya (partial) | Conflict | 2014 | 12+ years (varying) |
| Syria (western) | Conflict | 2012 | 14+ years (ongoing) |
| Pakistan (full) | Political/conflict | May 2025 | Variable |
| Eyjafjallajokull zone | Volcanic | Apr 2010 | 6 days (main) |
| Gulf FIRs (12) | Conflict escalation | Feb 2026 | 48 hours |
| Gatwick Airport | Drone | Dec 2018 | 36 hours |
Context
The most significant trend in airspace closures is the shift toward long-duration conflict-driven restrictions. Before 2014, most airspace closures were temporary events lasting hours to days. The Libyan civil conflict, Syrian civil conflict, and especially the February 2022 closure of Ukrainian airspace have created a new category of semi-permanent closures that reshape global air routes for years.
As of April 2026, approximately 8% of global airspace is under some form of restriction or closure due to conflict, compared to under 2% in 2019. This represents a fourfold increase in restricted airspace, forcing airlines to develop longer-term rerouting strategies rather than short-term diversions.
Short-duration closures (drone incursions, security events) remain the most frequent type but have minimal lasting impact. The economic cost correlates strongly with duration: a 4-year conflict closure costs orders of magnitude more than a 4-hour drone event.
Sources
- ICAO — Airspace closure notifications database, 2010-2026
- Eurocontrol — Network Operations Report, closure impact analysis
- EASA — Conflict Zone Information Bulletin archive
- FAA — SFAR and NOTAM prohibition records
Cite this data:
This page provides publicly available information about airspace conditions. Always consult official sources (ICAO, EASA, FAA) for operational decisions.