Foreign-registered private jet operators are using international routing workarounds to circumvent Caribbean airspace shutdown protocols, according to flight tracking data and regulatory coordination documents reviewed by Voyage Edge. The gap between Caribbean Air Space Operations (CASO) restrictions and extraterritorial enforcement has created a regulatory arbitrage window worth monitoring for operators with Caribbean-facing business models.

The pattern emerged across 14 documented instances between November 2024 and January 2025, where European and North American-registered aircraft filed alternate routing through international corridors when CASO protocols would have grounded Caribbean-based equivalents. The operators use existing bilateral aviation agreements between their flag states and individual Caribbean nations to secure overflight permissions that bypass regional coordination mechanisms. Flight tracking shows these aircraft entering Caribbean airspace through Bermuda and Turks and Caicos routing, where bilateral treaties predate CASO's 2019 establishment. The workaround adds 22 to 45 minutes to typical Miami-to-Antigua routing but avoids the compliance infrastructure Caribbean operators face.

This matters because it reveals structural enforcement asymmetry in Caribbean aviation governance. CASO shutdown protocols—designed to address hurricane season operations, customs coordination, and regional security—bind the 23 member-state operators but lack extraterritorial reach over foreign-flagged aircraft using legacy bilateral access rights. The arbitrage is cleanest for North American operators whose home states maintain pre-CASO aviation agreements with eastern Caribbean jurisdictions. European operators gain similar access through French overseas department routing via Guadeloupe and Martinique.

The competitive distortion affects Caribbean-based charter operators and FBOs directly. When CASO implements weather-related or customs-driven airspace restrictions, foreign operators with bilateral workarounds maintain service while regional competitors face grounding. The delta matters most during high-season December-through-March operations, when charter demand peaks and weather events trigger the protocols CASO was built to coordinate. One Antigua-based operator reported losing $340,000 in December charter revenue to competitors using Bermuda routing during a three-day CASO customs coordination shutdown.

Operators and allocators should watch three developments. First, CASO member states are reviewing bilateral aviation treaties signed before 2019 to identify amendment language that would bring legacy agreements under regional coordination mechanisms—preliminary legal reviews expected by March 2025. Second, the U.S. Federal Aviation Administration is receiving informal inquiries from CASO about reciprocal enforcement frameworks, though no formal negotiation has begun. Third, Caribbean-based aircraft management companies are establishing Bermuda and Caicos subsidiaries to access the same bilateral routing their foreign competitors use, a structural shift with insurance and liability implications.

The European operators using French overseas routing represent the cleanest long-term workaround, since those flights operate under EU aviation law within French airspace that happens to sit in the Caribbean basin. That structure is harder to close through regional coordination alone.