Dublin-based ACMI/charter specialist Fly4 Airlines (4F, Dublin International) has successfully petitioned the Irish High Court to be placed into provisional liquidation, according to Irish news provider The Currency.

Interpath restructuring specialists Brendan O’Reilly and Mark Degnan have been proposed as liquidators.

Fly4, which operates four B737-800s with one more to be delivered, provides short-notice capacity to airlines, brokers, and tour operators, including cover for technical groundings and unexpected demand. According to ch-aviation, it dry leases three of the B737-800s and owns one.

ADS-B data shows that all four B737-800s were grounded between October 28 and November 6, 2026. Two are parked at Istanbul Atatürk, one at Nuremberg, and the fourth at Brussels National.

The company was established in 2023, launched flight operations in March 2024, and is headquartered at Dublin International. It is owned 51% by Polish charter carrier Enter Air and 49% by Germany's TUI Group. The venture was created to supply flexible capacity, particularly to TUI and other carriers during peak periods.

The report does not publicly detail the grounds for the petition, the creditors involved, or the status of Fly4’s leased aircraft.

As reported by ch-aviation, the carrier was supplying wet leased B737-800 capacity to Enter Air in 2024 and Germany’s SundAir during October 2026.

ch-aviation has contacted Fly4 Airlines and Enter Air for comment.