| | | | | | | | |
| Subsidiary | | State or Jurisdiction of Incorporation |
| Bridgend Asset Management Limited | | United Kingdom |
| Coconut Creek Aviation Assets LLC | | Delaware |
| Facility Engine Acquisition LLC | | Delaware |
| WEST Engine Acquisition LLC | | Delaware |
| WEST Engine Funding LLC | | Delaware |
| WEST III Engines (Ireland) Limited | | Rep. of Ireland |
| WEST III France | | France |
| WEST IV Engines (Ireland) Limited | | Rep. of Ireland |
| WEST IV France | | France |
| WEST V Engines (Ireland) Limited | | Rep. of Ireland |
| WEST V France | | France |
| WEST VI Assets Corporation | | Delaware |
| WEST VI Engines (Ireland) Limited | | Rep. of Ireland |
| Willis Aeronautical Services, Inc. | | Delaware |
| Willis Asset Management Limited | | United Kingdom |
| Willis Aviation Finance LLC | | Delaware |
| Willis Aviation Services Limited | | United Kingdom |
| Willis Engine Structured Trust III | | Delaware |
| Willis Engine Structured Trust IV | | Delaware |
| Willis Engine Structured Trust V | | Delaware |
| Willis Engine Structured Trust VI | | Delaware |
| Willis Engine Structured Trust VII | | Delaware |
| Willis Global Engine Testing LLC | | Delaware |
| Willis Lease (Ireland) Limited | | Rep. of Ireland |
| Willis Lease Finance (Ireland) Limited | | Rep. of Ireland |
| Willis Lease Finance India IFSC Private Limited | | India |
| Willis Lease France | | France |
| Willis Lease Marine LLC | | Cayman Islands |
| Willis Lease Singapore Pte. Ltd. | | Singapore |
| Willis Sustainable Fuels (UK) Limited | | United Kingdom |
| Willis Warehouse Facility LLC | | Delaware |
| WLFC (Ireland) Limited | | Rep. of Ireland |
| WLFC Funding (Ireland) Limited | | Rep. of Ireland |