While there is no "all planes" code, entering specific sequences in the or Extras menu can unlock unique aircraft: A-12 Avenger II : Hold Shift and press X, A, X, D, Q, X . F-18 HARV : Hold Shift and press A, Q, A, Q, A, X . F-22B Strike Raptor : Hold Shift and press D, X, D, X, D, Q . Tom Clancy's HAWX Cheats - PC Cheats Guide - IGN

To unlock all aircraft in on PC without manual grinding, you can use a 100% completion save file or manually edit game configuration files. 📂 Using a 100% Completion Save File

This method involves replacing your profile save file with one that has everything unlocked. What it unlocks:

Navigate to your save folder (see paths below) and copy savegame.sav to your desktop as a backup. This ensures you can revert if needed.