Cheat mode
Start a new game. At the "Game Select" screen, hold L and press X + Y to unlock all missions and airplanes. If you entered the code correctly, you will hear a sound.

Free flight missions 20 and 21
Successfully complete all fighter missions and tactical challenges.

F-18 Aggressor fighter
Successfully land more than nine carriers in either carrier free flight mission.

F-15DJ Aggressor 2 fighter
Get over 50 kills in the game.

T-3 fighter
Get over 100 kills in the game.

Bonus airplanes
Successfully complete the indicated mission to unlock the corresponding aircraft: