The Hornet Leader game I mentioned in my first reply is somewhat abstracted compared to a computer flight sim, but makes up for it with decisions like which type of plane to choose (you have the choice between F-14, F-18, A-6, A-7, Prowlers, E-2C's to name a few) then which pilot to choose to fly it. Add to that which ordinance to pick to complete the mission and it gets fun (in my opinion).
Any board game will have to sacrifice some aspect of accuracy for gameplay. Advanced Squad Leader (ASL) probably tries to make things the closest, but then you end up with a rulebook that comes in a rather large binder! And anyway, you end up with a modified I go - You go sequence of play no matter what they come up with. That was why Combat Mission was SO great -- you had the time to plan moves, but then once the "go" button was pressed, had to sit back and see if you did it right! That is something you can't get with a board game. Still, I find myself "pushing the cardboard" more these days than playing on the computer...