Josh Duhamel and 4-year-old Son Axl Talk Christmas Presents

Josh Duhamel's still thinking turkey but his son's got his eye on the prize ... Christmas!!!

We got Josh and 4-year-old son Axl at LAX Sunday night where our photog greeted them with a good ol' "Merry Christmas." That puzzled Josh who still had Thanksgiving in mind after the long weekend.

That's too bad ... because Axl's laser-focused on his 2017 presents, and from the sound of it he's got a loooooooong list for Santa, who btw is TOTALLY real. Just ask Josh.

Super btw ... good to see Josh in great spirits. He and Fergie split back in September.