Moderator: Asiana & Qantas Frequent Flyer
Join Date: Dec 2006
Location: STR/SYD/SMF
Programs: QF LTG / P1 , LH LT SEN / HON, OZ LT Diamond +, Marriott LT PT, HH Diamond,
Posts: 15,149
Welcome to FT, jozdemir!
Firstly let me start with some word about terminology. With "redemption" we usually mean the usage of miles for flights or similar. What you mean is "crediting" miles to a program.
Usually most programs have some period from where you can still hand in boarding passes even from before you signed up. Usually, this is limited to flights from that airline. But it definitely is worth a try. Also be aware that TK Miles & Smiles allows you to purchase status miles, AFAIK the only *A program where one can do this.