airasia if u depart woodlands at 7.30am and take cab to senai
and take airasia, u can reach around 12.30pm.
7.30am woodlands
8am johor bahru (depends on morning traffic)
8.45am reach senai airport for check-in
9.25am fly off
10.15am land at KLIA LCC-T
12.00pm KL Sentral
12.15pm take KTM Kommuter to Subang Jaya
12.45pm take shuttle bus in
quite far la, cos sunway is not in kl city itself, but at subang
jaya, west of it. 
SQ/MAS is very ex. cost u a bomb.
but once u complete the 45-minute journey, hop on to KLIA Ekspres
at the basement and u'll be at KL Sentral half an hour later.
if im not wrong, this sin-kul shuttle service no need to check-in
one. buy ticket and go.