If u're buying from Nepal, I want you to try Rainbow Travels, they've always have the best deal...It's owned by my fren and when flying from ktm to lon I actually saved almost 10000 rs otherwise i would have almost been robbed if i hadn't met him...well u can can email him at hemant_ranjit@hotmail.com. he mite help you. Trust me try all the travel agencies first and go to them u'll will be suprise gettting cheaper price but depends on how tight the seats are tho...hope this helps.