Originally Posted by
xinmpg
You can use Jet Quay private terminal at Changi. The mailer lists the following airports in Asia for immigration fast-track:
Bali, Bangkok, Delhi, HCMC, Jakarta, KL, Seoul, "and more". (Their words, not mine)
Not sure why HKG is not on the list!
Also, you cannot use JetQuay services if you are flying out on any UA/DL metal flights. Budget flights are excluded as well but hopefully this might change once they are moved from BT to T2.