Originally Posted by
70Jaguar
NWA's US website will sell tickets only if the purchaser (not necessarily the passenger) has a US address.
Actually, all that matters for using the US site is that you use a credit card with a US billing address, same goes for using the Asia based sites to buy, you must use a C/C with an Asia billing address. I am based in Asia and my WP account has an Asia address, but I use both the Singapore and US websites depending on which has a better deal and better availability (and as I've noted on several threads there are some differences).