I want to book MUC-ATL with NW. Base prise is EUR 199 plus taxes. All of the European travel sites I searched list total price at around €320-€370. I tried searching their american counterparts and there prices where much lower, around €280 (NWA.com & Expedia) which is a bargain. However, all the USD sites require me to have an american credit card, which I have not.

Does anyone know why prices are so much lower on the american sites (apart from lower booking fee) and more importanly; does anyone know a way around this? Like an american TA accepting foreign cards perhaps? Or will an european card work at asian sites (like NWA japan site)?

This has surely been discussed but I didn't manage to find it on the google-search. Thank you all for any help!