Go to Expedia.de (Expedia Germany)
2. select click and mix (flight and hotel)
3. Specify Destination Dates.
4. On the final page where the coupon box is indicated apply coupon COUPONFEB11DE
This coupon has no minimum purchase requirements so essentially can be used for any flight.
Also you can use any credit card to puchase. (doesn't need to be a german credit card)
If you have trouble navigating the site use google translate.
Sample flights
LAX-LAS $0.25 EUR!!! (INCLUDES FLIGHT AND HOTEL!) US AIR Sample dates MARCH 13-14, 22-23 27-28 ETC. Essentially FREE!!!
PIT-LAS $75 EUR Sample Dates MARCH 28-30, 29-30 etc.