In some cases you would have to accept additional layover here in Europe on your way to Asia. (either in Vienna, Germany or Stockholm depends on your airport of departure).
If you are interested in these promotional flights with Air China please look for flights in travel period between 1st of November 2014 till 24th of March 2015. (inbound flights are not permited between 26th of February and 31st of March 2015. Booking till 31st of October 2014 or until sold out. Max. stay 3 months.
To check your connection possibilities we recommend to use service of Skyscanner. This tool gives you quickly an idea which airlines are available from your homecity. To check some affordable accomodation you may use service of booking servers such as Hotels.com or Hotelopia.
Booking samples
Thailand
Barcelona - Bangkok - Germany for €356
Paris - Bangkok - Germany for €417
Barcelona - Bangkok and Phuket - Germany for €437
South Korea
Barcelona - Seoul - Germany for €398
Barcelona - Seoul - London for Ł413
Japan
Barcelona - Japan (Tokyo) - Germany for €384
Hong Kong
Barcelona - Hong Kong - Germany for €356
Barcelona - Hong Kong - London for Ł367
Singapore
Barcelona - Singapore - Germany for €366
Stockholm - Singapore - Germany for €423
Vietnam
Barcelona - Ho Chi Minh City - Germany for €397
Australia
Paris - Sydney - Germany for €744
Flights have a layover in China (either Shanghai or Beijing). For additional €75 you may book stop-over in there are experience another culture during your trip to Asia. Take the advantage of free up to 72h visa that you can get upon arrival in China. Or, in some cases, you can also consider to visit Shanghai or Beijing during longer layover in China. Please refer to above booking samples to find out which routing suits you the most..
Booking sample of cheap flights to Asia with Air China. In this case you would be flying to Thailand. Your outbound flight from Barcelona to Bangkok would be on 1st of February and your return would be from Thailand back to Frankfurt on 14th of February 2015.