Virgin seals codeshare, frequent flyer deal with German airline airberlin VIRGIN Australia will enter into a reciprocal codeshare and frequent flyer deal with Germany's second biggest carrier, airberlin, from the beginning of August. Virgin Australia will codeshare on airberlin's daily direct services from Abu Dhabi to Dusseldorf and Berlin while airberlin will do the same on Virgin Australia's Abu Dhabi to Sydney service, its Phuket to Perth service and on nine of its domestic services.