The first thing that Leith Khdeir Abbas, a 27-year-old Iraqi asylum seeker who arrived in Germany four months ago, plans to do after he makes the return journey on Wednesday is to kneel down and kiss the soil that he calls home.

"I fled to Germany to build my future. But I realized I can't build it on fake promises," he said at Berlin's Tegel airport where he and some 50 similarly disenchanted young Iraqi men were about to board an Iraqi Airways plane to Irbil in northern Iraq.

A growing number of Iraqi refugees in Germany are choosing to return to their war-torn country, frustrated with a slow asylum process in a country overwhelmed by the influx of 1.1 million asylum seekers last year, most still living in shelters.