Today through Sunday August 30, Germanwings is selling off 500,000 tickets priced at just €19.99 apiece. This sale fare includes taxes. Not included: checked luggage surcharge & transaction fee. The latter runs €8 per payment.
These fares apply to Germanwings' entire route map, and are good for travel from September 6 through March 27, 2010.
The Germanwings route map is distinctive for a few reasons. The airline serves the former Yugoslavia more comprehensively than any other low-cost carrier. Also impressive are its routes to Turkish cities, Kiev, Moscow, and St. Petersburg.
English-language search engine here.