Etihad Airways has purchased a 29.1 percent stake in airberlin, becoming the single largest shareholder of the German airline and the airlines have announced the integration of their frequent flyer programs. Etihad Guest and airberlin topbonus frequent flyer program members will earn award and status miles on each other’s airlines and elite members will receive reciprocal status benefits. Etihad Guest Silver, Gold and Gold Elite members will enjoy status benefits such as the use of airberlin’s airport lounges, priority check-in, priority boarding and increased baggage allowances on all routes. Similar reciprocal benefits will be available to airberlin topbonus members travelling with Etihad Airways. The combined network offers 239 destinations.