Hamburg becomes 7th German destination. Additional flights from Madrid to Berlin, Dusseldorf and Frankfurt. MADRID, 2015-3-20 — /Travel PR News/ — As of 29 March, Iberia Group airlines will strengthen flight operations to Germany, adding Hamburg to the existing six German destinations with four flights per week, while also increasing frequencies from Madrid to Berlin, Dusseldorf and Frankfurt. Iberia Express will operate Madrid-Berlin 14… Read the full press release