KLM to Improve Business Class by Not Selling Middle Seat CheapOair Staff February 25, 2011 general KLM to No Longer Sell the Middle Seat Dutch airline KLM will no longer be selling the middle seat on its flights beginning on March 27th. The airline will also be serving better food and drinks according to the Wall Street Journal. Aside from that they will be offering the passengers priority at arrivals and departures. Business travelers will also reap the benefits of extra baggage allowance and admittance to airport lounges. The business class flights will also have sockets to charge mobile devices such as laptops and phones.