Vote now for the most influential airline leader of the past 25 years

So who is the most influential airline leader of the past 25 years? As part of the Airline Business 25th anniversary, we've taken over the Flightglobal weekly poll to find out what you think. The list of candidates is endelss, so we've come up with a shortlist of five possible candidates below (but if you think different, we'd love to hear from you about who should have been on the list and why);

• one-time Alitalia chief but best know for transforming airline industry body IATA into an agenda leading airline body, Giovanni Bisignani;
• larger than life entrepreneur and the man who brought Virgin Atlantic onto the transatlantic, Sir Richard Branson;
• the man who shaped and spent the first half of the last 25 years at the helm of American Airlines; Robert Crandall;
• the father of the low-cost airline industry, Southwest Airlines founder and former head; Herb Kelleher;
• love him or hate him, he's the man who transformed Ryanair into possibly the most commercially successful airline story of the last 25 years, Michael O'Leary

We've had more than 2,500 votes already, but there's still to have your say - the poll closes on 2 December. TO VOTE, CLICK HERE  and cast your say in the Poll section in the top right-hand page of the screen.

For all our special online content including interactive timelines, reflections on the last quarter century from 25 of the industry figures which helped shape the sector and a chance to read our launch issue and our latest 25th anniversary issue, VISIT OUR ANNIVERSARY HOME PAGE.