The decision follows research by the airline to discover how to attract and retain business passengers. Easyjet will also introduce reserved seating and the ability to change flight times without charge.
Fast-track security will be available at 27 airports, amounting to 54% of the airline’s business network. Over the coming months it will be rolled out to more airports across the airline's network.
Carolyn McCall, Easyjet’s chief executive, said: "Allocated seating is a good example of something our business passengers told us they really wanted and that we have been able to manage while maintaining our industry leading punctuality. By teaming up with our airport partners we can now offer fast track security which enables time sensitive business travellers to reduce their journey time through the airport."
The news comes as Easyjet reports decreased losses for the first half of 2013. Growth in business travel was reported from Amsterdam, Edinburgh and Belfast to London. Easyjet cut its pre-tax loss to £61m for the six months to April, down from £112m a year ago. The first half of the year is traditionally loss-making for airlines.