Rochford council gave the green light to plans yesterday for a 90-metre extension to the terminal which became operational in February.
The number of check in desks / baggage drop off points will increase, as will the amount of security screening channels.
The Departure Lounge will grow in size and a larger arrivals area will have enhanced baggage reclaim facilities and a larger immigration area.
Retail and catering facilities will be expanded throughout the terminal in order to provide a much wider range of shops and services available to passengers.
London Southend Airport Managing Director Alastair Welch said: “We are very pleased that Rochford Council has indicated they support this extension, which will ensure that we are able to maintain the high levels of customer service we intend to be the hallmark of London Southend Airport as our passenger numbers grow. “