London Southend Airport (IATA: SEN, ICAO: EGMC) is an international airport in the district of Rochford within Essex, England.

During the 1960s, Southend was the third-busiest airport in the United Kingdom. It remained London’s third-busiest airport in terms of passengers handled until the end of the 1970s, when the role of “London’s third airport” passed to Stansted. Following its purchase by Stobart Group in 2008, there has been an ongoing programme of development, with a newly built terminal and control tower, an extended runway, and a regular rail service running from Southend Airport Station to Liverpool Street Station in central London. EasyJet began operating services by opening a base at Southend in April 2012. Irish carrier Aer Lingus Regional began regular flights to Dublin in May.

As a result, the airport has seen a rapid increase in passenger numbers. Around 617,000 passengers used the airport during 2012; with 721,661 passengers in the 12 months following the commencement of these services. Passenger numbers grew to around 970,000 in 2013. The airport operator hopes to increase passenger numbers to two million per year by 2020.