Question: is there a train station at southend airport

Answer: Yes, Southend Airport railway station is on the Shenfield to Southend Line in the East of England, serving London Southend Airport, the village of Sutton and northern parts of Southend-on-Sea. It is 39 miles 44 chains (63.6 km) down the line from London Liverpool Street and is situated between Rochford and Prittlewell. The station is managed by Stobart Rail (Stobart Aviation operates the airport) but the trains serving it are operated by Abellio Greater Anglia. Its three-letter station code is SIA.