Best and cheapest way to Southend airport tomorrow?

[emc]

Was thinking cab to Liverpool Street, Liverpool Street to Southend airport but the price of cab plus 2 train tickets might mean almost as cheap to get a cab the whole way there -any other alternative routes?

thankyou

[Loz]

Why not ED-London Bridge, LB-Moorgate and Moorgate-Liverpool St?

[Townleygreen]

E Dulwich to Lon Bridge, Jubilee Line to Stratford, Stratford to Southend Airport. Takes 1 hr 55 roughly.