From Heathrow Terminals 1-3 train to Lancaster Gate Underground Station, Tube to London Liverpool Street, train to Ipswich, then train to Felixstowe. 3hrs 09min £47. From Heathrow Airport London bus to Ipswich, Station Hotel then bus to Felixstowe, NatWest Bank. 4hrs 23min £74. From London Heathrow Airport (LHR) drive to Felixstowe. 1hrs 58min £28.