From Heathrow Terminal 1 train to Lancaster Gate Underground Station, Tube to London Liverpool St, train to Ipswich, then train to Felixstowe. 2hrs 29min £42. From Heathrow Terminals 1-2-3 Underground Station Tube to Gloucester Road Underground Station, Tube to Embankment, line 481 bus to Old Cattle Market Bus Station, then bus to Felixstowe, NatWest Bank. 4hrs 26min £22. From London Heathrow drive to Felixstowe. 1hrs 58min £24.