From Airport Bus Station bus to Luton, train to King's Cross St. Pancras Underground Station, Tube to Holborn Underground Station, then Tube to Leyton Underground Station. 59min £17. From Airport Bus Station line 888 bus to Luton Airport Parkway station, bus to Marble Arch Underground Station, then Tube to Leyton Underground Station. 1hrs 30min £19. From Airport Bus Station line 757 bus to Marylebone, Baker Street, bus to Leyton, Drapers Field, then bus to Leyton Library (E10). 2hrs 11min £9. From London Luton taxi to Leyton. 1hrs 03min £119.