From Gatwick Airport train to Clapham Junction then train to Winchester. 1hrs 49min £33. From Gatwick Airport train to Guildford Railway Station, line 65 bus to Alton, Station, then line 64 bus to Winchester, Bus Station. 2hrs 38min £18. From South Terminal Bus Station bus to Heathrow Airport Terminal 5, Heathrow Terminal 5 then line 203 bus to Winchester, Broadway Guildhall. 3hrs 15min £34. From London Gatwick Airport (LGW) drive to Winchester. 1hrs 20min £15.