From London Gatwick airport fly to Cardiff airport then bus to Cardiff. 3hrs 47min $267. From London Gatwick airport fly to Bristol airport, bus to Bristol Temple Meads, then train to Cardiff. 4hrs 50min $295. From Gatwick Airport train to Reading then train to Cardiff Central. 3hrs 02min $119. From South Terminal Bus Station bus to Heathrow Central Bus Station then line 202 bus to Cardiff, Sophia Gardens. 5hrs 45min $30. From London Gatwick Airport (LGW) drive to Cardiff. 2hrs 48min $52.