To get to Sutton, you can either drive or take the rail from various landmarks, cities, or towns. If you're coming from London, it's best to take the A3 road and then take the A240 towards Sutton. From Kingston-upon-Thames, you can take the A232 or the A237 and then turn towards Sutton.
If you prefer to take the rail, you can take the Southern Rail from London Victoria or London Bridge towards Sutton station. From Epsom, take the Southern Rail towards London Victoria and get off at Sutton station. If you're starting from Croydon, take the Southern Rail towards Epsom Downs and get off at Sutton station.
Overall, the best way to get to Sutton depends on where you're coming from and your mode of travel.
The closest airport to Sutton is London Gatwick Airport, which is approximately 13 miles away. To get to Sutton from the airport, you can take a taxi, which will cost around £35-£40, or you can take the train from the airport's railway station to Sutton railway station, which takes around 25 minutes and costs around £8-£10.