Best way to travel between Changi Airport Singapore Singapore and Koh Samui

A: Changi Airport Singapore Singapore

B: Koh Samui

Travel Modes: Price; Distance; Duration; CO2

train: $25.2; 1365.98 km; 24h 6mins; 72.4 kgs

bus: $47.04; 1352.03 km; 26h 9mins; 40.56 kgs

drive: $154.0; 1243.91 km; 15h 53mins; 159.22 kgs

flight: $200.0; 1033.03 km; 3h 35mins; 111.57 kgs

Tranport	Distance	Time(hrs)	Cost(local)	Cost(usd)
Train	1365.98 km	24h 6mins	809 THB	25.2
Bus	1352.03 km	26h 9mins	1,510 THB	47.04
Drive	1243.91 km	15h 53mins	4,943 THB	154.0
Flight	1033.03 km	3h 35mins	6,419 THB	200.0

Take Drive from Changi Airport MRT Station to Johor Bahru Sentral: Time: 34mins Cost: 160 THB; $ 4.5 - 5.5 USD CO2 Emission: 5.03 kgs
Take Train from Johor Bahru Sentral to Gemas: Time: 4h 30mins Cost: 96 THB; $ 2.7 - 3.3 USD CO2 Emission: 10.31 kgs
Take Train from Gemas to Padang Besar: Time: 8h 5mins Cost: 514 THB; $ 14.4 - 17.6 USD CO2 Emission: 36.98 kgs
Take Train from Padang Besar to Hat Yai: Time: 55mins Cost: 160 THB; $ 4.5 - 5.5 USD CO2 Emission: 2.4 kgs
Take Train from Hat Yai to Surat Thani Train Station: Time: 4h 17mins Cost: 225 THB; $ 6.3 - 7.7 USD CO2 Emission: 15.61 kgs
Take Taxi from Surat Thani Train Station to Lomprayah Tapee River Surat Thani City: Time: 20mins Cost: 225 THB; $ 6.3 - 7.7 USD CO2 Emission: 2.68 kgs
Take Ferry from Lomprayah Tapee River Surat Thani City to Koh Samui Nathon Pier: Time: 1h 30mins Cost: 674 THB; $ 18.9 - 23.1 USD CO2 Emission: 9.41 kgs

Source: Rome2rio

Mode of travel comparision chart

The best and cheapest way to get from Changi Airport Singapore Singapore and Koh Samui is to travel by train, which will cost about 802 THB or 22.50 USD.