Best way to travel between Kuala Lumpur and Vientiane

A: Kuala Lumpur

B: Vientiane

Travel Modes: Price; Distance; Duration; CO2

train: $42.0; 2923.2 km; 42h 24mins; 154.93 kgs

bus: $92.0; 3100.65 km; 35h 42mins; 93.02 kgs

flight: $151.0; 1798.38 km; 5h 22mins; 194.23 kgs

drive: $440.0; 2716.11 km; 41h 45mins; 347.66 kgs

Tranport	Distance	Time(hrs)	Cost(local)	Cost(usd)
Train	2923.2 km	42h 24mins	335,390 LAK	42.0
Bus	3100.65 km	35h 42mins	734,664 LAK	92.0
Flight	1798.38 km	5h 22mins	1,205,807 LAK	151.0
Drive	2716.11 km	41h 45mins	3,513,611 LAK	440.0

Take Bus from Pudu Sentral to Butterworth: Time: 3h 51mins Cost: 79,855 LAK; $ 9.0 - 11.0 USD CO2 Emission: 10.78 kgs
Take Train from Butterworth to Nong Khai: Time: 36h 25mins Cost: 239,564 LAK; $ 27.0 - 33.0 USD CO2 Emission: 92.38 kgs
Take Bus from Nong Khai Province to Vientiane: Time: 34mins Cost: 15,971 LAK; $ 1.8 - 2.2 USD CO2 Emission: 24.64 kgs

Source: Rome2rio

Mode of travel comparision chart

The best and cheapest way to get from Kuala Lumpur and Vientiane is to travel by train, which will cost about 335,390 LAK or 37.80 USD.