Best way to travel between Nepal and Thailand

A: Nepal

B: Thailand

Travel Modes: Price; Distance; Duration; CO2

flight: $213.0; 2338.1 km; 4h 0mins; 252.51 kgs

train: $268.0; 7600.02 km; 107h 51mins; 402.8 kgs

flight: $352.0; 1803.9 km; 6h 47mins; 194.82 kgs

drive: $360.0; 3325.93 km; 46h 43mins; 425.72 kgs

train: $512.0; 9738.65 km; 104h 14mins; 516.15 kgs

Tranport	Distance	Time(hrs)	Cost(local)	Cost(usd)
Flight	2338.1 km	4h 0mins	6,836 THB	213.0
Train	7600.02 km	107h 51mins	8,601 THB	268.0
Flight	1803.9 km	6h 47mins	11,297 THB	352.0
Drive	3325.93 km	46h 43mins	11,554 THB	360.0
Train	9738.65 km	104h 14mins	16,433 THB	512.0

Take Car from Kathmandu to Kathmandu: Time: 7mins Cost: 32 THB; $ 0.9 - 1.1 USD CO2 Emission: 0.79 kgs
Take Flight from KTM to BKK: Time: 3h 26mins Cost: 6,419 THB; $ 180.0 - 220.0 USD CO2 Emission: 247.96 kgs
Take Car from Bangkok to Samut Prakan: Time: 27mins Cost: 385 THB; $ 10.8 - 13.2 USD CO2 Emission: 4.62 kgs

Source: Rome2rio

Mode of travel comparision chart

The best and cheapest way to get from Nepal and Thailand is to travel by air, which will cost about 6,836 THB or 191.70 USD.