Best way to travel between Seoul, South Korea and Xian

A: Seoul, South Korea

B: Xian

Travel Modes: Price; Distance; Duration; CO2

train: $217.0; 2136.9 km; 40h 31mins; 113.26 kgs

bus: $262.0; 1913.95 km; 41h 51mins; 57.42 kgs

drive: $301.13; 1913.95 km; 37h 40mins; 244.99 kgs

flight: $420.0; 1764.88 km; 11h 44mins; 190.61 kgs

Tranport	Distance	Time(hrs)	Cost(local)	Cost(usd)
Train	2136.9 km	40h 31mins	1,324 CNY	217.0
Bus	1913.95 km	41h 51mins	1,598 CNY	262.0
Drive	1913.95 km	37h 40mins	1,837 CNY	301.13
Flight	1764.88 km	11h 44mins	2,562 CNY	420.0

Take Train from Jongno 3-ga Station to Incheon Station: Time: 1h 19mins Cost: 12 CNY; $ 1.8 - 2.2 USD CO2 Emission: 2.17 kgs
Take Ferry from Incheon to Qingdao: Time: 18h 22mins Cost: 854 CNY; $ 126.0 - 154.0 USD CO2 Emission: 77.38 kgs
Take Train from Qingdao to Xiu0027an: Time: 18h 48mins Cost: 458 CNY; $ 67.5 - 82.5 USD CO2 Emission: 79.1 kgs

Source: Rome2rio

Mode of travel comparision chart

The best and cheapest way to get from Seoul, South Korea and Xian is to travel by train, which will cost about 1,324 CNY or 195.30 USD.