Best way to travel between Seoul, South Korea and Osaka, Osaka Prefecture, Japan

A: Seoul, South Korea

B: Osaka, Osaka Prefecture, Japan

Travel Modes: Price; Distance; Duration; CO2

bus: $202.0; 1132.2 km; 28h 44mins; 33.97 kgs

train: $244.0; 1198.5 km; 11h 24mins; 63.52 kgs

drive: $255.0; 1252.48 km; 14h 8mins; 160.32 kgs

flight: $327.0; 1193.82 km; 6h 15mins; 128.93 kgs

Tranport	Distance	Time(hrs)	Cost(local)	Cost(usd)
Bus	1132.2 km	28h 44mins	20,521 JPY	202.0
Train	1198.5 km	11h 24mins	24,788 JPY	244.0
Drive	1252.48 km	14h 8mins	25,905 JPY	255.0
Flight	1193.82 km	6h 15mins	33,220 JPY	327.0

Take Train from Euljiro 4-ga Station to Terminal Express Bus Station: Time: 16mins Cost: 102 JPY; $ 0.9 - 1.1 USD CO2 Emission: 0.46 kgs
Take Bus from Seoul Express Bus Terminal to Donghae Bus Terminal: Time: 3h 9mins Cost: 2,133 JPY; $ 18.9 - 23.1 USD CO2 Emission: 8.03 kgs
Take Ferry from Donghae City to Sakaiminato: Time: 15h 18mins Cost: 13,207 JPY; $ 117.0 - 143.0 USD CO2 Emission: 58.93 kgs
Take Car from Sakaiminato to Takamatsu: Time: 2h 33mins Cost: 2,946 JPY; $ 26.1 - 31.9 USD CO2 Emission: 29.21 kgs
Take Ferry from Takamatsu to Kobe: Time: 4h 35mins Cost: 1,625 JPY; $ 14.4 - 17.6 USD CO2 Emission: 17.46 kgs
Take Train from Sannomiya(Jr) to Osaka: Time: 20mins Cost: 508 JPY; $ 4.5 - 5.5 USD CO2 Emission: 1.65 kgs

Source: Rome2rio

Mode of travel comparision chart

The best and cheapest way to get from Seoul, South Korea and Osaka, Osaka Prefecture, Japan is to travel by bus, which will cost about 20,521 JPY or 181.80 USD.