Best way to travel between Seoul, South Korea and Dalian, Liaoning, China

A: Seoul, South Korea

B: Dalian, Liaoning, China

Travel Modes: Price; Distance; Duration; CO2

ferry: $225.75; 564.41 km; 18h 31mins; 72.24 kgs

flight: $616.08; 532.1 km; 5h 35mins; 57.47 kgs

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Tranport	Distance	Time(hrs)	Cost(local)	Cost(usd)
Ferry	564.41 km	18h 31mins	1,377 CNY	225.75
Flight	532.1 km	5h 35mins	3,758 CNY	616.08

Take Train from City Hall Station to Incheon Station: Time: 1h 23mins Cost: 12 CNY; $ 1.8 - 2.2 USD CO2 Emission: 2.74 kgs
Take Taxi from Incheon Station to Incheon Int'l Port: Time: 8mins Cost: 67 CNY; $ 9.9 - 12.1 USD CO2 Emission: 0.95 kgs
Take Ferry from Incheon Int'l Port to Dalian Port: Time: 16h 0mins Cost: 1,299 CNY; $ 191.7 - 234.3 USD CO2 Emission: 64.68 kgs

Source: Rome2rio

Mode of travel comparision chart

The best and cheapest way to get from Seoul, South Korea and Dalian, Liaoning, China is to travel by ferry, which will cost about 1,379 CNY or 203.40 USD.