Best way to travel between Dublin, Ireland and Cardiff, United Kingdom

A: Dublin, Ireland

B: Cardiff, United Kingdom

Travel Modes: Price; Distance; Duration; CO2

drive: $98.0; 421.26 km; 8h 2mins; 53.92 kgs

bus: $165.0; 509.6 km; 10h 21mins; 15.29 kgs

flight: $190.0; 547.05 km; 6h 4mins; 59.08 kgs

train: $221.0; 509.25 km; 9h 33mins; 26.99 kgs

Tranport	Distance	Time(hrs)	Cost(local)	Cost(usd)
Drive	421.26 km	8h 2mins	60 GBP	98.0
Bus	509.6 km	10h 21mins	102 GBP	165.0
Flight	547.05 km	6h 4mins	117 GBP	190.0
Train	509.25 km	9h 33mins	136 GBP	221.0

Take Ferry from Dublin to Holyhead: Time: 3h 29mins Cost: 25 GBP; $ 36.0 - 44.0 USD CO2 Emission: 14.18 kgs
Take Car from Holyhead to Cardiff: Time: 4h 33mins Cost: 37 GBP; $ 54.0 - 66.0 USD CO2 Emission: 39.8 kgs

Source: Rome2rio

Mode of travel comparision chart

The best and cheapest way to get from Dublin, Ireland and Cardiff, United Kingdom is to travel by car/taxi, which will cost about 60 GBP or 88.20 USD.