Best way to travel between Dublin, Ireland and Greece

A: Dublin, Ireland

B: Greece

Travel Modes: Price; Distance; Duration; CO2

flight: $237.0; 3339.0 km; 9h 23mins; 360.61 kgs

bus: $267.67; 3907.69 km; 73h 58mins; 117.23 kgs

train: $466.0; 3685.49 km; 86h 40mins; 195.33 kgs

drive: $705.51; 4582.86 km; 51h 12mins; 586.61 kgs

Tranport	Distance	Time(hrs)	Cost(local)	Cost(usd)
Flight	3339.0 km	9h 23mins	175 EUR	237.0
Bus	3907.69 km	73h 58mins	197 EUR	267.67
Train	3685.49 km	86h 40mins	343 EUR	466.0
Drive	4582.86 km	51h 12mins	520 EUR	705.51

Take Bus from Jury's Inn Custom House Quay to Dublin Airport: Time: 20mins Cost: 4 EUR; $ 5.4 - 6.6 USD CO2 Emission: 0.41 kgs
Take Flight from DUB to HER: Time: 6h 13mins Cost: 169 EUR; $ 207.0 - 253.0 USD CO2 Emission: 358.63 kgs
Take Bus from Irakleion to Heraklion: Time: 15mins Cost: 1 EUR; $ 0.9 - 1.1 USD CO2 Emission: 0.15 kgs

Source: Rome2rio

Mode of travel comparision chart

The best and cheapest way to get from Dublin, Ireland and Greece is to travel by air, which will cost about 175 EUR or 213.30 USD.