Best way to travel between Lisbon and Dublin, Ireland

A: Lisbon

B: Dublin, Ireland

Travel Modes: Price; Distance; Duration; CO2

flight: $151.0; 1734.72 km; 5h 42mins; 187.35 kgs

bus: $343.31; 3294.6 km; 54h 53mins; 98.84 kgs

train: $384.0; 3071.25 km; 71h 32mins; 162.78 kgs

drive: $484.0; 2651.25 km; 37h 17mins; 339.36 kgs

Tranport	Distance	Time(hrs)	Cost(local)	Cost(usd)
Flight	1734.72 km	5h 42mins	111 EUR	151.0
Bus	3294.6 km	54h 53mins	253 EUR	343.31
Train	3071.25 km	71h 32mins	283 EUR	384.0
Drive	2651.25 km	37h 17mins	356 EUR	484.0

Take Train from Rossio to Alameda: Time: 7mins Cost: 1 EUR; $ 1.8 - 2.2 USD CO2 Emission: 0.15 kgs
Take Train from Alameda to Lisbon airport: Time: 19mins Cost: 1 EUR; $ 1.8 - 2.2 USD CO2 Emission: 0.45 kgs
Take Flight from LIS to DUB: Time: 2h 46mins Cost: 103 EUR; $ 126.0 - 154.0 USD CO2 Emission: 184.71 kgs
Take Bus from Dublin Airport to Convention Centre: Time: 10mins Cost: 5 EUR; $ 6.3 - 7.7 USD CO2 Emission: 0.4 kgs

Source: Rome2rio

Mode of travel comparision chart

The best and cheapest way to get from Lisbon and Dublin, Ireland is to travel by air, which will cost about 111 EUR or 135.90 USD.