Best way to travel between Porto and Luxembourg

A: Porto

B: Luxembourg

Travel Modes: Price; Distance; Duration; CO2

flight: $264.0; 1579.2 km; 5h 19mins; 170.55 kgs

bus: $265.0; 2148.27 km; 30h 54mins; 64.45 kgs

train: $306.0; 2213.47 km; 26h 22mins; 117.31 kgs

drive: $380.0; 1965.54 km; 20h 10mins; 251.59 kgs

Tranport	Distance	Time(hrs)	Cost(local)	Cost(usd)
Flight	1579.2 km	5h 19mins	194 EUR	264.0
Bus	2148.27 km	30h 54mins	195 EUR	265.0
Train	2213.47 km	26h 22mins	225 EUR	306.0
Drive	1965.54 km	20h 10mins	280 EUR	380.0

Take Train from Trindade to Aeroporto: Time: 28mins Cost: 1 EUR; $ 1.8 - 2.2 USD CO2 Emission: 0.67 kgs
Take Flight from OPO to LUX: Time: 2h 22mins Cost: 191 EUR; $ 234.0 - 286.0 USD CO2 Emission: 168.46 kgs
Take Bus from Luxembourg – Findel Airport to Um Bock: Time: 16mins Cost: 1 EUR; $ 1.8 - 2.2 USD CO2 Emission: 0.21 kgs

Source: Rome2rio

Mode of travel comparision chart

The best and cheapest way to get from Porto and Luxembourg is to travel by air, which will cost about 194 EUR or 237.60 USD.