Liège city is conveniently located in Belgium, and well connected by public transportation to the rest of the world !
Brussels Airport: regular trains from the airport building to Liège Guiilemin trainstation. One stop with train change either in Louvain or in Brussels North station.
Charleroi Brussels South Airport : Bus transfer operated by Flibco (www.flibco.com). Bus to Maastricht stops in Liège , 1h45 drive. Check timings on their website.
Maastricht Airport, Netherlands: Bus transfer by Flibco (www.flibco.com) . 40 minutes drive
Dusseldorf Airport: 1h30 minute drive by rent-a-car
Belgium has one of the densest train networks in Europe. Check SNCB website (www.belgiantrain.be). High speed trains are available from London (Eurostar, connecting in Brussels South Station to Liège) and Paris (Thalys, some trains continue directly to Liège Guillemin station)
Liège is on E25, E40 and E42 highways. Follow directions to the centre.