The cheapest way to the airport. Nothing listed is quicker.
Bus 29 to the Gare centrale
29 · AVL (Autobus de la Ville de Luxembourg), on the national free farePickup, hours & luggage
Boards at. The Gare centrale, quay 1
Free, on the same regulation as the tram and the 16: article 5 of the règlement ministériel of 18 December 2025. The airport's FAQ: "Since March 2020, public transport in Luxembourg is free of charge."
Luggage. Carried free by regulation; an ordinary city bus with space by the doors and no racks.
Hours. About 18 minutes to the airport. Weekend and Sunday tables run a shorter span; check the operator's sheet for those days.