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Liège to Köln: train or flight?

The train takes about 1 h 02 min with no changes. The two cities are about 100 km apart in a straight line.

At a glance

  • Train time: 1 h 02 min, direct.
  • CO₂ per traveller, one way (estimate): train 1–4 kg, flight 8–15 kg.
  • Airports near Liège: LGG.
  • Airports near Köln: CGN.
  • Door to door (estimate): train 1 h 42 min, flight 3 h 03 min. Includes getting to the station or airport, security and boarding.
  • Both ways: Köln to Liège takes about the same.

Duration from public timetable data for a typical weekday. CO₂ uses UK government (DEFRA 2025) factors; the high end of flying includes non-CO₂ effects. Fares change daily, so check the ticket provider for current prices. Times are not live: check the timetable before you travel.

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