Building a multimodal itinerary in Europe

1. Define your priority constraint: price, time, comfort or ecology. Each one points to a different dominant mode.
2. Always compare every mode. A Paris–Marseille can be faster by TGV than the low-cost flight + airport shuttle combo.
3. Check connections. A short connection cuts total duration but raises the risk of missing the next leg. Allow at least 20 minutes' margin between two legs.
4. Think about the first and last mile. A cheap flight to a secondary airport can become expensive once you factor in the shuttle time and cost.

Gopaxo already provides the multimodal search. For longer European trips (several days, several countries), complement with an Interrail / Eurail pass for free-flow travel, and check Rome2Rio to identify side options (ferries, small unlisted regional carriers).

• Paris → Porto: low-cost flight Paris Beauvais / Orly → Porto, then metro from the airport.
• Paris → Berlin: direct flight, or ÖBB Nightjet night train Paris–Berlin to sleep during the journey.
• Paris → Rome: TGV Paris–Milan (Frecciarossa or Trenitalia), then Frecciarossa Milan–Rome.
• Paris → Amsterdam: direct Eurostar 3 h 19.
• Lyon → Madrid: TGV Lyon–Barcelona then Renfe AVE / AVLO Barcelona–Madrid.

Keep your booking confirmations on your phone (plus a backup PDF), download station and airport maps before leaving, and book your next train ticket as early as possible to take advantage of low fares (see SNCF timetables).