Another day in Paris
Take a night from Lucerne: Paris six, Lucerne three, Munich three, Frankfurt one. The first train date moves with it.
A 14-day family trip
Five nights in Paris, four in Lucerne, three in Munich, and one near Frankfurt Airport. Thirteen nights, with three hotel changes.
An illustrated trip, not a live quote or confirmed train schedule.

Days 1–5 · 5 nights
Leave room for a gentle arrival day, neighbourhood walks and the sights your family most wants to see.

Days 6–9 · 4 nights
Choose the clearest day for a mountain outing. Keep an indoor or lake-level plan ready for a different kind of day.

Days 10–12 · 3 nights
Spend time in the old town, parks or museums. Compare any longer day trip with another day close to your hotel.

Day 13 · 1 night
Put the final intercity train on the day before your flight. Choose the last hotel and airport arrival time around your terminal and airline guidance.
Day 14: fly home from Frankfurt.
Take a night from Lucerne: Paris six, Lucerne three, Munich three, Frankfurt one. The first train date moves with it.
Skip Munich: compare Paris six, Lucerne six, and a final airport night. Check the ride from your last base to the airport city.
If mountain outings are the focus, compare Lucerne with another base. Check the outings and travel days that matter to your family.
Move to Lucerne on day six, Munich on day ten, and Frankfurt on day thirteen. Keep those evenings simple. Choose departures after checking the timetable for your actual date.
Work out the booking order