From London to Rome by sea, land and air [closed]

3 or 4 trains from Calais or Dunkerque to a French airport?

• Calais - CDG: quite a few options with a single change, either in Lille or in Paris Nord. Note that you may need to leave from Calais Frethun rather than Calais Ville (but you'll need a taxi to get from the ferry terminal to the train station anyway), and if via Lille, you may need to go from Lille Europe to Lille Flandres. But there's at least one option for doing it in less than 2 hours.

• Dunkerque - CDG: change in Lille, Paris or Arras. Shortest: 2h16.

• Not in France, but you can do Calais-Bruxelles National in 1h33 with a single change in Bruxelles-Midi.

Getting to Lyon St Exupery is surprisingly long (over 5 hours), but can be done with a single change.

There are other options like Strasbourg (a bit over 4 hours, 1 change), but there's no train station in the airport, so you need to get from the train station downtown to the airport.

I am not sure this is a great idea in general, but a practical route would be:

• London to Harwich; train from Liverpool Street to Harwich International. The train can be timed to meet...

• Harwich to Hook of Holland - either a daytime or overnight sailing, takes 8-9 hours.

• Hook of Holland to Schiphol Airport - in theory this is a train via Rotterdam, but the Hook of Holland line is closed until early 2019. There is a replacement bus to Rotterdam (~30m) and then you can get regular fast trains to Schiphol (~30m).

• Schiphol to Rome - for the random day in October I checked, there were twelve flights to Rome Fiumicino, though the timing isn't always great.

You can get a combined "rail and sail" ticket from Stena Line which covers the train journeys as well as the ferry.

Picking up on the mention of Sardinia in @skifans answer, you could fly from London to Sardinia, and get a ferry from there to mainland Italy. For example Ryanair fly Stansted to Cagliari, from where you can get a ferry to Cittavecia.

Jersey airport on the channel islands is only a 15 minutes taxi from the docks. However, it has very limited flights to the European continent, you'll likely need to change planes and likely by back tracking to the UK.

According to ferries (https://www.directferries.co.uk/ferries_from_jersey_to_england.htm) operate a daily services from Pole and Portsmouth.

At time of writing there is a summer only Saturday Flybe flight to Zurich which arrives in time for the last Swiss flight down to Rome, always check for your exact dates of travel. And you will get a greater choice if changing in the UK.

Alternatively you could fly to the island of Sardinia by changing at Bern with Sky works, and then catch another ferry towords Rome. You'll likely need another train/bus/taxi to get from the western Italy docks into Rome.