London and Paris is the obvious two-city pairing in Europe, and the Eurostar makes it absurdly easy. Two and a quarter hours city centre to city centre, no airport security theatre, no checked bags. The combination works for a long weekend, a week, or anything in between.

Why This Combination Works

These two cities have genuine rivalries and genuine complementarity. London is scruffier, more multicultural, more expensive to eat and drink. Paris is more beautiful at street level, better for walking aimlessly, and cheaper for wine with dinner. Together they cover most of what people come to Europe for: history, food, art, and the sense of being somewhere that has been important for a very long time.

For a 7-night trip, 3 nights in London and 4 in Paris works well, or flip it depending on your priorities. For a long weekend, 2 nights each with Friday arrival and Tuesday departure is the sweet spot. Fewer than 4 nights total means you are skimming both cities — if pressed, pick one and return for the other.

Getting Between the Cities

Eurostar: London St Pancras International to Paris Gare du Nord. Journey time is 2 hours 15 minutes. Prices range from 39 GBP to 200+ GBP depending on how far in advance you book. Standard Premier and Business Premier exist if you want a meal included.

St Pancras tips: Arrive 30 minutes before departure minimum, 45 to be comfortable. Check-in closes 30 minutes before. You clear UK border control at St Pancras on departure, and French border control also happens there, so the Gare du Nord arrival is quick. The champagne bar on the platform is a real thing and a reasonable pre-travel ritual.

Flying: Heathrow or Gatwick to CDG takes about an hour in the air, but with security, transfers, and the faff at both ends, the door-to-door time is 4+ hours. The Eurostar is city-centre to city-centre and usually faster in practice.

Recommendation: The Eurostar is not just more convenient, it is also lower emissions and better for luggage. Book it. Book it early for the best prices.

Which City to Visit First

Start in London if you are flying in from outside Europe, since Heathrow is likely your entry point. If you are travelling from the continent, start in Paris. Either direction works equally well on the Eurostar.

What Each City Adds to the Trip

London

London brings the British Museum, the Tate Modern, Borough Market, and an energy that comes from being one of the most diverse cities on earth. The city is large and hard to exhaust. The pubs are better than Paris will tell you, the South Bank walk is free and excellent, and the neighbourhood variety across Shoreditch, Notting Hill, and Brixton gives each day a different texture.

Paris

Paris delivers Montmartre, the Seine at night, the Louvre, more bread and cheese than is strictly responsible, and a street-level beauty that London mostly lacks. The Marais for wandering, the 11th for dinner, the Musée d'Orsay for the Impressionists. It is the city that earns its own mythology more consistently than most.