London Travel Guide: How Many Days, Getting Around, When to Go (2026)

London rewards a little planning. Its famous sights are spread across a wide city, its transit runs on a deep Tube network and flat-fare buses best paid with a tap of your phone, and its calendar swings between crowded summers and quiet, good-value shoulder seasons. This guide answers the practical questions travelers actually search, answer first, then the detail.

How many days do you need in London?

Short answer: three to four days for most people.

• 2 days covers the essential core if you are on a tight schedule: Westminster, the City of London, and the South Bank along the river. Follow our one day in London route and stretch it over two.
• 3 days adds the free museums of South Kensington, a park or two, and a market such as Borough or Camden, without rushing.
• 4 to 5 days reaches Greenwich, the East End, and day trips to Windsor, Oxford, or Cambridge at an unhurried pace.

The reason under-scheduling is the classic mistake: London is large and its draws sit in different quarters, so travel time between them is longer than the map suggests. Build in transit time and you will enjoy each place more.

Getting around London

Individual areas are a joy on foot. Westminster, the City, and the South Bank are best walked, and walking is how our self-guided London tours are built. Between areas, you combine walking with London's excellent transit:

• The Tube. The Underground is the fastest way across the city, eleven lines reaching almost everywhere a visitor wants to go, backed by the newer Elizabeth line and the Overground.
• Buses. An extensive network and a fine way to see the city above ground. A single fare is a flat 1.75 pounds no matter how far you go, and the Hopper fare lets you change buses free within one hour of your first tap.
• How to pay. Just tap a contactless bank card or phone, or an Oyster card, on the yellow reader. Both charge identical fares and both hit the same daily cap (about 8.90 pounds across Zones 1 to 2 in 2026), so pay-as-you-go never overcharges you. Tap in and out on the Tube and rail; tap once on buses.
• Oyster or contactless? Contactless is simpler for most visitors, nothing to buy or top up. Choose Oyster only if you lack contactless, want to share across a group, or need a child fare.

Most of the central sights on this guide sit within a short walk or one Tube stop of each other.

Best time to visit London

The trade-offs by season:

• Late spring (May). Mild, long days, gardens in bloom, and lighter crowds before the summer peak. One of the two best windows.
• Early autumn (September). Comfortable temperatures and summer crowds thinning after the school holidays. The other sweet spot.
• Summer (June to August). Warmest and busiest, with the longest daylight and the highest prices and queues.
• Shoulder and winter (March to April, October to February). Best value and shortest lines, cooler and darker, with Christmas lights making December atmospheric despite the cold.

London rain is possible in any month and usually light. Pack a compact waterproof rather than writing off a season for it.

Is London safe?

Yes. London ranks among the safer major world cities for visitors, and it is a welcoming place for solo and female travelers. Central areas are busy, well-lit, and heavily monitored. The realistic risk is opportunistic rather than violent: pickpocketing and phone snatching in crowds, on the Tube, and at riverside cafes where phones sit on tables. Ordinary precautions cover it: keep your phone in hand or pocket rather than on the table, wear a bag across your body in busy markets, watch your belongings on packed transport, and stick to main streets late at night. Violent crime affecting tourists is rare.

London on a budget

London is friendlier to a tight budget than its reputation suggests, because so much of the best of it is free:

• Free national museums: the British Museum, the National Gallery, Tate Modern, Tate Britain, the V&A, and the Natural History Museum are all free to enter. Only special temporary exhibitions are ticketed, and the British Museum asks you to book a free timed slot in the busy months.
• Free to walk: the Thames Path, the royal parks, Westminster's streets, the City's lanes, and the exterior of every landmark cost nothing. See what to eat in London for cheap, excellent street and market food.
• Cap your transit: contactless automatically limits your daily fare, so you cannot overspend on the Tube and buses.
• Skip the guide fee: Roamer self-guided audio tours are free to start, so you get expert narration without booking a private guide, a start time, or a tip.

Start planning your walk

Ready to route your days? Read our one day in London itinerary, see what to eat in London, browse the best self-guided walking tours in London, or see all London tours. Every tour is free to start, with roughly the first 30% of stops unlocked before an optional purchase, and can be downloaded in advance for offline listening.