FAQs about travel to London
Helpful information for US passengers visiting London
When is the cheapest time to fly to London?
You can typically find cheap flights to London in January and February. This is usually the coldest time of the year and represents the city’s off-season, so you may find that the cost of flight tickets to London is lower as a result.
There tend to be fewer events and activities taking place during this period, but there’s still more than enough to see in the city to keep you occupied.
Alternatively, you can find cheap flights to London simply by planning ahead and booking your ticket in advance. Be sure to also check our flight deals page regularly for the latest offers on airline tickets to London from the US.
Is it better to fly into London Heathrow or Gatwick?
Heathrow Airport and Gatwick Airport are the largest and busiest airports in London, and both are well connected to the city center. Heathrow is closest to the city (approx. 15 miles or 24km west of central London), while Gatwick is about 28 miles (or 45km) south of the center.
Both major airports offer a wide range of rail, bus, and taxi options, and Heathrow’s terminals are conveniently serviced by the Piccadilly Underground and Elizabeth Line trains, allowing easy access to central London.
Use the flight-finder tool above to view the latest flights to both London airports from 12 departure cities in the United States, including Chicago (ORD) and New York (JFK).
How long is a flight from the US to London?
The average time of a flight to London from the United States is around 9 hours and 30 minutes. This can vary depending on which departure city you're traveling from, and whether you have a layover or not. If booking US to London flights with Icelandair, your journey will include a connection at our Keflavik Airport hub in Iceland.
When selecting round-trip flights to London, England, why not choose to Stopover in Iceland? You can spend up to 7 days relaxing in the Land of Fire and Ice at no additional airfare.
Do US citizens need a visa to fly to London?
US tourists can visit London without a visa for up to six months, providing they have a passport that is valid for their entire stay. View our travel document guidelines for more information on entry to the UK.