Transportation in London is convenient with the Tube, buses, black cabs, or private hire vehicles. The iconic red buses are an inexpensive way to see the city. A single fare on the Tube or bus is approximately £2.90.
If you have more time, you may want to add a visit to the Tate Modern or the Westminster Abbey. Don't forget to try some fish and chips and a pint of ale. If you have less time, consider visiting fewer locations or just enjoy strolling in the city's beautiful parks.
London has six airports, with Heathrow (LHR) being the largest and busiest. The city center is about 14 miles away from Heathrow. Other airports include Gatwick (LGW), Stansted (STN), Luton (LTN), London City (LCY), and Southend (SEN). You can take the Heathrow Express, Gatwick Express, Stansted Express, or the Tube to get to the city center from the airports.