February fares dip to USD 280, which is the kind of number that makes you forgive Heathrow for its five terminals and its queues on the transatlantic morning banks. Nearly 235,000 TripAdvisor reviewers and a 4.47 rating confirm what you already suspected: the museums and theatre are worth the immigration line. Klarna, Clearpay, Zilch and Scalapay all cover the routes here, so the instalments are as easy as the flight frequency is generous. Just don't expect Central London itself to be the bargain the airfare was.