467 - 880 USD
Most travelers find the cheapest round-trip airfare to London when booking during the month of September.
On average, from most locations, when planning your trip to London, try to book your flight in the region of 60 days in advance for the cheapest prices.
Most of our users find that booking their departure to London on a Tuesday is the cheapest. Conversely, departing on a Saturday seems to be the most expensive.
Typically, cheap prices to London are most often found for noon flights. Cheap prices are less likely for afternoon flights.