Question : Interested in traveling in the next 30 days and want to get the lowest fare?
Answer : As of May 22nd, the best day for deals to London (LCY) is Jun 21st. It costs $943, which is 6% below the average price to book the same route.
Question : Is price more important than specific travel days for you?
Answer : The cheapest day to fly in June is Monday. Being flexible with your travel days garners even more savings during booking.
Question : How long do most people visit London?
Answer : Of course you're not most people, but if you were, you'd stay roughly nine days.
Question : What price range should you expect when booking from Washington (DCA) to London (LCY)?
Answer : Prices for this trip tend to fluctuate much less than other flights from the United States. They can vary from $880 to $1,030. Prices tend to be lower the further out you book.