The long-haul flight to Japan takes just over 11 hours non-stop. The total flight duration from London to Tokyo is 11 hours and 25 minutes and from London to Osaka is 13 hours and 50 minutes including one connection.

A direct flight from the UK (typically London Heathrow) to Japan (Tokyo Haneda or Narita) currently takes approximately 13 to 14 hours. Before 2022, these flights were about two hours shorter, but due to the ongoing closure of Russian airspace in 2026, airlines must take longer southern or northern routes to reach East Asia. British Airways, Japan Airlines (JAL), and All Nippon Airways (ANA) are the primary carriers offering these nonstop services. If you opt for a flight with a connection (such as via Dubai, Doha, or Helsinki), the total travel time can stretch to 16 to 20+ hours depending on the length of the layover. While the journey is long-haul and spans a 9-hour time difference, the nonstop route remains the most efficient way to travel, typically departing London in the evening and arriving in Tokyo the following afternoon. For those seeking maximum comfort on this 6,000-mile journey, the new Airbus A350 and Boeing 787 Dreamliner aircraft used on these routes feature improved cabin pressure and humidity to help mitigate the effects of jet lag.