Air distance from Helsinki Finland to Okayama Japan is 4778.2 Miles (7689.7 Kilometers / 4149.3 Nautical Miles).
Flight duration time from Helsinki Finland to Okayama Japan is 9 hrs, 55 mins. This is the In-The-Air flight time. You should also add the taxi time, airport wait times and possible delays due to bad weather, etc. for the total flight duration time.