We've gone through lots of different flights, to help you find the cheapest way to get from London Heathrow to Kahului. You can choose from five airlines. At the moment, 09 / Sep / 2025 is the cheapest date to travel, but scroll through the results to find the option that works best for you.
British Airways is the most popular airline that flies from London Heathrow to Kahului. But it's still worth looking at other options, as there are 242 flights to Kahului every week. If you want to broaden your search, look at flights departing from other airports.
Generally speaking, the flight from London Heathrow to Kahului takes around 19 hrs 35 mins. The fastest flight takes 17 hrs 45 mins to cover the 11642 km distance. You can view all flight times yourself in the results list.
If you want to travel in August, it's best to book your flights early, as this is peak season in Kahului. The cheapest month to fly is normally March – try searching three to four months prior to then to get a bargain. You can also search by month, which will reveal the cheapest time of the week to fly.
