Yes, there are multiple flights from Hong Kong to Kauai for under HK$ 6,201. The cheapest flight booked recently is on United Airlines for just HK$ 5,643, but on average you can expect to pay HK$ 11,759.
United Airlines is one of the carriers that may have flexible change policies. You can use our site to filter for other airlines that may also have this kind of flexibility.
There are no direct flights from Hong Kong to Kauai, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.
Looking at all options, your cheapest flight can be booked for HK$ 11,813. While the most popular route (Hong Kong Intl - Lihue) can be booked for HK$ 8,062 on average our data indicates HK$ 11,813 when flying from Hong Kong to Lihue
Departing from Hong Kong to Kauai will take you 16h 06m. This flight may include one or multiple stops.
Currently priced at HK$ 5,644, United Airlines will fly you from Hong Kong to Kauai and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Japan Airlines and Qatar Airways - these airlines can fly you to your destination from HK$ 8,062 and HK$ 17,635, respectively.