Yes, there are multiple flights from Hong Kong to Nantong for under HK$ 5,427. The cheapest flight booked recently is on Air China for just HK$ 5,334, but on average you can expect to pay HK$ 5,334.
There are no direct flights from Hong Kong to Nantong, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.
Direct flights are available for this route on the following days: Sunday, Wednesday.
A quick flight from Hong Kong to Nantong can take about 20h 45m. Air China provides one of the quickest options available for as low as HK$ 5,335.
Air China, at HK$ 5,335, was found to be the cheapest airline from Hong Kong to Nantong..