Originally Posted by
jib71
My guess would be lack of competition. Depending on the dates you're searching it may also be a function of high demand - especially if carriers have reduced capacity on routes.
The capacity reduction were done because of a LCC is going to operate the route - now that I check that LCC, it do have some tickets down to 5000NTD round trip for TPE-HKD.
BTW - Is there a flight from Hokkaido to Sakhalin? I can see routes via ICN, which is quite a long distance.
http://airportus.ru/schedule/ 3 flights per week