Skymark Airlines Co. said Monday that it plans to terminate its flights between Osaka and Sapporo and those between Osaka and Fukuoka by the end of June because of low profitability.

Skymark also said it plans to raise the number of daily flights between Tokyo’s Haneda airport and Fukuoka starting in July. The carrier said it presented a report on the changes in its flight services to the Transport Ministry the same day.

Skymark cited low boarding ratios for flights on the Osaka-Sapporo and Osaka-Fukuoka routes as the main reason behind its decision. to terminate these flights. Skymark operates three daily flights on each of the two routes. ,which it launched last April. Skymark was the first domestic airline to benefit from industry deregulation in the late 1990s, and in September 1998 became the first airline in 35 years to break into Japan’s domestic air service market.