South Korea's Asiana Airlines and Air Busan have expanded their codeshare agreement.
The two airlines will codeshare on two routes, Busan-Fukuoka and Busan-Osaka. Asiana has daily flights on both routes, while Air Busan will begin operating the Fukuoka service on 29 March and the Osaka service on 26 April.
Air Busan is managed by Asiana, which owns 46% of the carrier.
Korean Airlines (KAL) also operates on the Busan-Fukuoka route, according to Innovata. KAL and Japan Airlines are the other carriers with services between Busan and Osaka.