Asiana Airlines (OZ) operates a daily flight OZ162 (code-shared as NH6986) from Incheon Airport in Korea to Hiroshima Airport in A321. The departure time is 18:40 and the arrival time in Hiroshima Airport is 20:05. As Incheon's minimum connecting time is 70 min., your arrival must be prior to 17:30. You can make a connection from most European flights and many of the U.S. flights. The returning flight, OZ161 departs in Hiroshima Airport at 09:40 and arrives at Incheon at 11:20. While you need to wake up a little bit early in the morning to take the Airport Bus service at around 7am, you will be able to make connections to various destinations in Incheon.
China Airline (CI) operates a daily flight CI112 from Taipei (TPE), Taiwan departing at 16:45, to Hiroshima (HIJ) arriving at 19:55 in B738. The returning flight CI113 departing at Hiroshima (HIJ) at 10:00 arrives at Taipei (TPE) at 11:50.
China Eastern Airlines (MU) operates a daily flight MU293 from Shanghai Pudon (PVG), China departing at 09:15 to Hiroshima (HIJ) arriving at 12:05 in A319. The returning flight MU294 departs from Hiroshima at 13:00 arrivs at Shanghai Pudon (PVG) at 13:50.
Air China International (CA) operates 5 weekly flights (except Saturday and Tuesday) CA153 from Beijing (PEK) departing at 08:30 one-stop at Dalien (DLC) departing at 10:40 to Hiroshima (HIJ) arriving at 13:30 in B733. The returning flight CA154 departs at 14:30 will arrive at Dalien (DLC) at 15:15 and Beijing (PEK) at 17:45.
China Southern Airlines (CZ) operates 4 weekly flights (Thursday, Saturday, Sunday, and Tuesday) CZ647 from Dalien (DLC) departing at 08:25 arriving at 11:25 in A319. The returning flight CZ648 departs from Hiroshima at 12:25 arriving at Dalien (DLC) at 13:25.