| Jeju City (CJU) Jeju International Airport | South Korea | 181 mi | 57m | Air Busan, Jeju Air, and Korean Air | 28-29/day |
| Seoul (GMP) Gimpo International Airport | South Korea | 203 mi | 1h | Air Busan, Korean Air, and T'Way Air | 17-18/day |
| Taipei (TPE) Taiwan Taoyuan International Airport | Taiwan | 835 mi | 2h 18m | China, Air Busan, and Jeju Air | 12-13/day |
| Osaka (KIX) Kansai International Airport | Japan | 361 mi | 1h 20m | Air Busan, Jin Air, and Jeju Air | 12-13/day |
| Fukuoka (FUK) Fukuoka Airport | Japan | 140 mi | 52m | Air Busan, EASTAR JET, and Jeju Air | 11/day |
| Tokyo (NRT) Narita International Airport | Japan | 645 mi | 1h 55m | Jeju Air, Jin Air, and Korean Air | 7/day |
| Seoul (ICN) Incheon International Airport | South Korea | 210 mi | 1h 1m | Korean Air | 5-6/day |
| Shanghai (PVG) Shanghai Pudong International Airport | China | 498 mi | 1h 37m | Korean Air, China Eastern, and Shanghai | 4-5/day |
| Kaohsiung City (KHH) Kaohsiung International Airport | Taiwan | 1,013 mi | 2h 40m | Air Busan, Jeju Air, and T'Way Air | 3/day |
| Nha Trang (CXR) Cam Ranh Airport | Vietnam | 2,022 mi | 4h 45m | Vietnam, Air Busan, and VietJetAir | 2-3/day |
| Sapporo (CTS) New Chitose Airport | Japan | 861 mi | 2h 22m | Jin Air, Jeju Air, and EASTAR JET | 2-3/day |
| Da Nang (DAD) Da Nang International Airport | Vietnam | 1,841 mi | 4h 23m | Air Busan, Jin Air, and VietJetAir | 2-3/day |
| Hong Kong (HKG) Chek Lap Kok International Airport | Hong Kong SAR China | 1,269 mi | 3h 12m | Hong Kong Express and T'Way Air | 2-3/day |
| Singapore (SIN) Singapore Changi International Airport | Singapore | 2,834 mi | 6h 26m | Jeju Air and Singapore Airlines | 2/day |
| Qingdao (TAO) Qingdao/Jiaodong Airport | China | 502 mi | 1h 37m | Air Busan and Korean Air | 2/day |
| Nagoya (NGO) Chubu Centrair International Airport | Japan | 446 mi | 1h 30m | Jin Air and Korean Air | 2/day |
| Ho Chi Minh City (SGN) Tan Son Nhat International Airport | Vietnam | 2,189 mi | 5h 6m | Vietnam and VietJetAir | 1-2/day |
| Beijing (PEK) Beijing Capital International Airport | China | 755 mi | 2h 8m | Air China and Korean Air | 1-2/day |
| Hanoi (HAN) Noi Bai International Airport | Vietnam | 1,700 mi | 4h 5m | Vietnam and VietJetAir | 1-2/day |
| Naha (OKA) Naha Airport | Japan | 625 mi | 1h 52m | Jin Air and EASTAR JET | 1-2/day |
| Yanji (YNJ) Yanji Chaoyangchuan Airport | China | 533 mi | 1h 41m | Air Busan and EASTAR JET | 1-2/day |
| Duong Dong (PQC) Phu Quoc Airport | Vietnam | 2,332 mi | 5h 24m | VietJetAir, Jin Air, and EASTAR JET | 1-2/day |
| Bangkok (BKK) Suvarnabhumi Airport | Thailand | 2,298 mi | 5h 19m | Air Busan, Jeju Air, and Jin Air | 1-2/day |
| Ulaanbaatar (UBN) Chinggis Khaan International Airport | Mongolia | 1,425 mi | 3h 31m | Jeju Air, Air Busan, and Jin Air | 1-2/day |
| Dayong (DYG) Dayong Airport | China | 1,158 mi | 2h 58m | Air Busan and Jeju Air | 1-2/day |
| Taichung City (RMQ) Taichung Ching Chuang Kang Airport | Taiwan | 903 mi | 2h 27m | Jin Air and Starlux | 1-2/day |
| Matsuyama (MYJ) Matsuyama Airport | Japan | 234 mi | 1h 4m | Air Busan | 1-2/day |
| Manila (MNL) Ninoy Aquino International Airport | Philippines | 1,511 mi | 3h 42m | Philippine Airlines | 1/day |
| Kumamoto (KMJ) Kumamoto Airport | Japan | 196 mi | 59m | EASTAR JET | 1/day |
| Lapu-Lapu City (CEB) Mactan Cebu International Airport | Philippines | 1,747 mi | 4h 11m | Air Busan and Jin Air | 1/day |
| Bali (DPS) Ngurah Rai (Bali) International Airport | Indonesia | 3,165 mi | 7h 7m | Air Busan | 1/day |
| Angeles City (CRK) Diosdado Macapagal International Airport | Philippines | 1,476 mi | 3h 38m | Jin Air | 1/day |
| Macao (MFM) Macau International Airport | Macao SAR China | 1,291 mi | 3h 15m | Air Busan | 3×/wk |
| FSZ (FSZ) Mt. Fuji Shizuoka Airport | Japan | 524 mi | 1h 40m | Air Busan | 3×/wk |
| Takamatsu (TAK) Takamatsu Airport | Japan | 296 mi | 1h 12m | Air Busan | 3×/wk |
| Almaty (ALA) Almaty International Airport | Kazakhstan | 2,787 mi | 6h 20m | EASTAR JET | 2×/wk |
| Chiang Mai (CNX) Chiang Mai International Airport | Thailand | 2,153 mi | 5h 2m | EASTAR JET | 2×/wk |
| Panglao (TAG) Panglao Bohol International Airport | Philippines | 1,799 mi | 4h 18m | Jeju Air | 2×/wk |
| Xi'an (XIY) Xi'an Xianyang International Airport | China | 1,144 mi | 2h 57m | Air Busan | 2×/wk |
| Shijiazhuang (SJW) Shijiazhuang Daguocun International Airport | China | 816 mi | 2h 16m | Jeju Air | 2×/wk |
| SHI (SHI) Shimojishima Airport | Japan | 750 mi | 2h 8m | Jin Air | 2×/wk |
| Shenyang (SHE) Taoxian Airport | China | 535 mi | 1h 41m | China Southern | 2×/wk |