| Osaka (KIX) Kansai International Airport | Japan | 535 mi | 1h 41m | Jeju Air, Peach Aviation, and Asiana Airlines | 37-38/day |
| Tokyo (NRT) Narita International Airport | Japan | 781 mi | 2h 12m | Jeju Air, Korean Air, and Asiana Airlines | 36-37/day |
| Fukuoka (FUK) Fukuoka Airport | Japan | 350 mi | 1h 18m | Jeju Air, Jin Air, and Korean Air | 26-27/day |
| Hong Kong (HKG) Chek Lap Kok International Airport | Hong Kong SAR China | 1,286 mi | 3h 14m | Hong Kong Express, Cathay Pacific, and Korean Air | 19-20/day |
| Shanghai (PVG) Shanghai Pudong International Airport | China | 511 mi | 1h 38m | China Eastern, Asiana Airlines, and Korean Air | 17-18/day |
| Qingdao (TAO) Qingdao/Jiaodong Airport | China | 359 mi | 1h 19m | Shandong, China Eastern, and Korean Air | 15-16/day |
| Taipei (TPE) Taiwan Taoyuan International Airport | Taiwan | 909 mi | 2h 28m | Asiana Airlines, China, and EVA Air | 12-13/day |
| Da Nang (DAD) Da Nang International Airport | Vietnam | 1,852 mi | 4h 24m | Korean Air, T'Way Air, and Asiana Airlines | 10-11/day |
| Bangkok (BKK) Suvarnabhumi Airport | Thailand | 2,280 mi | 5h 17m | Korean Air, Thai Airways, and Asiana Airlines | 10-11/day |
| Singapore (SIN) Singapore Changi International Airport | Singapore | 2,875 mi | 6h 31m | Singapore Airlines, Korean Air, and Asiana Airlines | 10-11/day |
| Manila (MNL) Ninoy Aquino International Airport | Philippines | 1,621 mi | 3h 56m | Korean Air, Asiana Airlines, and Cebu Pacific Air | 10-11/day |
| Beijing (PEK) Beijing Capital International Airport | China | 561 mi | 1h 44m | Air China, Asiana Airlines, and Korean Air | 8-9/day |
| Hanoi (HAN) Noi Bai International Airport | Vietnam | 1,668 mi | 4h 1m | Asiana Airlines, Korean Air, and Vietnam | 8-9/day |
| Nagoya (NGO) Chubu Centrair International Airport | Japan | 605 mi | 1h 50m | Jeju Air, Asiana Airlines, and Jin Air | 8-9/day |
| Ho Chi Minh City (SGN) Tan Son Nhat International Airport | Vietnam | 2,214 mi | 5h 9m | Korean Air, Asiana Airlines, and Vietnam | 8-9/day |
| Sapporo (CTS) New Chitose Airport | Japan | 883 mi | 2h 24m | Jeju Air, Korean Air, and Asiana Airlines | 8/day |
| Nha Trang (CXR) Cam Ranh Airport | Vietnam | 2,057 mi | 4h 50m | Air Busan, Korean Air, and T'Way Air | 7-8/day |
| Ulaanbaatar (UBN) Chinggis Khaan International Airport | Mongolia | 1,216 mi | 3h 6m | Miat - Mongolian, Korean Air, and Aero Mongolia | 6-7/day |
| Guangzhou (CAN) Guangzhou Baiyun International Airport | China | 1,246 mi | 3h 9m | China Southern, Asiana Airlines, and Korean Air | 6-7/day |
| Naha (OKA) Naha Airport | Japan | 782 mi | 2h 12m | Asiana Airlines, EASTAR JET, and Jeju Air | 6/day |
| Yanji (YNJ) Yanji Chaoyangchuan Airport | China | 406 mi | 1h 25m | Asiana Airlines, China Eastern, and China Southern | 5-6/day |
| Dalian (DLC) Zhoushuizi Airport | China | 286 mi | 1h 10m | China Southern, Korean Air, and Asiana Airlines | 5-6/day |
| Busan (PUS) Gimhae International Airport | South Korea | 210 mi | 1h 1m | Korean Air | 5-6/day |
| Shenzhen (SZX) Shenzhen Bao'an International Airport | China | 1,271 mi | 3h 12m | Shenzhen, Asiana Airlines, and China Southern | 5/day |
| Tianjin (TSN) Tianjin Binhai International Airport | China | 507 mi | 1h 38m | Korean Air, Air China, and Asiana Airlines | 4-5/day |
| Duong Dong (PQC) Phu Quoc Airport | Vietnam | 2,344 mi | 5h 25m | Korean Air, VietJetAir, and EASTAR JET | 4-5/day |
| Yantai (YNT) Penglai Intl | China | 299 mi | 1h 12m | China Eastern, EASTAR JET, and SF Airlines | 4-5/day |
| Shenyang (SHE) Taoxian Airport | China | 329 mi | 1h 16m | China Southern and Korean Air | 4/day |
| Jinan (TNA) Yaoqiang Airport | China | 510 mi | 1h 38m | Shandong | 3-4/day |
| Kuala Lumpur (KUL) Kuala Lumpur International Airport | Malaysia | 2,866 mi | 6h 30m | Malaysia Airlines, Korean Air, and Malindo Air | 3-4/day |
| Weihai (WEH) Weihai Airport | China | 233 mi | 1h 4m | Jeju Air, China Eastern, and China Central Longhao | 3-4/day |
| Nanjing (NKG) Nanjing Lukou Airport | China | 585 mi | 1h 47m | China Eastern, Asiana Airlines, and Korean Air | 3-4/day |
| Jakarta (CGK) Soekarno-Hatta International Airport | Indonesia | 3,271 mi | 7h 20m | Asiana Airlines, Korean Air, and Garuda Indonesia | 3-4/day |
| Hangzhou (HGH) Hangzhou Xiaoshan International Airport | China | 607 mi | 1h 50m | Air China, Asiana Airlines, and China Eastern | 3-4/day |
| Harbin (HRB) Taiping Airport | China | 564 mi | 1h 45m | China Southern, Asiana Airlines, and Jeju Air | 3-4/day |
| Macao (MFM) Macau International Airport | Macao SAR China | 1,307 mi | 3h 17m | Air Macau, Jeju Air, and Korean Air | 3-4/day |
| Bali (DPS) Ngurah Rai (Bali) International Airport | Indonesia | 3,276 mi | 7h 21m | Korean Air and Jeju Air | 3/day |
| Kaohsiung City (KHH) Kaohsiung International Airport | Taiwan | 1,091 mi | 2h 50m | China, EVA Air, and T'Way Air | 3/day |
| Tokyo (HND) Tokyo International Airport | Japan | 751 mi | 2h 8m | Asiana Airlines, Korean Air, and Peach Aviation | 3/day |
| Beijing (PKX) Beijing Daxing International Airport | China | 561 mi | 1h 44m | Air China, China Eastern, and China Southern | 3/day |
| Taichung City (RMQ) Taichung Ching Chuang Kang Airport | Taiwan | 975 mi | 2h 36m | Jin Air and T'Way Air | 2-3/day |
| Changchun (CGQ) Longjia Airport | China | 453 mi | 1h 31m | China Southern and Asiana Airlines | 2-3/day |
| Kobe (UKB) Kobe Airport | Japan | 528 mi | 1h 40m | Korean Air and Jeju Air | 2-3/day |
| Lapu-Lapu City (CEB) Mactan Cebu International Airport | Philippines | 1,883 mi | 4h 28m | Korean Air, Cebu Pacific Air, and Jeju Air | 2-3/day |
| Angeles City (CRK) Diosdado Macapagal International Airport | Philippines | 1,581 mi | 3h 51m | Jeju Air, Jin Air, and Asiana Airlines | 2-3/day |
| Tianfu (TFU) Chengdu/Tianfu Airport | China | 1,352 mi | 3h 22m | Air China, Asiana Airlines, and Sichuan Airlines | 2-3/day |
| Zhengzhou (CGO) Xinzheng Airport | China | 733 mi | 2h 6m | Korean Air, China Southern, and EASTAR JET | 2-3/day |
| Tashkent (TAS) Tashkent International Airport | Uzbekistan | 3,010 mi | 6h 48m | Uzbekistan, Asiana Airlines, and Taban | 2/day |
| Almaty (ALA) Almaty International Airport | Kazakhstan | 2,593 mi | 5h 56m | Air Astana, Asiana Airlines, and EASTAR JET | 2/day |
| Krong Ta Khmau (KTI) Techo International Airport | Cambodia | 2,244 mi | 5h 13m | Korean Air, Asiana Airlines, and Sky Angkor | 2/day |
| Chongqing (CKG) Chongqing Jiangbei International Airport | China | 1,256 mi | 3h 11m | Air China and Asiana Airlines | 2/day |
| Xi'an (XIY) Xi'an Xianyang International Airport | China | 1,010 mi | 2h 40m | Korean Air, Asiana Airlines, and China Postal Airlines | 2/day |
| FSZ (FSZ) Mt. Fuji Shizuoka Airport | Japan | 680 mi | 1h 59m | Jeju Air | 2/day |
| Matsuyama (MYJ) Matsuyama Airport | Japan | 432 mi | 1h 28m | Jeju Air | 2/day |
| Hiroshima (HIJ) Hiroshima Airport | Japan | 418 mi | 1h 27m | Jeju Air | 2/day |
| Kumamoto (KMJ) Kumamoto Airport | Japan | 405 mi | 1h 25m | Korean Air and T'Way Air | 2/day |
| Takamatsu (TAK) Takamatsu Airport | Japan | 479 mi | 1h 34m | Air Seoul and Jin Air | 1-2/day |
| Dayong (DYG) Dayong Airport | China | 1,088 mi | 2h 50m | Sichuan Airlines, Air Seoul, and Korean Air | 1-2/day |
| Changsha (CSX) Changsha Huanghua Airport | China | 999 mi | 2h 39m | Asiana Airlines, Korean Air, and China Southern | 1-2/day |
| Wuxi (WUX) Sunan Shuofang International Airport | China | 536 mi | 1h 41m | China Eastern, Shenzhen, and JDL | 1-2/day |
| Phuket (HKT) Phuket International Airport | Thailand | 2,685 mi | 6h 7m | Asiana Airlines and Korean Air | 1-2/day |
| Xiamen (XMN) Xiamen Gaoqi International Airport | China | 1,019 mi | 2h 41m | Xiamen and Korean Air | 1-2/day |
| Fuzhou (FOC) Fuzhou Changle International Airport | China | 891 mi | 2h 25m | Xiamen and Korean Air | 1-2/day |
| Wuhan (WUH) Wuhan Tianhe International Airport | China | 838 mi | 2h 19m | Korean Air, China Southern, and T'Way Air | 1-2/day |
| New Delhi (DEL) Indira Gandhi International Airport | India | 2,891 mi | 6h 33m | Air India and Korean Air | 1-2/day |
| Kota Kinabalu (BKI) Kota Kinabalu International Airport | Malaysia | 2,275 mi | 5h 17m | AirAsia, Jeju Air, and Jin Air | 1-2/day |
| Dubai (DXB) Dubai International Airport | United Arab Emirates | 4,181 mi | 9h 13m | Emirates | 1-2/day |
| Doha (DOH) Hamad International Airport | Qatar | 4,382 mi | 9h 38m | Qatar Airways | 1-2/day |
| Chiang Mai (CNX) Chiang Mai International Airport | Thailand | 2,102 mi | 4h 55m | Jin Air, Air Busan, and Jeju Air | 1-2/day |
| Panglao (TAG) Panglao Bohol International Airport | Philippines | 1,935 mi | 4h 35m | Jeju Air and Jin Air | 1-2/day |
| Kunming (KMG) Kunming Wujiaba International Airport | China | 1,637 mi | 3h 58m | China Eastern and Korean Air | 1-2/day |
| Abu Dhabi (AUH) Abu Dhabi International Airport | United Arab Emirates | 4,249 mi | 9h 21m | Etihad Airways | 1/day |
| Ishigaki (ISG) Ishigaki Airport | Japan | 917 mi | 2h 28m | Jin Air | 1/day |
| SHI (SHI) Shimojishima Airport | Japan | 877 mi | 2h 24m | Jin Air | 1/day |
| Sendai (SDJ) Sendai Airport | Japan | 790 mi | 2h 13m | Asiana Airlines | 1/day |
| Niigata (KIJ) Niigata Airport | Japan | 693 mi | 2h 1m | Korean Air | 1/day |
| Kanazawa (KMQ) Komatsu Airport | Japan | 555 mi | 1h 44m | Korean Air | 1/day |
| Kitakyushu (KKJ) Kitakyushu Airport | Japan | 359 mi | 1h 19m | Jin Air | 1/day |
| Daegu (TAE) Daegu Airport | South Korea | 164 mi | 55m | Korean Air | 1/day |
| Vientiane (VTE) Wattay International Airport | Laos | 1,975 mi | 4h 40m | Lao | 1/day |
| Aomori (AOJ) Aomori Airport | Japan | 795 mi | 2h 13m | Korean Air | 1/day |
| Hefei (HFE) Hefei Xinqiao International Airport | China | 657 mi | 1h 56m | Korean Air | 1/day |
| Yonago (YGJ) Miho Yonago Airport | Japan | 401 mi | 1h 25m | Air Seoul | 1/day |
| Astana (NQZ) Nursultan Nazarbayev International Airport | Kazakhstan | 2,805 mi | 6h 22m | Air Astana | 1/day |
| Manado-Celebes Island (MDC) Sam Ratulangi Airport | Indonesia | 2,484 mi | 5h 42m | EASTAR JET | 1/day |
| Yangon (RGN) Yangon International Airport | Myanmar (Burma) | 2,325 mi | 5h 23m | Myanmar International and Korean Air | 4×/wk |
| Bangkok (DMK) Don Mueang International Airport | Thailand | 2,273 mi | 5h 16m | Thai AirAsia | 1/day |
| Kalibo (KLO) Kalibo International Airport | Philippines | 1,800 mi | 4h 18m | T'Way Air | 1/day |
| Haiphong (HPH) Cat Bi International Airport | Vietnam | 1,649 mi | 3h 59m | VietJetAir | 1/day |
| Shijiazhuang (SJW) Shijiazhuang Daguocun International Airport | China | 643 mi | 1h 55m | Jeju Air and Spring | 4×/wk |
| Okayama City (OKJ) Okayama Airport | Japan | 454 mi | 1h 31m | Korean Air | 1/day |
| Saga (HSG) Saga Airport | Japan | 369 mi | 1h 21m | T'Way Air | 1/day |
| Shymkent (CIT) Shymkent Airport | Kazakhstan | 2,981 mi | 6h 44m | SCAT | 3×/wk |
| Bishkek (BSZ) Manas International Airport | Kyrgyzstan | 2,723 mi | 6h 12m | T'Way Air | 3×/wk |
| Bandar Seri Begawan (BWN) Brunei International Airport | Brunei | 2,362 mi | 5h 27m | Royal Brunei | 3×/wk |
| Haikou (HAK) Haikou Meilan International Airport | China | 1,546 mi | 3h 46m | Hainan | 3×/wk |
| Ezhou (EHU) Ezhou Huahu Airport | China | 818 mi | 2h 16m | SF Airlines | 3×/wk |
| Wenzhou (WNZ) Wenzhou Yongqiang Airport | China | 736 mi | 2h 6m | Air China | 3×/wk |
| Tokushima (TKS) Tokushima Airport | Japan | 512 mi | 1h 38m | EASTAR JET | 3×/wk |
| Miyazaki (KMI) Miyazaki Airport | Japan | 479 mi | 1h 34m | Asiana Airlines | 3×/wk |
| Kagoshima (KOJ) Kagoshima Airport | Japan | 460 mi | 1h 32m | Korean Air | 3×/wk |
| Oita (OIT) Oita Airport | Japan | 405 mi | 1h 25m | Jeju Air | 3×/wk |
| Nagasaki (NGS) Nagasaki Airport | Japan | 370 mi | 1h 21m | Korean Air | 3×/wk |
| Kathmandu (KTM) Tribhuvan International Airport | Nepal | 2,465 mi | 5h 40m | Korean Air | 2×/wk |
| Hualien City (HUN) Hualien Airport | Taiwan | 972 mi | 2h 35m | Aero K | 2×/wk |
| Ordos (DSN) Ordos Ejin Horo Airport | China | 907 mi | 2h 27m | China United | 2×/wk |
| Omitama (IBR) Hyakuri Airport | Japan | 777 mi | 2h 11m | Aero K | 2×/wk |
| Yancheng (YNZ) Yancheng Airport | China | 449 mi | 1h 31m | Asiana Airlines | 2×/wk |
| Jeju City (CJU) Jeju International Airport | South Korea | 273 mi | 1h 9m | Jeju Air | 2×/wk |
| Yerevan (EVN) Zvartnots International Airport | Armenia | 4,254 mi | 9h 22m | Korean Air | weekly |
| Ashgabat (ASB) Ashgabat Airport | Turkmenistan | 3,632 mi | 8h 5m | Turkmenistan | weekly |
| Colombo (CMB) Bandaranaike International Apt Colombo Airport | Sri Lanka | 3,584 mi | 7h 59m | SriLankan | weekly |
| Guiyang (KWE) Longdongbao Airport | China | 1,372 mi | 3h 25m | Colorful Guizhou | weekly |
| Jiamusi (JMU) Jiamusi Airport | China | 679 mi | 1h 59m | Jeju Air | weekly |
| Cheongju (CJJ) Cheongju International Airport | South Korea | 78 mi | 45m | Aero K | weekly |