Nonstop flights from Seoul (ICN)
158 nonstop routes from Incheon International, busiest first. Average daily departures over a recent period (AeroDataBox, November 2026).
| Destination | Flights a day | Distance | Airlines |
|---|---|---|---|
| Tokyo NRT | 47 | 1,257 km | Asiana Airlines, Ethiopian Airlines, Jeju Air |
| Osaka KIX | 45 | 860 km | Asiana Airlines, Jeju Air, Korean Air |
| Fukuoka FUK | 26 | 563 km | Asiana Airlines, Jeju Air, Korean Air |
| Hong Kong HKG | 21 | 2,069 km | Asiana Airlines, Cathay Pacific, HK Express |
| Qingdao (Jiaozhou) TAO | 19 | 579 km | China Eastern, Jeju Air, Korean Air |
| Shanghai PVG | 19 | 822 km | Asiana Airlines, China Eastern, China Southern |
| Bangkok BKK | 15 | 3,669 km | Asiana Airlines, Jeju Air, Korean Air |
| Taipei TPE | 14 | 1,464 km | Asiana Airlines, China Airlines, EVA Air |
| Hanoi HAN | 12 | 2,684 km | Asiana Airlines, Jeju Air, Korean Air |
| Manila MNL | 12 | 2,609 km | Asiana Airlines, Cebu Pacific, Jeju Air |
| Singapore SIN | 12 | 4,627 km | Asiana Airlines, Jeju Air, Korean Air |
| Ho Chi Minh City SGN | 11 | 3,563 km | Asiana Airlines, Korean Air, VietJet Air |
| Sapporo CTS | 11 | 1,421 km | Asiana Airlines, Jeju Air, Korean Air |
| Beijing PEK | 10 | 902 km | Air China, Asiana Airlines, Korean Air |
| Da Nang DAD | 10 | 2,981 km | Jeju Air, Korean Air, VietJet Air |
| Tokoname NGO | 10 | 973 km | Asiana Airlines, Jeju Air, Korean Air |
| Nha Trang/nha Trang aiurportCam Ranh CXR | 9.4 | 3,311 km | Jeju Air, Korean Air, VietJet Air |
| Phu Quoc Island PQC | 9.1 | 3,777 km | Jeju Air, Korean Air, VietJet Air |
| Naha OKA | 7.9 | 1,259 km | Asiana Airlines, Jeju Air, Korean Air |
| Hagåtña GUM | 7.4 | 3,227 km | Korean Air |
| Guangzhou CAN | 6.9 | 2,005 km | Asiana Airlines, China Southern, Korean Air |
| Shenyang SHE | 6.9 | 529 km | China Southern, Korean Air |
| Los Angeles LAX | 6.1 | 9,625 km | Asiana Airlines, Korean Air |
| Yantai YNT | 6.1 | 483 km | China Eastern, China Southern |
| Yanji YNJ | 6 | 654 km | Air China, Asiana Airlines, China Eastern |
| Shenzhen SZX | 5.9 | 2,045 km | Asiana Airlines, China Southern, Korean Air |
| Jinan (Licheng) TNA | 5.9 | 821 km | — |
| Dalian (Ganjingzi) DLC | 5.7 | 460 km | Asiana Airlines, China Southern, Korean Air |
| Busan PUS | 5.7 | 338 km | Korean Air |
| Kobe UKB | 5.7 | 849 km | Asiana Airlines, Jeju Air, Korean Air |
| San Francisco SFO | 5.4 | 9,085 km | Asiana Airlines, Korean Air, United Airlines |
| Kuala Lumpur KUL | 5.3 | 4,613 km | AirAsia, AirAsia X, Korean Air |
| Chiang Mai CNX | 4.7 | 3,382 km | Jeju Air, Korean Air |
| Sydney SYD | 4.7 | 8,343 km | Asiana Airlines, Jetstar, Korean Air |
| Atlanta ATL | 4.6 | 11,487 km | Delta Air Lines, Korean Air |
| New York JFK | 4.6 | 11,089 km | Asiana Airlines, Korean Air |
| Taichung (Qingshui) RMQ | 4.6 | 1,569 km | Korean Air |
| Tianjin TSN | 4.4 | 815 km | Air China, Asiana Airlines, Korean Air |
| Jakarta CGK | 4.3 | 5,264 km | Asiana Airlines, Garuda Indonesia, Korean Air |
| Ulaanbaatar (Sergelen) UBN | 4.3 | 1,957 km | Asiana Airlines, Jeju Air, Korean Air |
| Nanjing NKG | 4.1 | 942 km | Asiana Airlines, China Eastern, Korean Air |
| Vancouver YVR | 4.1 | 8,200 km | Air Canada, Korean Air |
| Kagoshima KOJ | 4 | 741 km | Jeju Air, Korean Air |
| Seattle SEA | 4 | 8,373 km | Alaska Airlines, Delta Air Lines, Korean Air |
| Hangzhou HGH | 3.9 | 977 km | Air China, Asiana Airlines, China Eastern |
| Nossa Senhora do Carmo MFM | 3.6 | 2,103 km | Jeju Air, Korean Air |
| Cebu CEB | 3.4 | 3,030 km | Cebu Pacific, Jeju Air, Korean Air |
| Mabalacat CRK | 3.4 | 2,545 km | Asiana Airlines, Jeju Air |
| Bali DPS | 3.4 | 5,272 km | Jeju Air, Korean Air |
| London LHR | 3.4 | 8,861 km | Asiana Airlines, Korean Air, Virgin Atlantic |
| Paris CDG | 3.3 | 8,927 km | Air France, Asiana Airlines, Korean Air |
| Changchun CGQ | 3.1 | 729 km | Asiana Airlines, China Southern |
| Harbin HRB | 3.1 | 907 km | Asiana Airlines, China Southern, Jeju Air |
| Xi'an XIY | 3.1 | 1,625 km | Asiana Airlines, China Eastern, Korean Air |
| Kaohsiung (Xiaogang) KHH | 3 | 1,756 km | China Airlines, EVA Air |
| Honolulu HNL | 2.9 | 7,353 km | Korean Air |
| Phnom Penh (Boeng Khyang) KTI | 2.9 | 3,611 km | Asiana Airlines, Korean Air |
| Xiamen XMN | 2.9 | 1,640 km | Korean Air |
| Istanbul IST | 2.7 | 7,924 km | Asiana Airlines, Korean Air, Turkish Airlines |
| Weihai WEH | 2.7 | 375 km | China Eastern, Jeju Air |
| Newark EWR | 2.4 | 11,074 km | United Airlines |
| New Delhi DEL | 2.3 | 4,654 km | Air India, Korean Air |
| Dallas DFW | 2.3 | 10,987 km | American Airlines, Korean Air |
| Frankfurt FRA | 2.3 | 8,544 km | Asiana Airlines, Korean Air, Lufthansa |
| Makinohara / Shimada FSZ | 2.3 | 1,095 km | Jeju Air |
| Hiroshima HIJ | 2.3 | 673 km | Jeju Air |
| Phuket HKT | 2.3 | 4,320 km | Asiana Airlines, Korean Air |
| Kumamoto KMJ | 2.3 | 652 km | Korean Air |
| Matsuyama MYJ | 2.3 | 695 km | Jeju Air |
| Beijing PKX | 2.3 | 902 km | China Eastern, China Southern |
| Takamatsu TAK | 2.3 | 772 km | — |
| Chengdu (Jianyang) TFU | 2.3 | 2,175 km | Air China, Asiana Airlines |
| Vientiane VTE | 2.3 | 3,179 km | Jeju Air |
| Zhangjiajie (Yongding) DYG | 1.9 | 1,751 km | Korean Air |
| Rome FCO | 1.9 | 8,964 km | Asiana Airlines, Korean Air |
| Fuzhou (Changle) FOC | 1.9 | 1,433 km | Korean Air |
| Oita OIT | 1.9 | 652 km | Jeju Air, Korean Air |
| Wuxi WUX | 1.9 | 863 km | China Eastern |
| Toronto YYZ | 1.9 | 10,617 km | Air Canada, Korean Air |
| Amsterdam AMS | 1.7 | 8,552 km | KLM, Korean Air |
| Barcelona BCN | 1.7 | 9,594 km | Asiana Airlines |
| Kota Kinabalu BKI | 1.7 | 3,662 km | AirAsia, Jeju Air |
| Dubai DXB | 1.7 | 6,729 km | Emirates |
| Washington IAD | 1.7 | 11,173 km | Korean Air |
| Abu Dhabi AUH | 1.6 | 6,837 km | Etihad Airways |
| Tashkent TAS | 1.6 | 4,844 km | — |
| Changsha (Changsha) CSX | 1.4 | 1,607 km | Asiana Airlines, China Southern, Korean Air |
| Zhengzhou CGO | 1.3 | 1,179 km | China Southern, Korean Air |
| Doha DOH | 1.3 | 7,052 km | Qatar Airways |
| Kunming KMG | 1.3 | 2,612 km | China Eastern, Korean Air |
| Salt Lake City SLC | 1.3 | 9,479 km | Delta Air Lines |
| Wuhan (Huangpi) WUH | 1.3 | 1,348 km | China Southern, Korean Air |
| Auckland AKL | 1.1 | 9,656 km | Korean Air |
| Almaty ALA | 1.1 | 4,172 km | — |
| Boston BOS | 1.1 | 10,964 km | Korean Air |
| Chongqing CKG | 1.1 | 2,021 km | Air China |
| Detroit DTW | 1.1 | 10,654 km | Delta Air Lines |
| Helsinki HEL | 1.1 | 7,032 km | Finnair |
| Ishigaki ISG | 1.1 | 1,469 km | — |
| Niigata KIJ | 1.1 | 1,114 km | Korean Air |
| Kitakyushu KKJ | 1.1 | 578 km | — |
| Kalibo KLO | 1.1 | 2,896 km | — |
| Kanazawa KMQ | 1.1 | 893 km | Korean Air |
| Las Vegas LAS | 1.1 | 9,668 km | Korean Air |
| Manado MDC | 1.1 | 3,997 km | — |
| Mexico City MEX | 1.1 | 12,096 km | Aeroméxico |
| Minneapolis MSP | 1.1 | 10,031 km | Delta Air Lines |
| Milan MXP | 1.1 | 8,876 km | Asiana Airlines, Korean Air |
| Chicago ORD | 1.1 | 10,519 km | Korean Air |
| Prague PRG | 1.1 | 8,237 km | Asiana Airlines, Korean Air |
| Miyakojima SHI | 1.1 | 1,411 km | — |
| Daegu TAE | 1.1 | 263 km | Korean Air |
| Panglao TAG | 1.1 | 3,114 km | Jeju Air |
| Addis Ababa ADD | 1 | 9,196 km | Ethiopian Airlines |
| Brisbane BNE | 1 | 7,730 km | Jetstar, Korean Air |
| Guilin (Lingui) KWL | 1 | 2,064 km | Jeju Air |
| Toyama TOY | 1 | 957 km | Korean Air |
| Aomori AOJ | 0.9 | 1,279 km | Korean Air |
| Copenhagen CPH | 0.9 | 7,924 km | SAS |
| Munich MUC | 0.9 | 8,500 km | Lufthansa |
| Yangon RGN | 0.9 | 3,742 km | Korean Air |
| Natori SDJ | 0.9 | 1,272 km | Asiana Airlines |
| Warsaw WAW | 0.9 | 7,726 km | LOT Polish Airlines |
| Yonago YGJ | 0.9 | 645 km | — |
| Haiphong (Hai An) HPH | 0.7 | 2,653 km | VietJet Air |
| Saga HSG | 0.7 | 594 km | — |
| Lisbon LIS | 0.7 | 10,396 km | Korean Air |
| Madrid MAD | 0.7 | 9,964 km | Korean Air |
| I Fadang, Saipan SPN | 0.7 | 3,127 km | Jeju Air |
| Vienna VIE | 0.7 | 8,248 km | Korean Air |
| Yichang (Xiaoting) YIH | 0.7 | 1,577 km | — |
| Bandar Seri Begawan BWN | 0.6 | 3,801 km | — |
| Miyazaki KMI | 0.6 | 771 km | Asiana Airlines |
| Nagasaki NGS | 0.6 | 596 km | Korean Air |
| Astana NQZ | 0.6 | 4,513 km | — |
| Okayama OKJ | 0.6 | 730 km | Korean Air |
| Calgary YYC | 0.6 | 8,543 km | WestJet |
| Budapest BUD | 0.4 | 8,137 km | Korean Air |
| Haikou (Meilan) HAK | 0.4 | 2,489 km | Hainan Airlines |
| Hefei HFE | 0.4 | 1,058 km | Korean Air |
| Tokushima TKS | 0.4 | 823 km | — |
| Shiyan (Maojian) WDS | 0.4 | 1,513 km | China Southern |
| Wenzhou (Longwan) WNZ | 0.4 | 1,184 km | Air China |
| Ashgabat ASB | 0.3 | 5,845 km | — |
| Shymkent CIT | 0.3 | 4,798 km | — |
| Colombo CMB | 0.3 | 5,768 km | SriLankan Airlines |
| Kathmandu KTM | 0.3 | 3,966 km | Korean Air |
| Lijiang LJG | 0.3 | 2,733 km | — |
| Shijiazhuang SJW | 0.3 | 1,035 km | — |
| Huangshan TXN | 0.3 | 1,146 km | — |
| Yancheng (Tinghu) YNZ | 0.3 | 722 km | Asiana Airlines |
| Anchorage ANC | 0.1 | 6,097 km | — |
| Baotou BAV | 0.1 | 1,460 km | — |
| Jeju City CJU | 0.1 | 440 km | Jeju Air |
| Jiamusi JMU | 0.1 | 1,093 km | Jeju Air |
| Linyi (Hedong) LYI | 0.1 | 769 km | — |
| Namangan NMA | 0.1 | 4,666 km | — |
| Wrocław WRO | 0.1 | 8,023 km | LOT Polish Airlines |
Routes with fewer than 1 flight a day on average link to the destination airport rather than a route page.