Incheon International Airport is served by 84 airlines, flying from/to 148 destinationsLongest flight from Incheon International Airport is Seoul to 🇺🇸 Covington (CVG), which takes around 15 hours and 5 minutes. On an airline like Kalitta Air. More info on this flight route (ICN-CVG).Shortest flight from Incheon International Airport is Seoul to 🇨🇳 Weihai (WEH), which takes around 1 hour and 20 minutes. On an airline like Jeju Air. More info on this flight route (ICN-WEH).