Frontier Airlines Incheon International Airport does not operate any direct flights from Incheon International Airport (ICN). However, passengers can access Frontier's network by flying with partner airlines. With top-notch amenities including duty-free shopping, a range of dining options, luxury areas to relax and quick check-in, Incheon Airport guarantees a seamless and pleasurable... https://www.airportsbuddy.com/frontier-airlines/frontier-airlines-icn-terminal-incheon-international-airport/