Seoul has its own airport (Gimpo) but it now uses the one in Incheon as a main hub.
Yes, they share the same airport.
Incheon and Seoul are in the same metropolitan area. It takes about an hour to get from downtown Seoul to Incheon airport though.
Incheon international airport Kimpo internal airport ^^
The Incheon Airport, which serves the Seoul-Incheon Metropolitan area, is an island airport.
Incheon
The Incheon Airport Railroad Express goes to both Gimpo and Incheon Airports.
Incheon International Airport - Seoul, South Korea (ICN / RKSI).
Incheon International Airport (IIA) (IATA: ICN, ICAO: RKSI) Sometimes referred to as Seoul-Incheon International Airport
It is 7540 air miles from Fairbanks to Seoul, KR Incheon Intl Airport.
The floor area of Incheon International Airport in Seoul is 496,000 m2 (5,340,000 sq ft).
The capital of South Korea is Seoul. However, Seoul is not a coastal city, so MacArthur made his landing in the city of Incheon. Incheon has since become part of the Seoul metropolitan area, but remains a distinct city.
No, Incheon is a city located outside of the capital city of Seoul in South Korea.