Who has rated the airport Incheon Subway Line 1 connects to as the best airport worldwide since 2005?
Incheon Subway Line 1:  The line is also included as a part of the overall Seoul Metropolitan Subway network; Bupyeong Station has a free transfer with Seoul Subway Line 1, Gyeyang Station connects with the AREX Line which leads to Incheon International Airport and Seoul Station, Bupyeong-gu Office Station has a free transfer with Seoul Subway Line 7, and Woninjae Station has a free transfer with the Suin Line. Incheon International Airport: Incheon International Airport (IIA) (IATA: ICN, ICAO: RKSI) (sometimes referred to as Seoul–Incheon International Airport) is the largest airport in South Korea, the primary airport serving the Seoul Capital Area, and one of the largest and busiest airports in the world.
i don't know