Since you arrive at Incheon International Airport (ICN) at 10 PM, most buses and public transportation options might not be available or convenient. However, here are a few alternatives to get to Mangwon, Mapo-gu in Seoul:

  1. All-Stop Bus: You can take the All-Stop Bus No. 6003 from Incheon International Airport’s Terminal 1 ( Door 7) to Gangnam Station. Get off at the Mangwon Interchange stop. The journey takes around 45 minutes, and buses run every 10-20 minutes.
  2. Incheon City Tour: This bus service runs on a fixed loop, but you can get off at designated stops in Mapo-gu area. Check the Incheon City Tour website for routes and schedules. The trip might take about an hour.
  3. Taxi or Ride-hailing Services: Taking a taxi or using ride-hailing services like Kakao T (Korean version of Uber) or Google Maps would be more convenient, especially at night. Just enter your destination in the app or tell the driver to bring you to Mangwon Station or nearest street.

Please note that public transportation options might have limited hours and frequencies during nighttime. It’s a good idea to research schedules and plan ahead before arriving at Incheon Airport.