Clear immigration and collect luggage; follow signs to AREX, airport limousine or taxi for transfer to central Seoul. Expect 60–90 minutes to downtown depending on your choice and traffic.
Check into your Seoul hotel (Myeongdong/Hongdae/Gangnam recommended) and grab a late snack from nearby convenience stores or night food stalls, many open late in busy districts.
Start with local favourites such as bindaetteok (mung-bean pancake) and mayak kimbap; the market opens early and gives an authentic Seoul morning vibe.
Explore the main Joseon-era palace and watch the colourful Changing of the Guard; Gyeongbokgung typically open 09:00–17:00 (check for seasonal or Tuesday closures).
Visit this UNESCO-listed palace; the Secret Garden requires a guided-ticket slot — palace open around 09:00–18:00, Secret Garden tours need booking in advance.
Wander the colourful alleys, murals and small galleries of this hillside cultural village; most areas open all day, some attractions charge a small fee.
Take the Songdo cable car for coastal panoramas or walk the skywalk for sea views; check the cable car schedule which runs most of the day but may close in bad weather.
Leave hotel by around noon to reach Incheon Airport for your 16:10 flight to Brunei — allow 3–4 hours for international check-in, security and immigration.