February fares dip to USD 210, and that thin-crowd window is worth building a trip around before Golden Week pushes prices 50-70% higher. Haneda sits just 14 km from Shinjuku, Terminal 3 signed in four languages, which makes the arrival almost as good as the destination. Seoul to Tokyo takes 2h 20m for USD 210, while Sydney runs 9h 45m and USD 650, so the maths changes a lot depending on where you're flying from. Broad BNPL coverage from Atome to Klarna means the instalments are there if the timing isn't.
