Keikyu + Toei Subway (via Daimon)
¥550- HND T3 → DAIMON · ¥550 through ticket to ROPPONGI · 25 min · last 23:09 · Keikyu Airport Line (through service to Toei Asakusa Line)
- DAIMON → ROPPONGI · same through ticket · 7 min · last 00:30 · Toei Oedo Line
Buy one through ticket to Roppongi (or tap an IC card) — the Toei fare does not reset when you change to the Oedo Line at Daimon.
Late-night: connection between lines is not guaranteed — check the last feasible departure.