A 4 to 6-night trip to Tokyo in September 2026 for 2 adults from Los Angeles costs $1,999–$2,270 in verified flight+stay combinations, based on 5 real date options Valora priced against live supplier data, verified as of Jun 29, 2026. The best-value option departs Sep 15 and returns Sep 21, on Philippine Airlines, staying at Nomad Hostel Classic, for $2,095 total — flight, stay and estimated transfers for those exact dates and 2 adults, never a per-night rate scaled up. The full Edit below compares every option and adds the weather, sea temperature, crowds and local knowledge for those dates, with a source link on every claim.