The contributors of Flight-Report published 8 reviews on 3 airlines on the route Tokyo - Narita (NRT) → Bangkok - Suvarnabhumi (BKK). The airline with the best average rating is Thai Airways with 8.2/10. The average flight time is 6 hours and 32 minutes.
Airlines on this route are:
Frequent travelers recommend "ANA Suite Lounge Satellite No. 5" at NRT for services and meals/catering.