The contributors of Flight-Report published 7 reviews on 3 airlines on the route Bangkok - Suvarnabhumi (BKK) → Tokyo - Narita (NRT). The airline with the best average rating is Thai Airways with 8.2/10. The average flight time is 6 hours and 10 minutes.
Airlines on this route are:
Frequent travelers recommend "Thai Airways Royal First Class Lounge" at BKK for services and entertainment/wifi.