The airline with the best average rating is Cathay Pacific with 8.4/10.
The average flight time is 4 hours and 59 minutes.More information
This flight was fine and comfortable.
There are fast track in Tokyo, it is useful for the business traveler to save the time of security check. However, I used 3 minutes for security check
The lounge of UA club, it looks Japanese rather than ANA lounge. However, the selection of food which is ANA better than UA. If you like to enjoy
an environment of quiet, you should choose UA Club. Anyway, both lounge are fine.
For the flight of ET673, the food it just okay. However, the dessert was attractive than ET672. The FA is nice and friendly to the passengers.
To sum up, it is worth for flight to Tokyo with Business Class. You can enjoy the lounge access and fast track in Tokyo. If I have extra budget,
I would choose ET again.