It's a super long trip in Y but can't beat the price if the dates work...
Best coach-class airline for intercontinental flights: Japan Airlines
Japan Airlines' new-design Sky Wider economy seats provide the roomiest international economy class you can currently find. Contrary to what most other airlines are doing, JAL is sticking with eight-across seats in its 787s and nine-across in its 777s. That's one fewer seat in each row than the current standard among most other lines, and the remaining seats are almost two inches wider than competitors' seats.
The new cabins also offer an industry-leading 34-inch pitch, compared with the 30- to 32-inch pitch you find on most other intercontinental airlines. The onboard catering generally earns high marks, as well; economy travelers enjoy individual 10-inch screens, and the new 777s and 787s provide satellite-based Wi-Fi.