Not being able to use my SWUs to upgrade on UA metal to China in May I have secured space in business from PDX thru NRT to Peking on ANA and back through YVR on AC - Apparently AC's first IS business or vice versa?
Any comments on these airlines i9nternational service and what louges can I use in YVR, NRT or PEK (I'm a 1K if that makes any difference).

On my itinerary it says that I'm flying UA 875. Is that a code share or United meal (SEA-NRT)?

Thanks