Make the start and end points VIE and I think that works.

Otherwise the idea of a Circle Pacific was raised. Given that we're trying to get SEA in the mix, this makes sense. If we can get AC on board with this then we could do YVR - SEA - SIN - BKK - PVG - NRT - YVR.

A potential issue here is that AC only has 2 classes of service (though the J pods are quite nice). And if AC is not interested then perhaps UA might be so we'd fly in / out of SFO probably.

Lastly, I know that private aircraft at YYZ use a private entrance with similarly upscale screening / customs etc. I'm not sure if this exists in YVR nor if they would let us use the private area if we're flying a 77L, but if they do this would avoid a bit of CATSA / TSA sillyness.